author | stefank |
Wed, 05 Jul 2017 11:33:17 +0200 | |
changeset 46625 | edefffab74e2 |
parent 46622 | 910fc72c03e8 |
child 46652 | ab8716d193bb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
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#include "precompiled.hpp" |
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#include "classfile/metadataOnStackMark.hpp" |
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#include "classfile/stringTable.hpp" |
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#include "classfile/symbolTable.hpp" |
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#include "code/codeCache.hpp" |
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#include "code/icBuffer.hpp" |
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#include "gc/g1/bufferingOopClosure.hpp" |
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#include "gc/g1/concurrentG1Refine.hpp" |
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#include "gc/g1/concurrentG1RefineThread.hpp" |
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#include "gc/g1/concurrentMarkThread.inline.hpp" |
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#include "gc/g1/g1Allocator.inline.hpp" |
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#include "gc/g1/g1CollectedHeap.inline.hpp" |
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#include "gc/g1/g1CollectionSet.hpp" |
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#include "gc/g1/g1CollectorPolicy.hpp" |
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#include "gc/g1/g1CollectorState.hpp" |
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#include "gc/g1/g1EvacStats.inline.hpp" |
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#include "gc/g1/g1GCPhaseTimes.hpp" |
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#include "gc/g1/g1HeapSizingPolicy.hpp" |
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#include "gc/g1/g1HeapTransition.hpp" |
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#include "gc/g1/g1HeapVerifier.hpp" |
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#include "gc/g1/g1HotCardCache.hpp" |
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#include "gc/g1/g1MarkSweep.hpp" |
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#include "gc/g1/g1OopClosures.inline.hpp" |
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#include "gc/g1/g1ParScanThreadState.inline.hpp" |
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#include "gc/g1/g1Policy.hpp" |
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#include "gc/g1/g1RegionToSpaceMapper.hpp" |
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#include "gc/g1/g1RemSet.inline.hpp" |
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#include "gc/g1/g1RootClosures.hpp" |
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#include "gc/g1/g1RootProcessor.hpp" |
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#include "gc/g1/g1StringDedup.hpp" |
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#include "gc/g1/g1YCTypes.hpp" |
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#include "gc/g1/heapRegion.inline.hpp" |
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#include "gc/g1/heapRegionRemSet.hpp" |
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#include "gc/g1/heapRegionSet.inline.hpp" |
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#include "gc/g1/suspendibleThreadSet.hpp" |
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#include "gc/g1/vm_operations_g1.hpp" |
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#include "gc/shared/gcHeapSummary.hpp" |
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#include "gc/shared/gcId.hpp" |
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#include "gc/shared/gcLocker.inline.hpp" |
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#include "gc/shared/gcTimer.hpp" |
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#include "gc/shared/gcTrace.hpp" |
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#include "gc/shared/gcTraceTime.inline.hpp" |
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#include "gc/shared/generationSpec.hpp" |
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#include "gc/shared/isGCActiveMark.hpp" |
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#include "gc/shared/preservedMarks.inline.hpp" |
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#include "gc/shared/referenceProcessor.inline.hpp" |
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#include "gc/shared/taskqueue.inline.hpp" |
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#include "logging/log.hpp" |
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#include "memory/allocation.hpp" |
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#include "memory/iterator.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "prims/resolvedMethodTable.hpp" |
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#include "runtime/atomic.hpp" |
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#include "runtime/init.hpp" |
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#include "runtime/orderAccess.inline.hpp" |
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#include "runtime/vmThread.hpp" |
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#include "utilities/align.hpp" |
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#include "utilities/globalDefinitions.hpp" |
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#include "utilities/stack.inline.hpp" |
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size_t G1CollectedHeap::_humongous_object_threshold_in_words = 0; |
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// INVARIANTS/NOTES |
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// |
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// All allocation activity covered by the G1CollectedHeap interface is |
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// serialized by acquiring the HeapLock. This happens in mem_allocate |
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// and allocate_new_tlab, which are the "entry" points to the |
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// allocation code from the rest of the JVM. (Note that this does not |
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// apply to TLAB allocation, which is not part of this interface: it |
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// is done by clients of this interface.) |
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// Local to this file. |
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||
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class RefineCardTableEntryClosure: public CardTableEntryClosure { |
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bool _concurrent; |
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public: |
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RefineCardTableEntryClosure() : _concurrent(true) { } |
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bool do_card_ptr(jbyte* card_ptr, uint worker_i) { |
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G1CollectedHeap::heap()->g1_rem_set()->refine_card_concurrently(card_ptr, worker_i); |
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if (_concurrent && SuspendibleThreadSet::should_yield()) { |
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// Caller will actually yield. |
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return false; |
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} |
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// Otherwise, we finished successfully; return true. |
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return true; |
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} |
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void set_concurrent(bool b) { _concurrent = b; } |
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}; |
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class RedirtyLoggedCardTableEntryClosure : public CardTableEntryClosure { |
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private: |
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size_t _num_dirtied; |
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G1CollectedHeap* _g1h; |
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G1SATBCardTableLoggingModRefBS* _g1_bs; |
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HeapRegion* region_for_card(jbyte* card_ptr) const { |
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return _g1h->heap_region_containing(_g1_bs->addr_for(card_ptr)); |
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} |
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bool will_become_free(HeapRegion* hr) const { |
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// A region will be freed by free_collection_set if the region is in the |
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// collection set and has not had an evacuation failure. |
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return _g1h->is_in_cset(hr) && !hr->evacuation_failed(); |
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} |
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public: |
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RedirtyLoggedCardTableEntryClosure(G1CollectedHeap* g1h) : CardTableEntryClosure(), |
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_num_dirtied(0), _g1h(g1h), _g1_bs(g1h->g1_barrier_set()) { } |
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bool do_card_ptr(jbyte* card_ptr, uint worker_i) { |
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HeapRegion* hr = region_for_card(card_ptr); |
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|
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// Should only dirty cards in regions that won't be freed. |
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if (!will_become_free(hr)) { |
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*card_ptr = CardTableModRefBS::dirty_card_val(); |
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_num_dirtied++; |
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} |
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return true; |
149 |
} |
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size_t num_dirtied() const { return _num_dirtied; } |
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}; |
153 |
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void G1RegionMappingChangedListener::reset_from_card_cache(uint start_idx, size_t num_regions) { |
28030 | 156 |
HeapRegionRemSet::invalidate_from_card_cache(start_idx, num_regions); |
26160 | 157 |
} |
158 |
||
27149 | 159 |
void G1RegionMappingChangedListener::on_commit(uint start_idx, size_t num_regions, bool zero_filled) { |
160 |
// The from card cache is not the memory that is actually committed. So we cannot |
|
161 |
// take advantage of the zero_filled parameter. |
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reset_from_card_cache(start_idx, num_regions); |
163 |
} |
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// Returns true if the reference points to an object that |
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// can move in an incremental collection. |
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bool G1CollectedHeap::is_scavengable(const void* p) { |
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HeapRegion* hr = heap_region_containing(p); |
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return !hr->is_pinned(); |
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} |
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1374 | 172 |
// Private methods. |
173 |
||
7923 | 174 |
HeapRegion* |
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175 |
G1CollectedHeap::new_region_try_secondary_free_list(bool is_old) { |
7923 | 176 |
MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag); |
177 |
while (!_secondary_free_list.is_empty() || free_regions_coming()) { |
|
178 |
if (!_secondary_free_list.is_empty()) { |
|
35061 | 179 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [region alloc] : " |
180 |
"secondary_free_list has %u entries", |
|
181 |
_secondary_free_list.length()); |
|
7923 | 182 |
// It looks as if there are free regions available on the |
183 |
// secondary_free_list. Let's move them to the free_list and try |
|
184 |
// again to allocate from it. |
|
185 |
append_secondary_free_list(); |
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186 |
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187 |
assert(_hrm.num_free_regions() > 0, "if the secondary_free_list was not " |
7923 | 188 |
"empty we should have moved at least one entry to the free_list"); |
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189 |
HeapRegion* res = _hrm.allocate_free_region(is_old); |
35061 | 190 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [region alloc] : " |
191 |
"allocated " HR_FORMAT " from secondary_free_list", |
|
192 |
HR_FORMAT_PARAMS(res)); |
|
7923 | 193 |
return res; |
194 |
} |
|
195 |
||
18025 | 196 |
// Wait here until we get notified either when (a) there are no |
7923 | 197 |
// more free regions coming or (b) some regions have been moved on |
198 |
// the secondary_free_list. |
|
199 |
SecondaryFreeList_lock->wait(Mutex::_no_safepoint_check_flag); |
|
200 |
} |
|
201 |
||
35061 | 202 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [region alloc] : " |
203 |
"could not allocate from secondary_free_list"); |
|
7923 | 204 |
return NULL; |
205 |
} |
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206 |
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HeapRegion* G1CollectedHeap::new_region(size_t word_size, bool is_old, bool do_expand) { |
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208 |
assert(!is_humongous(word_size) || word_size <= HeapRegion::GrainWords, |
7923 | 209 |
"the only time we use this to allocate a humongous region is " |
210 |
"when we are allocating a single humongous region"); |
|
211 |
||
212 |
HeapRegion* res; |
|
213 |
if (G1StressConcRegionFreeing) { |
|
214 |
if (!_secondary_free_list.is_empty()) { |
|
35061 | 215 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [region alloc] : " |
216 |
"forced to look at the secondary_free_list"); |
|
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|
217 |
res = new_region_try_secondary_free_list(is_old); |
7923 | 218 |
if (res != NULL) { |
219 |
return res; |
|
220 |
} |
|
221 |
} |
|
222 |
} |
|
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|
223 |
|
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|
224 |
res = _hrm.allocate_free_region(is_old); |
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|
225 |
|
7923 | 226 |
if (res == NULL) { |
35061 | 227 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [region alloc] : " |
228 |
"res == NULL, trying the secondary_free_list"); |
|
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|
229 |
res = new_region_try_secondary_free_list(is_old); |
7923 | 230 |
} |
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|
231 |
if (res == NULL && do_expand && _expand_heap_after_alloc_failure) { |
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|
232 |
// Currently, only attempts to allocate GC alloc regions set |
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|
233 |
// do_expand to true. So, we should only reach here during a |
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|
234 |
// safepoint. If this assumption changes we might have to |
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|
235 |
// reconsider the use of _expand_heap_after_alloc_failure. |
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|
236 |
assert(SafepointSynchronize::is_at_safepoint(), "invariant"); |
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|
237 |
|
35061 | 238 |
log_debug(gc, ergo, heap)("Attempt heap expansion (region allocation request failed). Allocation request: " SIZE_FORMAT "B", |
239 |
word_size * HeapWordSize); |
|
240 |
||
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|
241 |
if (expand(word_size * HeapWordSize)) { |
11449
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|
242 |
// Given that expand() succeeded in expanding the heap, and we |
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|
243 |
// always expand the heap by an amount aligned to the heap |
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|
244 |
// region size, the free list should in theory not be empty. |
26157
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|
245 |
// In either case allocate_free_region() will check for NULL. |
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|
246 |
res = _hrm.allocate_free_region(is_old); |
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|
247 |
} else { |
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|
248 |
_expand_heap_after_alloc_failure = false; |
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|
249 |
} |
1374 | 250 |
} |
251 |
return res; |
|
252 |
} |
|
253 |
||
8680 | 254 |
HeapWord* |
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|
255 |
G1CollectedHeap::humongous_obj_allocate_initialize_regions(uint first, |
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|
256 |
uint num_regions, |
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|
257 |
size_t word_size, |
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|
258 |
AllocationContext_t context) { |
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|
259 |
assert(first != G1_NO_HRM_INDEX, "pre-condition"); |
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|
260 |
assert(is_humongous(word_size), "word_size should be humongous"); |
8680 | 261 |
assert(num_regions * HeapRegion::GrainWords >= word_size, "pre-condition"); |
262 |
||
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|
263 |
// Index of last region in the series. |
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|
264 |
uint last = first + num_regions - 1; |
8680 | 265 |
|
266 |
// We need to initialize the region(s) we just discovered. This is |
|
267 |
// a bit tricky given that it can happen concurrently with |
|
268 |
// refinement threads refining cards on these regions and |
|
269 |
// potentially wanting to refine the BOT as they are scanning |
|
270 |
// those cards (this can happen shortly after a cleanup; see CR |
|
271 |
// 6991377). So we have to set up the region(s) carefully and in |
|
272 |
// a specific order. |
|
273 |
||
274 |
// The word size sum of all the regions we will allocate. |
|
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|
275 |
size_t word_size_sum = (size_t) num_regions * HeapRegion::GrainWords; |
8680 | 276 |
assert(word_size <= word_size_sum, "sanity"); |
277 |
||
278 |
// This will be the "starts humongous" region. |
|
9989 | 279 |
HeapRegion* first_hr = region_at(first); |
8680 | 280 |
// The header of the new object will be placed at the bottom of |
281 |
// the first region. |
|
282 |
HeapWord* new_obj = first_hr->bottom(); |
|
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changeset
|
283 |
// This will be the new top of the new object. |
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|
284 |
HeapWord* obj_top = new_obj + word_size; |
8680 | 285 |
|
286 |
// First, we need to zero the header of the space that we will be |
|
287 |
// allocating. When we update top further down, some refinement |
|
288 |
// threads might try to scan the region. By zeroing the header we |
|
289 |
// ensure that any thread that will try to scan the region will |
|
290 |
// come across the zero klass word and bail out. |
|
291 |
// |
|
292 |
// NOTE: It would not have been correct to have used |
|
293 |
// CollectedHeap::fill_with_object() and make the space look like |
|
294 |
// an int array. The thread that is doing the allocation will |
|
295 |
// later update the object header to a potentially different array |
|
296 |
// type and, for a very short period of time, the klass and length |
|
297 |
// fields will be inconsistent. This could cause a refinement |
|
298 |
// thread to calculate the object size incorrectly. |
|
299 |
Copy::fill_to_words(new_obj, oopDesc::header_size(), 0); |
|
300 |
||
42589
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8166811: Missing memory fences between memory allocation and refinement
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diff
changeset
|
301 |
// Next, pad out the unused tail of the last region with filler |
037b433e8069
8166811: Missing memory fences between memory allocation and refinement
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diff
changeset
|
302 |
// objects, for improved usage accounting. |
34291
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|
303 |
// How many words we use for filler objects. |
8ad97a2bc8e7
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changeset
|
304 |
size_t word_fill_size = word_size_sum - word_size; |
8ad97a2bc8e7
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changeset
|
305 |
|
8ad97a2bc8e7
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diff
changeset
|
306 |
// How many words memory we "waste" which cannot hold a filler object. |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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diff
changeset
|
307 |
size_t words_not_fillable = 0; |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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diff
changeset
|
308 |
|
8ad97a2bc8e7
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diff
changeset
|
309 |
if (word_fill_size >= min_fill_size()) { |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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diff
changeset
|
310 |
fill_with_objects(obj_top, word_fill_size); |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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diff
changeset
|
311 |
} else if (word_fill_size > 0) { |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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diff
changeset
|
312 |
// We have space to fill, but we cannot fit an object there. |
8ad97a2bc8e7
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diff
changeset
|
313 |
words_not_fillable = word_fill_size; |
8ad97a2bc8e7
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diff
changeset
|
314 |
word_fill_size = 0; |
34249
a015a11067a2
8138681: Runtime.getFreeMemory() reports wrong value after humongous allocation.
david
parents:
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diff
changeset
|
315 |
} |
a015a11067a2
8138681: Runtime.getFreeMemory() reports wrong value after humongous allocation.
david
parents:
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diff
changeset
|
316 |
|
8680 | 317 |
// We will set up the first region as "starts humongous". This |
318 |
// will also update the BOT covering all the regions to reflect |
|
319 |
// that there is a single object that starts at the bottom of the |
|
320 |
// first region. |
|
34291
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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34249
diff
changeset
|
321 |
first_hr->set_starts_humongous(obj_top, word_fill_size); |
26837
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diff
changeset
|
322 |
first_hr->set_allocation_context(context); |
8680 | 323 |
// Then, if there are any, we will set up the "continues |
324 |
// humongous" regions. |
|
325 |
HeapRegion* hr = NULL; |
|
34291
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
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diff
changeset
|
326 |
for (uint i = first + 1; i <= last; ++i) { |
9989 | 327 |
hr = region_at(i); |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
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diff
changeset
|
328 |
hr->set_continues_humongous(first_hr); |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
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diff
changeset
|
329 |
hr->set_allocation_context(context); |
8680 | 330 |
} |
331 |
||
332 |
// Up to this point no concurrent thread would have been able to |
|
333 |
// do any scanning on any region in this series. All the top |
|
334 |
// fields still point to bottom, so the intersection between |
|
335 |
// [bottom,top] and [card_start,card_end] will be empty. Before we |
|
336 |
// update the top fields, we'll do a storestore to make sure that |
|
337 |
// no thread sees the update to top before the zeroing of the |
|
338 |
// object header and the BOT initialization. |
|
339 |
OrderAccess::storestore(); |
|
340 |
||
341 |
// Now, we will update the top fields of the "continues humongous" |
|
34291
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
342 |
// regions except the last one. |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
343 |
for (uint i = first; i < last; ++i) { |
9989 | 344 |
hr = region_at(i); |
34249
a015a11067a2
8138681: Runtime.getFreeMemory() reports wrong value after humongous allocation.
david
parents:
34241
diff
changeset
|
345 |
hr->set_top(hr->end()); |
34291
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
346 |
} |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
34249
diff
changeset
|
347 |
|
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
34249
diff
changeset
|
348 |
hr = region_at(last); |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
34249
diff
changeset
|
349 |
// If we cannot fit a filler object, we must set top to the end |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
34249
diff
changeset
|
350 |
// of the humongous object, otherwise we cannot iterate the heap |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
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diff
changeset
|
351 |
// and the BOT will not be complete. |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
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diff
changeset
|
352 |
hr->set_top(hr->end() - words_not_fillable); |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
34249
diff
changeset
|
353 |
|
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
34249
diff
changeset
|
354 |
assert(hr->bottom() < obj_top && obj_top <= hr->end(), |
34249
a015a11067a2
8138681: Runtime.getFreeMemory() reports wrong value after humongous allocation.
david
parents:
34241
diff
changeset
|
355 |
"obj_top should be in last region"); |
a015a11067a2
8138681: Runtime.getFreeMemory() reports wrong value after humongous allocation.
david
parents:
34241
diff
changeset
|
356 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
357 |
_verifier->check_bitmaps("Humongous Region Allocation", first_hr); |
8680 | 358 |
|
34291
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8143587: G1 crashes with humongous object of size that almost fills a heap region
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parents:
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diff
changeset
|
359 |
assert(words_not_fillable == 0 || |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
360 |
first_hr->bottom() + word_size_sum - words_not_fillable == hr->top(), |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
361 |
"Miscalculation in humongous allocation"); |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
362 |
|
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
363 |
increase_used((word_size_sum - words_not_fillable) * HeapWordSize); |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
364 |
|
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
365 |
for (uint i = first; i <= last; ++i) { |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
366 |
hr = region_at(i); |
8ad97a2bc8e7
8143587: G1 crashes with humongous object of size that almost fills a heap region
david
parents:
34249
diff
changeset
|
367 |
_humongous_set.add(hr); |
35079
edab77f91231
8145301: Improve and unify the printout format for the g1HRPrinter.
david
parents:
35065
diff
changeset
|
368 |
_hr_printer.alloc(hr); |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
369 |
} |
8680 | 370 |
|
371 |
return new_obj; |
|
372 |
} |
|
373 |
||
34298
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
374 |
size_t G1CollectedHeap::humongous_obj_size_in_regions(size_t word_size) { |
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
375 |
assert(is_humongous(word_size), "Object of size " SIZE_FORMAT " must be humongous here", word_size); |
46622
910fc72c03e8
8178501: Replace usages of align macros with calls to the align inline functions
stefank
parents:
46619
diff
changeset
|
376 |
return align_up(word_size, HeapRegion::GrainWords) / HeapRegion::GrainWords; |
34298
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
377 |
} |
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
378 |
|
1374 | 379 |
// If could fit into free regions w/o expansion, try. |
380 |
// Otherwise, if can expand, do so. |
|
381 |
// Otherwise, if using ex regions might help, try with ex given back. |
|
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
382 |
HeapWord* G1CollectedHeap::humongous_obj_allocate(size_t word_size, AllocationContext_t context) { |
7923 | 383 |
assert_heap_locked_or_at_safepoint(true /* should_be_vm_thread */); |
384 |
||
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
385 |
_verifier->verify_region_sets_optional(); |
1374 | 386 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
387 |
uint first = G1_NO_HRM_INDEX; |
34298
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
388 |
uint obj_regions = (uint) humongous_obj_size_in_regions(word_size); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
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changeset
|
389 |
|
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
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diff
changeset
|
390 |
if (obj_regions == 1) { |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
391 |
// Only one region to allocate, try to use a fast path by directly allocating |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
392 |
// from the free lists. Do not try to expand here, we will potentially do that |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
393 |
// later. |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
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diff
changeset
|
394 |
HeapRegion* hr = new_region(word_size, true /* is_old */, false /* do_expand */); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
395 |
if (hr != NULL) { |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
396 |
first = hr->hrm_index(); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
397 |
} |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
398 |
} else { |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
399 |
// We can't allocate humongous regions spanning more than one region while |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
400 |
// cleanupComplete() is running, since some of the regions we find to be |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
401 |
// empty might not yet be added to the free list. It is not straightforward |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
402 |
// to know in which list they are on so that we can remove them. We only |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
403 |
// need to do this if we need to allocate more than one region to satisfy the |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
404 |
// current humongous allocation request. If we are only allocating one region |
26160 | 405 |
// we use the one-region region allocation code (see above), that already |
406 |
// potentially waits for regions from the secondary free list. |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
407 |
wait_while_free_regions_coming(); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
408 |
append_secondary_free_list_if_not_empty_with_lock(); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
409 |
|
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
410 |
// Policy: Try only empty regions (i.e. already committed first). Maybe we |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
411 |
// are lucky enough to find some. |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
412 |
first = _hrm.find_contiguous_only_empty(obj_regions); |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
413 |
if (first != G1_NO_HRM_INDEX) { |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
414 |
_hrm.allocate_free_regions_starting_at(first, obj_regions); |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
415 |
} |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
416 |
} |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
417 |
|
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
418 |
if (first == G1_NO_HRM_INDEX) { |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
419 |
// Policy: We could not find enough regions for the humongous object in the |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
420 |
// free list. Look through the heap to find a mix of free and uncommitted regions. |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
421 |
// If so, try expansion. |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
422 |
first = _hrm.find_contiguous_empty_or_unavailable(obj_regions); |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
423 |
if (first != G1_NO_HRM_INDEX) { |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
424 |
// We found something. Make sure these regions are committed, i.e. expand |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
425 |
// the heap. Alternatively we could do a defragmentation GC. |
35061 | 426 |
log_debug(gc, ergo, heap)("Attempt heap expansion (humongous allocation request failed). Allocation request: " SIZE_FORMAT "B", |
427 |
word_size * HeapWordSize); |
|
428 |
||
42595
b1ae41a4eae9
8169703: G1 crashes with guarantee(pretouch_gang != NULL) failed: No pretouch gang specified
tschatzl
parents:
42589
diff
changeset
|
429 |
_hrm.expand_at(first, obj_regions, workers()); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
430 |
g1_policy()->record_new_heap_size(num_regions()); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
431 |
|
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
432 |
#ifdef ASSERT |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
433 |
for (uint i = first; i < first + obj_regions; ++i) { |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
434 |
HeapRegion* hr = region_at(i); |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
435 |
assert(hr->is_free(), "sanity"); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
436 |
assert(hr->is_empty(), "sanity"); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
437 |
assert(is_on_master_free_list(hr), "sanity"); |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
438 |
} |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
439 |
#endif |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
440 |
_hrm.allocate_free_regions_starting_at(first, obj_regions); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
441 |
} else { |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
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parents:
25942
diff
changeset
|
442 |
// Policy: Potentially trigger a defragmentation GC. |
7923 | 443 |
} |
444 |
} |
|
445 |
||
8680 | 446 |
HeapWord* result = NULL; |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
447 |
if (first != G1_NO_HRM_INDEX) { |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
448 |
result = humongous_obj_allocate_initialize_regions(first, obj_regions, |
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
449 |
word_size, context); |
8680 | 450 |
assert(result != NULL, "it should always return a valid result"); |
10671
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
451 |
|
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
452 |
// A successful humongous object allocation changes the used space |
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
453 |
// information of the old generation so we need to recalculate the |
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
454 |
// sizes and update the jstat counters here. |
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
455 |
g1mm()->update_sizes(); |
7923 | 456 |
} |
457 |
||
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
458 |
_verifier->verify_region_sets_optional(); |
8680 | 459 |
|
460 |
return result; |
|
1374 | 461 |
} |
462 |
||
7398 | 463 |
HeapWord* G1CollectedHeap::allocate_new_tlab(size_t word_size) { |
464 |
assert_heap_not_locked_and_not_at_safepoint(); |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
465 |
assert(!is_humongous(word_size), "we do not allow humongous TLABs"); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
466 |
|
29078 | 467 |
uint dummy_gc_count_before; |
468 |
uint dummy_gclocker_retry_count = 0; |
|
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
469 |
return attempt_allocation(word_size, &dummy_gc_count_before, &dummy_gclocker_retry_count); |
1374 | 470 |
} |
471 |
||
472 |
HeapWord* |
|
473 |
G1CollectedHeap::mem_allocate(size_t word_size, |
|
7398 | 474 |
bool* gc_overhead_limit_was_exceeded) { |
475 |
assert_heap_not_locked_and_not_at_safepoint(); |
|
1374 | 476 |
|
18025 | 477 |
// Loop until the allocation is satisfied, or unsatisfied after GC. |
29078 | 478 |
for (uint try_count = 1, gclocker_retry_count = 0; /* we'll return */; try_count += 1) { |
479 |
uint gc_count_before; |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
480 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
481 |
HeapWord* result = NULL; |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
482 |
if (!is_humongous(word_size)) { |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
483 |
result = attempt_allocation(word_size, &gc_count_before, &gclocker_retry_count); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
484 |
} else { |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
485 |
result = attempt_allocation_humongous(word_size, &gc_count_before, &gclocker_retry_count); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
486 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
487 |
if (result != NULL) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
488 |
return result; |
1374 | 489 |
} |
490 |
||
491 |
// Create the garbage collection operation... |
|
7398 | 492 |
VM_G1CollectForAllocation op(gc_count_before, word_size); |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
493 |
op.set_allocation_context(AllocationContext::current()); |
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
494 |
|
1374 | 495 |
// ...and get the VM thread to execute it. |
496 |
VMThread::execute(&op); |
|
7398 | 497 |
|
498 |
if (op.prologue_succeeded() && op.pause_succeeded()) { |
|
499 |
// If the operation was successful we'll return the result even |
|
500 |
// if it is NULL. If the allocation attempt failed immediately |
|
501 |
// after a Full GC, it's unlikely we'll be able to allocate now. |
|
502 |
HeapWord* result = op.result(); |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
503 |
if (result != NULL && !is_humongous(word_size)) { |
7398 | 504 |
// Allocations that take place on VM operations do not do any |
505 |
// card dirtying and we have to do it here. We only have to do |
|
506 |
// this for non-humongous allocations, though. |
|
507 |
dirty_young_block(result, word_size); |
|
508 |
} |
|
1374 | 509 |
return result; |
7398 | 510 |
} else { |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
511 |
if (gclocker_retry_count > GCLockerRetryAllocationCount) { |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
512 |
return NULL; |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
513 |
} |
7398 | 514 |
assert(op.result() == NULL, |
515 |
"the result should be NULL if the VM op did not succeed"); |
|
1374 | 516 |
} |
517 |
||
518 |
// Give a warning if we seem to be looping forever. |
|
519 |
if ((QueuedAllocationWarningCount > 0) && |
|
520 |
(try_count % QueuedAllocationWarningCount == 0)) { |
|
37073
c39d0903390b
8151605: Change warning() to log_warning(gc) in the GC code
brutisso
parents:
37039
diff
changeset
|
521 |
log_warning(gc)("G1CollectedHeap::mem_allocate retries %d times", try_count); |
1374 | 522 |
} |
523 |
} |
|
7398 | 524 |
|
525 |
ShouldNotReachHere(); |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
526 |
return NULL; |
1374 | 527 |
} |
528 |
||
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
529 |
HeapWord* G1CollectedHeap::attempt_allocation_slow(size_t word_size, |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
530 |
AllocationContext_t context, |
29078 | 531 |
uint* gc_count_before_ret, |
532 |
uint* gclocker_retry_count_ret) { |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
533 |
// Make sure you read the note in attempt_allocation_humongous(). |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
534 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
535 |
assert_heap_not_locked_and_not_at_safepoint(); |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
536 |
assert(!is_humongous(word_size), "attempt_allocation_slow() should not " |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
537 |
"be called for humongous allocation requests"); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
538 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
539 |
// We should only get here after the first-level allocation attempt |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
540 |
// (attempt_allocation()) failed to allocate. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
541 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
542 |
// We will loop until a) we manage to successfully perform the |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
543 |
// allocation or b) we successfully schedule a collection which |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
544 |
// fails to perform the allocation. b) is the only case when we'll |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
545 |
// return NULL. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
546 |
HeapWord* result = NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
547 |
for (int try_count = 1; /* we'll return */; try_count += 1) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
548 |
bool should_try_gc; |
29078 | 549 |
uint gc_count_before; |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
550 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
551 |
{ |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
552 |
MutexLockerEx x(Heap_lock); |
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
553 |
result = _allocator->attempt_allocation_locked(word_size, context); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
554 |
if (result != NULL) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
555 |
return result; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
556 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
557 |
|
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
558 |
if (GCLocker::is_active_and_needs_gc()) { |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
559 |
if (g1_policy()->can_expand_young_list()) { |
10523
cdb54c167ab0
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
10495
diff
changeset
|
560 |
// No need for an ergo verbose message here, |
cdb54c167ab0
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
10495
diff
changeset
|
561 |
// can_expand_young_list() does this when it returns true. |
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
562 |
result = _allocator->attempt_allocation_force(word_size, context); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
563 |
if (result != NULL) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
564 |
return result; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
565 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
566 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
567 |
should_try_gc = false; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
568 |
} else { |
12778
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
569 |
// The GCLocker may not be active but the GCLocker initiated |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
570 |
// GC may not yet have been performed (GCLocker::needs_gc() |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
571 |
// returns true). In this case we do not try this GC and |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
572 |
// wait until the GCLocker initiated GC is performed, and |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
573 |
// then retry the allocation. |
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
574 |
if (GCLocker::needs_gc()) { |
12778
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
575 |
should_try_gc = false; |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
576 |
} else { |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
577 |
// Read the GC count while still holding the Heap_lock. |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
578 |
gc_count_before = total_collections(); |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
579 |
should_try_gc = true; |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
580 |
} |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
581 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
582 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
583 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
584 |
if (should_try_gc) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
585 |
bool succeeded; |
19549
60e5c7cafdca
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
19341
diff
changeset
|
586 |
result = do_collection_pause(word_size, gc_count_before, &succeeded, |
29078 | 587 |
GCCause::_g1_inc_collection_pause); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
588 |
if (result != NULL) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
589 |
assert(succeeded, "only way to get back a non-NULL result"); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
590 |
return result; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
591 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
592 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
593 |
if (succeeded) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
594 |
// If we get here we successfully scheduled a collection which |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
595 |
// failed to allocate. No point in trying to allocate |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
596 |
// further. We'll just return NULL. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
597 |
MutexLockerEx x(Heap_lock); |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
598 |
*gc_count_before_ret = total_collections(); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
599 |
return NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
600 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
601 |
} else { |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
602 |
if (*gclocker_retry_count_ret > GCLockerRetryAllocationCount) { |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
603 |
MutexLockerEx x(Heap_lock); |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
604 |
*gc_count_before_ret = total_collections(); |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
605 |
return NULL; |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
606 |
} |
12778
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
607 |
// The GCLocker is either active or the GCLocker initiated |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
608 |
// GC has not yet been performed. Stall until it is and |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
609 |
// then retry the allocation. |
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
610 |
GCLocker::stall_until_clear(); |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
611 |
(*gclocker_retry_count_ret) += 1; |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
612 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
613 |
|
18025 | 614 |
// We can reach here if we were unsuccessful in scheduling a |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
615 |
// collection (because another thread beat us to it) or if we were |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
616 |
// stalled due to the GC locker. In either can we should retry the |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
617 |
// allocation attempt in case another thread successfully |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
618 |
// performed a collection and reclaimed enough space. We do the |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
619 |
// first attempt (without holding the Heap_lock) here and the |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
620 |
// follow-on attempt will be at the start of the next loop |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
621 |
// iteration (after taking the Heap_lock). |
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
622 |
result = _allocator->attempt_allocation(word_size, context); |
12227
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
623 |
if (result != NULL) { |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
624 |
return result; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
625 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
626 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
627 |
// Give a warning if we seem to be looping forever. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
628 |
if ((QueuedAllocationWarningCount > 0) && |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
629 |
(try_count % QueuedAllocationWarningCount == 0)) { |
37073
c39d0903390b
8151605: Change warning() to log_warning(gc) in the GC code
brutisso
parents:
37039
diff
changeset
|
630 |
log_warning(gc)("G1CollectedHeap::attempt_allocation_slow() " |
c39d0903390b
8151605: Change warning() to log_warning(gc) in the GC code
brutisso
parents:
37039
diff
changeset
|
631 |
"retries %d times", try_count); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
632 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
633 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
634 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
635 |
ShouldNotReachHere(); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
636 |
return NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
637 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
638 |
|
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
639 |
void G1CollectedHeap::begin_archive_alloc_range() { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
640 |
assert_at_safepoint(true /* should_be_vm_thread */); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
641 |
if (_archive_allocator == NULL) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
642 |
_archive_allocator = G1ArchiveAllocator::create_allocator(this); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
643 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
644 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
645 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
646 |
bool G1CollectedHeap::is_archive_alloc_too_large(size_t word_size) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
647 |
// Allocations in archive regions cannot be of a size that would be considered |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
648 |
// humongous even for a minimum-sized region, because G1 region sizes/boundaries |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
649 |
// may be different at archive-restore time. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
650 |
return word_size >= humongous_threshold_for(HeapRegion::min_region_size_in_words()); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
651 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
652 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
653 |
HeapWord* G1CollectedHeap::archive_mem_allocate(size_t word_size) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
654 |
assert_at_safepoint(true /* should_be_vm_thread */); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
655 |
assert(_archive_allocator != NULL, "_archive_allocator not initialized"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
656 |
if (is_archive_alloc_too_large(word_size)) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
657 |
return NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
658 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
659 |
return _archive_allocator->archive_mem_allocate(word_size); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
660 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
661 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
662 |
void G1CollectedHeap::end_archive_alloc_range(GrowableArray<MemRegion>* ranges, |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
663 |
size_t end_alignment_in_bytes) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
664 |
assert_at_safepoint(true /* should_be_vm_thread */); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
665 |
assert(_archive_allocator != NULL, "_archive_allocator not initialized"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
666 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
667 |
// Call complete_archive to do the real work, filling in the MemRegion |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
668 |
// array with the archive regions. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
669 |
_archive_allocator->complete_archive(ranges, end_alignment_in_bytes); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
670 |
delete _archive_allocator; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
671 |
_archive_allocator = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
672 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
673 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
674 |
bool G1CollectedHeap::check_archive_addresses(MemRegion* ranges, size_t count) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
675 |
assert(ranges != NULL, "MemRegion array NULL"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
676 |
assert(count != 0, "No MemRegions provided"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
677 |
MemRegion reserved = _hrm.reserved(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
678 |
for (size_t i = 0; i < count; i++) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
679 |
if (!reserved.contains(ranges[i].start()) || !reserved.contains(ranges[i].last())) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
680 |
return false; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
681 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
682 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
683 |
return true; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
684 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
685 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
686 |
bool G1CollectedHeap::alloc_archive_regions(MemRegion* ranges, size_t count) { |
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
687 |
assert(!is_init_completed(), "Expect to be called at JVM init time"); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
688 |
assert(ranges != NULL, "MemRegion array NULL"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
689 |
assert(count != 0, "No MemRegions provided"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
690 |
MutexLockerEx x(Heap_lock); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
691 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
692 |
MemRegion reserved = _hrm.reserved(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
693 |
HeapWord* prev_last_addr = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
694 |
HeapRegion* prev_last_region = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
695 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
696 |
// Temporarily disable pretouching of heap pages. This interface is used |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
697 |
// when mmap'ing archived heap data in, so pre-touching is wasted. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
698 |
FlagSetting fs(AlwaysPreTouch, false); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
699 |
|
46285
5b673a9fa682
8171235: Move archive object code from G1MarkSweep into G1ArchiveAllocator
sjohanss
parents:
46282
diff
changeset
|
700 |
// Enable archive object checking used by G1MarkSweep. We have to let it know |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
701 |
// about each archive range, so that objects in those ranges aren't marked. |
46285
5b673a9fa682
8171235: Move archive object code from G1MarkSweep into G1ArchiveAllocator
sjohanss
parents:
46282
diff
changeset
|
702 |
G1ArchiveAllocator::enable_archive_object_check(); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
703 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
704 |
// For each specified MemRegion range, allocate the corresponding G1 |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
705 |
// regions and mark them as archive regions. We expect the ranges in |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
706 |
// ascending starting address order, without overlap. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
707 |
for (size_t i = 0; i < count; i++) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
708 |
MemRegion curr_range = ranges[i]; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
709 |
HeapWord* start_address = curr_range.start(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
710 |
size_t word_size = curr_range.word_size(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
711 |
HeapWord* last_address = curr_range.last(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
712 |
size_t commits = 0; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
713 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
714 |
guarantee(reserved.contains(start_address) && reserved.contains(last_address), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
715 |
"MemRegion outside of heap [" PTR_FORMAT ", " PTR_FORMAT "]", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
716 |
p2i(start_address), p2i(last_address)); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
717 |
guarantee(start_address > prev_last_addr, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
718 |
"Ranges not in ascending order: " PTR_FORMAT " <= " PTR_FORMAT , |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
719 |
p2i(start_address), p2i(prev_last_addr)); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
720 |
prev_last_addr = last_address; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
721 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
722 |
// Check for ranges that start in the same G1 region in which the previous |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
723 |
// range ended, and adjust the start address so we don't try to allocate |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
724 |
// the same region again. If the current range is entirely within that |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
725 |
// region, skip it, just adjusting the recorded top. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
726 |
HeapRegion* start_region = _hrm.addr_to_region(start_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
727 |
if ((prev_last_region != NULL) && (start_region == prev_last_region)) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
728 |
start_address = start_region->end(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
729 |
if (start_address > last_address) { |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
730 |
increase_used(word_size * HeapWordSize); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
731 |
start_region->set_top(last_address + 1); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
732 |
continue; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
733 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
734 |
start_region->set_top(start_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
735 |
curr_range = MemRegion(start_address, last_address + 1); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
736 |
start_region = _hrm.addr_to_region(start_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
737 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
738 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
739 |
// Perform the actual region allocation, exiting if it fails. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
740 |
// Then note how much new space we have allocated. |
42595
b1ae41a4eae9
8169703: G1 crashes with guarantee(pretouch_gang != NULL) failed: No pretouch gang specified
tschatzl
parents:
42589
diff
changeset
|
741 |
if (!_hrm.allocate_containing_regions(curr_range, &commits, workers())) { |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
742 |
return false; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
743 |
} |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
744 |
increase_used(word_size * HeapWordSize); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
745 |
if (commits != 0) { |
35061 | 746 |
log_debug(gc, ergo, heap)("Attempt heap expansion (allocate archive regions). Total size: " SIZE_FORMAT "B", |
747 |
HeapRegion::GrainWords * HeapWordSize * commits); |
|
748 |
||
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
749 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
750 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
751 |
// Mark each G1 region touched by the range as archive, add it to the old set, |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
752 |
// and set the allocation context and top. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
753 |
HeapRegion* curr_region = _hrm.addr_to_region(start_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
754 |
HeapRegion* last_region = _hrm.addr_to_region(last_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
755 |
prev_last_region = last_region; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
756 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
757 |
while (curr_region != NULL) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
758 |
assert(curr_region->is_empty() && !curr_region->is_pinned(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
759 |
"Region already in use (index %u)", curr_region->hrm_index()); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
760 |
curr_region->set_allocation_context(AllocationContext::system()); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
761 |
curr_region->set_archive(); |
35079
edab77f91231
8145301: Improve and unify the printout format for the g1HRPrinter.
david
parents:
35065
diff
changeset
|
762 |
_hr_printer.alloc(curr_region); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
763 |
_old_set.add(curr_region); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
764 |
if (curr_region != last_region) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
765 |
curr_region->set_top(curr_region->end()); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
766 |
curr_region = _hrm.next_region_in_heap(curr_region); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
767 |
} else { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
768 |
curr_region->set_top(last_address + 1); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
769 |
curr_region = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
770 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
771 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
772 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
773 |
// Notify mark-sweep of the archive range. |
46285
5b673a9fa682
8171235: Move archive object code from G1MarkSweep into G1ArchiveAllocator
sjohanss
parents:
46282
diff
changeset
|
774 |
G1ArchiveAllocator::set_range_archive(curr_range, true); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
775 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
776 |
return true; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
777 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
778 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
779 |
void G1CollectedHeap::fill_archive_regions(MemRegion* ranges, size_t count) { |
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
780 |
assert(!is_init_completed(), "Expect to be called at JVM init time"); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
781 |
assert(ranges != NULL, "MemRegion array NULL"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
782 |
assert(count != 0, "No MemRegions provided"); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
783 |
MemRegion reserved = _hrm.reserved(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
784 |
HeapWord *prev_last_addr = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
785 |
HeapRegion* prev_last_region = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
786 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
787 |
// For each MemRegion, create filler objects, if needed, in the G1 regions |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
788 |
// that contain the address range. The address range actually within the |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
789 |
// MemRegion will not be modified. That is assumed to have been initialized |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
790 |
// elsewhere, probably via an mmap of archived heap data. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
791 |
MutexLockerEx x(Heap_lock); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
792 |
for (size_t i = 0; i < count; i++) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
793 |
HeapWord* start_address = ranges[i].start(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
794 |
HeapWord* last_address = ranges[i].last(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
795 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
796 |
assert(reserved.contains(start_address) && reserved.contains(last_address), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
797 |
"MemRegion outside of heap [" PTR_FORMAT ", " PTR_FORMAT "]", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
798 |
p2i(start_address), p2i(last_address)); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
799 |
assert(start_address > prev_last_addr, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
800 |
"Ranges not in ascending order: " PTR_FORMAT " <= " PTR_FORMAT , |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
801 |
p2i(start_address), p2i(prev_last_addr)); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
802 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
803 |
HeapRegion* start_region = _hrm.addr_to_region(start_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
804 |
HeapRegion* last_region = _hrm.addr_to_region(last_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
805 |
HeapWord* bottom_address = start_region->bottom(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
806 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
807 |
// Check for a range beginning in the same region in which the |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
808 |
// previous one ended. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
809 |
if (start_region == prev_last_region) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
810 |
bottom_address = prev_last_addr + 1; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
811 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
812 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
813 |
// Verify that the regions were all marked as archive regions by |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
814 |
// alloc_archive_regions. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
815 |
HeapRegion* curr_region = start_region; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
816 |
while (curr_region != NULL) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
817 |
guarantee(curr_region->is_archive(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
818 |
"Expected archive region at index %u", curr_region->hrm_index()); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
819 |
if (curr_region != last_region) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
820 |
curr_region = _hrm.next_region_in_heap(curr_region); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
821 |
} else { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
822 |
curr_region = NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
823 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
824 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
825 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
826 |
prev_last_addr = last_address; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
827 |
prev_last_region = last_region; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
828 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
829 |
// Fill the memory below the allocated range with dummy object(s), |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
830 |
// if the region bottom does not match the range start, or if the previous |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
831 |
// range ended within the same G1 region, and there is a gap. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
832 |
if (start_address != bottom_address) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
833 |
size_t fill_size = pointer_delta(start_address, bottom_address); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
834 |
G1CollectedHeap::fill_with_objects(bottom_address, fill_size); |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
835 |
increase_used(fill_size * HeapWordSize); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
836 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
837 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
838 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
839 |
|
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
840 |
inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size, |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
841 |
uint* gc_count_before_ret, |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
842 |
uint* gclocker_retry_count_ret) { |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
843 |
assert_heap_not_locked_and_not_at_safepoint(); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
844 |
assert(!is_humongous(word_size), "attempt_allocation() should not " |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
845 |
"be called for humongous allocation requests"); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
846 |
|
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
847 |
AllocationContext_t context = AllocationContext::current(); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
848 |
HeapWord* result = _allocator->attempt_allocation(word_size, context); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
849 |
|
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
850 |
if (result == NULL) { |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
851 |
result = attempt_allocation_slow(word_size, |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
852 |
context, |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
853 |
gc_count_before_ret, |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
854 |
gclocker_retry_count_ret); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
855 |
} |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
856 |
assert_heap_not_locked(); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
857 |
if (result != NULL) { |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
858 |
dirty_young_block(result, word_size); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
859 |
} |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
860 |
return result; |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
861 |
} |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
862 |
|
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
863 |
void G1CollectedHeap::dealloc_archive_regions(MemRegion* ranges, size_t count) { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
864 |
assert(!is_init_completed(), "Expect to be called at JVM init time"); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
865 |
assert(ranges != NULL, "MemRegion array NULL"); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
866 |
assert(count != 0, "No MemRegions provided"); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
867 |
MemRegion reserved = _hrm.reserved(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
868 |
HeapWord* prev_last_addr = NULL; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
869 |
HeapRegion* prev_last_region = NULL; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
870 |
size_t size_used = 0; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
871 |
size_t uncommitted_regions = 0; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
872 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
873 |
// For each Memregion, free the G1 regions that constitute it, and |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
874 |
// notify mark-sweep that the range is no longer to be considered 'archive.' |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
875 |
MutexLockerEx x(Heap_lock); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
876 |
for (size_t i = 0; i < count; i++) { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
877 |
HeapWord* start_address = ranges[i].start(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
878 |
HeapWord* last_address = ranges[i].last(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
879 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
880 |
assert(reserved.contains(start_address) && reserved.contains(last_address), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
881 |
"MemRegion outside of heap [" PTR_FORMAT ", " PTR_FORMAT "]", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
882 |
p2i(start_address), p2i(last_address)); |
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
883 |
assert(start_address > prev_last_addr, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
884 |
"Ranges not in ascending order: " PTR_FORMAT " <= " PTR_FORMAT , |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
885 |
p2i(start_address), p2i(prev_last_addr)); |
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
886 |
size_used += ranges[i].byte_size(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
887 |
prev_last_addr = last_address; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
888 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
889 |
HeapRegion* start_region = _hrm.addr_to_region(start_address); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
890 |
HeapRegion* last_region = _hrm.addr_to_region(last_address); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
891 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
892 |
// Check for ranges that start in the same G1 region in which the previous |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
893 |
// range ended, and adjust the start address so we don't try to free |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
894 |
// the same region again. If the current range is entirely within that |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
895 |
// region, skip it. |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
896 |
if (start_region == prev_last_region) { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
897 |
start_address = start_region->end(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
898 |
if (start_address > last_address) { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
899 |
continue; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
900 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
901 |
start_region = _hrm.addr_to_region(start_address); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
902 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
903 |
prev_last_region = last_region; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
904 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
905 |
// After verifying that each region was marked as an archive region by |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
906 |
// alloc_archive_regions, set it free and empty and uncommit it. |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
907 |
HeapRegion* curr_region = start_region; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
908 |
while (curr_region != NULL) { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
909 |
guarantee(curr_region->is_archive(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
910 |
"Expected archive region at index %u", curr_region->hrm_index()); |
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
911 |
uint curr_index = curr_region->hrm_index(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
912 |
_old_set.remove(curr_region); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
913 |
curr_region->set_free(); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
914 |
curr_region->set_top(curr_region->bottom()); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
915 |
if (curr_region != last_region) { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
916 |
curr_region = _hrm.next_region_in_heap(curr_region); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
917 |
} else { |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
918 |
curr_region = NULL; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
919 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
920 |
_hrm.shrink_at(curr_index, 1); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
921 |
uncommitted_regions++; |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
922 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
923 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
924 |
// Notify mark-sweep that this is no longer an archive range. |
46285
5b673a9fa682
8171235: Move archive object code from G1MarkSweep into G1ArchiveAllocator
sjohanss
parents:
46282
diff
changeset
|
925 |
G1ArchiveAllocator::set_range_archive(ranges[i], false); |
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
926 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
927 |
|
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
928 |
if (uncommitted_regions != 0) { |
35061 | 929 |
log_debug(gc, ergo, heap)("Attempt heap shrinking (uncommitted archive regions). Total size: " SIZE_FORMAT "B", |
930 |
HeapRegion::GrainWords * HeapWordSize * uncommitted_regions); |
|
32589
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
931 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
932 |
decrease_used(size_used); |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
933 |
} |
f86fb16fcab0
8131734: assert(!is_null(v)) failed: narrow klass value can never be zero with -Xshared:auto
jiangli
parents:
32382
diff
changeset
|
934 |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
935 |
HeapWord* G1CollectedHeap::attempt_allocation_humongous(size_t word_size, |
29078 | 936 |
uint* gc_count_before_ret, |
937 |
uint* gclocker_retry_count_ret) { |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
938 |
// The structure of this method has a lot of similarities to |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
939 |
// attempt_allocation_slow(). The reason these two were not merged |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
940 |
// into a single one is that such a method would require several "if |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
941 |
// allocation is not humongous do this, otherwise do that" |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
942 |
// conditional paths which would obscure its flow. In fact, an early |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
943 |
// version of this code did use a unified method which was harder to |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
944 |
// follow and, as a result, it had subtle bugs that were hard to |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
945 |
// track down. So keeping these two methods separate allows each to |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
946 |
// be more readable. It will be good to keep these two in sync as |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
947 |
// much as possible. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
948 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
949 |
assert_heap_not_locked_and_not_at_safepoint(); |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
950 |
assert(is_humongous(word_size), "attempt_allocation_humongous() " |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
951 |
"should only be called for humongous allocations"); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
952 |
|
11581
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
953 |
// Humongous objects can exhaust the heap quickly, so we should check if we |
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
954 |
// need to start a marking cycle at each humongous object allocation. We do |
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
955 |
// the check before we do the actual allocation. The reason for doing it |
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
956 |
// before the allocation is that we avoid having to keep track of the newly |
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
957 |
// allocated memory while we do a GC. |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
958 |
if (g1_policy()->need_to_start_conc_mark("concurrent humongous allocation", |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
959 |
word_size)) { |
11581
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
960 |
collect(GCCause::_g1_humongous_allocation); |
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
961 |
} |
b1afc51ad34e
7132311: G1: assert((s == klass->oop_size(this)) || (Universe::heap()->is_gc_active() && ((is_typeArray()...
brutisso
parents:
11580
diff
changeset
|
962 |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
963 |
// We will loop until a) we manage to successfully perform the |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
964 |
// allocation or b) we successfully schedule a collection which |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
965 |
// fails to perform the allocation. b) is the only case when we'll |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
966 |
// return NULL. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
967 |
HeapWord* result = NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
968 |
for (int try_count = 1; /* we'll return */; try_count += 1) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
969 |
bool should_try_gc; |
29078 | 970 |
uint gc_count_before; |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
971 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
972 |
{ |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
973 |
MutexLockerEx x(Heap_lock); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
974 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
975 |
// Given that humongous objects are not allocated in young |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
976 |
// regions, we'll first try to do the allocation without doing a |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
977 |
// collection hoping that there's enough space in the heap. |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
978 |
result = humongous_obj_allocate(word_size, AllocationContext::current()); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
979 |
if (result != NULL) { |
34298
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
980 |
size_t size_in_regions = humongous_obj_size_in_regions(word_size); |
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
981 |
g1_policy()->add_bytes_allocated_in_old_since_last_gc(size_in_regions * HeapRegion::GrainBytes); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
982 |
return result; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
983 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
984 |
|
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
985 |
if (GCLocker::is_active_and_needs_gc()) { |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
986 |
should_try_gc = false; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
987 |
} else { |
12778
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
988 |
// The GCLocker may not be active but the GCLocker initiated |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
989 |
// GC may not yet have been performed (GCLocker::needs_gc() |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
990 |
// returns true). In this case we do not try this GC and |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
991 |
// wait until the GCLocker initiated GC is performed, and |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
992 |
// then retry the allocation. |
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
993 |
if (GCLocker::needs_gc()) { |
12778
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
994 |
should_try_gc = false; |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
995 |
} else { |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
996 |
// Read the GC count while still holding the Heap_lock. |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
997 |
gc_count_before = total_collections(); |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
998 |
should_try_gc = true; |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
999 |
} |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1000 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1001 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1002 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1003 |
if (should_try_gc) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1004 |
// If we failed to allocate the humongous object, we should try to |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1005 |
// do a collection pause (if we're allowed) in case it reclaims |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1006 |
// enough space for the allocation to succeed after the pause. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1007 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1008 |
bool succeeded; |
19549
60e5c7cafdca
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
19341
diff
changeset
|
1009 |
result = do_collection_pause(word_size, gc_count_before, &succeeded, |
29078 | 1010 |
GCCause::_g1_humongous_allocation); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1011 |
if (result != NULL) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1012 |
assert(succeeded, "only way to get back a non-NULL result"); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1013 |
return result; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1014 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1015 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1016 |
if (succeeded) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1017 |
// If we get here we successfully scheduled a collection which |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1018 |
// failed to allocate. No point in trying to allocate |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1019 |
// further. We'll just return NULL. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1020 |
MutexLockerEx x(Heap_lock); |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
1021 |
*gc_count_before_ret = total_collections(); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1022 |
return NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1023 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1024 |
} else { |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
1025 |
if (*gclocker_retry_count_ret > GCLockerRetryAllocationCount) { |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
1026 |
MutexLockerEx x(Heap_lock); |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
1027 |
*gc_count_before_ret = total_collections(); |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
1028 |
return NULL; |
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
1029 |
} |
12778
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
1030 |
// The GCLocker is either active or the GCLocker initiated |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
1031 |
// GC has not yet been performed. Stall until it is and |
b2bee9c4b41d
7143858: G1: Back to back young GCs with the second GC having a minimally sized eden
johnc
parents:
12630
diff
changeset
|
1032 |
// then retry the allocation. |
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
1033 |
GCLocker::stall_until_clear(); |
16604
800a65bfe347
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
15608
diff
changeset
|
1034 |
(*gclocker_retry_count_ret) += 1; |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1035 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1036 |
|
18025 | 1037 |
// We can reach here if we were unsuccessful in scheduling a |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1038 |
// collection (because another thread beat us to it) or if we were |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1039 |
// stalled due to the GC locker. In either can we should retry the |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1040 |
// allocation attempt in case another thread successfully |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1041 |
// performed a collection and reclaimed enough space. Give a |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1042 |
// warning if we seem to be looping forever. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1043 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1044 |
if ((QueuedAllocationWarningCount > 0) && |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1045 |
(try_count % QueuedAllocationWarningCount == 0)) { |
37073
c39d0903390b
8151605: Change warning() to log_warning(gc) in the GC code
brutisso
parents:
37039
diff
changeset
|
1046 |
log_warning(gc)("G1CollectedHeap::attempt_allocation_humongous() " |
c39d0903390b
8151605: Change warning() to log_warning(gc) in the GC code
brutisso
parents:
37039
diff
changeset
|
1047 |
"retries %d times", try_count); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1048 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1049 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1050 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1051 |
ShouldNotReachHere(); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1052 |
return NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1053 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1054 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1055 |
HeapWord* G1CollectedHeap::attempt_allocation_at_safepoint(size_t word_size, |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1056 |
AllocationContext_t context, |
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1057 |
bool expect_null_mutator_alloc_region) { |
7923 | 1058 |
assert_at_safepoint(true /* should_be_vm_thread */); |
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
1059 |
assert(!_allocator->has_mutator_alloc_region(context) || !expect_null_mutator_alloc_region, |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1060 |
"the current alloc region was unexpectedly found to be non-NULL"); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1061 |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
1062 |
if (!is_humongous(word_size)) { |
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
1063 |
return _allocator->attempt_allocation_locked(word_size, context); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1064 |
} else { |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1065 |
HeapWord* result = humongous_obj_allocate(word_size, context); |
11576
e0bef5ca4602
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
11455
diff
changeset
|
1066 |
if (result != NULL && g1_policy()->need_to_start_conc_mark("STW humongous allocation")) { |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
1067 |
collector_state()->set_initiate_conc_mark_if_possible(true); |
11576
e0bef5ca4602
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
11455
diff
changeset
|
1068 |
} |
e0bef5ca4602
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
11455
diff
changeset
|
1069 |
return result; |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1070 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1071 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1072 |
ShouldNotReachHere(); |
1374 | 1073 |
} |
1074 |
||
1075 |
class PostMCRemSetClearClosure: public HeapRegionClosure { |
|
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1076 |
G1CollectedHeap* _g1h; |
1374 | 1077 |
ModRefBarrierSet* _mr_bs; |
1078 |
public: |
|
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1079 |
PostMCRemSetClearClosure(G1CollectedHeap* g1h, ModRefBarrierSet* mr_bs) : |
19339 | 1080 |
_g1h(g1h), _mr_bs(mr_bs) {} |
1081 |
||
1374 | 1082 |
bool doHeapRegion(HeapRegion* r) { |
19339 | 1083 |
HeapRegionRemSet* hrrs = r->rem_set(); |
1084 |
||
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
1085 |
_g1h->reset_gc_time_stamps(r); |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
1086 |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
1087 |
if (r->is_continues_humongous()) { |
19339 | 1088 |
// We'll assert that the strong code root list and RSet is empty |
1089 |
assert(hrrs->strong_code_roots_list_length() == 0, "sanity"); |
|
1090 |
assert(hrrs->occupied() == 0, "RSet should be empty"); |
|
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
1091 |
} else { |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
1092 |
hrrs->clear(); |
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1093 |
} |
1374 | 1094 |
// You might think here that we could clear just the cards |
1095 |
// corresponding to the used region. But no: if we leave a dirty card |
|
1096 |
// in a region we might allocate into, then it would prevent that card |
|
1097 |
// from being enqueued, and cause it to be missed. |
|
1098 |
// Re: the performance cost: we shouldn't be doing full GC anyway! |
|
1099 |
_mr_bs->clear(MemRegion(r->bottom(), r->end())); |
|
19339 | 1100 |
|
1374 | 1101 |
return false; |
1102 |
} |
|
1103 |
}; |
|
1104 |
||
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1105 |
void G1CollectedHeap::clear_rsets_post_compaction() { |
20309 | 1106 |
PostMCRemSetClearClosure rs_clear(this, g1_barrier_set()); |
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1107 |
heap_region_iterate(&rs_clear); |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1108 |
} |
1374 | 1109 |
|
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1110 |
class RebuildRSOutOfRegionClosure: public HeapRegionClosure { |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1111 |
G1CollectedHeap* _g1h; |
46575 | 1112 |
RebuildRSOopClosure _cl; |
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1113 |
public: |
30585 | 1114 |
RebuildRSOutOfRegionClosure(G1CollectedHeap* g1, uint worker_i = 0) : |
6958 | 1115 |
_cl(g1->g1_rem_set(), worker_i), |
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1116 |
_g1h(g1) |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1117 |
{ } |
7385
eaca4b61b374
6978187: G1: assert(ParallelGCThreads> 1 || n_yielded() == _hrrs->occupied()) strikes again
johnc
parents:
6980
diff
changeset
|
1118 |
|
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1119 |
bool doHeapRegion(HeapRegion* r) { |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
1120 |
if (!r->is_continues_humongous()) { |
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1121 |
_cl.set_from(r); |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1122 |
r->oop_iterate(&_cl); |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1123 |
} |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1124 |
return false; |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1125 |
} |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1126 |
}; |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1127 |
|
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1128 |
class ParRebuildRSTask: public AbstractGangTask { |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1129 |
G1CollectedHeap* _g1; |
27009
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
1130 |
HeapRegionClaimer _hrclaimer; |
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
1131 |
|
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1132 |
public: |
27009
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
1133 |
ParRebuildRSTask(G1CollectedHeap* g1) : |
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
1134 |
AbstractGangTask("ParRebuildRSTask"), _g1(g1), _hrclaimer(g1->workers()->active_workers()) {} |
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1135 |
|
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
1136 |
void work(uint worker_id) { |
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
1137 |
RebuildRSOutOfRegionClosure rebuild_rs(_g1, worker_id); |
27009
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
1138 |
_g1->heap_region_par_iterate(&rebuild_rs, worker_id, &_hrclaimer); |
2152
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1139 |
} |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1140 |
}; |
99356e7f31b1
6760309: G1: update remembered sets during Full GCs
apetrusenko
parents:
2146
diff
changeset
|
1141 |
|
10001
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1142 |
class PostCompactionPrinterClosure: public HeapRegionClosure { |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1143 |
private: |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1144 |
G1HRPrinter* _hr_printer; |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1145 |
public: |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1146 |
bool doHeapRegion(HeapRegion* hr) { |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1147 |
assert(!hr->is_young(), "not expecting to find young regions"); |
35079
edab77f91231
8145301: Improve and unify the printout format for the g1HRPrinter.
david
parents:
35065
diff
changeset
|
1148 |
_hr_printer->post_compaction(hr); |
10001
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1149 |
return false; |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1150 |
} |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1151 |
|
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1152 |
PostCompactionPrinterClosure(G1HRPrinter* hr_printer) |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1153 |
: _hr_printer(hr_printer) { } |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1154 |
}; |
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
1155 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1156 |
void G1CollectedHeap::print_hrm_post_compaction() { |
35061 | 1157 |
if (_hr_printer.is_active()) { |
1158 |
PostCompactionPrinterClosure cl(hr_printer()); |
|
1159 |
heap_region_iterate(&cl); |
|
1160 |
} |
|
1161 |
||
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1162 |
} |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
1163 |
|
34241 | 1164 |
bool G1CollectedHeap::do_full_collection(bool explicit_gc, |
1165 |
bool clear_all_soft_refs) { |
|
7923 | 1166 |
assert_at_safepoint(true /* should_be_vm_thread */); |
1167 |
||
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
1168 |
if (GCLocker::check_active_before_gc()) { |
7398 | 1169 |
return false; |
5243
99e5a8f5d81f
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
5078
diff
changeset
|
1170 |
} |
99e5a8f5d81f
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
5078
diff
changeset
|
1171 |
|
18025 | 1172 |
STWGCTimer* gc_timer = G1MarkSweep::gc_timer(); |
21767
41eaa9a17059
8028128: Add a type safe alternative for working with counter based data
mgronlun
parents:
21563
diff
changeset
|
1173 |
gc_timer->register_gc_start(); |
18025 | 1174 |
|
1175 |
SerialOldTracer* gc_tracer = G1MarkSweep::gc_tracer(); |
|
33107
77bf0d2069a3
8134953: Make the GC ID available in a central place
brutisso
parents:
33105
diff
changeset
|
1176 |
GCIdMark gc_id_mark; |
18025 | 1177 |
gc_tracer->report_gc_start(gc_cause(), gc_timer->gc_start()); |
1178 |
||
7896
08aadd7aa3ee
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
7659
diff
changeset
|
1179 |
SvcGCMarker sgcm(SvcGCMarker::FULL); |
1374 | 1180 |
ResourceMark rm; |
1181 |
||
11636
3c07b54482a5
7141200: log some interesting information in ring buffers for crashes
never
parents:
11455
diff
changeset
|
1182 |
print_heap_before_gc(); |
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
1183 |
print_heap_regions(); |
18025 | 1184 |
trace_heap_before_gc(gc_tracer); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
1185 |
|
23854
50f7f89b34e0
8038934: Remove prefix allocated_ from methods and variables in Metaspace
ehelin
parents:
23543
diff
changeset
|
1186 |
size_t metadata_prev_used = MetaspaceAux::used_bytes(); |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13517
diff
changeset
|
1187 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1188 |
_verifier->verify_region_sets_optional(); |
1374 | 1189 |
|
5343
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1190 |
const bool do_clear_all_soft_refs = clear_all_soft_refs || |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1191 |
collector_policy()->should_clear_all_soft_refs(); |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1192 |
|
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1193 |
ClearedAllSoftRefs casr(do_clear_all_soft_refs, collector_policy()); |
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1194 |
|
1374 | 1195 |
{ |
1196 |
IsGCActiveMark x; |
|
1197 |
||
1198 |
// Timing |
|
31032
8e72621ca186
8072913: [REDO] GCCause should distinguish jcmd GC.run from System.gc()
ysuenaga
parents:
30881
diff
changeset
|
1199 |
assert(!GCCause::is_user_requested_gc(gc_cause()) || explicit_gc, "invariant"); |
35061 | 1200 |
GCTraceCPUTime tcpu; |
12511 | 1201 |
|
1374 | 1202 |
{ |
35061 | 1203 |
GCTraceTime(Info, gc) tm("Pause Full", NULL, gc_cause(), true); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1204 |
TraceCollectorStats tcs(g1mm()->full_collection_counters()); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1205 |
TraceMemoryManagerStats tms(true /* fullGC */, gc_cause()); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1206 |
|
35909
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1207 |
G1HeapTransition heap_transition(this); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1208 |
g1_policy()->record_full_collection_start(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1209 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1210 |
// Note: When we have a more flexible GC logging framework that |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1211 |
// allows us to add optional attributes to a GC log record we |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1212 |
// could consider timing and reporting how long we wait in the |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1213 |
// following two methods. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1214 |
wait_while_free_regions_coming(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1215 |
// If we start the compaction before the CM threads finish |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1216 |
// scanning the root regions we might trip them over as we'll |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1217 |
// be moving objects / updating references. So let's wait until |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1218 |
// they are done. By telling them to abort, they should complete |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1219 |
// early. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1220 |
_cm->root_regions()->abort(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1221 |
_cm->root_regions()->wait_until_scan_finished(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1222 |
append_secondary_free_list_if_not_empty_with_lock(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1223 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1224 |
gc_prologue(true); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1225 |
increment_total_collections(true /* full gc */); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1226 |
increment_old_marking_cycles_started(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1227 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1228 |
assert(used() == recalculate_used(), "Should be equal"); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1229 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1230 |
_verifier->verify_before_gc(); |
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1231 |
|
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1232 |
_verifier->check_bitmaps("Full GC Start"); |
18025 | 1233 |
pre_full_gc_dump(gc_timer); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1234 |
|
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
1235 |
#if defined(COMPILER2) || INCLUDE_JVMCI |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
1236 |
DerivedPointerTable::clear(); |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
1237 |
#endif |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1238 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1239 |
// Disable discovery and empty the discovered lists |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1240 |
// for the CM ref processor. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1241 |
ref_processor_cm()->disable_discovery(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1242 |
ref_processor_cm()->abandon_partial_discovery(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1243 |
ref_processor_cm()->verify_no_references_recorded(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1244 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1245 |
// Abandon current iterations of concurrent marking and concurrent |
36084
9a3bf78e9a76
8148992: VM can hang on exit if root region scanning is initiated but not executed
brutisso
parents:
35943
diff
changeset
|
1246 |
// refinement, if any are in progress. |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1247 |
concurrent_mark()->abort(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1248 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1249 |
// Make sure we'll choose a new allocation region afterwards. |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1250 |
_allocator->release_mutator_alloc_region(); |
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1251 |
_allocator->abandon_gc_alloc_regions(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1252 |
g1_rem_set()->cleanupHRRS(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1253 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1254 |
// We may have added regions to the current incremental collection |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1255 |
// set between the last GC or pause and now. We need to clear the |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1256 |
// incremental collection set and then start rebuilding it afresh |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1257 |
// after this full GC. |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
1258 |
abandon_collection_set(collection_set()); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1259 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1260 |
tear_down_region_sets(false /* free_list_only */); |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
1261 |
collector_state()->set_gcs_are_young(true); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1262 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1263 |
// See the comments in g1CollectedHeap.hpp and |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1264 |
// G1CollectedHeap::ref_processing_init() about |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1265 |
// how reference processing currently works in G1. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1266 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1267 |
// Temporarily make discovery by the STW ref processor single threaded (non-MT). |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1268 |
ReferenceProcessorMTDiscoveryMutator stw_rp_disc_ser(ref_processor_stw(), false); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1269 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1270 |
// Temporarily clear the STW ref processor's _is_alive_non_header field. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1271 |
ReferenceProcessorIsAliveMutator stw_rp_is_alive_null(ref_processor_stw(), NULL); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1272 |
|
28212
647b7d0efb88
8066827: Remove ReferenceProcessor::clean_up_discovered_references()
kbarrett
parents:
28207
diff
changeset
|
1273 |
ref_processor_stw()->enable_discovery(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1274 |
ref_processor_stw()->setup_policy(do_clear_all_soft_refs); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1275 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1276 |
// Do collection work |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1277 |
{ |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1278 |
HandleMark hm; // Discard invalid handles created during gc |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1279 |
G1MarkSweep::invoke_at_safepoint(ref_processor_stw(), do_clear_all_soft_refs); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1280 |
} |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1281 |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1282 |
assert(num_free_regions() == 0, "we should not have added any free regions"); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1283 |
rebuild_region_sets(false /* free_list_only */); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1284 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1285 |
// Enqueue any discovered reference objects that have |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1286 |
// not been removed from the discovered lists. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1287 |
ref_processor_stw()->enqueue_discovered_references(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1288 |
|
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
1289 |
#if defined(COMPILER2) || INCLUDE_JVMCI |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
1290 |
DerivedPointerTable::update_pointers(); |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
1291 |
#endif |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1292 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1293 |
MemoryService::track_memory_usage(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1294 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1295 |
assert(!ref_processor_stw()->discovery_enabled(), "Postcondition"); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1296 |
ref_processor_stw()->verify_no_references_recorded(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1297 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1298 |
// Delete metaspaces for unloaded class loaders and clean up loader_data graph |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1299 |
ClassLoaderDataGraph::purge(); |
19339 | 1300 |
MetaspaceAux::verify_metrics(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1301 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1302 |
// Note: since we've just done a full GC, concurrent |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1303 |
// marking is no longer active. Therefore we need not |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1304 |
// re-enable reference discovery for the CM ref processor. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1305 |
// That will be done at the start of the next marking cycle. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1306 |
assert(!ref_processor_cm()->discovery_enabled(), "Postcondition"); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1307 |
ref_processor_cm()->verify_no_references_recorded(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1308 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1309 |
reset_gc_time_stamp(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1310 |
// Since everything potentially moved, we will clear all remembered |
18025 | 1311 |
// sets, and clear all cards. Later we will rebuild remembered |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1312 |
// sets. We will also reset the GC time stamps of the regions. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1313 |
clear_rsets_post_compaction(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1314 |
check_gc_time_stamps(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1315 |
|
34241 | 1316 |
resize_if_necessary_after_full_collection(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1317 |
|
35061 | 1318 |
// We should do this after we potentially resize the heap so |
1319 |
// that all the COMMIT / UNCOMMIT events are generated before |
|
1320 |
// the compaction events. |
|
1321 |
print_hrm_post_compaction(); |
|
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1322 |
|
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1323 |
if (_hot_card_cache->use_cache()) { |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1324 |
_hot_card_cache->reset_card_counts(); |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1325 |
_hot_card_cache->reset_hot_cache(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1326 |
} |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1327 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1328 |
// Rebuild remembered sets of all regions. |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1329 |
uint n_workers = |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1330 |
AdaptiveSizePolicy::calc_active_workers(workers()->total_workers(), |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1331 |
workers()->active_workers(), |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1332 |
Threads::number_of_non_daemon_threads()); |
40096
246c62cd9180
8159073: : Error handling incomplete when creating GC threads lazily
jmasa
parents:
39979
diff
changeset
|
1333 |
workers()->update_active_workers(n_workers); |
40922
d9f1eaf18f9a
8165292: The gc+task logging is repeated a lot, decreasing the usefulness of -Xlog:gc*=info
tschatzl
parents:
40914
diff
changeset
|
1334 |
log_info(gc,task)("Using %u workers of %u to rebuild remembered set", n_workers, workers()->total_workers()); |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1335 |
|
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1336 |
ParRebuildRSTask rebuild_rs_task(this); |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
1337 |
workers()->run_task(&rebuild_rs_task); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1338 |
|
19339 | 1339 |
// Rebuild the strong code root lists for each region |
1340 |
rebuild_strong_code_roots(); |
|
1341 |
||
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1342 |
if (true) { // FIXME |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1343 |
MetaspaceGC::compute_new_size(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1344 |
} |
1374 | 1345 |
|
2010
c13462bbad17
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
2009
diff
changeset
|
1346 |
#ifdef TRACESPINNING |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1347 |
ParallelTaskTerminator::print_termination_counts(); |
2010
c13462bbad17
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
2009
diff
changeset
|
1348 |
#endif |
c13462bbad17
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
2009
diff
changeset
|
1349 |
|
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1350 |
// Discard all rset updates |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1351 |
JavaThread::dirty_card_queue_set().abandon_logs(); |
26701
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1352 |
assert(dirty_card_queue_set().completed_buffers_num() == 0, "DCQS should be empty"); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1353 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1354 |
// At this point there should be no regions in the |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1355 |
// entire heap tagged as young. |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
1356 |
assert(check_young_list_empty(), "young list should be empty at this point"); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1357 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1358 |
// Update the number of full collections that have been completed. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1359 |
increment_old_marking_cycles_completed(false /* concurrent */); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1360 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1361 |
_hrm.verify_optional(); |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1362 |
_verifier->verify_region_sets_optional(); |
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1363 |
|
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1364 |
_verifier->verify_after_gc(); |
17855
9d0719d7bb85
8015244: G1: Verification after a full GC is incorrectly placed.
johnc
parents:
17854
diff
changeset
|
1365 |
|
24244
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1366 |
// Clear the previous marking bitmap, if needed for bitmap verification. |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1367 |
// Note we cannot do this when we clear the next marking bitmap in |
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1368 |
// G1ConcurrentMark::abort() above since VerifyDuringGC verifies the |
24244
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1369 |
// objects marked during a full GC against the previous bitmap. |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1370 |
// But we need to clear it before calling check_bitmaps below since |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1371 |
// the full GC has compacted objects and updated TAMS but not updated |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1372 |
// the prev bitmap. |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1373 |
if (G1VerifyBitmaps) { |
37414
2672ba9af0dc
8151386: Extract card live data out of G1ConcurrentMark
tschatzl
parents:
37248
diff
changeset
|
1374 |
GCTraceTime(Debug, gc)("Clear Bitmap for Verification"); |
37122
5318124fe3a8
8151126: Clean up duplicate code for clearing the mark bitmaps
tschatzl
parents:
37085
diff
changeset
|
1375 |
_cm->clear_prev_bitmap(workers()); |
24244
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1376 |
} |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1377 |
_verifier->check_bitmaps("Full GC End"); |
24244
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
1378 |
|
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
1379 |
start_new_collection_set(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1380 |
|
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1381 |
_allocator->init_mutator_alloc_region(); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1382 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1383 |
g1_policy()->record_full_collection_end(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1384 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1385 |
// We must call G1MonitoringSupport::update_sizes() in the same scoping level |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1386 |
// as an active TraceMemoryManagerStats object (i.e. before the destructor for the |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1387 |
// TraceMemoryManagerStats is called) so that the G1 memory pools are updated |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1388 |
// before any GC notifications are raised. |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1389 |
g1mm()->update_sizes(); |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1390 |
|
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1391 |
gc_epilogue(true); |
35909
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1392 |
|
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1393 |
heap_transition.print(); |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1394 |
|
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1395 |
print_heap_after_gc(); |
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
1396 |
print_heap_regions(); |
35909
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1397 |
trace_heap_after_gc(gc_tracer); |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1398 |
|
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
1399 |
post_full_gc_dump(gc_timer); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1400 |
} |
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1401 |
|
21767
41eaa9a17059
8028128: Add a type safe alternative for working with counter based data
mgronlun
parents:
21563
diff
changeset
|
1402 |
gc_timer->register_gc_end(); |
18025 | 1403 |
gc_tracer->report_gc_end(gc_timer->gc_end(), gc_timer->time_partitions()); |
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
1404 |
} |
7398 | 1405 |
|
1406 |
return true; |
|
1374 | 1407 |
} |
1408 |
||
1409 |
void G1CollectedHeap::do_full_collection(bool clear_all_soft_refs) { |
|
34241 | 1410 |
// Currently, there is no facility in the do_full_collection(bool) API to notify |
1411 |
// the caller that the collection did not succeed (e.g., because it was locked |
|
1412 |
// out by the GC locker). So, right now, we'll ignore the return value. |
|
1413 |
bool dummy = do_full_collection(true, /* explicit_gc */ |
|
1414 |
clear_all_soft_refs); |
|
1415 |
} |
|
1416 |
||
1417 |
void G1CollectedHeap::resize_if_necessary_after_full_collection() { |
|
1418 |
// Include bytes that will be pre-allocated to support collections, as "used". |
|
1374 | 1419 |
const size_t used_after_gc = used(); |
1420 |
const size_t capacity_after_gc = capacity(); |
|
1421 |
const size_t free_after_gc = capacity_after_gc - used_after_gc; |
|
1422 |
||
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1423 |
// This is enforced in arguments.cpp. |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1424 |
assert(MinHeapFreeRatio <= MaxHeapFreeRatio, |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1425 |
"otherwise the code below doesn't make sense"); |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1426 |
|
1374 | 1427 |
// We don't have floating point command-line arguments |
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1428 |
const double minimum_free_percentage = (double) MinHeapFreeRatio / 100.0; |
1374 | 1429 |
const double maximum_used_percentage = 1.0 - minimum_free_percentage; |
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1430 |
const double maximum_free_percentage = (double) MaxHeapFreeRatio / 100.0; |
1374 | 1431 |
const double minimum_used_percentage = 1.0 - maximum_free_percentage; |
1432 |
||
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1433 |
const size_t min_heap_size = collector_policy()->min_heap_byte_size(); |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1434 |
const size_t max_heap_size = collector_policy()->max_heap_byte_size(); |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1435 |
|
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1436 |
// We have to be careful here as these two calculations can overflow |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1437 |
// 32-bit size_t's. |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1438 |
double used_after_gc_d = (double) used_after_gc; |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1439 |
double minimum_desired_capacity_d = used_after_gc_d / maximum_used_percentage; |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1440 |
double maximum_desired_capacity_d = used_after_gc_d / minimum_used_percentage; |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1441 |
|
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1442 |
// Let's make sure that they are both under the max heap size, which |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1443 |
// by default will make them fit into a size_t. |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1444 |
double desired_capacity_upper_bound = (double) max_heap_size; |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1445 |
minimum_desired_capacity_d = MIN2(minimum_desired_capacity_d, |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1446 |
desired_capacity_upper_bound); |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1447 |
maximum_desired_capacity_d = MIN2(maximum_desired_capacity_d, |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1448 |
desired_capacity_upper_bound); |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1449 |
|
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1450 |
// We can now safely turn them into size_t's. |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1451 |
size_t minimum_desired_capacity = (size_t) minimum_desired_capacity_d; |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1452 |
size_t maximum_desired_capacity = (size_t) maximum_desired_capacity_d; |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1453 |
|
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1454 |
// This assert only makes sense here, before we adjust them |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1455 |
// with respect to the min and max heap size. |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1456 |
assert(minimum_desired_capacity <= maximum_desired_capacity, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
1457 |
"minimum_desired_capacity = " SIZE_FORMAT ", " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
1458 |
"maximum_desired_capacity = " SIZE_FORMAT, |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
1459 |
minimum_desired_capacity, maximum_desired_capacity); |
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1460 |
|
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1461 |
// Should not be greater than the heap max size. No need to adjust |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1462 |
// it with respect to the heap min size as it's a lower bound (i.e., |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1463 |
// we'll try to make the capacity larger than it, not smaller). |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1464 |
minimum_desired_capacity = MIN2(minimum_desired_capacity, max_heap_size); |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1465 |
// Should not be less than the heap min size. No need to adjust it |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1466 |
// with respect to the heap max size as it's an upper bound (i.e., |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1467 |
// we'll try to make the capacity smaller than it, not greater). |
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1468 |
maximum_desired_capacity = MAX2(maximum_desired_capacity, min_heap_size); |
1374 | 1469 |
|
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1470 |
if (capacity_after_gc < minimum_desired_capacity) { |
1374 | 1471 |
// Don't expand unless it's significant |
1472 |
size_t expand_bytes = minimum_desired_capacity - capacity_after_gc; |
|
35061 | 1473 |
|
1474 |
log_debug(gc, ergo, heap)("Attempt heap expansion (capacity lower than min desired capacity after Full GC). " |
|
1475 |
"Capacity: " SIZE_FORMAT "B occupancy: " SIZE_FORMAT "B min_desired_capacity: " SIZE_FORMAT "B (" UINTX_FORMAT " %%)", |
|
1476 |
capacity_after_gc, used_after_gc, minimum_desired_capacity, MinHeapFreeRatio); |
|
1477 |
||
41178 | 1478 |
expand(expand_bytes, _workers); |
1374 | 1479 |
|
1480 |
// No expansion, now see if we want to shrink |
|
6259
81aec0585307
6959014: G1: assert(minimum_desired_capacity <= maximum_desired_capacity) failed: sanity check
tonyp
parents:
6251
diff
changeset
|
1481 |
} else if (capacity_after_gc > maximum_desired_capacity) { |
1374 | 1482 |
// Capacity too large, compute shrinking size |
1483 |
size_t shrink_bytes = capacity_after_gc - maximum_desired_capacity; |
|
35061 | 1484 |
|
1485 |
log_debug(gc, ergo, heap)("Attempt heap shrinking (capacity higher than max desired capacity after Full GC). " |
|
1486 |
"Capacity: " SIZE_FORMAT "B occupancy: " SIZE_FORMAT "B min_desired_capacity: " SIZE_FORMAT "B (" UINTX_FORMAT " %%)", |
|
1487 |
capacity_after_gc, used_after_gc, minimum_desired_capacity, MinHeapFreeRatio); |
|
1488 |
||
1374 | 1489 |
shrink(shrink_bytes); |
1490 |
} |
|
1491 |
} |
|
1492 |
||
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1493 |
HeapWord* G1CollectedHeap::satisfy_failed_allocation_helper(size_t word_size, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1494 |
AllocationContext_t context, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1495 |
bool do_gc, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1496 |
bool clear_all_soft_refs, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1497 |
bool expect_null_mutator_alloc_region, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1498 |
bool* gc_succeeded) { |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1499 |
*gc_succeeded = true; |
7398 | 1500 |
// Let's attempt the allocation first. |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1501 |
HeapWord* result = |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1502 |
attempt_allocation_at_safepoint(word_size, |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1503 |
context, |
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1504 |
expect_null_mutator_alloc_region); |
7398 | 1505 |
if (result != NULL) { |
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1506 |
assert(*gc_succeeded, "sanity"); |
7398 | 1507 |
return result; |
1508 |
} |
|
1374 | 1509 |
|
1510 |
// In a G1 heap, we're supposed to keep allocation from failing by |
|
1511 |
// incremental pauses. Therefore, at least for now, we'll favor |
|
1512 |
// expansion over collection. (This might change in the future if we can |
|
1513 |
// do something smarter than full collection to satisfy a failed alloc.) |
|
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1514 |
result = expand_and_allocate(word_size, context); |
1374 | 1515 |
if (result != NULL) { |
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1516 |
assert(*gc_succeeded, "sanity"); |
1374 | 1517 |
return result; |
1518 |
} |
|
1519 |
||
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1520 |
if (do_gc) { |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1521 |
// Expansion didn't work, we'll try to do a Full GC. |
34241 | 1522 |
*gc_succeeded = do_full_collection(false, /* explicit_gc */ |
1523 |
clear_all_soft_refs); |
|
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1524 |
} |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1525 |
|
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1526 |
return NULL; |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1527 |
} |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1528 |
|
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1529 |
HeapWord* G1CollectedHeap::satisfy_failed_allocation(size_t word_size, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1530 |
AllocationContext_t context, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1531 |
bool* succeeded) { |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1532 |
assert_at_safepoint(true /* should_be_vm_thread */); |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1533 |
|
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1534 |
// Attempts to allocate followed by Full GC. |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1535 |
HeapWord* result = |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1536 |
satisfy_failed_allocation_helper(word_size, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1537 |
context, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1538 |
true, /* do_gc */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1539 |
false, /* clear_all_soft_refs */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1540 |
false, /* expect_null_mutator_alloc_region */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1541 |
succeeded); |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1542 |
|
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1543 |
if (result != NULL || !*succeeded) { |
1374 | 1544 |
return result; |
1545 |
} |
|
1546 |
||
33108
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1547 |
// Attempts to allocate followed by Full GC that will collect all soft references. |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1548 |
result = satisfy_failed_allocation_helper(word_size, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1549 |
context, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1550 |
true, /* do_gc */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1551 |
true, /* clear_all_soft_refs */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1552 |
true, /* expect_null_mutator_alloc_region */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1553 |
succeeded); |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1554 |
|
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1555 |
if (result != NULL || !*succeeded) { |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1556 |
return result; |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1557 |
} |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1558 |
|
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1559 |
// Attempts to allocate, no GC |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1560 |
result = satisfy_failed_allocation_helper(word_size, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1561 |
context, |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1562 |
false, /* do_gc */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1563 |
false, /* clear_all_soft_refs */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1564 |
true, /* expect_null_mutator_alloc_region */ |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1565 |
succeeded); |
6714a3872d8f
8130265: gctests/LargeObjects/large001 fails with OutOfMemoryError: Java heap space
aharlap
parents:
33107
diff
changeset
|
1566 |
|
1374 | 1567 |
if (result != NULL) { |
7398 | 1568 |
assert(*succeeded, "sanity"); |
1374 | 1569 |
return result; |
1570 |
} |
|
1571 |
||
5343
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1572 |
assert(!collector_policy()->should_clear_all_soft_refs(), |
7398 | 1573 |
"Flag should have been handled and cleared prior to this point"); |
5343
95a5c4b89273
6858496: Clear all SoftReferences before an out-of-memory due to GC overhead limit.
jmasa
parents:
5244
diff
changeset
|
1574 |
|
1374 | 1575 |
// What else? We might try synchronous finalization later. If the total |
1576 |
// space available is large enough for the allocation, then a more |
|
1577 |
// complete compaction phase than we've tried so far might be |
|
1578 |
// appropriate. |
|
7398 | 1579 |
assert(*succeeded, "sanity"); |
1374 | 1580 |
return NULL; |
1581 |
} |
|
1582 |
||
1583 |
// Attempting to expand the heap sufficiently |
|
1584 |
// to support an allocation of the given "word_size". If |
|
1585 |
// successful, perform the allocation and return the address of the |
|
1586 |
// allocated block, or else "NULL". |
|
1587 |
||
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1588 |
HeapWord* G1CollectedHeap::expand_and_allocate(size_t word_size, AllocationContext_t context) { |
7923 | 1589 |
assert_at_safepoint(true /* should_be_vm_thread */); |
1590 |
||
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1591 |
_verifier->verify_region_sets_optional(); |
7398 | 1592 |
|
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1593 |
size_t expand_bytes = MAX2(word_size * HeapWordSize, MinHeapDeltaBytes); |
35061 | 1594 |
log_debug(gc, ergo, heap)("Attempt heap expansion (allocation request failed). Allocation request: " SIZE_FORMAT "B", |
1595 |
word_size * HeapWordSize); |
|
1596 |
||
1597 |
||
41178 | 1598 |
if (expand(expand_bytes, _workers)) { |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1599 |
_hrm.verify_optional(); |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1600 |
_verifier->verify_region_sets_optional(); |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1601 |
return attempt_allocation_at_safepoint(word_size, |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1602 |
context, |
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1603 |
false /* expect_null_mutator_alloc_region */); |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1604 |
} |
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1605 |
return NULL; |
1374 | 1606 |
} |
1607 |
||
41178 | 1608 |
bool G1CollectedHeap::expand(size_t expand_bytes, WorkGang* pretouch_workers, double* expand_time_ms) { |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1609 |
size_t aligned_expand_bytes = ReservedSpace::page_align_size_up(expand_bytes); |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46609
diff
changeset
|
1610 |
aligned_expand_bytes = align_up(aligned_expand_bytes, |
1374 | 1611 |
HeapRegion::GrainBytes); |
35061 | 1612 |
|
46456
9c1f0551e0a2
8166191: Missing spaces in log message during heap expansion
tschatzl
parents:
46443
diff
changeset
|
1613 |
log_debug(gc, ergo, heap)("Expand the heap. requested expansion amount: " SIZE_FORMAT "B expansion amount: " SIZE_FORMAT "B", |
35061 | 1614 |
expand_bytes, aligned_expand_bytes); |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1615 |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1616 |
if (is_maximal_no_gc()) { |
35061 | 1617 |
log_debug(gc, ergo, heap)("Did not expand the heap (heap already fully expanded)"); |
20311
7db0b4ad8981
8025605: G1: Heap expansion logging misleading for fully expanded heap
brutisso
parents:
20309
diff
changeset
|
1618 |
return false; |
7db0b4ad8981
8025605: G1: Heap expansion logging misleading for fully expanded heap
brutisso
parents:
20309
diff
changeset
|
1619 |
} |
7db0b4ad8981
8025605: G1: Heap expansion logging misleading for fully expanded heap
brutisso
parents:
20309
diff
changeset
|
1620 |
|
33577 | 1621 |
double expand_heap_start_time_sec = os::elapsedTime(); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1622 |
uint regions_to_expand = (uint)(aligned_expand_bytes / HeapRegion::GrainBytes); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1623 |
assert(regions_to_expand > 0, "Must expand by at least one region"); |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1624 |
|
41178 | 1625 |
uint expanded_by = _hrm.expand_by(regions_to_expand, pretouch_workers); |
33577 | 1626 |
if (expand_time_ms != NULL) { |
1627 |
*expand_time_ms = (os::elapsedTime() - expand_heap_start_time_sec) * MILLIUNITS; |
|
1628 |
} |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1629 |
|
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1630 |
if (expanded_by > 0) { |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1631 |
size_t actual_expand_bytes = expanded_by * HeapRegion::GrainBytes; |
9989 | 1632 |
assert(actual_expand_bytes <= aligned_expand_bytes, "post-condition"); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1633 |
g1_policy()->record_new_heap_size(num_regions()); |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1634 |
} else { |
35061 | 1635 |
log_debug(gc, ergo, heap)("Did not expand the heap (heap expansion operation failed)"); |
1636 |
||
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1637 |
// The expansion of the virtual storage space was unsuccessful. |
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1638 |
// Let's see if it was because we ran out of swap. |
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1639 |
if (G1ExitOnExpansionFailure && |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1640 |
_hrm.available() >= regions_to_expand) { |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1641 |
// We had head room... |
17087
f0b76c4c93a0
8011661: Insufficient memory message says "malloc" when sometimes it should say "mmap"
ccheung
parents:
16994
diff
changeset
|
1642 |
vm_exit_out_of_memory(aligned_expand_bytes, OOM_MMAP_ERROR, "G1 heap expansion"); |
1374 | 1643 |
} |
1644 |
} |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1645 |
return regions_to_expand > 0; |
1374 | 1646 |
} |
1647 |
||
9989 | 1648 |
void G1CollectedHeap::shrink_helper(size_t shrink_bytes) { |
1374 | 1649 |
size_t aligned_shrink_bytes = |
1650 |
ReservedSpace::page_align_size_down(shrink_bytes); |
|
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46609
diff
changeset
|
1651 |
aligned_shrink_bytes = align_down(aligned_shrink_bytes, |
1374 | 1652 |
HeapRegion::GrainBytes); |
17323
cc153b745ed5
8013872: G1: HeapRegionSeq::shrink_by() has invalid assert
brutisso
parents:
17119
diff
changeset
|
1653 |
uint num_regions_to_remove = (uint)(shrink_bytes / HeapRegion::GrainBytes); |
cc153b745ed5
8013872: G1: HeapRegionSeq::shrink_by() has invalid assert
brutisso
parents:
17119
diff
changeset
|
1654 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1655 |
uint num_regions_removed = _hrm.shrink_by(num_regions_to_remove); |
17323
cc153b745ed5
8013872: G1: HeapRegionSeq::shrink_by() has invalid assert
brutisso
parents:
17119
diff
changeset
|
1656 |
size_t shrunk_bytes = num_regions_removed * HeapRegion::GrainBytes; |
10523
cdb54c167ab0
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
10495
diff
changeset
|
1657 |
|
35061 | 1658 |
|
1659 |
log_debug(gc, ergo, heap)("Shrink the heap. requested shrinking amount: " SIZE_FORMAT "B aligned shrinking amount: " SIZE_FORMAT "B attempted shrinking amount: " SIZE_FORMAT "B", |
|
1660 |
shrink_bytes, aligned_shrink_bytes, shrunk_bytes); |
|
17323
cc153b745ed5
8013872: G1: HeapRegionSeq::shrink_by() has invalid assert
brutisso
parents:
17119
diff
changeset
|
1661 |
if (num_regions_removed > 0) { |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1662 |
g1_policy()->record_new_heap_size(num_regions()); |
10523
cdb54c167ab0
7050392: G1: Introduce flag to generate a log of the G1 ergonomic decisions
tonyp
parents:
10495
diff
changeset
|
1663 |
} else { |
35061 | 1664 |
log_debug(gc, ergo, heap)("Did not expand the heap (heap shrinking operation failed)"); |
1374 | 1665 |
} |
1666 |
} |
|
1667 |
||
1668 |
void G1CollectedHeap::shrink(size_t shrink_bytes) { |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1669 |
_verifier->verify_region_sets_optional(); |
7923 | 1670 |
|
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
1671 |
// We should only reach here at the end of a Full GC which means we |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
1672 |
// should not not be holding to any GC alloc regions. The method |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
1673 |
// below will make sure of that and do any remaining clean up. |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1674 |
_allocator->abandon_gc_alloc_regions(); |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
1675 |
|
7923 | 1676 |
// Instead of tearing down / rebuilding the free lists here, we |
1677 |
// could instead use the remove_all_pending() method on free_list to |
|
1678 |
// remove only the ones that we need to remove. |
|
10996 | 1679 |
tear_down_region_sets(true /* free_list_only */); |
1374 | 1680 |
shrink_helper(shrink_bytes); |
10996 | 1681 |
rebuild_region_sets(true /* free_list_only */); |
7923 | 1682 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1683 |
_hrm.verify_optional(); |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1684 |
_verifier->verify_region_sets_optional(); |
1374 | 1685 |
} |
1686 |
||
1687 |
// Public methods. |
|
1688 |
||
37985
539c597ee0fa
8154154: Separate G1 specific policy code from the CollectorPolicy class hierarchy
mgerdin
parents:
37494
diff
changeset
|
1689 |
G1CollectedHeap::G1CollectedHeap(G1CollectorPolicy* collector_policy) : |
30154 | 1690 |
CollectedHeap(), |
37985
539c597ee0fa
8154154: Separate G1 specific policy code from the CollectorPolicy class hierarchy
mgerdin
parents:
37494
diff
changeset
|
1691 |
_collector_policy(collector_policy), |
539c597ee0fa
8154154: Separate G1 specific policy code from the CollectorPolicy class hierarchy
mgerdin
parents:
37494
diff
changeset
|
1692 |
_g1_policy(create_g1_policy()), |
539c597ee0fa
8154154: Separate G1 specific policy code from the CollectorPolicy class hierarchy
mgerdin
parents:
37494
diff
changeset
|
1693 |
_collection_set(this, _g1_policy), |
4481 | 1694 |
_dirty_card_queue_set(false), |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
1695 |
_is_alive_closure_cm(this), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
1696 |
_is_alive_closure_stw(this), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
1697 |
_ref_processor_cm(NULL), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
1698 |
_ref_processor_stw(NULL), |
35461 | 1699 |
_bot(NULL), |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1700 |
_hot_card_cache(NULL), |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1701 |
_g1_rem_set(NULL), |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1702 |
_cg1r(NULL), |
10671
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
1703 |
_g1mm(NULL), |
1374 | 1704 |
_refine_cte_cl(NULL), |
38081
a3bcb7197d45
8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
tonyp
parents:
38013
diff
changeset
|
1705 |
_preserved_marks_set(true /* in_c_heap */), |
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
1706 |
_secondary_free_list("Secondary Free List", new SecondaryFreeRegionListMtSafeChecker()), |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
1707 |
_old_set("Old Set", false /* humongous */, new OldRegionSetMtSafeChecker()), |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
1708 |
_humongous_set("Master Humongous Set", true /* humongous */, new HumongousRegionSetMtSafeChecker()), |
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1709 |
_humongous_reclaim_candidates(), |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
1710 |
_has_humongous_reclaim_candidates(false), |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
1711 |
_archive_allocator(NULL), |
7923 | 1712 |
_free_regions_coming(false), |
1374 | 1713 |
_gc_time_stamp(0), |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
1714 |
_summary_bytes_used(0), |
36390
a2d991d1d628
8141141: Young and Old gen PLAB stats are similar in output with -XX:+PrintPLAB
tschatzl
parents:
36389
diff
changeset
|
1715 |
_survivor_evac_stats("Young", YoungPLABSize, PLABWeight), |
a2d991d1d628
8141141: Young and Old gen PLAB stats are similar in output with -XX:+PrintPLAB
tschatzl
parents:
36389
diff
changeset
|
1716 |
_old_evac_stats("Old", OldPLABSize, PLABWeight), |
11449
8abed3466567
7113006: G1: excessive ergo output when an evac failure happens
tonyp
parents:
11396
diff
changeset
|
1717 |
_expand_heap_after_alloc_failure(true), |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
1718 |
_old_marking_cycles_started(0), |
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
1719 |
_old_marking_cycles_completed(0), |
24100
7e71ac14ec06
8027553: Change the in_cset_fast_test functionality to use the G1BiasedArray abstraction
tschatzl
parents:
24098
diff
changeset
|
1720 |
_in_cset_fast_test(), |
18025 | 1721 |
_gc_timer_stw(new (ResourceObj::C_HEAP, mtGC) STWGCTimer()), |
37137
62fd3fb4b1b1
8151085: Change G1 concurrent timer and tracer measuring time
sangheki
parents:
37125
diff
changeset
|
1722 |
_gc_tracer_stw(new (ResourceObj::C_HEAP, mtGC) G1NewTracer()) { |
18025 | 1723 |
|
32360 | 1724 |
_workers = new WorkGang("GC Thread", ParallelGCThreads, |
30152 | 1725 |
/* are_GC_task_threads */true, |
1726 |
/* are_ConcurrentGC_threads */false); |
|
1727 |
_workers->initialize_workers(); |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
1728 |
_verifier = new G1HeapVerifier(this); |
30152 | 1729 |
|
30258
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
1730 |
_allocator = G1Allocator::create_allocator(this); |
37144
b7ae74d4d5d8
8151808: Factor G1 heap sizing code out of the G1CollectorPolicy
mgerdin
parents:
37142
diff
changeset
|
1731 |
|
b7ae74d4d5d8
8151808: Factor G1 heap sizing code out of the G1CollectorPolicy
mgerdin
parents:
37142
diff
changeset
|
1732 |
_heap_sizing_policy = G1HeapSizingPolicy::create(this, _g1_policy->analytics()); |
b7ae74d4d5d8
8151808: Factor G1 heap sizing code out of the G1CollectorPolicy
mgerdin
parents:
37142
diff
changeset
|
1733 |
|
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
1734 |
_humongous_object_threshold_in_words = humongous_threshold_for(HeapRegion::GrainWords); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
1735 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
1736 |
// Override the default _filler_array_max_size so that no humongous filler |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
1737 |
// objects are created. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
1738 |
_filler_array_max_size = _humongous_object_threshold_in_words; |
3697
ea9211aa02f5
6819085: G1: use larger and/or user settable region size
tonyp
parents:
3696
diff
changeset
|
1739 |
|
31330
77061bb01b18
8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
david
parents:
31032
diff
changeset
|
1740 |
uint n_queues = ParallelGCThreads; |
1374 | 1741 |
_task_queues = new RefToScanQueueSet(n_queues); |
1742 |
||
18025 | 1743 |
_evacuation_failed_info_array = NEW_C_HEAP_ARRAY(EvacuationFailedInfo, n_queues, mtGC); |
11248
5ff61b0fdf3d
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
11247
diff
changeset
|
1744 |
|
31330
77061bb01b18
8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
david
parents:
31032
diff
changeset
|
1745 |
for (uint i = 0; i < n_queues; i++) { |
1374 | 1746 |
RefToScanQueue* q = new RefToScanQueue(); |
1747 |
q->initialize(); |
|
1748 |
_task_queues->register_queue(i, q); |
|
18025 | 1749 |
::new (&_evacuation_failed_info_array[i]) EvacuationFailedInfo(); |
1750 |
} |
|
11248
5ff61b0fdf3d
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
11247
diff
changeset
|
1751 |
|
13517
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
1752 |
// Initialize the G1EvacuationFailureALot counters and flags. |
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
1753 |
NOT_PRODUCT(reset_evacuation_should_fail();) |
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
1754 |
|
1374 | 1755 |
guarantee(_task_queues != NULL, "task_queues allocation failure."); |
1756 |
} |
|
1757 |
||
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1758 |
G1RegionToSpaceMapper* G1CollectedHeap::create_aux_memory_mapper(const char* description, |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1759 |
size_t size, |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1760 |
size_t translation_factor) { |
30166
a85188117643
8077255: TracePageSizes output reports wrong page size on Windows with G1
tschatzl
parents:
30158
diff
changeset
|
1761 |
size_t preferred_page_size = os::page_size_for_region_unaligned(size, 1); |
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1762 |
// Allocate a new reserved space, preferring to use large pages. |
30166
a85188117643
8077255: TracePageSizes output reports wrong page size on Windows with G1
tschatzl
parents:
30158
diff
changeset
|
1763 |
ReservedSpace rs(size, preferred_page_size); |
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1764 |
G1RegionToSpaceMapper* result = |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1765 |
G1RegionToSpaceMapper::create_mapper(rs, |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1766 |
size, |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1767 |
rs.alignment(), |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1768 |
HeapRegion::GrainBytes, |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1769 |
translation_factor, |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1770 |
mtGC); |
37462 | 1771 |
|
1772 |
os::trace_page_sizes_for_requested_size(description, |
|
1773 |
size, |
|
1774 |
preferred_page_size, |
|
1775 |
rs.alignment(), |
|
1776 |
rs.base(), |
|
1777 |
rs.size()); |
|
1778 |
||
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1779 |
return result; |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1780 |
} |
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1781 |
|
1374 | 1782 |
jint G1CollectedHeap::initialize() { |
4637 | 1783 |
CollectedHeap::pre_initialize(); |
1374 | 1784 |
os::enable_vtime(); |
1785 |
||
1786 |
// Necessary to satisfy locking discipline assertions. |
|
1787 |
||
1788 |
MutexLocker x(Heap_lock); |
|
1789 |
||
1790 |
// While there are no constraints in the GC code that HeapWordSize |
|
1791 |
// be any particular value, there are multiple other areas in the |
|
1792 |
// system which believe this to be true (e.g. oop->object_size in some |
|
1793 |
// cases incorrectly returns the size in wordSize units rather than |
|
1794 |
// HeapWordSize). |
|
1795 |
guarantee(HeapWordSize == wordSize, "HeapWordSize must equal wordSize"); |
|
1796 |
||
1797 |
size_t init_byte_size = collector_policy()->initial_heap_byte_size(); |
|
1798 |
size_t max_byte_size = collector_policy()->max_heap_byte_size(); |
|
21561
c619b1cb4554
8016309: assert(eden_size > 0 && survivor_size > 0) failed: just checking
jwilhelm
parents:
20408
diff
changeset
|
1799 |
size_t heap_alignment = collector_policy()->heap_alignment(); |
1374 | 1800 |
|
1801 |
// Ensure that the sizes are properly aligned. |
|
1802 |
Universe::check_alignment(init_byte_size, HeapRegion::GrainBytes, "g1 heap"); |
|
1803 |
Universe::check_alignment(max_byte_size, HeapRegion::GrainBytes, "g1 heap"); |
|
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
19341
diff
changeset
|
1804 |
Universe::check_alignment(max_byte_size, heap_alignment, "g1 heap"); |
1374 | 1805 |
|
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
1806 |
_refine_cte_cl = new RefineCardTableEntryClosure(); |
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
1807 |
|
32738
a1adf25202fd
8135025: Error message is repeated for large value at G1ConcRefinementThreads
sangheki
parents:
32737
diff
changeset
|
1808 |
jint ecode = JNI_OK; |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1809 |
_cg1r = ConcurrentG1Refine::create(_refine_cte_cl, &ecode); |
32738
a1adf25202fd
8135025: Error message is repeated for large value at G1ConcRefinementThreads
sangheki
parents:
32737
diff
changeset
|
1810 |
if (_cg1r == NULL) { |
a1adf25202fd
8135025: Error message is repeated for large value at G1ConcRefinementThreads
sangheki
parents:
32737
diff
changeset
|
1811 |
return ecode; |
a1adf25202fd
8135025: Error message is repeated for large value at G1ConcRefinementThreads
sangheki
parents:
32737
diff
changeset
|
1812 |
} |
1374 | 1813 |
|
1814 |
// Reserve the maximum. |
|
2254
f13dda645a4b
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
2146
diff
changeset
|
1815 |
|
10237
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1816 |
// When compressed oops are enabled, the preferred heap base |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1817 |
// is calculated by subtracting the requested size from the |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1818 |
// 32Gb boundary and using the result as the base address for |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1819 |
// heap reservation. If the requested size is not aligned to |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1820 |
// HeapRegion::GrainBytes (i.e. the alignment that is passed |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1821 |
// into the ReservedHeapSpace constructor) then the actual |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1822 |
// base of the reserved heap may end up differing from the |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1823 |
// address that was requested (i.e. the preferred heap base). |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1824 |
// If this happens then we could end up using a non-optimal |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1825 |
// compressed oops mode. |
df347ffafa0d
7069863: G1: SIGSEGV running SPECjbb2011 and -UseBiasedLocking
johnc
parents:
10236
diff
changeset
|
1826 |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13517
diff
changeset
|
1827 |
ReservedSpace heap_rs = Universe::reserve_heap(max_byte_size, |
19546
f6b7c9e96ea3
8007074: SIGSEGV at ParMarkBitMap::verify_clear()
stefank
parents:
19341
diff
changeset
|
1828 |
heap_alignment); |
1374 | 1829 |
|
26829
26315213bab8
8055091: CollectedHeap::_reserved usage should be cleaned up
mlarsson
parents:
26701
diff
changeset
|
1830 |
initialize_reserved_region((HeapWord*)heap_rs.base(), (HeapWord*)(heap_rs.base() + heap_rs.size())); |
1374 | 1831 |
|
28217
57791914628c
8067499: G1SATBCardTableModRefBS should not inherit from CardTableModRefBSForCTRS
kbarrett
parents:
28216
diff
changeset
|
1832 |
// Create the barrier set for the entire reserved region. |
57791914628c
8067499: G1SATBCardTableModRefBS should not inherit from CardTableModRefBSForCTRS
kbarrett
parents:
28216
diff
changeset
|
1833 |
G1SATBCardTableLoggingModRefBS* bs |
57791914628c
8067499: G1SATBCardTableModRefBS should not inherit from CardTableModRefBSForCTRS
kbarrett
parents:
28216
diff
changeset
|
1834 |
= new G1SATBCardTableLoggingModRefBS(reserved_region()); |
57791914628c
8067499: G1SATBCardTableModRefBS should not inherit from CardTableModRefBSForCTRS
kbarrett
parents:
28216
diff
changeset
|
1835 |
bs->initialize(); |
57791914628c
8067499: G1SATBCardTableModRefBS should not inherit from CardTableModRefBSForCTRS
kbarrett
parents:
28216
diff
changeset
|
1836 |
assert(bs->is_a(BarrierSet::G1SATBCTLogging), "sanity"); |
57791914628c
8067499: G1SATBCardTableModRefBS should not inherit from CardTableModRefBSForCTRS
kbarrett
parents:
28216
diff
changeset
|
1837 |
set_barrier_set(bs); |
1374 | 1838 |
|
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1839 |
// Create the hot card cache. |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1840 |
_hot_card_cache = new G1HotCardCache(this); |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1841 |
|
1374 | 1842 |
// Also create a G1 rem set. |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1843 |
_g1_rem_set = new G1RemSet(this, g1_barrier_set(), _hot_card_cache); |
1374 | 1844 |
|
1845 |
// Carve out the G1 part of the heap. |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1846 |
ReservedSpace g1_rs = heap_rs.first_part(max_byte_size); |
30612
89fd070a30a3
8076542: G1 does not print heap page size information with -XX:+TracePageSizes
david
parents:
30586
diff
changeset
|
1847 |
size_t page_size = UseLargePages ? os::large_page_size() : os::vm_page_size(); |
26160 | 1848 |
G1RegionToSpaceMapper* heap_storage = |
1849 |
G1RegionToSpaceMapper::create_mapper(g1_rs, |
|
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1850 |
g1_rs.size(), |
30612
89fd070a30a3
8076542: G1 does not print heap page size information with -XX:+TracePageSizes
david
parents:
30586
diff
changeset
|
1851 |
page_size, |
26160 | 1852 |
HeapRegion::GrainBytes, |
1853 |
1, |
|
1854 |
mtJavaHeap); |
|
37462 | 1855 |
os::trace_page_sizes("Heap", |
1856 |
collector_policy()->min_heap_byte_size(), |
|
1857 |
max_byte_size, |
|
1858 |
page_size, |
|
30612
89fd070a30a3
8076542: G1 does not print heap page size information with -XX:+TracePageSizes
david
parents:
30586
diff
changeset
|
1859 |
heap_rs.base(), |
89fd070a30a3
8076542: G1 does not print heap page size information with -XX:+TracePageSizes
david
parents:
30586
diff
changeset
|
1860 |
heap_rs.size()); |
26160 | 1861 |
heap_storage->set_mapping_changed_listener(&_listener); |
1862 |
||
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1863 |
// Create storage for the BOT, card table, card counts table (hot card cache) and the bitmaps. |
26160 | 1864 |
G1RegionToSpaceMapper* bot_storage = |
37462 | 1865 |
create_aux_memory_mapper("Block Offset Table", |
35461 | 1866 |
G1BlockOffsetTable::compute_size(g1_rs.size() / HeapWordSize), |
1867 |
G1BlockOffsetTable::heap_map_factor()); |
|
26160 | 1868 |
|
1869 |
ReservedSpace cardtable_rs(G1SATBCardTableLoggingModRefBS::compute_size(g1_rs.size() / HeapWordSize)); |
|
1870 |
G1RegionToSpaceMapper* cardtable_storage = |
|
37462 | 1871 |
create_aux_memory_mapper("Card Table", |
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1872 |
G1SATBCardTableLoggingModRefBS::compute_size(g1_rs.size() / HeapWordSize), |
30565
ebd5af27fe02
8073632: Make auxiliary data structures know their own translation factor
tschatzl
parents:
30279
diff
changeset
|
1873 |
G1SATBCardTableLoggingModRefBS::heap_map_factor()); |
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1874 |
|
26160 | 1875 |
G1RegionToSpaceMapper* card_counts_storage = |
37462 | 1876 |
create_aux_memory_mapper("Card Counts Table", |
30565
ebd5af27fe02
8073632: Make auxiliary data structures know their own translation factor
tschatzl
parents:
30279
diff
changeset
|
1877 |
G1CardCounts::compute_size(g1_rs.size() / HeapWordSize), |
ebd5af27fe02
8073632: Make auxiliary data structures know their own translation factor
tschatzl
parents:
30279
diff
changeset
|
1878 |
G1CardCounts::heap_map_factor()); |
30158
bd6094906ef8
8058354: SPECjvm2008-Derby -2.7% performance regression on Solaris-X64 starting with 9-b29
tschatzl
parents:
30154
diff
changeset
|
1879 |
|
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1880 |
size_t bitmap_size = G1CMBitMap::compute_size(g1_rs.size()); |
26160 | 1881 |
G1RegionToSpaceMapper* prev_bitmap_storage = |
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1882 |
create_aux_memory_mapper("Prev Bitmap", bitmap_size, G1CMBitMap::heap_map_factor()); |
26160 | 1883 |
G1RegionToSpaceMapper* next_bitmap_storage = |
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1884 |
create_aux_memory_mapper("Next Bitmap", bitmap_size, G1CMBitMap::heap_map_factor()); |
26160 | 1885 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1886 |
_hrm.initialize(heap_storage, prev_bitmap_storage, next_bitmap_storage, bot_storage, cardtable_storage, card_counts_storage); |
26160 | 1887 |
g1_barrier_set()->initialize(cardtable_storage); |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1888 |
// Do later initialization work for concurrent refinement. |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
1889 |
_hot_card_cache->initialize(card_counts_storage); |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
17323
diff
changeset
|
1890 |
|
2996
1097030e5ec3
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
2883
diff
changeset
|
1891 |
// 6843694 - ensure that the maximum region index can fit |
1097030e5ec3
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
2883
diff
changeset
|
1892 |
// in the remembered set structures. |
12381
1438e0fbfa27
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
12379
diff
changeset
|
1893 |
const uint max_region_idx = (1U << (sizeof(RegionIdx_t)*BitsPerByte-1)) - 1; |
2996
1097030e5ec3
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
2883
diff
changeset
|
1894 |
guarantee((max_regions() - 1) <= max_region_idx, "too many regions"); |
1097030e5ec3
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
2883
diff
changeset
|
1895 |
|
37414
2672ba9af0dc
8151386: Extract card live data out of G1ConcurrentMark
tschatzl
parents:
37248
diff
changeset
|
1896 |
g1_rem_set()->initialize(max_capacity(), max_regions()); |
35210
eb1d5c68bf64
8145672: Remove dependency of G1FromCardCache to HeapRegionRemSet
tschatzl
parents:
35204
diff
changeset
|
1897 |
|
2996
1097030e5ec3
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
2883
diff
changeset
|
1898 |
size_t max_cards_per_region = ((size_t)1 << (sizeof(CardIdx_t)*BitsPerByte-1)) - 1; |
3697
ea9211aa02f5
6819085: G1: use larger and/or user settable region size
tonyp
parents:
3696
diff
changeset
|
1899 |
guarantee(HeapRegion::CardsPerRegion > 0, "make sure it's initialized"); |
10677
370a8da2d63f
7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t
johnc
parents:
10674
diff
changeset
|
1900 |
guarantee(HeapRegion::CardsPerRegion < max_cards_per_region, |
3697
ea9211aa02f5
6819085: G1: use larger and/or user settable region size
tonyp
parents:
3696
diff
changeset
|
1901 |
"too many cards per region"); |
2996
1097030e5ec3
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
2883
diff
changeset
|
1902 |
|
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
1903 |
FreeRegionList::set_unrealistically_long_length(max_regions() + 1); |
7923 | 1904 |
|
35461 | 1905 |
_bot = new G1BlockOffsetTable(reserved_region(), bot_storage); |
1374 | 1906 |
|
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1907 |
{ |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1908 |
HeapWord* start = _hrm.reserved().start(); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1909 |
HeapWord* end = _hrm.reserved().end(); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1910 |
size_t granularity = HeapRegion::GrainBytes; |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1911 |
|
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1912 |
_in_cset_fast_test.initialize(start, end, granularity); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1913 |
_humongous_reclaim_candidates.initialize(start, end, granularity); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
1914 |
} |
5350
cccf0925702e
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
5347
diff
changeset
|
1915 |
|
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1916 |
// Create the G1ConcurrentMark data structure and thread. |
1374 | 1917 |
// (Must do this late, so that "max_regions" is defined.) |
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1918 |
_cm = new G1ConcurrentMark(this, prev_bitmap_storage, next_bitmap_storage); |
14740
1431ef92fed1
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
14634
diff
changeset
|
1919 |
if (_cm == NULL || !_cm->completed_initialization()) { |
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
1920 |
vm_shutdown_during_initialization("Could not create/initialize G1ConcurrentMark"); |
14740
1431ef92fed1
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
14634
diff
changeset
|
1921 |
return JNI_ENOMEM; |
1431ef92fed1
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
14634
diff
changeset
|
1922 |
} |
1374 | 1923 |
_cmThread = _cm->cmThread(); |
1924 |
||
2344 | 1925 |
// Now expand into the initial heap size. |
41178 | 1926 |
if (!expand(init_byte_size, _workers)) { |
14740
1431ef92fed1
8000244: G1: Ergonomically set MarkStackSize and use virtual space for global marking stack
johnc
parents:
14634
diff
changeset
|
1927 |
vm_shutdown_during_initialization("Failed to allocate initial heap."); |
8103
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1928 |
return JNI_ENOMEM; |
65eafe3fb3c7
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
8072
diff
changeset
|
1929 |
} |
1374 | 1930 |
|
1931 |
// Perform any initialization actions delegated to the policy. |
|
38013 | 1932 |
g1_policy()->init(this, &_collection_set); |
1374 | 1933 |
|
1934 |
JavaThread::satb_mark_queue_set().initialize(SATB_Q_CBL_mon, |
|
1935 |
SATB_Q_FL_lock, |
|
4481 | 1936 |
G1SATBProcessCompletedThreshold, |
1374 | 1937 |
Shared_SATB_Q_lock); |
2881 | 1938 |
|
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
1939 |
JavaThread::dirty_card_queue_set().initialize(_refine_cte_cl, |
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
1940 |
DirtyCardQ_CBL_mon, |
2881 | 1941 |
DirtyCardQ_FL_lock, |
36371
fd81a4f0ea00
8139651: ConcurrentG1Refine uses ints for many of its members that should be unsigned types
jprovino
parents:
36365
diff
changeset
|
1942 |
(int)concurrent_g1_refine()->yellow_zone(), |
fd81a4f0ea00
8139651: ConcurrentG1Refine uses ints for many of its members that should be unsigned types
jprovino
parents:
36365
diff
changeset
|
1943 |
(int)concurrent_g1_refine()->red_zone(), |
35465 | 1944 |
Shared_DirtyCardQ_lock, |
1945 |
NULL, // fl_owner |
|
1946 |
true); // init_free_ids |
|
2881 | 1947 |
|
26701
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1948 |
dirty_card_queue_set().initialize(NULL, // Should never be called by the Java code |
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1949 |
DirtyCardQ_CBL_mon, |
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1950 |
DirtyCardQ_FL_lock, |
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1951 |
-1, // never trigger processing |
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1952 |
-1, // no limit on length |
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1953 |
Shared_DirtyCardQ_lock, |
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
1954 |
&JavaThread::dirty_card_queue_set()); |
6247 | 1955 |
|
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1956 |
// Here we allocate the dummy HeapRegion that is required by the |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
1957 |
// G1AllocRegion class. |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
1958 |
HeapRegion* dummy_region = _hrm.get_dummy_region(); |
26160 | 1959 |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1960 |
// We'll re-use the same region whether the alloc region will |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1961 |
// require BOT updates or not and, if it doesn't, then a non-young |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1962 |
// region will complain that it cannot support allocations without |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
1963 |
// BOT updates. So we'll tag the dummy region as eden to avoid that. |
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
1964 |
dummy_region->set_eden(); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1965 |
// Make sure it's full. |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1966 |
dummy_region->set_top(dummy_region->end()); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1967 |
G1AllocRegion::setup(this, dummy_region); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1968 |
|
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
1969 |
_allocator->init_mutator_alloc_region(); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
1970 |
|
9338
05ee447bd420
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
9334
diff
changeset
|
1971 |
// Do create of the monitoring and management support so that |
05ee447bd420
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
9334
diff
changeset
|
1972 |
// values in the heap have been properly initialized. |
10671
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
1973 |
_g1mm = new G1MonitoringSupport(this); |
9338
05ee447bd420
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
9334
diff
changeset
|
1974 |
|
23472 | 1975 |
G1StringDedup::initialize(); |
1976 |
||
38081
a3bcb7197d45
8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
tonyp
parents:
38013
diff
changeset
|
1977 |
_preserved_marks_set.init(ParallelGCThreads); |
31976
da45f85bf4e1
8004687: G1: Parallelize object self-forwarding and scanning during an evacuation failure
tschatzl
parents:
31975
diff
changeset
|
1978 |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
1979 |
_collection_set.initialize(max_regions()); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
1980 |
|
1374 | 1981 |
return JNI_OK; |
1982 |
} |
|
1983 |
||
24093
095cc0a63ed9
8037112: gc/g1/TestHumongousAllocInitialMark.java caused SIGSEGV
pliden
parents:
24092
diff
changeset
|
1984 |
void G1CollectedHeap::stop() { |
25070 | 1985 |
// Stop all concurrent threads. We do this to make sure these threads |
35061 | 1986 |
// do not continue to execute and access resources (e.g. logging) |
24848 | 1987 |
// that are destroyed during shutdown. |
25070 | 1988 |
_cg1r->stop(); |
1989 |
_cmThread->stop(); |
|
1990 |
if (G1StringDedup::is_enabled()) { |
|
1991 |
G1StringDedup::stop(); |
|
1992 |
} |
|
24093
095cc0a63ed9
8037112: gc/g1/TestHumongousAllocInitialMark.java caused SIGSEGV
pliden
parents:
24092
diff
changeset
|
1993 |
} |
095cc0a63ed9
8037112: gc/g1/TestHumongousAllocInitialMark.java caused SIGSEGV
pliden
parents:
24092
diff
changeset
|
1994 |
|
19986
33d188c66ed9
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
19729
diff
changeset
|
1995 |
size_t G1CollectedHeap::conservative_max_heap_alignment() { |
33d188c66ed9
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
19729
diff
changeset
|
1996 |
return HeapRegion::max_region_size(); |
33d188c66ed9
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
19729
diff
changeset
|
1997 |
} |
33d188c66ed9
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
19729
diff
changeset
|
1998 |
|
30152 | 1999 |
void G1CollectedHeap::post_initialize() { |
2000 |
ref_processing_init(); |
|
2001 |
} |
|
2002 |
||
1374 | 2003 |
void G1CollectedHeap::ref_processing_init() { |
7399
4ecd771fa2d1
6983204: G1: Nightly test nsk/regression/b4958615 failing with +ExplicitGCInvokesConcurrent
johnc
parents:
7398
diff
changeset
|
2004 |
// Reference processing in G1 currently works as follows: |
4ecd771fa2d1
6983204: G1: Nightly test nsk/regression/b4958615 failing with +ExplicitGCInvokesConcurrent
johnc
parents:
7398
diff
changeset
|
2005 |
// |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2006 |
// * There are two reference processor instances. One is |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2007 |
// used to record and process discovered references |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2008 |
// during concurrent marking; the other is used to |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2009 |
// record and process references during STW pauses |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2010 |
// (both full and incremental). |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2011 |
// * Both ref processors need to 'span' the entire heap as |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2012 |
// the regions in the collection set may be dotted around. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2013 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2014 |
// * For the concurrent marking ref processor: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2015 |
// * Reference discovery is enabled at initial marking. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2016 |
// * Reference discovery is disabled and the discovered |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2017 |
// references processed etc during remarking. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2018 |
// * Reference discovery is MT (see below). |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2019 |
// * Reference discovery requires a barrier (see below). |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2020 |
// * Reference processing may or may not be MT |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2021 |
// (depending on the value of ParallelRefProcEnabled |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2022 |
// and ParallelGCThreads). |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2023 |
// * A full GC disables reference discovery by the CM |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2024 |
// ref processor and abandons any entries on it's |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2025 |
// discovered lists. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2026 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2027 |
// * For the STW processor: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2028 |
// * Non MT discovery is enabled at the start of a full GC. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2029 |
// * Processing and enqueueing during a full GC is non-MT. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2030 |
// * During a full GC, references are processed after marking. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2031 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2032 |
// * Discovery (may or may not be MT) is enabled at the start |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2033 |
// of an incremental evacuation pause. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2034 |
// * References are processed near the end of a STW evacuation pause. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2035 |
// * For both types of GC: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2036 |
// * Discovery is atomic - i.e. not concurrent. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2037 |
// * Reference discovery will not need a barrier. |
7399
4ecd771fa2d1
6983204: G1: Nightly test nsk/regression/b4958615 failing with +ExplicitGCInvokesConcurrent
johnc
parents:
7398
diff
changeset
|
2038 |
|
1374 | 2039 |
MemRegion mr = reserved_region(); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2040 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2041 |
// Concurrent Mark ref processor |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2042 |
_ref_processor_cm = |
8688
493d12ccc6db
6668573: CMS: reference processing crash if ParallelCMSThreads > ParallelGCThreads
ysr
parents:
8680
diff
changeset
|
2043 |
new ReferenceProcessor(mr, // span |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2044 |
ParallelRefProcEnabled && (ParallelGCThreads > 1), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2045 |
// mt processing |
31330
77061bb01b18
8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
david
parents:
31032
diff
changeset
|
2046 |
ParallelGCThreads, |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2047 |
// degree of mt processing |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2048 |
(ParallelGCThreads > 1) || (ConcGCThreads > 1), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2049 |
// mt discovery |
31330
77061bb01b18
8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
david
parents:
31032
diff
changeset
|
2050 |
MAX2(ParallelGCThreads, ConcGCThreads), |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2051 |
// degree of mt discovery |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2052 |
false, |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2053 |
// Reference discovery is not atomic |
24845
e8b8894a77df
8043239: G1: Missing post barrier in processing of j.l.ref.Reference objects
brutisso
parents:
24489
diff
changeset
|
2054 |
&_is_alive_closure_cm); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2055 |
// is alive closure |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2056 |
// (for efficiency/performance) |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2057 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2058 |
// STW ref processor |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2059 |
_ref_processor_stw = |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2060 |
new ReferenceProcessor(mr, // span |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2061 |
ParallelRefProcEnabled && (ParallelGCThreads > 1), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2062 |
// mt processing |
31330
77061bb01b18
8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
david
parents:
31032
diff
changeset
|
2063 |
ParallelGCThreads, |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2064 |
// degree of mt processing |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2065 |
(ParallelGCThreads > 1), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2066 |
// mt discovery |
31330
77061bb01b18
8081382: Make flags ParallelGCThreads and ConcGCThreads of type uint
david
parents:
31032
diff
changeset
|
2067 |
ParallelGCThreads, |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2068 |
// degree of mt discovery |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2069 |
true, |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2070 |
// Reference discovery is atomic |
24845
e8b8894a77df
8043239: G1: Missing post barrier in processing of j.l.ref.Reference objects
brutisso
parents:
24489
diff
changeset
|
2071 |
&_is_alive_closure_stw); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2072 |
// is alive closure |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2073 |
// (for efficiency/performance) |
1374 | 2074 |
} |
2075 |
||
32735
c6063d028c3c
8134797: Remove explicit casts in CollectorPolicy hierarchy
kbarrett
parents:
32617
diff
changeset
|
2076 |
CollectorPolicy* G1CollectedHeap::collector_policy() const { |
37985
539c597ee0fa
8154154: Separate G1 specific policy code from the CollectorPolicy class hierarchy
mgerdin
parents:
37494
diff
changeset
|
2077 |
return _collector_policy; |
32735
c6063d028c3c
8134797: Remove explicit casts in CollectorPolicy hierarchy
kbarrett
parents:
32617
diff
changeset
|
2078 |
} |
c6063d028c3c
8134797: Remove explicit casts in CollectorPolicy hierarchy
kbarrett
parents:
32617
diff
changeset
|
2079 |
|
1374 | 2080 |
size_t G1CollectedHeap::capacity() const { |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2081 |
return _hrm.length() * HeapRegion::GrainBytes; |
1374 | 2082 |
} |
2083 |
||
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2084 |
void G1CollectedHeap::reset_gc_time_stamps(HeapRegion* hr) { |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2085 |
hr->reset_gc_time_stamp(); |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2086 |
} |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2087 |
|
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2088 |
#ifndef PRODUCT |
30147
af9a41999c6e
8076314: Remove the static instance variable SharedHeap:: _sh
brutisso
parents:
29809
diff
changeset
|
2089 |
|
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2090 |
class CheckGCTimeStampsHRClosure : public HeapRegionClosure { |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2091 |
private: |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2092 |
unsigned _gc_time_stamp; |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2093 |
bool _failures; |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2094 |
|
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2095 |
public: |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2096 |
CheckGCTimeStampsHRClosure(unsigned gc_time_stamp) : |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2097 |
_gc_time_stamp(gc_time_stamp), _failures(false) { } |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2098 |
|
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2099 |
virtual bool doHeapRegion(HeapRegion* hr) { |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2100 |
unsigned region_gc_time_stamp = hr->get_gc_time_stamp(); |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2101 |
if (_gc_time_stamp != region_gc_time_stamp) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
36084
diff
changeset
|
2102 |
log_error(gc, verify)("Region " HR_FORMAT " has GC time stamp = %d, expected %d", HR_FORMAT_PARAMS(hr), |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
36084
diff
changeset
|
2103 |
region_gc_time_stamp, _gc_time_stamp); |
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2104 |
_failures = true; |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2105 |
} |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2106 |
return false; |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2107 |
} |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2108 |
|
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2109 |
bool failures() { return _failures; } |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2110 |
}; |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2111 |
|
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2112 |
void G1CollectedHeap::check_gc_time_stamps() { |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2113 |
CheckGCTimeStampsHRClosure cl(_gc_time_stamp); |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2114 |
heap_region_iterate(&cl); |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2115 |
guarantee(!cl.failures(), "all GC time stamps should have been reset"); |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2116 |
} |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2117 |
#endif // PRODUCT |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2118 |
|
33204
b8a3901ac5b3
8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
tschatzl
parents:
33203
diff
changeset
|
2119 |
void G1CollectedHeap::iterate_hcc_closure(CardTableEntryClosure* cl, uint worker_i) { |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
2120 |
_hot_card_cache->drain(cl, worker_i); |
33204
b8a3901ac5b3
8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
tschatzl
parents:
33203
diff
changeset
|
2121 |
} |
b8a3901ac5b3
8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
tschatzl
parents:
33203
diff
changeset
|
2122 |
|
b8a3901ac5b3
8069330: Adjustment of concurrent refinement thresholds does not take hot card cache into account
tschatzl
parents:
33203
diff
changeset
|
2123 |
void G1CollectedHeap::iterate_dirty_card_closure(CardTableEntryClosure* cl, uint worker_i) { |
1374 | 2124 |
DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
2125 |
size_t n_completed_buffers = 0; |
6247 | 2126 |
while (dcqs.apply_closure_to_completed_buffer(cl, worker_i, 0, true)) { |
1374 | 2127 |
n_completed_buffers++; |
2128 |
} |
|
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
2129 |
g1_policy()->phase_times()->record_thread_work_item(G1GCPhaseTimes::UpdateRS, worker_i, n_completed_buffers); |
1374 | 2130 |
dcqs.clear_n_completed_buffers(); |
2131 |
assert(!dcqs.completed_buffers_exist_dirty(), "Completed buffers exist!"); |
|
2132 |
} |
|
2133 |
||
2134 |
// Computes the sum of the storage used by the various regions. |
|
2135 |
size_t G1CollectedHeap::used() const { |
|
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
2136 |
size_t result = _summary_bytes_used + _allocator->used_in_alloc_regions(); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2137 |
if (_archive_allocator != NULL) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2138 |
result += _archive_allocator->used(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2139 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2140 |
return result; |
1374 | 2141 |
} |
2142 |
||
3263
23d2d46c6d08
6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf")
tonyp
parents:
3262
diff
changeset
|
2143 |
size_t G1CollectedHeap::used_unlocked() const { |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
2144 |
return _summary_bytes_used; |
3263
23d2d46c6d08
6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf")
tonyp
parents:
3262
diff
changeset
|
2145 |
} |
23d2d46c6d08
6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf")
tonyp
parents:
3262
diff
changeset
|
2146 |
|
1374 | 2147 |
class SumUsedClosure: public HeapRegionClosure { |
2148 |
size_t _used; |
|
2149 |
public: |
|
2150 |
SumUsedClosure() : _used(0) {} |
|
2151 |
bool doHeapRegion(HeapRegion* r) { |
|
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
2152 |
_used += r->used(); |
1374 | 2153 |
return false; |
2154 |
} |
|
2155 |
size_t result() { return _used; } |
|
2156 |
}; |
|
2157 |
||
2158 |
size_t G1CollectedHeap::recalculate_used() const { |
|
23455
e541bff96524
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
23454
diff
changeset
|
2159 |
double recalculate_used_start = os::elapsedTime(); |
e541bff96524
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
23454
diff
changeset
|
2160 |
|
1374 | 2161 |
SumUsedClosure blk; |
9989 | 2162 |
heap_region_iterate(&blk); |
23455
e541bff96524
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
23454
diff
changeset
|
2163 |
|
e541bff96524
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
23454
diff
changeset
|
2164 |
g1_policy()->phase_times()->record_evac_fail_recalc_used_time((os::elapsedTime() - recalculate_used_start) * 1000.0); |
1374 | 2165 |
return blk.result(); |
2166 |
} |
|
2167 |
||
34619
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2168 |
bool G1CollectedHeap::is_user_requested_concurrent_full_gc(GCCause::Cause cause) { |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2169 |
switch (cause) { |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2170 |
case GCCause::_java_lang_system_gc: return ExplicitGCInvokesConcurrent; |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2171 |
case GCCause::_dcmd_gc_run: return ExplicitGCInvokesConcurrent; |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2172 |
case GCCause::_update_allocation_context_stats_inc: return true; |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2173 |
case GCCause::_wb_conc_mark: return true; |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2174 |
default : return false; |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2175 |
} |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2176 |
} |
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2177 |
|
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2178 |
bool G1CollectedHeap::should_do_concurrent_full_gc(GCCause::Cause cause) { |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2179 |
switch (cause) { |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2180 |
case GCCause::_gc_locker: return GCLockerInvokesConcurrent; |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2181 |
case GCCause::_g1_humongous_allocation: return true; |
34619
83b1fedf01e9
8143251: HeapRetentionTest.java Test is failing on jdk9/dev
sjohanss
parents:
34613
diff
changeset
|
2182 |
default: return is_user_requested_concurrent_full_gc(cause); |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2183 |
} |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2184 |
} |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2185 |
|
9334
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2186 |
#ifndef PRODUCT |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2187 |
void G1CollectedHeap::allocate_dummy_regions() { |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2188 |
// Let's fill up most of the region |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2189 |
size_t word_size = HeapRegion::GrainWords - 1024; |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2190 |
// And as a result the region we'll allocate will be humongous. |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
2191 |
guarantee(is_humongous(word_size), "sanity"); |
9334
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2192 |
|
34136
7e08409e5935
8134631: G1DummyRegionsPerGC fires assert of assert(words <= filler_array_max_size()) failed: too big for a single object
sangheki
parents:
33803
diff
changeset
|
2193 |
// _filler_array_max_size is set to humongous object threshold |
7e08409e5935
8134631: G1DummyRegionsPerGC fires assert of assert(words <= filler_array_max_size()) failed: too big for a single object
sangheki
parents:
33803
diff
changeset
|
2194 |
// but temporarily change it to use CollectedHeap::fill_with_object(). |
7e08409e5935
8134631: G1DummyRegionsPerGC fires assert of assert(words <= filler_array_max_size()) failed: too big for a single object
sangheki
parents:
33803
diff
changeset
|
2195 |
SizeTFlagSetting fs(_filler_array_max_size, word_size); |
7e08409e5935
8134631: G1DummyRegionsPerGC fires assert of assert(words <= filler_array_max_size()) failed: too big for a single object
sangheki
parents:
33803
diff
changeset
|
2196 |
|
9334
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2197 |
for (uintx i = 0; i < G1DummyRegionsPerGC; ++i) { |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2198 |
// Let's use the existing mechanism for the allocation |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
2199 |
HeapWord* dummy_obj = humongous_obj_allocate(word_size, |
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
2200 |
AllocationContext::system()); |
9334
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2201 |
if (dummy_obj != NULL) { |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2202 |
MemRegion mr(dummy_obj, word_size); |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2203 |
CollectedHeap::fill_with_object(mr); |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2204 |
} else { |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2205 |
// If we can't allocate once, we probably cannot allocate |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2206 |
// again. Let's get out of the loop. |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2207 |
break; |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2208 |
} |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2209 |
} |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2210 |
} |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2211 |
#endif // !PRODUCT |
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
2212 |
|
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2213 |
void G1CollectedHeap::increment_old_marking_cycles_started() { |
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2214 |
assert(_old_marking_cycles_started == _old_marking_cycles_completed || |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2215 |
_old_marking_cycles_started == _old_marking_cycles_completed + 1, |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2216 |
"Wrong marking cycle count (started: %d, completed: %d)", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2217 |
_old_marking_cycles_started, _old_marking_cycles_completed); |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2218 |
|
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2219 |
_old_marking_cycles_started++; |
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2220 |
} |
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2221 |
|
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2222 |
void G1CollectedHeap::increment_old_marking_cycles_completed(bool concurrent) { |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2223 |
MonitorLockerEx x(FullGCCount_lock, Mutex::_no_safepoint_check_flag); |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2224 |
|
7455
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2225 |
// We assume that if concurrent == true, then the caller is a |
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2226 |
// concurrent thread that was joined the Suspendible Thread |
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2227 |
// Set. If there's ever a cheap way to check this, we should add an |
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2228 |
// assert here. |
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2229 |
|
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2230 |
// Given that this method is called at the end of a Full GC or of a |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2231 |
// concurrent cycle, and those can be nested (i.e., a Full GC can |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2232 |
// interrupt a concurrent cycle), the number of full collections |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2233 |
// completed should be either one (in the case where there was no |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2234 |
// nesting) or two (when a Full GC interrupted a concurrent cycle) |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2235 |
// behind the number of full collections started. |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2236 |
|
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2237 |
// This is the case for the inner caller, i.e. a Full GC. |
7455
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2238 |
assert(concurrent || |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2239 |
(_old_marking_cycles_started == _old_marking_cycles_completed + 1) || |
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2240 |
(_old_marking_cycles_started == _old_marking_cycles_completed + 2), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2241 |
"for inner caller (Full GC): _old_marking_cycles_started = %u " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2242 |
"is inconsistent with _old_marking_cycles_completed = %u", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2243 |
_old_marking_cycles_started, _old_marking_cycles_completed); |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2244 |
|
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2245 |
// This is the case for the outer caller, i.e. the concurrent cycle. |
7455
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2246 |
assert(!concurrent || |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2247 |
(_old_marking_cycles_started == _old_marking_cycles_completed + 1), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2248 |
"for outer caller (concurrent cycle): " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2249 |
"_old_marking_cycles_started = %u " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2250 |
"is inconsistent with _old_marking_cycles_completed = %u", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
2251 |
_old_marking_cycles_started, _old_marking_cycles_completed); |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2252 |
|
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2253 |
_old_marking_cycles_completed += 1; |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2254 |
|
6766
839211600ad0
6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent
johnc
parents:
6759
diff
changeset
|
2255 |
// We need to clear the "in_progress" flag in the CM thread before |
839211600ad0
6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent
johnc
parents:
6759
diff
changeset
|
2256 |
// we wake up any waiters (especially when ExplicitInvokesConcurrent |
839211600ad0
6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent
johnc
parents:
6759
diff
changeset
|
2257 |
// is set) so that if a waiter requests another System.gc() it doesn't |
18025 | 2258 |
// incorrectly see that a marking cycle is still in progress. |
7455
22e19e8c0beb
7000559: G1: assertion failure !outer || (full_collections_started == _full_collections_completed + 1)
tonyp
parents:
7420
diff
changeset
|
2259 |
if (concurrent) { |
31597
f63dde8cc8f7
8129626: G1: set_in_progress() and clear_started() needs a barrier on non-TSO platforms
brutisso
parents:
31397
diff
changeset
|
2260 |
_cmThread->set_idle(); |
6766
839211600ad0
6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent
johnc
parents:
6759
diff
changeset
|
2261 |
} |
839211600ad0
6983311: G1: LoopTest hangs when run with -XX:+ExplicitInvokesConcurrent
johnc
parents:
6759
diff
changeset
|
2262 |
|
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2263 |
// This notify_all() will ensure that a thread that called |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2264 |
// System.gc() with (with ExplicitGCInvokesConcurrent set or not) |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2265 |
// and it's waiting for a full GC to finish will be woken up. It is |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2266 |
// waiting in VM_G1IncCollectionPause::doit_epilogue(). |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2267 |
FullGCCount_lock->notify_all(); |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2268 |
} |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2269 |
|
4458
075a9ef4e467
6902303: G1: ScavengeALot should cause an incremental, rather than a full, collection
ysr
parents:
4100
diff
changeset
|
2270 |
void G1CollectedHeap::collect(GCCause::Cause cause) { |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2271 |
assert_heap_not_locked(); |
4458
075a9ef4e467
6902303: G1: ScavengeALot should cause an incremental, rather than a full, collection
ysr
parents:
4100
diff
changeset
|
2272 |
|
29078 | 2273 |
uint gc_count_before; |
2274 |
uint old_marking_count_before; |
|
2275 |
uint full_gc_count_before; |
|
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2276 |
bool retry_gc; |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2277 |
|
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2278 |
do { |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2279 |
retry_gc = false; |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2280 |
|
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2281 |
{ |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2282 |
MutexLocker ml(Heap_lock); |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2283 |
|
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2284 |
// Read the GC count while holding the Heap_lock |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2285 |
gc_count_before = total_collections(); |
27250
cc55c7b61f08
8058568: GC cleanup phase can cause G1 skipping a System.gc()
sjohanss
parents:
27247
diff
changeset
|
2286 |
full_gc_count_before = total_full_collections(); |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2287 |
old_marking_count_before = _old_marking_cycles_started; |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2288 |
} |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2289 |
|
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2290 |
if (should_do_concurrent_full_gc(cause)) { |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2291 |
// Schedule an initial-mark evacuation pause that will start a |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2292 |
// concurrent cycle. We're setting word_size to 0 which means that |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2293 |
// we are not requesting a post-GC allocation. |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2294 |
VM_G1IncCollectionPause op(gc_count_before, |
7398 | 2295 |
0, /* word_size */ |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2296 |
true, /* should_initiate_conc_mark */ |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2297 |
g1_policy()->max_pause_time_ms(), |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2298 |
cause); |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
2299 |
op.set_allocation_context(AllocationContext::current()); |
12227
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
2300 |
|
4458
075a9ef4e467
6902303: G1: ScavengeALot should cause an incremental, rather than a full, collection
ysr
parents:
4100
diff
changeset
|
2301 |
VMThread::execute(&op); |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2302 |
if (!op.pause_succeeded()) { |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
2303 |
if (old_marking_count_before == _old_marking_cycles_started) { |
12227
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
2304 |
retry_gc = op.should_retry_gc(); |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2305 |
} else { |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2306 |
// A Full GC happened while we were trying to schedule the |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2307 |
// initial-mark GC. No point in starting a new cycle given |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2308 |
// that the whole heap was collected anyway. |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2309 |
} |
12227
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
2310 |
|
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
2311 |
if (retry_gc) { |
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
2312 |
if (GCLocker::is_active_and_needs_gc()) { |
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
2313 |
GCLocker::stall_until_clear(); |
12227
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
2314 |
} |
371690c4f281
7147724: G1: hang in SurrogateLockerThread::manipulatePLL
johnc
parents:
11756
diff
changeset
|
2315 |
} |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2316 |
} |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
2317 |
} else { |
26183
bbe259d3c8bc
8055098: WB API should be extended to provide information about size and age of object.
tschatzl
parents:
26160
diff
changeset
|
2318 |
if (cause == GCCause::_gc_locker || cause == GCCause::_wb_young_gc |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2319 |
DEBUG_ONLY(|| cause == GCCause::_scavenge_alot)) { |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2320 |
|
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2321 |
// Schedule a standard evacuation pause. We're setting word_size |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2322 |
// to 0 which means that we are not requesting a post-GC allocation. |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2323 |
VM_G1IncCollectionPause op(gc_count_before, |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2324 |
0, /* word_size */ |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2325 |
false, /* should_initiate_conc_mark */ |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2326 |
g1_policy()->max_pause_time_ms(), |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2327 |
cause); |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2328 |
VMThread::execute(&op); |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2329 |
} else { |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2330 |
// Schedule a Full GC. |
27250
cc55c7b61f08
8058568: GC cleanup phase can cause G1 skipping a System.gc()
sjohanss
parents:
27247
diff
changeset
|
2331 |
VM_G1CollectFull op(gc_count_before, full_gc_count_before, cause); |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2332 |
VMThread::execute(&op); |
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2333 |
} |
4458
075a9ef4e467
6902303: G1: ScavengeALot should cause an incremental, rather than a full, collection
ysr
parents:
4100
diff
changeset
|
2334 |
} |
11754
b003db88c6d6
7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle
tonyp
parents:
11639
diff
changeset
|
2335 |
} while (retry_gc); |
1374 | 2336 |
} |
2337 |
||
2338 |
bool G1CollectedHeap::is_in(const void* p) const { |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2339 |
if (_hrm.reserved().contains(p)) { |
26160 | 2340 |
// Given that we know that p is in the reserved space, |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
2341 |
// heap_region_containing() should successfully |
11247 | 2342 |
// return the containing region. |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
2343 |
HeapRegion* hr = heap_region_containing(p); |
1374 | 2344 |
return hr->is_in(p); |
2345 |
} else { |
|
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13517
diff
changeset
|
2346 |
return false; |
1374 | 2347 |
} |
2348 |
} |
|
2349 |
||
26160 | 2350 |
#ifdef ASSERT |
2351 |
bool G1CollectedHeap::is_in_exact(const void* p) const { |
|
2352 |
bool contains = reserved_region().contains(p); |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2353 |
bool available = _hrm.is_available(addr_to_region((HeapWord*)p)); |
26160 | 2354 |
if (contains && available) { |
2355 |
return true; |
|
2356 |
} else { |
|
2357 |
return false; |
|
2358 |
} |
|
2359 |
} |
|
2360 |
#endif |
|
2361 |
||
1374 | 2362 |
// Iteration functions. |
2363 |
||
2364 |
// Iterates an ObjectClosure over all objects within a HeapRegion. |
|
2365 |
||
2366 |
class IterateObjectClosureRegionClosure: public HeapRegionClosure { |
|
2367 |
ObjectClosure* _cl; |
|
2368 |
public: |
|
2369 |
IterateObjectClosureRegionClosure(ObjectClosure* cl) : _cl(cl) {} |
|
2370 |
bool doHeapRegion(HeapRegion* r) { |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
2371 |
if (!r->is_continues_humongous()) { |
1374 | 2372 |
r->object_iterate(_cl); |
2373 |
} |
|
2374 |
return false; |
|
2375 |
} |
|
2376 |
}; |
|
2377 |
||
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13517
diff
changeset
|
2378 |
void G1CollectedHeap::object_iterate(ObjectClosure* cl) { |
1374 | 2379 |
IterateObjectClosureRegionClosure blk(cl); |
9989 | 2380 |
heap_region_iterate(&blk); |
1374 | 2381 |
} |
2382 |
||
9989 | 2383 |
void G1CollectedHeap::heap_region_iterate(HeapRegionClosure* cl) const { |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2384 |
_hrm.iterate(cl); |
1374 | 2385 |
} |
2386 |
||
46573
0f8fae16c5b4
8183002: Remove unused concurrent parameter in HeapRegionManager::par_iterate
tschatzl
parents:
46572
diff
changeset
|
2387 |
void G1CollectedHeap::heap_region_par_iterate(HeapRegionClosure* cl, |
0f8fae16c5b4
8183002: Remove unused concurrent parameter in HeapRegionManager::par_iterate
tschatzl
parents:
46572
diff
changeset
|
2388 |
uint worker_id, |
0f8fae16c5b4
8183002: Remove unused concurrent parameter in HeapRegionManager::par_iterate
tschatzl
parents:
46572
diff
changeset
|
2389 |
HeapRegionClaimer *hrclaimer) const { |
0f8fae16c5b4
8183002: Remove unused concurrent parameter in HeapRegionManager::par_iterate
tschatzl
parents:
46572
diff
changeset
|
2390 |
_hrm.par_iterate(cl, worker_id, hrclaimer); |
27009
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
2391 |
} |
1374 | 2392 |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2393 |
void G1CollectedHeap::collection_set_iterate(HeapRegionClosure* cl) { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2394 |
_collection_set.iterate(cl); |
11248
5ff61b0fdf3d
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
11247
diff
changeset
|
2395 |
} |
5ff61b0fdf3d
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
11247
diff
changeset
|
2396 |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2397 |
void G1CollectedHeap::collection_set_iterate_from(HeapRegionClosure *cl, uint worker_id) { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2398 |
_collection_set.iterate_from(cl, worker_id, workers()->active_workers()); |
1374 | 2399 |
} |
2400 |
||
25730
7eb4e685f739
8048112: G1 Full GC needs to support the case when the very first region is not available
tschatzl
parents:
25500
diff
changeset
|
2401 |
HeapRegion* G1CollectedHeap::next_compaction_region(const HeapRegion* from) const { |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2402 |
HeapRegion* result = _hrm.next_region_in_heap(from); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2403 |
while (result != NULL && result->is_pinned()) { |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2404 |
result = _hrm.next_region_in_heap(result); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
2405 |
} |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
2406 |
return result; |
25730
7eb4e685f739
8048112: G1 Full GC needs to support the case when the very first region is not available
tschatzl
parents:
25500
diff
changeset
|
2407 |
} |
1374 | 2408 |
|
2409 |
HeapWord* G1CollectedHeap::block_start(const void* addr) const { |
|
30152 | 2410 |
HeapRegion* hr = heap_region_containing(addr); |
2411 |
return hr->block_start(addr); |
|
1374 | 2412 |
} |
2413 |
||
2414 |
size_t G1CollectedHeap::block_size(const HeapWord* addr) const { |
|
30152 | 2415 |
HeapRegion* hr = heap_region_containing(addr); |
2416 |
return hr->block_size(addr); |
|
1374 | 2417 |
} |
2418 |
||
2419 |
bool G1CollectedHeap::block_is_obj(const HeapWord* addr) const { |
|
30152 | 2420 |
HeapRegion* hr = heap_region_containing(addr); |
2421 |
return hr->block_is_obj(addr); |
|
1374 | 2422 |
} |
2423 |
||
2424 |
bool G1CollectedHeap::supports_tlab_allocation() const { |
|
2425 |
return true; |
|
2426 |
} |
|
2427 |
||
2428 |
size_t G1CollectedHeap::tlab_capacity(Thread* ignored) const { |
|
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2429 |
return (_g1_policy->young_list_target_length() - _survivor.length()) * HeapRegion::GrainBytes; |
22552 | 2430 |
} |
2431 |
||
2432 |
size_t G1CollectedHeap::tlab_used(Thread* ignored) const { |
|
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2433 |
return _eden.length() * HeapRegion::GrainBytes; |
22552 | 2434 |
} |
2435 |
||
2436 |
// For G1 TLABs should not contain humongous objects, so the maximum TLAB size |
|
32616
888b4f477ec9
8134857: Inconsistency in maximum TLAB/PLAB size and humongous object size
tschatzl
parents:
32592
diff
changeset
|
2437 |
// must be equal to the humongous object limit. |
22552 | 2438 |
size_t G1CollectedHeap::max_tlab_size() const { |
46619
a3919f5e8d2b
8178499: Remove _ptr_ and _size_ infixes from align functions
stefank
parents:
46609
diff
changeset
|
2439 |
return align_down(_humongous_object_threshold_in_words, MinObjAlignment); |
1374 | 2440 |
} |
2441 |
||
2442 |
size_t G1CollectedHeap::unsafe_max_tlab_alloc(Thread* ignored) const { |
|
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
2443 |
AllocationContext_t context = AllocationContext::current(); |
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
31988
diff
changeset
|
2444 |
return _allocator->unsafe_max_tlab_alloc(context); |
1374 | 2445 |
} |
2446 |
||
2447 |
size_t G1CollectedHeap::max_capacity() const { |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
2448 |
return _hrm.reserved().byte_size(); |
1374 | 2449 |
} |
2450 |
||
2451 |
jlong G1CollectedHeap::millis_since_last_gc() { |
|
41284
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2452 |
// See the notes in GenCollectedHeap::millis_since_last_gc() |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2453 |
// for more information about the implementation. |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2454 |
jlong ret_val = (os::javaTimeNanos() / NANOSECS_PER_MILLISEC) - |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2455 |
_g1_policy->collection_pause_end_millis(); |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2456 |
if (ret_val < 0) { |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2457 |
log_warning(gc)("millis_since_last_gc() would return : " JLONG_FORMAT |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2458 |
". returning zero instead.", ret_val); |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2459 |
return 0; |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2460 |
} |
b4276ec89d0d
8164482: [REDO] G1 does not implement millis_since_last_gc which is needed by RMI GC
jprovino
parents:
41178
diff
changeset
|
2461 |
return ret_val; |
1374 | 2462 |
} |
2463 |
||
2464 |
void G1CollectedHeap::prepare_for_verify() { |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
2465 |
_verifier->prepare_for_verify(); |
13336
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2466 |
} |
e582172ff6ff
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
13289
diff
changeset
|
2467 |
|
35061 | 2468 |
void G1CollectedHeap::verify(VerifyOption vo) { |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
2469 |
_verifier->verify(vo); |
19339 | 2470 |
} |
2471 |
||
46384
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2472 |
bool G1CollectedHeap::supports_concurrent_phase_control() const { |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2473 |
return true; |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2474 |
} |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2475 |
|
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2476 |
const char* const* G1CollectedHeap::concurrent_phases() const { |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2477 |
return _cmThread->concurrent_phases(); |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2478 |
} |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2479 |
|
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2480 |
bool G1CollectedHeap::request_concurrent_phase(const char* phase) { |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2481 |
return _cmThread->request_concurrent_phase(phase); |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2482 |
} |
dacebddcdea0
8169517: WhiteBox should provide concurrent GC phase control
kbarrett
parents:
46353
diff
changeset
|
2483 |
|
1374 | 2484 |
class PrintRegionClosure: public HeapRegionClosure { |
2485 |
outputStream* _st; |
|
2486 |
public: |
|
2487 |
PrintRegionClosure(outputStream* st) : _st(st) {} |
|
2488 |
bool doHeapRegion(HeapRegion* r) { |
|
2489 |
r->print_on(_st); |
|
2490 |
return false; |
|
2491 |
} |
|
2492 |
}; |
|
2493 |
||
23543 | 2494 |
bool G1CollectedHeap::is_obj_dead_cond(const oop obj, |
2495 |
const HeapRegion* hr, |
|
2496 |
const VerifyOption vo) const { |
|
2497 |
switch (vo) { |
|
2498 |
case VerifyOption_G1UsePrevMarking: return is_obj_dead(obj, hr); |
|
2499 |
case VerifyOption_G1UseNextMarking: return is_obj_ill(obj, hr); |
|
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2500 |
case VerifyOption_G1UseMarkWord: return !obj->is_gc_marked() && !hr->is_archive(); |
23543 | 2501 |
default: ShouldNotReachHere(); |
2502 |
} |
|
2503 |
return false; // keep some compilers happy |
|
2504 |
} |
|
2505 |
||
2506 |
bool G1CollectedHeap::is_obj_dead_cond(const oop obj, |
|
2507 |
const VerifyOption vo) const { |
|
2508 |
switch (vo) { |
|
2509 |
case VerifyOption_G1UsePrevMarking: return is_obj_dead(obj); |
|
2510 |
case VerifyOption_G1UseNextMarking: return is_obj_ill(obj); |
|
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2511 |
case VerifyOption_G1UseMarkWord: { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2512 |
HeapRegion* hr = _hrm.addr_to_region((HeapWord*)obj); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2513 |
return !obj->is_gc_marked() && !hr->is_archive(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2514 |
} |
23543 | 2515 |
default: ShouldNotReachHere(); |
2516 |
} |
|
2517 |
return false; // keep some compilers happy |
|
2518 |
} |
|
2519 |
||
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2520 |
void G1CollectedHeap::print_heap_regions() const { |
37242 | 2521 |
Log(gc, heap, region) log; |
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2522 |
if (log.is_trace()) { |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2523 |
ResourceMark rm; |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2524 |
print_regions_on(log.trace_stream()); |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2525 |
} |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2526 |
} |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2527 |
|
1374 | 2528 |
void G1CollectedHeap::print_on(outputStream* st) const { |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
2529 |
st->print(" %-20s", "garbage-first heap"); |
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
2530 |
st->print(" total " SIZE_FORMAT "K, used " SIZE_FORMAT "K", |
3263
23d2d46c6d08
6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf")
tonyp
parents:
3262
diff
changeset
|
2531 |
capacity()/K, used_unlocked()/K); |
30272
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
2532 |
st->print(" [" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT ")", |
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
2533 |
p2i(_hrm.reserved().start()), |
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
2534 |
p2i(_hrm.reserved().start() + _hrm.length() + HeapRegion::GrainWords), |
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
2535 |
p2i(_hrm.reserved().end())); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
2536 |
st->cr(); |
10677
370a8da2d63f
7095194: G1: HeapRegion::GrainBytes, GrainWords, and CardsPerRegion should be size_t
johnc
parents:
10674
diff
changeset
|
2537 |
st->print(" region size " SIZE_FORMAT "K, ", HeapRegion::GrainBytes / K); |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2538 |
uint young_regions = young_regions_count(); |
12381
1438e0fbfa27
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
12379
diff
changeset
|
2539 |
st->print("%u young (" SIZE_FORMAT "K), ", young_regions, |
1438e0fbfa27
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
12379
diff
changeset
|
2540 |
(size_t) young_regions * HeapRegion::GrainBytes / K); |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2541 |
uint survivor_regions = survivor_regions_count(); |
12381
1438e0fbfa27
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
12379
diff
changeset
|
2542 |
st->print("%u survivors (" SIZE_FORMAT "K)", survivor_regions, |
1438e0fbfa27
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
12379
diff
changeset
|
2543 |
(size_t) survivor_regions * HeapRegion::GrainBytes / K); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
2544 |
st->cr(); |
14074
8cafb11da0cd
8000358: G1: metaspace information not printed in PrintHeapAtGC output nor in hs_err file
johnc
parents:
13926
diff
changeset
|
2545 |
MetaspaceAux::print_on(st); |
10997
0be4b3be7197
7099849: G1: include heap region information in hs_err files
tonyp
parents:
10996
diff
changeset
|
2546 |
} |
0be4b3be7197
7099849: G1: include heap region information in hs_err files
tonyp
parents:
10996
diff
changeset
|
2547 |
|
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2548 |
void G1CollectedHeap::print_regions_on(outputStream* st) const { |
34671
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34666
diff
changeset
|
2549 |
st->print_cr("Heap Regions: E=young(eden), S=young(survivor), O=old, " |
12381
1438e0fbfa27
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
12379
diff
changeset
|
2550 |
"HS=humongous(starts), HC=humongous(continues), " |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
2551 |
"CS=collection set, F=free, A=archive, TS=gc time stamp, " |
34671
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34666
diff
changeset
|
2552 |
"AC=allocation context, " |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34666
diff
changeset
|
2553 |
"TAMS=top-at-mark-start (previous, next)"); |
1374 | 2554 |
PrintRegionClosure blk(st); |
9989 | 2555 |
heap_region_iterate(&blk); |
1374 | 2556 |
} |
2557 |
||
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2558 |
void G1CollectedHeap::print_extended_on(outputStream* st) const { |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2559 |
print_on(st); |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2560 |
|
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2561 |
// Print the per-region information. |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2562 |
print_regions_on(st); |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2563 |
} |
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
2564 |
|
16685
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2565 |
void G1CollectedHeap::print_on_error(outputStream* st) const { |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2566 |
this->CollectedHeap::print_on_error(st); |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2567 |
|
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2568 |
if (_cm != NULL) { |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2569 |
st->cr(); |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2570 |
_cm->print_on_error(st); |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2571 |
} |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2572 |
} |
41c34debcde0
8011872: Include Bit Map addresses in the hs_err files
stefank
parents:
16606
diff
changeset
|
2573 |
|
1374 | 2574 |
void G1CollectedHeap::print_gc_threads_on(outputStream* st) const { |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
2575 |
workers()->print_worker_threads_on(st); |
4022 | 2576 |
_cmThread->print_on(st); |
1374 | 2577 |
st->cr(); |
4022 | 2578 |
_cm->print_worker_threads_on(st); |
37474 | 2579 |
_cg1r->print_worker_threads_on(st); // also prints the sample thread |
23472 | 2580 |
if (G1StringDedup::is_enabled()) { |
2581 |
G1StringDedup::print_worker_threads_on(st); |
|
2582 |
} |
|
1374 | 2583 |
} |
2584 |
||
2585 |
void G1CollectedHeap::gc_threads_do(ThreadClosure* tc) const { |
|
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
2586 |
workers()->threads_do(tc); |
1374 | 2587 |
tc->do_thread(_cmThread); |
37474 | 2588 |
_cm->threads_do(tc); |
2589 |
_cg1r->threads_do(tc); // also iterates over the sample thread |
|
23472 | 2590 |
if (G1StringDedup::is_enabled()) { |
2591 |
G1StringDedup::threads_do(tc); |
|
2592 |
} |
|
1374 | 2593 |
} |
2594 |
||
2595 |
void G1CollectedHeap::print_tracing_info() const { |
|
35061 | 2596 |
g1_rem_set()->print_summary_info(); |
2597 |
concurrent_mark()->print_summary_info(); |
|
1374 | 2598 |
} |
2599 |
||
10000
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2600 |
#ifndef PRODUCT |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2601 |
// Helpful for debugging RSet issues. |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2602 |
|
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2603 |
class PrintRSetsClosure : public HeapRegionClosure { |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2604 |
private: |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2605 |
const char* _msg; |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2606 |
size_t _occupied_sum; |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2607 |
|
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2608 |
public: |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2609 |
bool doHeapRegion(HeapRegion* r) { |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2610 |
HeapRegionRemSet* hrrs = r->rem_set(); |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2611 |
size_t occupied = hrrs->occupied(); |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2612 |
_occupied_sum += occupied; |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2613 |
|
35061 | 2614 |
tty->print_cr("Printing RSet for region " HR_FORMAT, HR_FORMAT_PARAMS(r)); |
10000
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2615 |
if (occupied == 0) { |
35061 | 2616 |
tty->print_cr(" RSet is empty"); |
10000
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2617 |
} else { |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2618 |
hrrs->print(); |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2619 |
} |
35061 | 2620 |
tty->print_cr("----------"); |
10000
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2621 |
return false; |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2622 |
} |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2623 |
|
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2624 |
PrintRSetsClosure(const char* msg) : _msg(msg), _occupied_sum(0) { |
35061 | 2625 |
tty->cr(); |
2626 |
tty->print_cr("========================================"); |
|
2627 |
tty->print_cr("%s", msg); |
|
2628 |
tty->cr(); |
|
10000
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2629 |
} |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2630 |
|
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2631 |
~PrintRSetsClosure() { |
35061 | 2632 |
tty->print_cr("Occupied Sum: " SIZE_FORMAT, _occupied_sum); |
2633 |
tty->print_cr("========================================"); |
|
2634 |
tty->cr(); |
|
10000
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2635 |
} |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2636 |
}; |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2637 |
|
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2638 |
void G1CollectedHeap::print_cset_rsets() { |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2639 |
PrintRSetsClosure cl("Printing CSet RSets"); |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2640 |
collection_set_iterate(&cl); |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2641 |
} |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2642 |
|
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2643 |
void G1CollectedHeap::print_all_rsets() { |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2644 |
PrintRSetsClosure cl("Printing All RSets");; |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2645 |
heap_region_iterate(&cl); |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2646 |
} |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2647 |
#endif // PRODUCT |
5bbb58b0dbb9
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
9997
diff
changeset
|
2648 |
|
31344
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2649 |
G1HeapSummary G1CollectedHeap::create_g1_heap_summary() { |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2650 |
|
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2651 |
size_t eden_used_bytes = heap()->eden_regions_count() * HeapRegion::GrainBytes; |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
2652 |
size_t survivor_used_bytes = heap()->survivor_regions_count() * HeapRegion::GrainBytes; |
37137
62fd3fb4b1b1
8151085: Change G1 concurrent timer and tracer measuring time
sangheki
parents:
37125
diff
changeset
|
2653 |
size_t heap_used = Heap_lock->owned_by_self() ? used() : used_unlocked(); |
31344
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2654 |
|
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2655 |
size_t eden_capacity_bytes = |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2656 |
(g1_policy()->young_list_target_length() * HeapRegion::GrainBytes) - survivor_used_bytes; |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2657 |
|
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2658 |
VirtualSpaceSummary heap_summary = create_heap_space_summary(); |
37137
62fd3fb4b1b1
8151085: Change G1 concurrent timer and tracer measuring time
sangheki
parents:
37125
diff
changeset
|
2659 |
return G1HeapSummary(heap_summary, heap_used, eden_used_bytes, |
62fd3fb4b1b1
8151085: Change G1 concurrent timer and tracer measuring time
sangheki
parents:
37125
diff
changeset
|
2660 |
eden_capacity_bytes, survivor_used_bytes, num_regions()); |
31344
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2661 |
} |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2662 |
|
32380
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2663 |
G1EvacSummary G1CollectedHeap::create_g1_evac_summary(G1EvacStats* stats) { |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2664 |
return G1EvacSummary(stats->allocated(), stats->wasted(), stats->undo_wasted(), |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2665 |
stats->unused(), stats->used(), stats->region_end_waste(), |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2666 |
stats->regions_filled(), stats->direct_allocated(), |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2667 |
stats->failure_used(), stats->failure_waste()); |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2668 |
} |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
2669 |
|
31344
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2670 |
void G1CollectedHeap::trace_heap(GCWhen::Type when, const GCTracer* gc_tracer) { |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2671 |
const G1HeapSummary& heap_summary = create_g1_heap_summary(); |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2672 |
gc_tracer->report_gc_heap_summary(when, heap_summary); |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2673 |
|
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2674 |
const MetaspaceSummary& metaspace_summary = create_metaspace_summary(); |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2675 |
gc_tracer->report_metaspace_summary(when, metaspace_summary); |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2676 |
} |
2316eb7a0358
8025608: GC trace events missing nursery size information
david
parents:
31331
diff
changeset
|
2677 |
|
1374 | 2678 |
G1CollectedHeap* G1CollectedHeap::heap() { |
30258
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
2679 |
CollectedHeap* heap = Universe::heap(); |
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
2680 |
assert(heap != NULL, "Uninitialized access to G1CollectedHeap::heap()"); |
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
2681 |
assert(heap->kind() == CollectedHeap::G1CollectedHeap, "Not a G1CollectedHeap"); |
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
2682 |
return (G1CollectedHeap*)heap; |
1374 | 2683 |
} |
2684 |
||
2685 |
void G1CollectedHeap::gc_prologue(bool full /* Ignored */) { |
|
4886
a2f9a66475b3
6904516: More object array barrier fixes, following up on 6906727
ysr
parents:
4637
diff
changeset
|
2686 |
// always_do_update_barrier = false; |
1374 | 2687 |
assert(InlineCacheBuffer::is_empty(), "should have cleaned up ICBuffer"); |
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2688 |
|
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2689 |
double start = os::elapsedTime(); |
1374 | 2690 |
// Fill TLAB's and such |
22552 | 2691 |
accumulate_statistics_all_tlabs(); |
1374 | 2692 |
ensure_parsability(true); |
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2693 |
g1_policy()->phase_times()->record_prepare_tlab_time_ms((os::elapsedTime() - start) * 1000.0); |
20305
af013cf4a5e6
8014078: G1: improve remembered set summary information by providing per region type information
tschatzl
parents:
20083
diff
changeset
|
2694 |
|
35061 | 2695 |
g1_rem_set()->print_periodic_summary_info("Before GC RS summary", total_collections()); |
1374 | 2696 |
} |
2697 |
||
26841
d460d343d888
8057818: collect allocation context statistics at gc pauses
jcoomes
parents:
26837
diff
changeset
|
2698 |
void G1CollectedHeap::gc_epilogue(bool full) { |
35061 | 2699 |
// we are at the end of the GC. Total collections has already been increased. |
2700 |
g1_rem_set()->print_periodic_summary_info("After GC RS summary", total_collections() - 1); |
|
17854
d65bc1546091
8013895: G1: G1SummarizeRSetStats output on Linux needs improvemen
tschatzl
parents:
17625
diff
changeset
|
2701 |
|
1374 | 2702 |
// FIXME: what is this about? |
2703 |
// I'm ignoring the "fill_newgen()" call if "alloc_event_enabled" |
|
2704 |
// is set. |
|
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
2705 |
#if defined(COMPILER2) || INCLUDE_JVMCI |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
2706 |
assert(DerivedPointerTable::is_empty(), "derived pointer present"); |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
2707 |
#endif |
4886
a2f9a66475b3
6904516: More object array barrier fixes, following up on 6906727
ysr
parents:
4637
diff
changeset
|
2708 |
// always_do_update_barrier = true; |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2709 |
|
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2710 |
double start = os::elapsedTime(); |
22552 | 2711 |
resize_all_tlabs(); |
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2712 |
g1_policy()->phase_times()->record_resize_tlab_time_ms((os::elapsedTime() - start) * 1000.0); |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2713 |
|
26841
d460d343d888
8057818: collect allocation context statistics at gc pauses
jcoomes
parents:
26837
diff
changeset
|
2714 |
allocation_context_stats().update(full); |
22552 | 2715 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2716 |
// We have just completed a GC. Update the soft reference |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2717 |
// policy with the new heap occupancy |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
2718 |
Universe::update_heap_info_at_gc(); |
1374 | 2719 |
} |
2720 |
||
7398 | 2721 |
HeapWord* G1CollectedHeap::do_collection_pause(size_t word_size, |
29078 | 2722 |
uint gc_count_before, |
19549
60e5c7cafdca
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
19341
diff
changeset
|
2723 |
bool* succeeded, |
60e5c7cafdca
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
19341
diff
changeset
|
2724 |
GCCause::Cause gc_cause) { |
7398 | 2725 |
assert_heap_not_locked_and_not_at_safepoint(); |
2726 |
VM_G1IncCollectionPause op(gc_count_before, |
|
2727 |
word_size, |
|
2728 |
false, /* should_initiate_conc_mark */ |
|
2729 |
g1_policy()->max_pause_time_ms(), |
|
19549
60e5c7cafdca
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
19341
diff
changeset
|
2730 |
gc_cause); |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
2731 |
|
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
2732 |
op.set_allocation_context(AllocationContext::current()); |
7398 | 2733 |
VMThread::execute(&op); |
2734 |
||
2735 |
HeapWord* result = op.result(); |
|
2736 |
bool ret_succeeded = op.prologue_succeeded() && op.pause_succeeded(); |
|
2737 |
assert(result == NULL || ret_succeeded, |
|
2738 |
"the result should be NULL if the VM did not succeed"); |
|
2739 |
*succeeded = ret_succeeded; |
|
2740 |
||
2741 |
assert_heap_not_locked(); |
|
2742 |
return result; |
|
1374 | 2743 |
} |
2744 |
||
2745 |
void |
|
2746 |
G1CollectedHeap::doConcurrentMark() { |
|
3262
30d1c247fc25
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
3191
diff
changeset
|
2747 |
MutexLockerEx x(CGC_lock, Mutex::_no_safepoint_check_flag); |
30d1c247fc25
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
3191
diff
changeset
|
2748 |
if (!_cmThread->in_progress()) { |
30d1c247fc25
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
3191
diff
changeset
|
2749 |
_cmThread->set_started(); |
30d1c247fc25
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
3191
diff
changeset
|
2750 |
CGC_lock->notify(); |
1374 | 2751 |
} |
2752 |
} |
|
2753 |
||
2754 |
size_t G1CollectedHeap::pending_card_num() { |
|
2755 |
size_t extra_cards = 0; |
|
2756 |
JavaThread *curr = Threads::first(); |
|
2757 |
while (curr != NULL) { |
|
2758 |
DirtyCardQueue& dcq = curr->dirty_card_queue(); |
|
2759 |
extra_cards += dcq.size(); |
|
2760 |
curr = curr->next(); |
|
2761 |
} |
|
2762 |
DirtyCardQueueSet& dcqs = JavaThread::dirty_card_queue_set(); |
|
2763 |
size_t buffer_size = dcqs.buffer_size(); |
|
2764 |
size_t buffer_num = dcqs.completed_buffers_num(); |
|
13482 | 2765 |
|
46443 | 2766 |
return buffer_size * buffer_num + extra_cards; |
1374 | 2767 |
} |
2768 |
||
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2769 |
class RegisterHumongousWithInCSetFastTestClosure : public HeapRegionClosure { |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2770 |
private: |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2771 |
size_t _total_humongous; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2772 |
size_t _candidate_humongous; |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2773 |
|
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2774 |
DirtyCardQueue _dcq; |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2775 |
|
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2776 |
// We don't nominate objects with many remembered set entries, on |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2777 |
// the assumption that such objects are likely still live. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2778 |
bool is_remset_small(HeapRegion* region) const { |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2779 |
HeapRegionRemSet* const rset = region->rem_set(); |
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2780 |
return G1EagerReclaimHumongousObjectsWithStaleRefs |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2781 |
? rset->occupancy_less_or_equal_than(G1RSetSparseRegionEntries) |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2782 |
: rset->is_empty(); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2783 |
} |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2784 |
|
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2785 |
bool humongous_region_is_candidate(G1CollectedHeap* heap, HeapRegion* region) const { |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2786 |
assert(region->is_starts_humongous(), "Must start a humongous object"); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2787 |
|
37471
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2788 |
oop obj = oop(region->bottom()); |
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2789 |
|
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2790 |
// Dead objects cannot be eager reclaim candidates. Due to class |
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2791 |
// unloading it is unsafe to query their classes so we return early. |
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2792 |
if (heap->is_obj_dead(obj, region)) { |
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2793 |
return false; |
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2794 |
} |
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2795 |
|
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2796 |
// Candidate selection must satisfy the following constraints |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2797 |
// while concurrent marking is in progress: |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2798 |
// |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2799 |
// * In order to maintain SATB invariants, an object must not be |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2800 |
// reclaimed if it was allocated before the start of marking and |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2801 |
// has not had its references scanned. Such an object must have |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2802 |
// its references (including type metadata) scanned to ensure no |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2803 |
// live objects are missed by the marking process. Objects |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2804 |
// allocated after the start of concurrent marking don't need to |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2805 |
// be scanned. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2806 |
// |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2807 |
// * An object must not be reclaimed if it is on the concurrent |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2808 |
// mark stack. Objects allocated after the start of concurrent |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2809 |
// marking are never pushed on the mark stack. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2810 |
// |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2811 |
// Nominating only objects allocated after the start of concurrent |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2812 |
// marking is sufficient to meet both constraints. This may miss |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2813 |
// some objects that satisfy the constraints, but the marking data |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2814 |
// structures don't support efficiently performing the needed |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2815 |
// additional tests or scrubbing of the mark stack. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2816 |
// |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2817 |
// However, we presently only nominate is_typeArray() objects. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2818 |
// A humongous object containing references induces remembered |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2819 |
// set entries on other regions. In order to reclaim such an |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2820 |
// object, those remembered sets would need to be cleaned up. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2821 |
// |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2822 |
// We also treat is_typeArray() objects specially, allowing them |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2823 |
// to be reclaimed even if allocated before the start of |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2824 |
// concurrent mark. For this we rely on mark stack insertion to |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2825 |
// exclude is_typeArray() objects, preventing reclaiming an object |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2826 |
// that is in the mark stack. We also rely on the metadata for |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2827 |
// such objects to be built-in and so ensured to be kept live. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2828 |
// Frequent allocation and drop of large binary blobs is an |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2829 |
// important use case for eager reclaim, and this special handling |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2830 |
// may reduce needed headroom. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2831 |
|
37471
6ba3e52c2bd6
8153843: G1CardLiveDataHelper incorrectly sets next_live_bytes on dead humongous regions
mgerdin
parents:
37468
diff
changeset
|
2832 |
return obj->is_typeArray() && is_remset_small(region); |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2833 |
} |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2834 |
|
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2835 |
public: |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2836 |
RegisterHumongousWithInCSetFastTestClosure() |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2837 |
: _total_humongous(0), |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2838 |
_candidate_humongous(0), |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2839 |
_dcq(&JavaThread::dirty_card_queue_set()) { |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2840 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2841 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2842 |
virtual bool doHeapRegion(HeapRegion* r) { |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
2843 |
if (!r->is_starts_humongous()) { |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2844 |
return false; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2845 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2846 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2847 |
|
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2848 |
bool is_candidate = humongous_region_is_candidate(g1h, r); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2849 |
uint rindex = r->hrm_index(); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2850 |
g1h->set_humongous_reclaim_candidate(rindex, is_candidate); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2851 |
if (is_candidate) { |
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2852 |
_candidate_humongous++; |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2853 |
g1h->register_humongous_region_with_cset(rindex); |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2854 |
// Is_candidate already filters out humongous object with large remembered sets. |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2855 |
// If we have a humongous object with a few remembered sets, we simply flush these |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2856 |
// remembered set entries into the DCQS. That will result in automatic |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2857 |
// re-evaluation of their remembered set entries during the following evacuation |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2858 |
// phase. |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2859 |
if (!r->rem_set()->is_empty()) { |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2860 |
guarantee(r->rem_set()->occupancy_less_or_equal_than(G1RSetSparseRegionEntries), |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2861 |
"Found a not-small remembered set here. This is inconsistent with previous assumptions."); |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2862 |
G1SATBCardTableLoggingModRefBS* bs = g1h->g1_barrier_set(); |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2863 |
HeapRegionRemSetIterator hrrs(r->rem_set()); |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2864 |
size_t card_index; |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2865 |
while (hrrs.has_next(card_index)) { |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2866 |
jbyte* card_ptr = (jbyte*)bs->byte_for_index(card_index); |
28835
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2867 |
// The remembered set might contain references to already freed |
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2868 |
// regions. Filter out such entries to avoid failing card table |
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2869 |
// verification. |
33757
a3ff821552b7
8141422: G1 eager reclaim card dirtying may dirty outside of allocated objects
mgerdin
parents:
33739
diff
changeset
|
2870 |
if (g1h->is_in_closed_subset(bs->addr_for(card_ptr))) { |
28835
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2871 |
if (*card_ptr != CardTableModRefBS::dirty_card_val()) { |
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2872 |
*card_ptr = CardTableModRefBS::dirty_card_val(); |
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2873 |
_dcq.enqueue(card_ptr); |
2e467a95d04c
8069034: gc/g1/TestEagerReclaimHumongousRegionsClearMarkBits.java nightly failure
sjohanss
parents:
28478
diff
changeset
|
2874 |
} |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2875 |
} |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2876 |
} |
34135
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
2877 |
assert(hrrs.n_yielded() == r->rem_set()->occupied(), |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
2878 |
"Remembered set hash maps out of sync, cur: " SIZE_FORMAT " entries, next: " SIZE_FORMAT " entries", |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
2879 |
hrrs.n_yielded(), r->rem_set()->occupied()); |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2880 |
r->rem_set()->clear_locked(); |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2881 |
} |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2882 |
assert(r->rem_set()->is_empty(), "At this point any humongous candidate remembered set must be empty."); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2883 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2884 |
_total_humongous++; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2885 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2886 |
return false; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2887 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2888 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2889 |
size_t total_humongous() const { return _total_humongous; } |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2890 |
size_t candidate_humongous() const { return _candidate_humongous; } |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2891 |
|
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2892 |
void flush_rem_set_entries() { _dcq.flush(); } |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2893 |
}; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2894 |
|
29470
e34bbcd36e53
8030646: track collection set membership in one place
ehelin
parents:
29078
diff
changeset
|
2895 |
void G1CollectedHeap::register_humongous_regions_with_cset() { |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2896 |
if (!G1EagerReclaimHumongousObjects) { |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2897 |
g1_policy()->phase_times()->record_fast_reclaim_humongous_stats(0.0, 0, 0); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2898 |
return; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2899 |
} |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2900 |
double time = os::elapsed_counter(); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2901 |
|
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
2902 |
// Collect reclaim candidate information and register candidates with cset. |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2903 |
RegisterHumongousWithInCSetFastTestClosure cl; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2904 |
heap_region_iterate(&cl); |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2905 |
|
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2906 |
time = ((double)(os::elapsed_counter() - time) / os::elapsed_frequency()) * 1000.0; |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2907 |
g1_policy()->phase_times()->record_fast_reclaim_humongous_stats(time, |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2908 |
cl.total_humongous(), |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2909 |
cl.candidate_humongous()); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2910 |
_has_humongous_reclaim_candidates = cl.candidate_humongous() > 0; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2911 |
|
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2912 |
// Finally flush all remembered set entries to re-check into the global DCQS. |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
2913 |
cl.flush_rem_set_entries(); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2914 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
2915 |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2916 |
class VerifyRegionRemSetClosure : public HeapRegionClosure { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2917 |
public: |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2918 |
bool doHeapRegion(HeapRegion* hr) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2919 |
if (!hr->is_archive() && !hr->is_continues_humongous()) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2920 |
hr->verify_rem_set(); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2921 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2922 |
return false; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2923 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2924 |
}; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
2925 |
|
30878
f1702744b3a4
8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
stefank
parents:
30876
diff
changeset
|
2926 |
uint G1CollectedHeap::num_task_queues() const { |
f1702744b3a4
8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
stefank
parents:
30876
diff
changeset
|
2927 |
return _task_queues->size(); |
f1702744b3a4
8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
stefank
parents:
30876
diff
changeset
|
2928 |
} |
f1702744b3a4
8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
stefank
parents:
30876
diff
changeset
|
2929 |
|
6251 | 2930 |
#if TASKQUEUE_STATS |
2931 |
void G1CollectedHeap::print_taskqueue_stats_hdr(outputStream* const st) { |
|
2932 |
st->print_raw_cr("GC Task Stats"); |
|
2933 |
st->print_raw("thr "); TaskQueueStats::print_header(1, st); st->cr(); |
|
2934 |
st->print_raw("--- "); TaskQueueStats::print_header(2, st); st->cr(); |
|
2935 |
} |
|
2936 |
||
35061 | 2937 |
void G1CollectedHeap::print_taskqueue_stats() const { |
37180
d73f2a3c0fdb
8152400: Enabling TASK_STATS_ONLY filters out just enabled messages anyway
tschatzl
parents:
37165
diff
changeset
|
2938 |
if (!log_is_enabled(Trace, gc, task, stats)) { |
35061 | 2939 |
return; |
2940 |
} |
|
37242 | 2941 |
Log(gc, task, stats) log; |
35061 | 2942 |
ResourceMark rm; |
2943 |
outputStream* st = log.trace_stream(); |
|
2944 |
||
6251 | 2945 |
print_taskqueue_stats_hdr(st); |
2946 |
||
2947 |
TaskQueueStats totals; |
|
30878
f1702744b3a4
8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
stefank
parents:
30876
diff
changeset
|
2948 |
const uint n = num_task_queues(); |
30585 | 2949 |
for (uint i = 0; i < n; ++i) { |
2950 |
st->print("%3u ", i); task_queue(i)->stats.print(st); st->cr(); |
|
6251 | 2951 |
totals += task_queue(i)->stats; |
2952 |
} |
|
2953 |
st->print_raw("tot "); totals.print(st); st->cr(); |
|
2954 |
||
2955 |
DEBUG_ONLY(totals.verify()); |
|
2956 |
} |
|
2957 |
||
2958 |
void G1CollectedHeap::reset_taskqueue_stats() { |
|
30878
f1702744b3a4
8080877: Don't use workers()->total_workers() when walking G1CollectedHeap::_task_queues
stefank
parents:
30876
diff
changeset
|
2959 |
const uint n = num_task_queues(); |
30585 | 2960 |
for (uint i = 0; i < n; ++i) { |
6251 | 2961 |
task_queue(i)->stats.reset(); |
2962 |
} |
|
2963 |
} |
|
2964 |
#endif // TASKQUEUE_STATS |
|
2965 |
||
31397
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2966 |
void G1CollectedHeap::wait_for_root_region_scanning() { |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2967 |
double scan_wait_start = os::elapsedTime(); |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2968 |
// We have to wait until the CM threads finish scanning the |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2969 |
// root regions as it's the only way to ensure that all the |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2970 |
// objects on them have been correctly scanned before we start |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2971 |
// moving them during the GC. |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2972 |
bool waited = _cm->root_regions()->wait_until_scan_finished(); |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2973 |
double wait_time_ms = 0.0; |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2974 |
if (waited) { |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2975 |
double scan_wait_end = os::elapsedTime(); |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2976 |
wait_time_ms = (scan_wait_end - scan_wait_start) * 1000.0; |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2977 |
} |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2978 |
g1_policy()->phase_times()->record_root_region_scan_wait_time(wait_time_ms); |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2979 |
} |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
2980 |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2981 |
class G1PrintCollectionSetClosure : public HeapRegionClosure { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2982 |
private: |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2983 |
G1HRPrinter* _hr_printer; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2984 |
public: |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2985 |
G1PrintCollectionSetClosure(G1HRPrinter* hr_printer) : HeapRegionClosure(), _hr_printer(hr_printer) { } |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2986 |
|
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2987 |
virtual bool doHeapRegion(HeapRegion* r) { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2988 |
_hr_printer->cset(r); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2989 |
return false; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2990 |
} |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2991 |
}; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
2992 |
|
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2993 |
void G1CollectedHeap::start_new_collection_set() { |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2994 |
collection_set()->start_incremental_building(); |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2995 |
|
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2996 |
clear_cset_fast_test(); |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2997 |
|
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2998 |
guarantee(_eden.length() == 0, "eden should have been cleared"); |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
2999 |
g1_policy()->transfer_survivors_to_cset(survivor()); |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
3000 |
} |
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
3001 |
|
7398 | 3002 |
bool |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
3003 |
G1CollectedHeap::do_collection_pause_at_safepoint(double target_pause_time_ms) { |
7923 | 3004 |
assert_at_safepoint(true /* should_be_vm_thread */); |
3005 |
guarantee(!is_gc_active(), "collection is not reentrant"); |
|
3006 |
||
35492
c8c0273e6b91
8146690: Make all classes in GC follow the naming convention.
david
parents:
35465
diff
changeset
|
3007 |
if (GCLocker::check_active_before_gc()) { |
7398 | 3008 |
return false; |
5243
99e5a8f5d81f
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
5078
diff
changeset
|
3009 |
} |
99e5a8f5d81f
6909756: G1: guarantee(G1CollectedHeap::heap()->mark_in_progress(),"Precondition.")
tonyp
parents:
5078
diff
changeset
|
3010 |
|
21767
41eaa9a17059
8028128: Add a type safe alternative for working with counter based data
mgronlun
parents:
21563
diff
changeset
|
3011 |
_gc_timer_stw->register_gc_start(); |
18025 | 3012 |
|
33107
77bf0d2069a3
8134953: Make the GC ID available in a central place
brutisso
parents:
33105
diff
changeset
|
3013 |
GCIdMark gc_id_mark; |
18025 | 3014 |
_gc_tracer_stw->report_gc_start(gc_cause(), _gc_timer_stw->gc_start()); |
3015 |
||
7896
08aadd7aa3ee
6458402: 3 jvmti tests fail with CMS and +ExplicitGCInvokesConcurrent
kamg
parents:
7659
diff
changeset
|
3016 |
SvcGCMarker sgcm(SvcGCMarker::MINOR); |
7659
1d92613a1e8a
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
7658
diff
changeset
|
3017 |
ResourceMark rm; |
1d92613a1e8a
6896624: G1: hotspot:::gc and hotspot:::mem-pool-gc probes are not fired
tonyp
parents:
7658
diff
changeset
|
3018 |
|
38167
f89f2032196c
8154955: Negative Other Time in gc logs due to 'Wait for Root Region Scan' not included
tschatzl
parents:
38154
diff
changeset
|
3019 |
g1_policy()->note_gc_start(); |
f89f2032196c
8154955: Negative Other Time in gc logs due to 'Wait for Root Region Scan' not included
tschatzl
parents:
38154
diff
changeset
|
3020 |
|
31397
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
3021 |
wait_for_root_region_scanning(); |
c9cc3289b80c
8129549: G1: Make sure the concurrent thread does not mix its logging with the STW pauses
brutisso
parents:
31346
diff
changeset
|
3022 |
|
11636
3c07b54482a5
7141200: log some interesting information in ring buffers for crashes
never
parents:
11455
diff
changeset
|
3023 |
print_heap_before_gc(); |
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
3024 |
print_heap_regions(); |
18025 | 3025 |
trace_heap_before_gc(_gc_tracer_stw); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3026 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3027 |
_verifier->verify_region_sets_optional(); |
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3028 |
_verifier->verify_dirty_young_regions(); |
7923 | 3029 |
|
37120
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3030 |
// We should not be doing initial mark unless the conc mark thread is running |
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3031 |
if (!_cmThread->should_terminate()) { |
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3032 |
// This call will decide whether this pause is an initial-mark |
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3033 |
// pause. If it is, during_initial_mark_pause() will return true |
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3034 |
// for the duration of this pause. |
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3035 |
g1_policy()->decide_on_conc_mark_initiation(); |
7f2e805b6b77
8151336: Root region scanning should be cancelled and disabled when the ConcurrentMarkThread::run_service() exits
brutisso
parents:
37085
diff
changeset
|
3036 |
} |
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3037 |
|
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3038 |
// We do not allow initial-mark to be piggy-backed on a mixed GC. |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3039 |
assert(!collector_state()->during_initial_mark_pause() || |
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3040 |
collector_state()->gcs_are_young(), "sanity"); |
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3041 |
|
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3042 |
// We also do not allow mixed GCs during marking. |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3043 |
assert(!collector_state()->mark_in_progress() || collector_state()->gcs_are_young(), "sanity"); |
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3044 |
|
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3045 |
// Record whether this pause is an initial mark. When the current |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3046 |
// thread has completed its logging output and it's safe to signal |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3047 |
// the CM thread, the flag's value in the policy has been reset. |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3048 |
bool should_start_conc_mark = collector_state()->during_initial_mark_pause(); |
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3049 |
|
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3050 |
// Inner scope for scope based logging, timers, and stats collection |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3051 |
{ |
18025 | 3052 |
EvacuationInfo evacuation_info; |
3053 |
||
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3054 |
if (collector_state()->during_initial_mark_pause()) { |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
3055 |
// We are about to start a marking cycle, so we increment the |
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
3056 |
// full collection counter. |
12934
f9bc0e664918
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
12781
diff
changeset
|
3057 |
increment_old_marking_cycles_started(); |
37137
62fd3fb4b1b1
8151085: Change G1 concurrent timer and tracer measuring time
sangheki
parents:
37125
diff
changeset
|
3058 |
_cm->gc_tracer_cm()->set_gc_cause(gc_cause()); |
6058
9c9aec6ab47d
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
5891
diff
changeset
|
3059 |
} |
18025 | 3060 |
|
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3061 |
_gc_tracer_stw->report_yc_type(collector_state()->yc_type()); |
18025 | 3062 |
|
35061 | 3063 |
GCTraceCPUTime tcpu; |
12511 | 3064 |
|
35061 | 3065 |
FormatBuffer<> gc_string("Pause "); |
3066 |
if (collector_state()->during_initial_mark_pause()) { |
|
3067 |
gc_string.append("Initial Mark"); |
|
3068 |
} else if (collector_state()->gcs_are_young()) { |
|
3069 |
gc_string.append("Young"); |
|
3070 |
} else { |
|
3071 |
gc_string.append("Mixed"); |
|
3072 |
} |
|
3073 |
GCTraceTime(Info, gc) tm(gc_string, NULL, gc_cause(), true); |
|
29809
c59a5f161524
8017462: G1: guarantee fails with UseDynamicNumberOfGCThreads
jmasa
parents:
29804
diff
changeset
|
3074 |
|
36201
8d947f31586e
8150367: Add back information about the number of GC workers
brutisso
parents:
36191
diff
changeset
|
3075 |
uint active_workers = AdaptiveSizePolicy::calc_active_workers(workers()->total_workers(), |
8d947f31586e
8150367: Add back information about the number of GC workers
brutisso
parents:
36191
diff
changeset
|
3076 |
workers()->active_workers(), |
8d947f31586e
8150367: Add back information about the number of GC workers
brutisso
parents:
36191
diff
changeset
|
3077 |
Threads::number_of_non_daemon_threads()); |
40096
246c62cd9180
8159073: : Error handling incomplete when creating GC threads lazily
jmasa
parents:
39979
diff
changeset
|
3078 |
workers()->update_active_workers(active_workers); |
40922
d9f1eaf18f9a
8165292: The gc+task logging is repeated a lot, decreasing the usefulness of -Xlog:gc*=info
tschatzl
parents:
40914
diff
changeset
|
3079 |
log_info(gc,task)("Using %u workers of %u for evacuation", active_workers, workers()->total_workers()); |
36201
8d947f31586e
8150367: Add back information about the number of GC workers
brutisso
parents:
36191
diff
changeset
|
3080 |
|
9338
05ee447bd420
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
9334
diff
changeset
|
3081 |
TraceCollectorStats tcs(g1mm()->incremental_collection_counters()); |
9623
151c0b638488
7036199: Adding a notification to the implementation of GarbageCollectorMXBeans
fparain
parents:
9424
diff
changeset
|
3082 |
TraceMemoryManagerStats tms(false /* fullGC */, gc_cause()); |
4459
eb506d590394
6815790: G1: Missing MemoryPoolMXBeans with -XX:+UseG1GC
tonyp
parents:
4458
diff
changeset
|
3083 |
|
8680 | 3084 |
// If the secondary_free_list is not empty, append it to the |
3085 |
// free_list. No need to wait for the cleanup operation to finish; |
|
3086 |
// the region allocation code will check the secondary_free_list |
|
3087 |
// and wait if necessary. If the G1StressConcRegionFreeing flag is |
|
3088 |
// set, skip this step so that the region allocation code has to |
|
3089 |
// get entries from the secondary_free_list. |
|
7923 | 3090 |
if (!G1StressConcRegionFreeing) { |
8680 | 3091 |
append_secondary_free_list_if_not_empty_with_lock(); |
7923 | 3092 |
} |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3093 |
|
35909
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3094 |
G1HeapTransition heap_transition(this); |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3095 |
size_t heap_used_bytes_before_gc = used(); |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3096 |
|
11174
fccee5238e70
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
11169
diff
changeset
|
3097 |
// Don't dynamically change the number of GC threads this early. A value of |
fccee5238e70
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
11169
diff
changeset
|
3098 |
// 0 is used to indicate serial work. When parallel work is done, |
fccee5238e70
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
11169
diff
changeset
|
3099 |
// it will be set. |
fccee5238e70
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
11169
diff
changeset
|
3100 |
|
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3101 |
{ // Call to jvmpi::post_class_unload_events must occur outside of active GC |
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3102 |
IsGCActiveMark x; |
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3103 |
|
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3104 |
gc_prologue(false); |
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3105 |
increment_total_collections(false /* full gc */); |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
3106 |
increment_gc_time_stamp(); |
1374 | 3107 |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3108 |
if (VerifyRememberedSets) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3109 |
log_info(gc, verify)("[Verifying RemSets before GC]"); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3110 |
VerifyRegionRemSetClosure v_cl; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3111 |
heap_region_iterate(&v_cl); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3112 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3113 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3114 |
_verifier->verify_before_gc(); |
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3115 |
|
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3116 |
_verifier->check_bitmaps("GC Start"); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3117 |
|
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
3118 |
#if defined(COMPILER2) || INCLUDE_JVMCI |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
3119 |
DerivedPointerTable::clear(); |
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
3120 |
#endif |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3121 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3122 |
// Please see comment in g1CollectedHeap.hpp and |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3123 |
// G1CollectedHeap::ref_processing_init() to see how |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3124 |
// reference processing currently works in G1. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3125 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3126 |
// Enable discovery in the STW reference processor |
34310
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
3127 |
if (g1_policy()->should_process_references()) { |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
3128 |
ref_processor_stw()->enable_discovery(); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
3129 |
} else { |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
3130 |
ref_processor_stw()->disable_discovery(); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
3131 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3132 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3133 |
{ |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3134 |
// We want to temporarily turn off discovery by the |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3135 |
// CM ref processor, if necessary, and turn it back on |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3136 |
// on again later if we do. Using a scoped |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3137 |
// NoRefDiscovery object will do this. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3138 |
NoRefDiscovery no_cm_discovery(ref_processor_cm()); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3139 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3140 |
// Forget the current alloc region (we might even choose it to be part |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3141 |
// of the collection set!). |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
3142 |
_allocator->release_mutator_alloc_region(); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3143 |
|
13288
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3144 |
// This timing is only used by the ergonomics to handle our pause target. |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3145 |
// It is unclear why this should not include the full pause. We will |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3146 |
// investigate this in CR 7178365. |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3147 |
// |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3148 |
// Preserving the old comment here if that helps the investigation: |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3149 |
// |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3150 |
// The elapsed time induced by the start time below deliberately elides |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3151 |
// the possible verification above. |
13288
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3152 |
double sample_start_time_sec = os::elapsedTime(); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3153 |
|
16993
c9fd6b7ef40e
8010780: G1: Eden occupancy/capacity output wrong after a full GC
johnc
parents:
16606
diff
changeset
|
3154 |
g1_policy()->record_collection_pause_start(sample_start_time_sec); |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3155 |
|
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3156 |
if (collector_state()->during_initial_mark_pause()) { |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3157 |
concurrent_mark()->checkpointRootsInitialPre(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3158 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3159 |
|
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
3160 |
g1_policy()->finalize_collection_set(target_pause_time_ms, &_survivor); |
37039
79f62b89a7a6
8151178: Move the collection set out of the G1 collector policy
mgerdin
parents:
36588
diff
changeset
|
3161 |
|
79f62b89a7a6
8151178: Move the collection set out of the G1 collector policy
mgerdin
parents:
36588
diff
changeset
|
3162 |
evacuation_info.set_collectionset_regions(collection_set()->region_length()); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3163 |
|
34135
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3164 |
// Make sure the remembered sets are up to date. This needs to be |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3165 |
// done before register_humongous_regions_with_cset(), because the |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3166 |
// remembered sets are used there to choose eager reclaim candidates. |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3167 |
// If the remembered sets are not up to date we might miss some |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3168 |
// entries that need to be handled. |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3169 |
g1_rem_set()->cleanupHRRS(); |
317af749634b
8139424: SIGSEGV, Problematic frame: # V [libjvm.so+0xd0c0cc] void InstanceKlass::oop_oop_iterate_oop_maps_specialized<true,oopDesc*,MarkAndPushClosure>
sjohanss
parents:
33803
diff
changeset
|
3170 |
|
29470
e34bbcd36e53
8030646: track collection set membership in one place
ehelin
parents:
29078
diff
changeset
|
3171 |
register_humongous_regions_with_cset(); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
3172 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3173 |
assert(_verifier->check_cset_fast_test(), "Inconsistency in the InCSetState table."); |
28213
b0bf57cd1e9d
8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
tschatzl
parents:
28212
diff
changeset
|
3174 |
|
30279
c3b8486760aa
8078023: verify_no_cset_oops found reclaimed humongous object in SATB buffer
kbarrett
parents:
30272
diff
changeset
|
3175 |
// We call this after finalize_cset() to |
11455
a6ab3d8b9a4c
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
11453
diff
changeset
|
3176 |
// ensure that the CSet has been finalized. |
30279
c3b8486760aa
8078023: verify_no_cset_oops found reclaimed humongous object in SATB buffer
kbarrett
parents:
30272
diff
changeset
|
3177 |
_cm->verify_no_cset_oops(); |
11455
a6ab3d8b9a4c
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
11453
diff
changeset
|
3178 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3179 |
if (_hr_printer.is_active()) { |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
3180 |
G1PrintCollectionSetClosure cl(&_hr_printer); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
3181 |
_collection_set.iterate(&cl); |
10001
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
3182 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3183 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3184 |
// Initialize the GC alloc regions. |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
3185 |
_allocator->init_gc_alloc_regions(evacuation_info); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3186 |
|
37039
79f62b89a7a6
8151178: Move the collection set out of the G1 collector policy
mgerdin
parents:
36588
diff
changeset
|
3187 |
G1ParScanThreadStateSet per_thread_states(this, workers()->active_workers(), collection_set()->young_region_length()); |
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
3188 |
pre_evacuate_collection_set(); |
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
3189 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3190 |
// Actually do the work... |
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3191 |
evacuate_collection_set(evacuation_info, &per_thread_states); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3192 |
|
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
3193 |
post_evacuate_collection_set(evacuation_info, &per_thread_states); |
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
3194 |
|
32737
f02118695c2f
8135154: Move cards scanned and surviving young words aggregation to G1ParScanThreadStateSet
mgerdin
parents:
32736
diff
changeset
|
3195 |
const size_t* surviving_young_words = per_thread_states.surviving_young_words(); |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
3196 |
free_collection_set(&_collection_set, evacuation_info, surviving_young_words); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
3197 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
3198 |
eagerly_reclaim_humongous_regions(); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
3199 |
|
36389
1df45f48022b
8147121: Evacuation failure allocation statistics added too late
tschatzl
parents:
36372
diff
changeset
|
3200 |
record_obj_copy_mem_stats(); |
1df45f48022b
8147121: Evacuation failure allocation statistics added too late
tschatzl
parents:
36372
diff
changeset
|
3201 |
_survivor_evac_stats.adjust_desired_plab_sz(); |
1df45f48022b
8147121: Evacuation failure allocation statistics added too late
tschatzl
parents:
36372
diff
changeset
|
3202 |
_old_evac_stats.adjust_desired_plab_sz(); |
1df45f48022b
8147121: Evacuation failure allocation statistics added too late
tschatzl
parents:
36372
diff
changeset
|
3203 |
|
46347
32a6f2c6330c
8177453: Start_new_collection_set() timing done during wrong type of GC
tschatzl
parents:
46330
diff
changeset
|
3204 |
double start = os::elapsedTime(); |
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
3205 |
start_new_collection_set(); |
46347
32a6f2c6330c
8177453: Start_new_collection_set() timing done during wrong type of GC
tschatzl
parents:
46330
diff
changeset
|
3206 |
g1_policy()->phase_times()->record_start_new_cset_time_ms((os::elapsedTime() - start) * 1000.0); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3207 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3208 |
if (evacuation_failed()) { |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
3209 |
set_used(recalculate_used()); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
3210 |
if (_archive_allocator != NULL) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
3211 |
_archive_allocator->clear_used(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
3212 |
} |
30876
44a71334fd94
8080876: Replace unnecessary MAX2(ParallelGCThreads, 1) calls with ParallelGCThreads
stefank
parents:
30875
diff
changeset
|
3213 |
for (uint i = 0; i < ParallelGCThreads; i++) { |
18025 | 3214 |
if (_evacuation_failed_info_array[i].has_failed()) { |
3215 |
_gc_tracer_stw->report_evacuation_failed(_evacuation_failed_info_array[i]); |
|
3216 |
} |
|
3217 |
} |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3218 |
} else { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3219 |
// The "used" of the the collection set have already been subtracted |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3220 |
// when they were freed. Add in the bytes evacuated. |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
3221 |
increase_used(g1_policy()->bytes_copied_during_gc()); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3222 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3223 |
|
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3224 |
if (collector_state()->during_initial_mark_pause()) { |
11584
e1df4d08a1f4
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
11583
diff
changeset
|
3225 |
// We have to do this before we notify the CM threads that |
e1df4d08a1f4
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
11583
diff
changeset
|
3226 |
// they can start working to make sure that all the |
e1df4d08a1f4
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
11583
diff
changeset
|
3227 |
// appropriate initialization is done on the CM object. |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3228 |
concurrent_mark()->checkpointRootsInitialPost(); |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
3229 |
collector_state()->set_mark_in_progress(true); |
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3230 |
// Note that we don't actually trigger the CM thread at |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3231 |
// this point. We do that later when we're sure that |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3232 |
// the current thread has completed its logging output. |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3233 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3234 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3235 |
allocate_dummy_regions(); |
9334
640f1a6f0b85
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
8928
diff
changeset
|
3236 |
|
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
3237 |
_allocator->init_mutator_alloc_region(); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3238 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3239 |
{ |
37144
b7ae74d4d5d8
8151808: Factor G1 heap sizing code out of the G1CollectorPolicy
mgerdin
parents:
37142
diff
changeset
|
3240 |
size_t expand_bytes = _heap_sizing_policy->expansion_amount(); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3241 |
if (expand_bytes > 0) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3242 |
size_t bytes_before = capacity(); |
35061 | 3243 |
// No need for an ergo logging here, |
11453 | 3244 |
// expansion_amount() does this when it returns a value > 0. |
33577 | 3245 |
double expand_ms; |
41178 | 3246 |
if (!expand(expand_bytes, _workers, &expand_ms)) { |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25942
diff
changeset
|
3247 |
// We failed to expand the heap. Cannot do anything about it. |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3248 |
} |
33577 | 3249 |
g1_policy()->phase_times()->record_expand_heap_time(expand_ms); |
10529
9d5bbffbb322
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
10528
diff
changeset
|
3250 |
} |
9d5bbffbb322
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
10528
diff
changeset
|
3251 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3252 |
|
18025 | 3253 |
// We redo the verification but now wrt to the new CSet which |
11455
a6ab3d8b9a4c
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
11453
diff
changeset
|
3254 |
// has just got initialized after the previous CSet was freed. |
30279
c3b8486760aa
8078023: verify_no_cset_oops found reclaimed humongous object in SATB buffer
kbarrett
parents:
30272
diff
changeset
|
3255 |
_cm->verify_no_cset_oops(); |
11455
a6ab3d8b9a4c
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
11453
diff
changeset
|
3256 |
|
13288
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3257 |
// This timing is only used by the ergonomics to handle our pause target. |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3258 |
// It is unclear why this should not include the full pause. We will |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3259 |
// investigate this in CR 7178365. |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3260 |
double sample_end_time_sec = os::elapsedTime(); |
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3261 |
double pause_time_ms = (sample_end_time_sec - sample_start_time_sec) * MILLIUNITS; |
46571
c70b36f0730d
8178148: Log more detailed information about scan rs phase
tschatzl
parents:
46519
diff
changeset
|
3262 |
size_t total_cards_scanned = g1_policy()->phase_times()->sum_thread_work_items(G1GCPhaseTimes::ScanRS, G1GCPhaseTimes::ScannedCards); |
35909
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3263 |
g1_policy()->record_collection_pause_end(pause_time_ms, total_cards_scanned, heap_used_bytes_before_gc); |
32591
b4acfa743bb6
8134504: Remove usage of EvacuationInfo from G1CollectorPolicy
ehelin
parents:
32589
diff
changeset
|
3264 |
|
37039
79f62b89a7a6
8151178: Move the collection set out of the G1 collector policy
mgerdin
parents:
36588
diff
changeset
|
3265 |
evacuation_info.set_collectionset_used_before(collection_set()->bytes_used_before()); |
32591
b4acfa743bb6
8134504: Remove usage of EvacuationInfo from G1CollectorPolicy
ehelin
parents:
32589
diff
changeset
|
3266 |
evacuation_info.set_bytes_copied(g1_policy()->bytes_copied_during_gc()); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3267 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3268 |
MemoryService::track_memory_usage(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3269 |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3270 |
if (VerifyRememberedSets) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3271 |
log_info(gc, verify)("[Verifying RemSets after GC]"); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3272 |
VerifyRegionRemSetClosure v_cl; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3273 |
heap_region_iterate(&v_cl); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3274 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35492
diff
changeset
|
3275 |
|
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3276 |
_verifier->verify_after_gc(); |
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3277 |
_verifier->check_bitmaps("GC End"); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3278 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3279 |
assert(!ref_processor_stw()->discovery_enabled(), "Postcondition"); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3280 |
ref_processor_stw()->verify_no_references_recorded(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3281 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3282 |
// CM reference discovery will be re-enabled if necessary. |
10529
9d5bbffbb322
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
10528
diff
changeset
|
3283 |
} |
9d5bbffbb322
6929868: G1: introduce min / max young gen size bounds
brutisso
parents:
10528
diff
changeset
|
3284 |
|
2010
c13462bbad17
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
2009
diff
changeset
|
3285 |
#ifdef TRACESPINNING |
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3286 |
ParallelTaskTerminator::print_termination_counts(); |
2010
c13462bbad17
6690928: Use spinning in combination with yields for workstealing termination.
jmasa
parents:
2009
diff
changeset
|
3287 |
#endif |
1374 | 3288 |
|
3191
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3289 |
gc_epilogue(false); |
dd3cc90b9951
6855834: G1: minimize the output when -XX:+PrintHeapAtGC is set
tonyp
parents:
3000
diff
changeset
|
3290 |
} |
12935
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3291 |
|
14634
fdd9909928ae
8004170: G1: Verbose GC output is not getting flushed to log file using JDK 8
johnc
parents:
14074
diff
changeset
|
3292 |
// Print the remainder of the GC log output. |
35909
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3293 |
if (evacuation_failed()) { |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3294 |
log_info(gc)("To-space exhausted"); |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3295 |
} |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3296 |
|
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3297 |
g1_policy()->print_phases(); |
cf5f3c85e179
8148736: Let the G1 heap transition log regions instead of bytes
brutisso
parents:
35907
diff
changeset
|
3298 |
heap_transition.print(); |
14634
fdd9909928ae
8004170: G1: Verbose GC output is not getting flushed to log file using JDK 8
johnc
parents:
14074
diff
changeset
|
3299 |
|
13288
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
3300 |
// It is not yet to safe to tell the concurrent mark to |
12935
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3301 |
// start as we have some optional output below. We don't want the |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3302 |
// output from the concurrent mark thread interfering with this |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3303 |
// logging output either. |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3304 |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
3305 |
_hrm.verify_optional(); |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
3306 |
_verifier->verify_region_sets_optional(); |
12935
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3307 |
|
35061 | 3308 |
TASKQUEUE_STATS_ONLY(print_taskqueue_stats()); |
12935
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3309 |
TASKQUEUE_STATS_ONLY(reset_taskqueue_stats()); |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3310 |
|
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3311 |
print_heap_after_gc(); |
37085
53ccf09a724f
8151696: Print all regions on trace level to get same behavior as old PrintHeapAtGCExtended
sjohanss
parents:
37074
diff
changeset
|
3312 |
print_heap_regions(); |
18025 | 3313 |
trace_heap_after_gc(_gc_tracer_stw); |
12935
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3314 |
|
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3315 |
// We must call G1MonitoringSupport::update_sizes() in the same scoping level |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3316 |
// as an active TraceMemoryManagerStats object (i.e. before the destructor for the |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3317 |
// TraceMemoryManagerStats is called) so that the G1 memory pools are updated |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3318 |
// before any GC notifications are raised. |
2ae81fce3911
7173460: G1: java/lang/management/MemoryMXBean/CollectionUsageThreshold.java failes with G1
brutisso
parents:
12934
diff
changeset
|
3319 |
g1mm()->update_sizes(); |
18025 | 3320 |
|
3321 |
_gc_tracer_stw->report_evacuation_info(&evacuation_info); |
|
3322 |
_gc_tracer_stw->report_tenuring_threshold(_g1_policy->tenuring_threshold()); |
|
21767
41eaa9a17059
8028128: Add a type safe alternative for working with counter based data
mgronlun
parents:
21563
diff
changeset
|
3323 |
_gc_timer_stw->register_gc_end(); |
18025 | 3324 |
_gc_tracer_stw->report_gc_end(_gc_timer_stw->gc_end(), _gc_timer_stw->time_partitions()); |
3325 |
} |
|
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3326 |
// It should now be safe to tell the concurrent mark thread to start |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3327 |
// without its logging output interfering with the logging output |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3328 |
// that came from the pause. |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3329 |
|
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3330 |
if (should_start_conc_mark) { |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3331 |
// CAUTION: after the doConcurrentMark() call below, |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3332 |
// the concurrent marking thread(s) could be running |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3333 |
// concurrently with us. Make sure that anything after |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3334 |
// this point does not assume that we are the only GC thread |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3335 |
// running. Note: of course, the actual marking work will |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3336 |
// not start until the safepoint itself is released in |
24094 | 3337 |
// SuspendibleThreadSet::desynchronize(). |
11578
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3338 |
doConcurrentMark(); |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3339 |
} |
fc6f77eca886
7129271: G1: Interference from multiple threads in PrintGC/PrintGCDetails output
johnc
parents:
11576
diff
changeset
|
3340 |
|
7398 | 3341 |
return true; |
1374 | 3342 |
} |
3343 |
||
3344 |
void G1CollectedHeap::remove_self_forwarding_pointers() { |
|
31631
4536cf7bc89f
8129558: Coalesce dead objects during removal of self-forwarded pointers
tschatzl
parents:
31598
diff
changeset
|
3345 |
G1ParRemoveSelfForwardPtrsTask rsfp_task; |
27009
e7e723732b6b
8058298: Separate heap region iterator claim values from the data structures iterated over
mlarsson
parents:
27008
diff
changeset
|
3346 |
workers()->run_task(&rsfp_task); |
34311
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
3347 |
} |
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
3348 |
|
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
3349 |
void G1CollectedHeap::restore_after_evac_failure() { |
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
3350 |
double remove_self_forwards_start = os::elapsedTime(); |
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
3351 |
|
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
3352 |
remove_self_forwarding_pointers(); |
39228
32ce84798166
8156032: Clean up parallel GC specific code from vm/gc/shared/preservedMarks.cpp
lmesnik
parents:
38185
diff
changeset
|
3353 |
SharedRestorePreservedMarksTaskExecutor task_executor(workers()); |
32ce84798166
8156032: Clean up parallel GC specific code from vm/gc/shared/preservedMarks.cpp
lmesnik
parents:
38185
diff
changeset
|
3354 |
_preserved_marks_set.restore(&task_executor); |
23455
e541bff96524
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
23454
diff
changeset
|
3355 |
|
e541bff96524
8035654: Add times for evacuation failure handling in "Other" time
tschatzl
parents:
23454
diff
changeset
|
3356 |
g1_policy()->phase_times()->record_evac_fail_remove_self_forwards((os::elapsedTime() - remove_self_forwards_start) * 1000.0); |
1374 | 3357 |
} |
3358 |
||
32187
0891f3fa84fc
8133047: Rename G1ParScanThreadState::_queue_num to _worker_id
tschatzl
parents:
32186
diff
changeset
|
3359 |
void G1CollectedHeap::preserve_mark_during_evac_failure(uint worker_id, oop obj, markOop m) { |
31976
da45f85bf4e1
8004687: G1: Parallelize object self-forwarding and scanning during an evacuation failure
tschatzl
parents:
31975
diff
changeset
|
3360 |
if (!_evacuation_failed) { |
18025 | 3361 |
_evacuation_failed = true; |
31976
da45f85bf4e1
8004687: G1: Parallelize object self-forwarding and scanning during an evacuation failure
tschatzl
parents:
31975
diff
changeset
|
3362 |
} |
da45f85bf4e1
8004687: G1: Parallelize object self-forwarding and scanning during an evacuation failure
tschatzl
parents:
31975
diff
changeset
|
3363 |
|
32187
0891f3fa84fc
8133047: Rename G1ParScanThreadState::_queue_num to _worker_id
tschatzl
parents:
32186
diff
changeset
|
3364 |
_evacuation_failed_info_array[worker_id].register_copy_failure(obj->size()); |
38081
a3bcb7197d45
8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
tonyp
parents:
38013
diff
changeset
|
3365 |
_preserved_marks_set.get(worker_id)->push_if_necessary(obj, m); |
1374 | 3366 |
} |
3367 |
||
6959
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3368 |
bool G1ParEvacuateFollowersClosure::offer_termination() { |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3369 |
G1ParScanThreadState* const pss = par_scan_state(); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3370 |
start_term_time(); |
6959
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3371 |
const bool res = terminator()->offer_termination(); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3372 |
end_term_time(); |
6959
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3373 |
return res; |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3374 |
} |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3375 |
|
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3376 |
void G1ParEvacuateFollowersClosure::do_void() { |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3377 |
G1ParScanThreadState* const pss = par_scan_state(); |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3378 |
pss->trim_queue(); |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3379 |
do { |
25483
962ccf95c515
8035401: Fix visibility of G1ParScanThreadState members
tschatzl
parents:
25482
diff
changeset
|
3380 |
pss->steal_and_trim_queue(queues()); |
6959
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3381 |
} while (!offer_termination()); |
01bebea2fd5c
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
6958
diff
changeset
|
3382 |
} |
1374 | 3383 |
|
3384 |
class G1ParTask : public AbstractGangTask { |
|
3385 |
protected: |
|
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3386 |
G1CollectedHeap* _g1h; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3387 |
G1ParScanThreadStateSet* _pss; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3388 |
RefToScanQueueSet* _queues; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3389 |
G1RootProcessor* _root_processor; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3390 |
ParallelTaskTerminator _terminator; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3391 |
uint _n_workers; |
1374 | 3392 |
|
3393 |
public: |
|
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3394 |
G1ParTask(G1CollectedHeap* g1h, G1ParScanThreadStateSet* per_thread_states, RefToScanQueueSet *task_queues, G1RootProcessor* root_processor, uint n_workers) |
1374 | 3395 |
: AbstractGangTask("G1 collection"), |
3396 |
_g1h(g1h), |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3397 |
_pss(per_thread_states), |
1374 | 3398 |
_queues(task_queues), |
29693
fac175f7a466
8075210: Refactor strong root processing in order to allow G1 to evolve separately from GenCollectedHeap
mgerdin
parents:
29687
diff
changeset
|
3399 |
_root_processor(root_processor), |
30881
7a3899d7cea0
8080879: Remove FlexibleWorkGang::set_for_termination
stefank
parents:
30878
diff
changeset
|
3400 |
_terminator(n_workers, _queues), |
32186
6f0257cb6493
8133043: Clean up code related to termination stats printing
tschatzl
parents:
32185
diff
changeset
|
3401 |
_n_workers(n_workers) |
1374 | 3402 |
{} |
3403 |
||
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
3404 |
void work(uint worker_id) { |
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
3405 |
if (worker_id >= _n_workers) return; // no work needed this round |
5891 | 3406 |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3407 |
double start_sec = os::elapsedTime(); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3408 |
_g1h->g1_policy()->phase_times()->record_time_secs(G1GCPhaseTimes::GCWorkerStart, worker_id, start_sec); |
5891 | 3409 |
|
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3410 |
{ |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3411 |
ResourceMark rm; |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3412 |
HandleMark hm; |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3413 |
|
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3414 |
ReferenceProcessor* rp = _g1h->ref_processor_stw(); |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3415 |
|
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
3416 |
G1ParScanThreadState* pss = _pss->state_for_worker(worker_id); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3417 |
pss->set_ref_processor(rp); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3418 |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3419 |
double start_strong_roots_sec = os::elapsedTime(); |
33213
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
3420 |
|
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
3421 |
_root_processor->evacuate_roots(pss->closures(), worker_id); |
29693
fac175f7a466
8075210: Refactor strong root processing in order to allow G1 to evolve separately from GenCollectedHeap
mgerdin
parents:
29687
diff
changeset
|
3422 |
|
33213
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
3423 |
// We pass a weak code blobs closure to the remembered set scanning because we want to avoid |
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
3424 |
// treating the nmethods visited to act as roots for concurrent marking. |
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
3425 |
// We only want to make sure that the oops in the nmethods are adjusted with regard to the |
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
3426 |
// objects copied by the current evacuation. |
46572 | 3427 |
_g1h->g1_rem_set()->oops_into_collection_set_do(pss, |
46571
c70b36f0730d
8178148: Log more detailed information about scan rs phase
tschatzl
parents:
46519
diff
changeset
|
3428 |
pss->closures()->weak_codeblobs(), |
c70b36f0730d
8178148: Log more detailed information about scan rs phase
tschatzl
parents:
46519
diff
changeset
|
3429 |
worker_id); |
32737
f02118695c2f
8135154: Move cards scanned and surviving young words aggregation to G1ParScanThreadStateSet
mgerdin
parents:
32736
diff
changeset
|
3430 |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3431 |
double strong_roots_sec = os::elapsedTime() - start_strong_roots_sec; |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3432 |
|
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3433 |
double term_sec = 0.0; |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3434 |
size_t evac_term_attempts = 0; |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3435 |
{ |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3436 |
double start = os::elapsedTime(); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3437 |
G1ParEvacuateFollowersClosure evac(_g1h, pss, _queues, &_terminator); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3438 |
evac.do_void(); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3439 |
|
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3440 |
evac_term_attempts = evac.term_attempts(); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3441 |
term_sec = evac.term_time(); |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
3442 |
double elapsed_sec = os::elapsedTime() - start; |
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
3443 |
_g1h->g1_policy()->phase_times()->add_time_secs(G1GCPhaseTimes::ObjCopy, worker_id, elapsed_sec - term_sec); |
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
3444 |
_g1h->g1_policy()->phase_times()->record_time_secs(G1GCPhaseTimes::Termination, worker_id, term_sec); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3445 |
_g1h->g1_policy()->phase_times()->record_thread_work_item(G1GCPhaseTimes::Termination, worker_id, evac_term_attempts); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3446 |
} |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3447 |
|
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3448 |
assert(pss->queue_is_empty(), "should be empty"); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3449 |
|
35061 | 3450 |
if (log_is_enabled(Debug, gc, task, stats)) { |
32186
6f0257cb6493
8133043: Clean up code related to termination stats printing
tschatzl
parents:
32185
diff
changeset
|
3451 |
MutexLockerEx x(ParGCRareEvent_lock, Mutex::_no_safepoint_check_flag); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3452 |
size_t lab_waste; |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3453 |
size_t lab_undo_waste; |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3454 |
pss->waste(lab_waste, lab_undo_waste); |
35061 | 3455 |
_g1h->print_termination_stats(worker_id, |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3456 |
(os::elapsedTime() - start_sec) * 1000.0, /* elapsed time */ |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3457 |
strong_roots_sec * 1000.0, /* strong roots time */ |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3458 |
term_sec * 1000.0, /* evac term time */ |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3459 |
evac_term_attempts, /* evac term attempts */ |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3460 |
lab_waste, /* alloc buffer waste */ |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3461 |
lab_undo_waste /* undo waste */ |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3462 |
); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3463 |
} |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3464 |
|
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3465 |
// Close the inner scope so that the ResourceMark and HandleMark |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3466 |
// destructors are executed here and are included as part of the |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
3467 |
// "GC Worker Time". |
1374 | 3468 |
} |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
3469 |
_g1h->g1_policy()->phase_times()->record_time_secs(G1GCPhaseTimes::GCWorkerEnd, worker_id, os::elapsedTime()); |
1374 | 3470 |
} |
3471 |
}; |
|
3472 |
||
35061 | 3473 |
void G1CollectedHeap::print_termination_stats_hdr() { |
3474 |
log_debug(gc, task, stats)("GC Termination Stats"); |
|
3475 |
log_debug(gc, task, stats)(" elapsed --strong roots-- -------termination------- ------waste (KiB)------"); |
|
3476 |
log_debug(gc, task, stats)("thr ms ms %% ms %% attempts total alloc undo"); |
|
3477 |
log_debug(gc, task, stats)("--- --------- --------- ------ --------- ------ -------- ------- ------- -------"); |
|
3478 |
} |
|
3479 |
||
3480 |
void G1CollectedHeap::print_termination_stats(uint worker_id, |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3481 |
double elapsed_ms, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3482 |
double strong_roots_ms, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3483 |
double term_ms, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3484 |
size_t term_attempts, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3485 |
size_t alloc_buffer_waste, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3486 |
size_t undo_waste) const { |
35061 | 3487 |
log_debug(gc, task, stats) |
3488 |
("%3d %9.2f %9.2f %6.2f " |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3489 |
"%9.2f %6.2f " SIZE_FORMAT_W(8) " " |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3490 |
SIZE_FORMAT_W(7) " " SIZE_FORMAT_W(7) " " SIZE_FORMAT_W(7), |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3491 |
worker_id, elapsed_ms, strong_roots_ms, strong_roots_ms * 100 / elapsed_ms, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3492 |
term_ms, term_ms * 100 / elapsed_ms, term_attempts, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3493 |
(alloc_buffer_waste + undo_waste) * HeapWordSize / K, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3494 |
alloc_buffer_waste * HeapWordSize / K, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3495 |
undo_waste * HeapWordSize / K); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3496 |
} |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
3497 |
|
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3498 |
class G1StringAndSymbolCleaningTask : public AbstractGangTask { |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3499 |
private: |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3500 |
BoolObjectClosure* _is_alive; |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3501 |
G1StringDedupUnlinkOrOopsDoClosure _dedup_closure; |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3502 |
|
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3503 |
int _initial_string_table_size; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3504 |
int _initial_symbol_table_size; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3505 |
|
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3506 |
bool _process_strings; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3507 |
int _strings_processed; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3508 |
int _strings_removed; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3509 |
|
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3510 |
bool _process_symbols; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3511 |
int _symbols_processed; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3512 |
int _symbols_removed; |
22767
abdce93d4215
8033443: Test8000311 fails after latest changes to parallelize string and symbol table unlink
tschatzl
parents:
22766
diff
changeset
|
3513 |
|
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3514 |
bool _process_string_dedup; |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3515 |
|
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3516 |
public: |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3517 |
G1StringAndSymbolCleaningTask(BoolObjectClosure* is_alive, bool process_strings, bool process_symbols, bool process_string_dedup) : |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3518 |
AbstractGangTask("String/Symbol Unlinking"), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3519 |
_is_alive(is_alive), |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3520 |
_dedup_closure(is_alive, NULL, false), |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3521 |
_process_strings(process_strings), _strings_processed(0), _strings_removed(0), |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3522 |
_process_symbols(process_symbols), _symbols_processed(0), _symbols_removed(0), |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3523 |
_process_string_dedup(process_string_dedup) { |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3524 |
|
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3525 |
_initial_string_table_size = StringTable::the_table()->table_size(); |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3526 |
_initial_symbol_table_size = SymbolTable::the_table()->table_size(); |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3527 |
if (process_strings) { |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3528 |
StringTable::clear_parallel_claimed_index(); |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3529 |
} |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3530 |
if (process_symbols) { |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3531 |
SymbolTable::clear_parallel_claimed_index(); |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3532 |
} |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3533 |
} |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3534 |
|
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3535 |
~G1StringAndSymbolCleaningTask() { |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3536 |
guarantee(!_process_strings || StringTable::parallel_claimed_index() >= _initial_string_table_size, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
3537 |
"claim value %d after unlink less than initial string table size %d", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
3538 |
StringTable::parallel_claimed_index(), _initial_string_table_size); |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3539 |
guarantee(!_process_symbols || SymbolTable::parallel_claimed_index() >= _initial_symbol_table_size, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
3540 |
"claim value %d after unlink less than initial symbol table size %d", |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
3541 |
SymbolTable::parallel_claimed_index(), _initial_symbol_table_size); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3542 |
|
37147
3560f05bd7c7
8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
stefank
parents:
37142
diff
changeset
|
3543 |
log_info(gc, stringtable)( |
3560f05bd7c7
8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
stefank
parents:
37142
diff
changeset
|
3544 |
"Cleaned string and symbol table, " |
3560f05bd7c7
8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
stefank
parents:
37142
diff
changeset
|
3545 |
"strings: " SIZE_FORMAT " processed, " SIZE_FORMAT " removed, " |
3560f05bd7c7
8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
stefank
parents:
37142
diff
changeset
|
3546 |
"symbols: " SIZE_FORMAT " processed, " SIZE_FORMAT " removed", |
3560f05bd7c7
8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
stefank
parents:
37142
diff
changeset
|
3547 |
strings_processed(), strings_removed(), |
3560f05bd7c7
8152104: G1 StringTable cleaning incorrectly logs with the stringdedup tag
stefank
parents:
37142
diff
changeset
|
3548 |
symbols_processed(), symbols_removed()); |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3549 |
} |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3550 |
|
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3551 |
void work(uint worker_id) { |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3552 |
int strings_processed = 0; |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3553 |
int strings_removed = 0; |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3554 |
int symbols_processed = 0; |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3555 |
int symbols_removed = 0; |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3556 |
if (_process_strings) { |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3557 |
StringTable::possibly_parallel_unlink(_is_alive, &strings_processed, &strings_removed); |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3558 |
Atomic::add(strings_processed, &_strings_processed); |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3559 |
Atomic::add(strings_removed, &_strings_removed); |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3560 |
} |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3561 |
if (_process_symbols) { |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3562 |
SymbolTable::possibly_parallel_unlink(&symbols_processed, &symbols_removed); |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3563 |
Atomic::add(symbols_processed, &_symbols_processed); |
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3564 |
Atomic::add(symbols_removed, &_symbols_removed); |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3565 |
} |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3566 |
if (_process_string_dedup) { |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3567 |
G1StringDedup::parallel_unlink(&_dedup_closure, worker_id); |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3568 |
} |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3569 |
} |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3570 |
|
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3571 |
size_t strings_processed() const { return (size_t)_strings_processed; } |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3572 |
size_t strings_removed() const { return (size_t)_strings_removed; } |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3573 |
|
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3574 |
size_t symbols_processed() const { return (size_t)_symbols_processed; } |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3575 |
size_t symbols_removed() const { return (size_t)_symbols_removed; } |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3576 |
}; |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3577 |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3578 |
class G1CodeCacheUnloadingTask VALUE_OBJ_CLASS_SPEC { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3579 |
private: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3580 |
static Monitor* _lock; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3581 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3582 |
BoolObjectClosure* const _is_alive; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3583 |
const bool _unloading_occurred; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3584 |
const uint _num_workers; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3585 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3586 |
// Variables used to claim nmethods. |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3587 |
CompiledMethod* _first_nmethod; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3588 |
volatile CompiledMethod* _claimed_nmethod; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3589 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3590 |
// The list of nmethods that need to be processed by the second pass. |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3591 |
volatile CompiledMethod* _postponed_list; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3592 |
volatile uint _num_entered_barrier; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3593 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3594 |
public: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3595 |
G1CodeCacheUnloadingTask(uint num_workers, BoolObjectClosure* is_alive, bool unloading_occurred) : |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3596 |
_is_alive(is_alive), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3597 |
_unloading_occurred(unloading_occurred), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3598 |
_num_workers(num_workers), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3599 |
_first_nmethod(NULL), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3600 |
_claimed_nmethod(NULL), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3601 |
_postponed_list(NULL), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3602 |
_num_entered_barrier(0) |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3603 |
{ |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3604 |
CompiledMethod::increase_unloading_clock(); |
26796 | 3605 |
// Get first alive nmethod |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3606 |
CompiledMethodIterator iter = CompiledMethodIterator(); |
26796 | 3607 |
if(iter.next_alive()) { |
3608 |
_first_nmethod = iter.method(); |
|
3609 |
} |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3610 |
_claimed_nmethod = (volatile CompiledMethod*)_first_nmethod; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3611 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3612 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3613 |
~G1CodeCacheUnloadingTask() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3614 |
CodeCache::verify_clean_inline_caches(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3615 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3616 |
CodeCache::set_needs_cache_clean(false); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3617 |
guarantee(CodeCache::scavenge_root_nmethods() == NULL, "Must be"); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3618 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3619 |
CodeCache::verify_icholder_relocations(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3620 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3621 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3622 |
private: |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3623 |
void add_to_postponed_list(CompiledMethod* nm) { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3624 |
CompiledMethod* old; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3625 |
do { |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3626 |
old = (CompiledMethod*)_postponed_list; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3627 |
nm->set_unloading_next(old); |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3628 |
} while ((CompiledMethod*)Atomic::cmpxchg_ptr(nm, &_postponed_list, old) != old); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3629 |
} |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3630 |
|
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3631 |
void clean_nmethod(CompiledMethod* nm) { |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3632 |
bool postponed = nm->do_unloading_parallel(_is_alive, _unloading_occurred); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3633 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3634 |
if (postponed) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3635 |
// This nmethod referred to an nmethod that has not been cleaned/unloaded yet. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3636 |
add_to_postponed_list(nm); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3637 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3638 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3639 |
// Mark that this thread has been cleaned/unloaded. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3640 |
// After this call, it will be safe to ask if this nmethod was unloaded or not. |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3641 |
nm->set_unloading_clock(CompiledMethod::global_unloading_clock()); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3642 |
} |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3643 |
|
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3644 |
void clean_nmethod_postponed(CompiledMethod* nm) { |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3645 |
nm->do_unloading_parallel_postponed(_is_alive, _unloading_occurred); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3646 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3647 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3648 |
static const int MaxClaimNmethods = 16; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3649 |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3650 |
void claim_nmethods(CompiledMethod** claimed_nmethods, int *num_claimed_nmethods) { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3651 |
CompiledMethod* first; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3652 |
CompiledMethodIterator last; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3653 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3654 |
do { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3655 |
*num_claimed_nmethods = 0; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3656 |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3657 |
first = (CompiledMethod*)_claimed_nmethod; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3658 |
last = CompiledMethodIterator(first); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3659 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3660 |
if (first != NULL) { |
26796 | 3661 |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3662 |
for (int i = 0; i < MaxClaimNmethods; i++) { |
26796 | 3663 |
if (!last.next_alive()) { |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3664 |
break; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3665 |
} |
26796 | 3666 |
claimed_nmethods[i] = last.method(); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3667 |
(*num_claimed_nmethods)++; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3668 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3669 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3670 |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3671 |
} while ((CompiledMethod*)Atomic::cmpxchg_ptr(last.method(), &_claimed_nmethod, first) != first); |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3672 |
} |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3673 |
|
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3674 |
CompiledMethod* claim_postponed_nmethod() { |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3675 |
CompiledMethod* claim; |
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3676 |
CompiledMethod* next; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3677 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3678 |
do { |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3679 |
claim = (CompiledMethod*)_postponed_list; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3680 |
if (claim == NULL) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3681 |
return NULL; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3682 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3683 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3684 |
next = claim->unloading_next(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3685 |
|
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3686 |
} while ((CompiledMethod*)Atomic::cmpxchg_ptr(next, &_postponed_list, claim) != claim); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3687 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3688 |
return claim; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3689 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3690 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3691 |
public: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3692 |
// Mark that we're done with the first pass of nmethod cleaning. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3693 |
void barrier_mark(uint worker_id) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3694 |
MonitorLockerEx ml(_lock, Mutex::_no_safepoint_check_flag); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3695 |
_num_entered_barrier++; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3696 |
if (_num_entered_barrier == _num_workers) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3697 |
ml.notify_all(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3698 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3699 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3700 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3701 |
// See if we have to wait for the other workers to |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3702 |
// finish their first-pass nmethod cleaning work. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3703 |
void barrier_wait(uint worker_id) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3704 |
if (_num_entered_barrier < _num_workers) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3705 |
MonitorLockerEx ml(_lock, Mutex::_no_safepoint_check_flag); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3706 |
while (_num_entered_barrier < _num_workers) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3707 |
ml.wait(Mutex::_no_safepoint_check_flag, 0, false); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3708 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3709 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3710 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3711 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3712 |
// Cleaning and unloading of nmethods. Some work has to be postponed |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3713 |
// to the second pass, when we know which nmethods survive. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3714 |
void work_first_pass(uint worker_id) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3715 |
// The first nmethods is claimed by the first worker. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3716 |
if (worker_id == 0 && _first_nmethod != NULL) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3717 |
clean_nmethod(_first_nmethod); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3718 |
_first_nmethod = NULL; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3719 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3720 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3721 |
int num_claimed_nmethods; |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3722 |
CompiledMethod* claimed_nmethods[MaxClaimNmethods]; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3723 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3724 |
while (true) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3725 |
claim_nmethods(claimed_nmethods, &num_claimed_nmethods); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3726 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3727 |
if (num_claimed_nmethods == 0) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3728 |
break; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3729 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3730 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3731 |
for (int i = 0; i < num_claimed_nmethods; i++) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3732 |
clean_nmethod(claimed_nmethods[i]); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3733 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3734 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3735 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3736 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3737 |
void work_second_pass(uint worker_id) { |
38133
78b95467b9f1
8151956: Support non-continuous CodeBlobs in HotSpot
rbackman
parents:
37988
diff
changeset
|
3738 |
CompiledMethod* nm; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3739 |
// Take care of postponed nmethods. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3740 |
while ((nm = claim_postponed_nmethod()) != NULL) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3741 |
clean_nmethod_postponed(nm); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3742 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3743 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3744 |
}; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3745 |
|
28163
322d55d167be
8047290: Make Mutex::_no_safepoint_check_flag locks verify that this lock never checks for safepoint
coleenp
parents:
27905
diff
changeset
|
3746 |
Monitor* G1CodeCacheUnloadingTask::_lock = new Monitor(Mutex::leaf, "Code Cache Unload lock", false, Monitor::_safepoint_check_never); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3747 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3748 |
class G1KlassCleaningTask : public StackObj { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3749 |
BoolObjectClosure* _is_alive; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3750 |
volatile jint _clean_klass_tree_claimed; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3751 |
ClassLoaderDataGraphKlassIteratorAtomic _klass_iterator; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3752 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3753 |
public: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3754 |
G1KlassCleaningTask(BoolObjectClosure* is_alive) : |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3755 |
_is_alive(is_alive), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3756 |
_clean_klass_tree_claimed(0), |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3757 |
_klass_iterator() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3758 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3759 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3760 |
private: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3761 |
bool claim_clean_klass_tree_task() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3762 |
if (_clean_klass_tree_claimed) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3763 |
return false; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3764 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3765 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3766 |
return Atomic::cmpxchg(1, (jint*)&_clean_klass_tree_claimed, 0) == 0; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3767 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3768 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3769 |
InstanceKlass* claim_next_klass() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3770 |
Klass* klass; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3771 |
do { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3772 |
klass =_klass_iterator.next_klass(); |
33611
9abd65805e19
8139203: Consistent naming for klass type predicates
coleenp
parents:
33602
diff
changeset
|
3773 |
} while (klass != NULL && !klass->is_instance_klass()); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3774 |
|
33602 | 3775 |
// this can be null so don't call InstanceKlass::cast |
3776 |
return static_cast<InstanceKlass*>(klass); |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3777 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3778 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3779 |
public: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3780 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3781 |
void clean_klass(InstanceKlass* ik) { |
33576
6dbde58b08a6
8058563: InstanceKlass::_dependencies list isn't cleared from empty nmethodBucket entries
stefank
parents:
33230
diff
changeset
|
3782 |
ik->clean_weak_instanceklass_links(_is_alive); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3783 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3784 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3785 |
void work() { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3786 |
ResourceMark rm; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3787 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3788 |
// One worker will clean the subklass/sibling klass tree. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3789 |
if (claim_clean_klass_tree_task()) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3790 |
Klass::clean_subklass_tree(_is_alive); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3791 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3792 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3793 |
// All workers will help cleaning the classes, |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3794 |
InstanceKlass* klass; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3795 |
while ((klass = claim_next_klass()) != NULL) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3796 |
clean_klass(klass); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3797 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3798 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3799 |
}; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3800 |
|
46505
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3801 |
class G1ResolvedMethodCleaningTask : public StackObj { |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3802 |
BoolObjectClosure* _is_alive; |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3803 |
volatile jint _resolved_method_task_claimed; |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3804 |
public: |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3805 |
G1ResolvedMethodCleaningTask(BoolObjectClosure* is_alive) : |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3806 |
_is_alive(is_alive), _resolved_method_task_claimed(0) {} |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3807 |
|
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3808 |
bool claim_resolved_method_task() { |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3809 |
if (_resolved_method_task_claimed) { |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3810 |
return false; |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3811 |
} |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3812 |
return Atomic::cmpxchg(1, (jint*)&_resolved_method_task_claimed, 0) == 0; |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3813 |
} |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3814 |
|
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3815 |
// These aren't big, one thread can do it all. |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3816 |
void work() { |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3817 |
if (claim_resolved_method_task()) { |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3818 |
ResolvedMethodTable::unlink(_is_alive); |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3819 |
} |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3820 |
} |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3821 |
}; |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3822 |
|
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3823 |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3824 |
// To minimize the remark pause times, the tasks below are done in parallel. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3825 |
class G1ParallelCleaningTask : public AbstractGangTask { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3826 |
private: |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3827 |
G1StringAndSymbolCleaningTask _string_symbol_task; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3828 |
G1CodeCacheUnloadingTask _code_cache_task; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3829 |
G1KlassCleaningTask _klass_cleaning_task; |
46505
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3830 |
G1ResolvedMethodCleaningTask _resolved_method_cleaning_task; |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3831 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3832 |
public: |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3833 |
// The constructor is run in the VMThread. |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3834 |
G1ParallelCleaningTask(BoolObjectClosure* is_alive, uint num_workers, bool unloading_occurred) : |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3835 |
AbstractGangTask("Parallel Cleaning"), |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3836 |
_string_symbol_task(is_alive, true, true, G1StringDedup::is_enabled()), |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3837 |
_code_cache_task(num_workers, is_alive, unloading_occurred), |
46505
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3838 |
_klass_cleaning_task(is_alive), |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3839 |
_resolved_method_cleaning_task(is_alive) { |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3840 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3841 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3842 |
// The parallel work done by all worker threads. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3843 |
void work(uint worker_id) { |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3844 |
// Do first pass of code cache cleaning. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3845 |
_code_cache_task.work_first_pass(worker_id); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3846 |
|
25500 | 3847 |
// Let the threads mark that the first pass is done. |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3848 |
_code_cache_task.barrier_mark(worker_id); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3849 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3850 |
// Clean the Strings and Symbols. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3851 |
_string_symbol_task.work(worker_id); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3852 |
|
46505
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3853 |
// Clean unreferenced things in the ResolvedMethodTable |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3854 |
_resolved_method_cleaning_task.work(); |
fd4bc78630b1
8174749: Use hash table/oops for MemberName table
coleenp
parents:
46457
diff
changeset
|
3855 |
|
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3856 |
// Wait for all workers to finish the first code cache cleaning pass. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3857 |
_code_cache_task.barrier_wait(worker_id); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3858 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3859 |
// Do the second code cache cleaning work, which realize on |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3860 |
// the liveness information gathered during the first pass. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3861 |
_code_cache_task.work_second_pass(worker_id); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3862 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3863 |
// Clean all klasses that were not unloaded. |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3864 |
_klass_cleaning_task.work(); |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3865 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3866 |
}; |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3867 |
|
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3868 |
|
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3869 |
void G1CollectedHeap::complete_cleaning(BoolObjectClosure* is_alive, |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3870 |
bool class_unloading_occurred) { |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3871 |
uint n_workers = workers()->active_workers(); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3872 |
|
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3873 |
G1ParallelCleaningTask g1_unlink_task(is_alive, n_workers, class_unloading_occurred); |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3874 |
workers()->run_task(&g1_unlink_task); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3875 |
} |
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
3876 |
|
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3877 |
void G1CollectedHeap::partial_cleaning(BoolObjectClosure* is_alive, |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3878 |
bool process_strings, |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3879 |
bool process_symbols, |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3880 |
bool process_string_dedup) { |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3881 |
if (!process_strings && !process_symbols && !process_string_dedup) { |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3882 |
// Nothing to clean. |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3883 |
return; |
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3884 |
} |
46348
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3885 |
|
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3886 |
G1StringAndSymbolCleaningTask g1_unlink_task(is_alive, process_strings, process_symbols, process_string_dedup); |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3887 |
workers()->run_task(&g1_unlink_task); |
5803de68c14d
8171238: Unify cleanup code used in G1 Remark and Full GC marking
sjohanss
parents:
46347
diff
changeset
|
3888 |
|
22545
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3889 |
} |
b93a7f0e9b9d
8027476: Improve performance of Stringtable unlink
tschatzl
parents:
22203
diff
changeset
|
3890 |
|
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3891 |
class G1RedirtyLoggedCardsTask : public AbstractGangTask { |
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3892 |
private: |
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3893 |
DirtyCardQueueSet* _queue; |
34613
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3894 |
G1CollectedHeap* _g1h; |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3895 |
public: |
34613
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3896 |
G1RedirtyLoggedCardsTask(DirtyCardQueueSet* queue, G1CollectedHeap* g1h) : AbstractGangTask("Redirty Cards"), |
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3897 |
_queue(queue), _g1h(g1h) { } |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3898 |
|
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3899 |
virtual void work(uint worker_id) { |
34613
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3900 |
G1GCPhaseTimes* phase_times = _g1h->g1_policy()->phase_times(); |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
3901 |
G1GCParPhaseTimesTracker x(phase_times, G1GCPhaseTimes::RedirtyCards, worker_id); |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3902 |
|
34613
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3903 |
RedirtyLoggedCardTableEntryClosure cl(_g1h); |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3904 |
_queue->par_apply_closure_to_all_completed_buffers(&cl); |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3905 |
|
34613
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3906 |
phase_times->record_thread_work_item(G1GCPhaseTimes::RedirtyCards, worker_id, cl.num_dirtied()); |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3907 |
} |
23454
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3908 |
}; |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3909 |
|
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3910 |
void G1CollectedHeap::redirty_logged_cards() { |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3911 |
double redirty_logged_cards_start = os::elapsedTime(); |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3912 |
|
34613
bb8d0781175e
8142402: G1 should not redirty cards in free regions
ehelin
parents:
34314
diff
changeset
|
3913 |
G1RedirtyLoggedCardsTask redirty_task(&dirty_card_queue_set(), this); |
24104
febf9363fb68
8019342: G1: High "Other" time most likely due to card redirtying
tschatzl
parents:
24103
diff
changeset
|
3914 |
dirty_card_queue_set().reset_for_par_iteration(); |
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
3915 |
workers()->run_task(&redirty_task); |
23454
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3916 |
|
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3917 |
DirtyCardQueueSet& dcq = JavaThread::dirty_card_queue_set(); |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3918 |
dcq.merge_bufferlists(&dirty_card_queue_set()); |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3919 |
assert(dirty_card_queue_set().completed_buffers_num() == 0, "All should be consumed"); |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3920 |
|
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3921 |
g1_policy()->phase_times()->record_redirty_logged_cards_time_ms((os::elapsedTime() - redirty_logged_cards_start) * 1000.0); |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3922 |
} |
13a3b426f64d
8035398: Add card redirty time in "Other" time in G1
tschatzl
parents:
23453
diff
changeset
|
3923 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3924 |
// Weak Reference Processing support |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3925 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3926 |
// An always "is_alive" closure that is used to preserve referents. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3927 |
// If the object is non-null then it's alive. Used in the preservation |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3928 |
// of referent objects that are pointed to by reference objects |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3929 |
// discovered by the CM ref processor. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3930 |
class G1AlwaysAliveClosure: public BoolObjectClosure { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3931 |
G1CollectedHeap* _g1; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3932 |
public: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3933 |
G1AlwaysAliveClosure(G1CollectedHeap* g1) : _g1(g1) {} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3934 |
bool do_object_b(oop p) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3935 |
if (p != NULL) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3936 |
return true; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3937 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3938 |
return false; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3939 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3940 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3941 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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|
3942 |
bool G1STWIsAliveClosure::do_object_b(oop p) { |
4ea0e7d2ffbc
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changeset
|
3943 |
// An object is reachable if it is outside the collection set, |
4ea0e7d2ffbc
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changeset
|
3944 |
// or is inside and copied. |
32185
49a57ff2c3cb
8073052: Rename and clean up the allocation manager hierarchy in g1Allocator.?pp
tschatzl
parents:
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diff
changeset
|
3945 |
return !_g1->is_in_cset(p) || p->is_forwarded(); |
10670
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changeset
|
3946 |
} |
4ea0e7d2ffbc
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parents:
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changeset
|
3947 |
|
4ea0e7d2ffbc
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parents:
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changeset
|
3948 |
// Non Copying Keep Alive closure |
4ea0e7d2ffbc
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parents:
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changeset
|
3949 |
class G1KeepAliveClosure: public OopClosure { |
4ea0e7d2ffbc
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changeset
|
3950 |
G1CollectedHeap* _g1; |
4ea0e7d2ffbc
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changeset
|
3951 |
public: |
4ea0e7d2ffbc
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parents:
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changeset
|
3952 |
G1KeepAliveClosure(G1CollectedHeap* g1) : _g1(g1) {} |
4ea0e7d2ffbc
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changeset
|
3953 |
void do_oop(narrowOop* p) { guarantee(false, "Not needed"); } |
25889
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parents:
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changeset
|
3954 |
void do_oop(oop* p) { |
10670
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parents:
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changeset
|
3955 |
oop obj = *p; |
26692
b24a4cc794ce
8057799: Unnecessary NULL check in G1KeepAliveClosure
tonyp
parents:
26422
diff
changeset
|
3956 |
assert(obj != NULL, "the caller should have filtered out NULL values"); |
10670
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parents:
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changeset
|
3957 |
|
28213
b0bf57cd1e9d
8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
tschatzl
parents:
28212
diff
changeset
|
3958 |
const InCSetState cset_state = _g1->in_cset_state(obj); |
b0bf57cd1e9d
8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
tschatzl
parents:
28212
diff
changeset
|
3959 |
if (!cset_state.is_in_cset_or_humongous()) { |
25889
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parents:
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changeset
|
3960 |
return; |
221296ac4359
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parents:
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diff
changeset
|
3961 |
} |
28213
b0bf57cd1e9d
8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
tschatzl
parents:
28212
diff
changeset
|
3962 |
if (cset_state.is_in_cset()) { |
10670
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changeset
|
3963 |
assert( obj->is_forwarded(), "invariant" ); |
4ea0e7d2ffbc
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changeset
|
3964 |
*p = obj->forwardee(); |
25889
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parents:
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changeset
|
3965 |
} else { |
221296ac4359
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parents:
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diff
changeset
|
3966 |
assert(!obj->is_forwarded(), "invariant" ); |
28213
b0bf57cd1e9d
8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
tschatzl
parents:
28212
diff
changeset
|
3967 |
assert(cset_state.is_humongous(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
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diff
changeset
|
3968 |
"Only allowed InCSet state is IsHumongous, but is %d", cset_state.value()); |
25889
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changeset
|
3969 |
_g1->set_humongous_is_live(obj); |
10670
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parents:
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changeset
|
3970 |
} |
4ea0e7d2ffbc
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parents:
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diff
changeset
|
3971 |
} |
4ea0e7d2ffbc
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parents:
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changeset
|
3972 |
}; |
4ea0e7d2ffbc
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parents:
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diff
changeset
|
3973 |
|
4ea0e7d2ffbc
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parents:
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changeset
|
3974 |
// Copying Keep Alive closure - can be called from both |
4ea0e7d2ffbc
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parents:
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changeset
|
3975 |
// serial and parallel code as long as different worker |
4ea0e7d2ffbc
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parents:
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changeset
|
3976 |
// threads utilize different G1ParScanThreadState instances |
4ea0e7d2ffbc
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johnc
parents:
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diff
changeset
|
3977 |
// and different queues. |
4ea0e7d2ffbc
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parents:
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diff
changeset
|
3978 |
|
4ea0e7d2ffbc
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parents:
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changeset
|
3979 |
class G1CopyingKeepAliveClosure: public OopClosure { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
3980 |
G1CollectedHeap* _g1h; |
4ea0e7d2ffbc
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johnc
parents:
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changeset
|
3981 |
OopClosure* _copy_non_heap_obj_cl; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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changeset
|
3982 |
G1ParScanThreadState* _par_scan_state; |
4ea0e7d2ffbc
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johnc
parents:
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diff
changeset
|
3983 |
|
4ea0e7d2ffbc
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johnc
parents:
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diff
changeset
|
3984 |
public: |
4ea0e7d2ffbc
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johnc
parents:
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diff
changeset
|
3985 |
G1CopyingKeepAliveClosure(G1CollectedHeap* g1h, |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
3986 |
OopClosure* non_heap_obj_cl, |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3987 |
G1ParScanThreadState* pss): |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
3988 |
_g1h(g1h), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3989 |
_copy_non_heap_obj_cl(non_heap_obj_cl), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3990 |
_par_scan_state(pss) |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3991 |
{} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3992 |
|
4ea0e7d2ffbc
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johnc
parents:
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diff
changeset
|
3993 |
virtual void do_oop(narrowOop* p) { do_oop_work(p); } |
4ea0e7d2ffbc
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johnc
parents:
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diff
changeset
|
3994 |
virtual void do_oop( oop* p) { do_oop_work(p); } |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3995 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3996 |
template <class T> void do_oop_work(T* p) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
3997 |
oop obj = oopDesc::load_decode_heap_oop(p); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
3998 |
|
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
3999 |
if (_g1h->is_in_cset_or_humongous(obj)) { |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4000 |
// If the referent object has been forwarded (either copied |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4001 |
// to a new location or to itself in the event of an |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4002 |
// evacuation failure) then we need to update the reference |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4003 |
// field and, if both reference and referent are in the G1 |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4004 |
// heap, update the RSet for the referent. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4005 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4006 |
// If the referent has not been forwarded then we have to keep |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4007 |
// it alive by policy. Therefore we have copy the referent. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4008 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4009 |
// If the reference field is in the G1 heap then we can push |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4010 |
// on the PSS queue. When the queue is drained (after each |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4011 |
// phase of reference processing) the object and it's followers |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4012 |
// will be copied, the reference field set to point to the |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4013 |
// new location, and the RSet updated. Otherwise we need to |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13517
diff
changeset
|
4014 |
// use the the non-heap or metadata closures directly to copy |
18025 | 4015 |
// the referent object and update the pointer, while avoiding |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4016 |
// updating the RSet. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4017 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4018 |
if (_g1h->is_in_g1_reserved(p)) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4019 |
_par_scan_state->push_on_queue(p); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4020 |
} else { |
24457
0e20b36df5c4
8038212: Method::is_valid_method() check has performance regression impact for stackwalking
coleenp
parents:
24429
diff
changeset
|
4021 |
assert(!Metaspace::contains((const void*)p), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
4022 |
"Unexpectedly found a pointer from metadata: " PTR_FORMAT, p2i(p)); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4023 |
_copy_non_heap_obj_cl->do_oop(p); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4024 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4025 |
} |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4026 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4027 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4028 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4029 |
// Serial drain queue closure. Called as the 'complete_gc' |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4030 |
// closure for each discovered list in some of the |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4031 |
// reference processing phases. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4032 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4033 |
class G1STWDrainQueueClosure: public VoidClosure { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4034 |
protected: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4035 |
G1CollectedHeap* _g1h; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4036 |
G1ParScanThreadState* _par_scan_state; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4037 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4038 |
G1ParScanThreadState* par_scan_state() { return _par_scan_state; } |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4039 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4040 |
public: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4041 |
G1STWDrainQueueClosure(G1CollectedHeap* g1h, G1ParScanThreadState* pss) : |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4042 |
_g1h(g1h), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4043 |
_par_scan_state(pss) |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4044 |
{ } |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4045 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4046 |
void do_void() { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4047 |
G1ParScanThreadState* const pss = par_scan_state(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4048 |
pss->trim_queue(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4049 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4050 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4051 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4052 |
// Parallel Reference Processing closures |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4053 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4054 |
// Implementation of AbstractRefProcTaskExecutor for parallel reference |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4055 |
// processing during G1 evacuation pauses. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4056 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4057 |
class G1STWRefProcTaskExecutor: public AbstractRefProcTaskExecutor { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4058 |
private: |
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4059 |
G1CollectedHeap* _g1h; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4060 |
G1ParScanThreadStateSet* _pss; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4061 |
RefToScanQueueSet* _queues; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4062 |
WorkGang* _workers; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4063 |
uint _active_workers; |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4064 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4065 |
public: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4066 |
G1STWRefProcTaskExecutor(G1CollectedHeap* g1h, |
32736
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8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
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parents:
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diff
changeset
|
4067 |
G1ParScanThreadStateSet* per_thread_states, |
32360 | 4068 |
WorkGang* workers, |
30585 | 4069 |
RefToScanQueueSet *task_queues, |
4070 |
uint n_workers) : |
|
10670
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parents:
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changeset
|
4071 |
_g1h(g1h), |
32381
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8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
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changeset
|
4072 |
_pss(per_thread_states), |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4073 |
_queues(task_queues), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4074 |
_workers(workers), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4075 |
_active_workers(n_workers) |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4076 |
{ |
37165
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4077 |
g1h->ref_processor_stw()->set_active_mt_degree(n_workers); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4078 |
} |
4ea0e7d2ffbc
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parents:
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diff
changeset
|
4079 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4080 |
// Executes the given task using concurrent marking worker threads. |
4ea0e7d2ffbc
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changeset
|
4081 |
virtual void execute(ProcessTask& task); |
4ea0e7d2ffbc
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changeset
|
4082 |
virtual void execute(EnqueueTask& task); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4083 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4084 |
|
4ea0e7d2ffbc
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parents:
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diff
changeset
|
4085 |
// Gang task for possibly parallel reference processing |
4ea0e7d2ffbc
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parents:
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diff
changeset
|
4086 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4087 |
class G1STWRefProcTaskProxy: public AbstractGangTask { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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changeset
|
4088 |
typedef AbstractRefProcTaskExecutor::ProcessTask ProcessTask; |
4ea0e7d2ffbc
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changeset
|
4089 |
ProcessTask& _proc_task; |
4ea0e7d2ffbc
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parents:
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changeset
|
4090 |
G1CollectedHeap* _g1h; |
32736
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8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
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diff
changeset
|
4091 |
G1ParScanThreadStateSet* _pss; |
32381
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8040162: Avoid reallocating PLABs between GC phases in G1
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parents:
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changeset
|
4092 |
RefToScanQueueSet* _task_queues; |
10670
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changeset
|
4093 |
ParallelTaskTerminator* _terminator; |
4ea0e7d2ffbc
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parents:
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diff
changeset
|
4094 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4095 |
public: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4096 |
G1STWRefProcTaskProxy(ProcessTask& proc_task, |
32381
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8040162: Avoid reallocating PLABs between GC phases in G1
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parents:
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changeset
|
4097 |
G1CollectedHeap* g1h, |
32736
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8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
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diff
changeset
|
4098 |
G1ParScanThreadStateSet* per_thread_states, |
32381
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8040162: Avoid reallocating PLABs between GC phases in G1
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parents:
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changeset
|
4099 |
RefToScanQueueSet *task_queues, |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
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parents:
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changeset
|
4100 |
ParallelTaskTerminator* terminator) : |
10670
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6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4101 |
AbstractGangTask("Process reference objects in parallel"), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4102 |
_proc_task(proc_task), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4103 |
_g1h(g1h), |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
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diff
changeset
|
4104 |
_pss(per_thread_states), |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4105 |
_task_queues(task_queues), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4106 |
_terminator(terminator) |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4107 |
{} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4108 |
|
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4109 |
virtual void work(uint worker_id) { |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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changeset
|
4110 |
// The reference processing task executed by a single worker. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4111 |
ResourceMark rm; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4112 |
HandleMark hm; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4113 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4114 |
G1STWIsAliveClosure is_alive(_g1h); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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changeset
|
4115 |
|
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4116 |
G1ParScanThreadState* pss = _pss->state_for_worker(worker_id); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
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diff
changeset
|
4117 |
pss->set_ref_processor(NULL); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
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diff
changeset
|
4118 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4119 |
// Keep alive closure. |
33213
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
4120 |
G1CopyingKeepAliveClosure keep_alive(_g1h, pss->closures()->raw_strong_oops(), pss); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4121 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4122 |
// Complete GC closure |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
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diff
changeset
|
4123 |
G1ParEvacuateFollowersClosure drain_queue(_g1h, pss, _task_queues, _terminator); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4124 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4125 |
// Call the reference processing task's work routine. |
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4126 |
_proc_task.work(worker_id, is_alive, keep_alive, drain_queue); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4127 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4128 |
// Note we cannot assert that the refs array is empty here as not all |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4129 |
// of the processing tasks (specifically phase2 - pp2_work) execute |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4130 |
// the complete_gc closure (which ordinarily would drain the queue) so |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4131 |
// the queue may not be empty. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4132 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4133 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4134 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4135 |
// Driver routine for parallel reference processing. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4136 |
// Creates an instance of the ref processing gang |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4137 |
// task and has the worker threads execute it. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4138 |
void G1STWRefProcTaskExecutor::execute(ProcessTask& proc_task) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4139 |
assert(_workers != NULL, "Need parallel worker threads."); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4140 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4141 |
ParallelTaskTerminator terminator(_active_workers, _queues); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4142 |
G1STWRefProcTaskProxy proc_task_proxy(proc_task, _g1h, _pss, _queues, &terminator); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4143 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4144 |
_workers->run_task(&proc_task_proxy); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4145 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4146 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4147 |
// Gang task for parallel reference enqueueing. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4148 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4149 |
class G1STWRefEnqueueTaskProxy: public AbstractGangTask { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4150 |
typedef AbstractRefProcTaskExecutor::EnqueueTask EnqueueTask; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4151 |
EnqueueTask& _enq_task; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4152 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4153 |
public: |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4154 |
G1STWRefEnqueueTaskProxy(EnqueueTask& enq_task) : |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4155 |
AbstractGangTask("Enqueue reference objects in parallel"), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4156 |
_enq_task(enq_task) |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4157 |
{ } |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4158 |
|
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4159 |
virtual void work(uint worker_id) { |
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4160 |
_enq_task.work(worker_id); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4161 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4162 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4163 |
|
18025 | 4164 |
// Driver routine for parallel reference enqueueing. |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4165 |
// Creates an instance of the ref enqueueing gang |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4166 |
// task and has the worker threads execute it. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4167 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4168 |
void G1STWRefProcTaskExecutor::execute(EnqueueTask& enq_task) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4169 |
assert(_workers != NULL, "Need parallel worker threads."); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4170 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4171 |
G1STWRefEnqueueTaskProxy enq_task_proxy(enq_task); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4172 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4173 |
_workers->run_task(&enq_task_proxy); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4174 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4175 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4176 |
// End of weak reference support closures |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4177 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4178 |
// Abstract task used to preserve (i.e. copy) any referent objects |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4179 |
// that are in the collection set and are pointed to by reference |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4180 |
// objects discovered by the CM ref processor. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4181 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4182 |
class G1ParPreserveCMReferentsTask: public AbstractGangTask { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4183 |
protected: |
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4184 |
G1CollectedHeap* _g1h; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4185 |
G1ParScanThreadStateSet* _pss; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4186 |
RefToScanQueueSet* _queues; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4187 |
ParallelTaskTerminator _terminator; |
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4188 |
uint _n_workers; |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4189 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4190 |
public: |
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4191 |
G1ParPreserveCMReferentsTask(G1CollectedHeap* g1h, G1ParScanThreadStateSet* per_thread_states, int workers, RefToScanQueueSet *task_queues) : |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
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parents:
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diff
changeset
|
4192 |
AbstractGangTask("ParPreserveCMReferents"), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
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diff
changeset
|
4193 |
_g1h(g1h), |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4194 |
_pss(per_thread_states), |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4195 |
_queues(task_queues), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4196 |
_terminator(workers, _queues), |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4197 |
_n_workers(workers) |
37165
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4198 |
{ |
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4199 |
g1h->ref_processor_cm()->set_active_mt_degree(workers); |
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4200 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4201 |
|
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4202 |
void work(uint worker_id) { |
36367
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4203 |
G1GCParPhaseTimesTracker x(_g1h->g1_policy()->phase_times(), G1GCPhaseTimes::PreserveCMReferents, worker_id); |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4204 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4205 |
ResourceMark rm; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4206 |
HandleMark hm; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4207 |
|
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4208 |
G1ParScanThreadState* pss = _pss->state_for_worker(worker_id); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4209 |
pss->set_ref_processor(NULL); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4210 |
assert(pss->queue_is_empty(), "both queue and overflow should be empty"); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4211 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4212 |
// Is alive closure |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4213 |
G1AlwaysAliveClosure always_alive(_g1h); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4214 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4215 |
// Copying keep alive closure. Applied to referent objects that need |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4216 |
// to be copied. |
33213
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
4217 |
G1CopyingKeepAliveClosure keep_alive(_g1h, pss->closures()->raw_strong_oops(), pss); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4218 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4219 |
ReferenceProcessor* rp = _g1h->ref_processor_cm(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4220 |
|
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4221 |
uint limit = ReferenceProcessor::number_of_subclasses_of_ref() * rp->max_num_q(); |
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4222 |
uint stride = MIN2(MAX2(_n_workers, 1U), limit); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4223 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4224 |
// limit is set using max_num_q() - which was set using ParallelGCThreads. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4225 |
// So this must be true - but assert just in case someone decides to |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4226 |
// change the worker ids. |
29580
a67a581cfe11
8073315: Enable gcc -Wtype-limits and fix upcoming issues.
goetz
parents:
29470
diff
changeset
|
4227 |
assert(worker_id < limit, "sanity"); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4228 |
assert(!rp->discovery_is_atomic(), "check this code"); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4229 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4230 |
// Select discovered lists [i, i+stride, i+2*stride,...,limit) |
11396
917d8673b5ef
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
11250
diff
changeset
|
4231 |
for (uint idx = worker_id; idx < limit; idx += stride) { |
10747
dfdb9eb56e49
7095243: Disambiguate ReferenceProcessor::_discoveredSoftRefs
johnc
parents:
10746
diff
changeset
|
4232 |
DiscoveredList& ref_list = rp->discovered_refs()[idx]; |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4233 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4234 |
DiscoveredListIterator iter(ref_list, &keep_alive, &always_alive); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4235 |
while (iter.has_next()) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4236 |
// Since discovery is not atomic for the CM ref processor, we |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4237 |
// can see some null referent objects. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4238 |
iter.load_ptrs(DEBUG_ONLY(true)); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4239 |
oop ref = iter.obj(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4240 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4241 |
// This will filter nulls. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4242 |
if (iter.is_referent_alive()) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4243 |
iter.make_referent_alive(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4244 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4245 |
iter.move_to_next(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4246 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4247 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4248 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4249 |
// Drain the queue - which may cause stealing |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4250 |
G1ParEvacuateFollowersClosure drain_queue(_g1h, pss, _queues, &_terminator); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4251 |
drain_queue.do_void(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4252 |
// Allocation buffers were retired at the end of G1ParEvacuateFollowersClosure |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4253 |
assert(pss->queue_is_empty(), "should be"); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4254 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4255 |
}; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4256 |
|
34310
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4257 |
void G1CollectedHeap::process_weak_jni_handles() { |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4258 |
double ref_proc_start = os::elapsedTime(); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4259 |
|
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4260 |
G1STWIsAliveClosure is_alive(this); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4261 |
G1KeepAliveClosure keep_alive(this); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4262 |
JNIHandles::weak_oops_do(&is_alive, &keep_alive); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4263 |
|
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4264 |
double ref_proc_time = os::elapsedTime() - ref_proc_start; |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4265 |
g1_policy()->phase_times()->record_ref_proc_time(ref_proc_time * 1000.0); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4266 |
} |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4267 |
|
36367
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4268 |
void G1CollectedHeap::preserve_cm_referents(G1ParScanThreadStateSet* per_thread_states) { |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4269 |
// Any reference objects, in the collection set, that were 'discovered' |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4270 |
// by the CM ref processor should have already been copied (either by |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4271 |
// applying the external root copy closure to the discovered lists, or |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4272 |
// by following an RSet entry). |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4273 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4274 |
// But some of the referents, that are in the collection set, that these |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4275 |
// reference objects point to may not have been copied: the STW ref |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4276 |
// processor would have seen that the reference object had already |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4277 |
// been 'discovered' and would have skipped discovering the reference, |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4278 |
// but would not have treated the reference object as a regular oop. |
18025 | 4279 |
// As a result the copy closure would not have been applied to the |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4280 |
// referent object. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4281 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4282 |
// We need to explicitly copy these referent objects - the references |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4283 |
// will be processed at the end of remarking. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4284 |
// |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4285 |
// We also need to do this copying before we process the reference |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4286 |
// objects discovered by the STW ref processor in case one of these |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4287 |
// referents points to another object which is also referenced by an |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4288 |
// object discovered by the STW ref processor. |
37494
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4289 |
double preserve_cm_referents_time = 0.0; |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4290 |
|
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4291 |
// To avoid spawning task when there is no work to do, check that |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4292 |
// a concurrent cycle is active and that some references have been |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4293 |
// discovered. |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4294 |
if (concurrent_mark()->cmThread()->during_cycle() && |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4295 |
ref_processor_cm()->has_discovered_references()) { |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4296 |
double preserve_cm_referents_start = os::elapsedTime(); |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4297 |
uint no_of_gc_workers = workers()->active_workers(); |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4298 |
G1ParPreserveCMReferentsTask keep_cm_referents(this, |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4299 |
per_thread_states, |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4300 |
no_of_gc_workers, |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4301 |
_task_queues); |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4302 |
workers()->run_task(&keep_cm_referents); |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4303 |
preserve_cm_referents_time = os::elapsedTime() - preserve_cm_referents_start; |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4304 |
} |
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4305 |
|
bf6caf8e99cb
8153745: Avoid spawning G1ParPreserveCMReferentsTask when there is no work to be done
sjohanss
parents:
37474
diff
changeset
|
4306 |
g1_policy()->phase_times()->record_preserve_cm_referents_time_ms(preserve_cm_referents_time * 1000.0); |
36367
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4307 |
} |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4308 |
|
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4309 |
// Weak Reference processing during an evacuation pause (part 1). |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4310 |
void G1CollectedHeap::process_discovered_references(G1ParScanThreadStateSet* per_thread_states) { |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4311 |
double ref_proc_start = os::elapsedTime(); |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4312 |
|
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4313 |
ReferenceProcessor* rp = _ref_processor_stw; |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4314 |
assert(rp->discovery_enabled(), "should have been enabled"); |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4315 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4316 |
// Closure to test whether a referent is alive. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4317 |
G1STWIsAliveClosure is_alive(this); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4318 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4319 |
// Even when parallel reference processing is enabled, the processing |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4320 |
// of JNI refs is serial and performed serially by the current thread |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4321 |
// rather than by a worker. The following PSS will be used for processing |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4322 |
// JNI refs. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4323 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4324 |
// Use only a single queue for this PSS. |
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4325 |
G1ParScanThreadState* pss = per_thread_states->state_for_worker(0); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4326 |
pss->set_ref_processor(NULL); |
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4327 |
assert(pss->queue_is_empty(), "pre-condition"); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4328 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4329 |
// Keep alive closure. |
33213
b937f634f56e
8138762: Refactor setup of evacuation closures in G1
mgerdin
parents:
33204
diff
changeset
|
4330 |
G1CopyingKeepAliveClosure keep_alive(this, pss->closures()->raw_strong_oops(), pss); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4331 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4332 |
// Serial Complete GC closure |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4333 |
G1STWDrainQueueClosure drain_queue(this, pss); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4334 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4335 |
// Setup the soft refs policy... |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4336 |
rp->setup_policy(false); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4337 |
|
18025 | 4338 |
ReferenceProcessorStats stats; |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4339 |
if (!rp->processing_is_mt()) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4340 |
// Serial reference processing... |
18025 | 4341 |
stats = rp->process_discovered_references(&is_alive, |
4342 |
&keep_alive, |
|
4343 |
&drain_queue, |
|
4344 |
NULL, |
|
33107
77bf0d2069a3
8134953: Make the GC ID available in a central place
brutisso
parents:
33105
diff
changeset
|
4345 |
_gc_timer_stw); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4346 |
} else { |
36367
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4347 |
uint no_of_gc_workers = workers()->active_workers(); |
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4348 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4349 |
// Parallel reference processing |
37165
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4350 |
assert(no_of_gc_workers <= rp->max_num_q(), |
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4351 |
"Mismatch between the number of GC workers %u and the maximum number of Reference process queues %u", |
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4352 |
no_of_gc_workers, rp->max_num_q()); |
13926 | 4353 |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4354 |
G1STWRefProcTaskExecutor par_task_executor(this, per_thread_states, workers(), _task_queues, no_of_gc_workers); |
18025 | 4355 |
stats = rp->process_discovered_references(&is_alive, |
4356 |
&keep_alive, |
|
4357 |
&drain_queue, |
|
4358 |
&par_task_executor, |
|
33107
77bf0d2069a3
8134953: Make the GC ID available in a central place
brutisso
parents:
33105
diff
changeset
|
4359 |
_gc_timer_stw); |
18025 | 4360 |
} |
4361 |
||
4362 |
_gc_tracer_stw->report_gc_reference_stats(stats); |
|
24103
956dc4aa4615
8028710: G1 does not retire allocation buffers after reference processing work
tschatzl
parents:
24100
diff
changeset
|
4363 |
|
956dc4aa4615
8028710: G1 does not retire allocation buffers after reference processing work
tschatzl
parents:
24100
diff
changeset
|
4364 |
// We have completed copying any necessary live referent objects. |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4365 |
assert(pss->queue_is_empty(), "both queue and overflow should be empty"); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4366 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4367 |
double ref_proc_time = os::elapsedTime() - ref_proc_start; |
13288
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
4368 |
g1_policy()->phase_times()->record_ref_proc_time(ref_proc_time * 1000.0); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4369 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4370 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4371 |
// Weak Reference processing during an evacuation pause (part 2). |
32736
755024a84282
8135152: Create a G1ParScanThreadStateSet class for managing G1 GC per thread states
mgerdin
parents:
32735
diff
changeset
|
4372 |
void G1CollectedHeap::enqueue_discovered_references(G1ParScanThreadStateSet* per_thread_states) { |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4373 |
double ref_enq_start = os::elapsedTime(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4374 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4375 |
ReferenceProcessor* rp = _ref_processor_stw; |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4376 |
assert(!rp->discovery_enabled(), "should have been disabled as part of processing"); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4377 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4378 |
// Now enqueue any remaining on the discovered lists on to |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4379 |
// the pending list. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4380 |
if (!rp->processing_is_mt()) { |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4381 |
// Serial reference processing... |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4382 |
rp->enqueue_discovered_references(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4383 |
} else { |
18025 | 4384 |
// Parallel reference enqueueing |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4385 |
|
30875 | 4386 |
uint n_workers = workers()->active_workers(); |
4387 |
||
37165
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4388 |
assert(n_workers <= rp->max_num_q(), |
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4389 |
"Mismatch between the number of GC workers %u and the maximum number of Reference process queues %u", |
ed7da23aaa16
8149343: assert(rp->num_q() == no_of_gc_workers) failed: sanity
jmasa
parents:
37159
diff
changeset
|
4390 |
n_workers, rp->max_num_q()); |
30875 | 4391 |
|
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4392 |
G1STWRefProcTaskExecutor par_task_executor(this, per_thread_states, workers(), _task_queues, n_workers); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4393 |
rp->enqueue_discovered_references(&par_task_executor); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4394 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4395 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4396 |
rp->verify_no_references_recorded(); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4397 |
assert(!rp->discovery_enabled(), "should have been disabled"); |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4398 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4399 |
// FIXME |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4400 |
// CM's reference processing also cleans up the string and symbol tables. |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4401 |
// Should we do that here also? We could, but it is a serial operation |
18025 | 4402 |
// and could significantly increase the pause time. |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4403 |
|
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4404 |
double ref_enq_time = os::elapsedTime() - ref_enq_start; |
13288
331d5b6725f3
7178361: G1: Make sure that PrintGC and PrintGCDetails use the same timing for the GC pause
brutisso
parents:
13113
diff
changeset
|
4405 |
g1_policy()->phase_times()->record_ref_enq_time(ref_enq_time * 1000.0); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4406 |
} |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4407 |
|
36368
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4408 |
void G1CollectedHeap::merge_per_thread_state_info(G1ParScanThreadStateSet* per_thread_states) { |
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4409 |
double merge_pss_time_start = os::elapsedTime(); |
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4410 |
per_thread_states->flush(); |
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4411 |
g1_policy()->phase_times()->record_merge_pss_time_ms((os::elapsedTime() - merge_pss_time_start) * 1000.0); |
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4412 |
} |
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4413 |
|
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4414 |
void G1CollectedHeap::pre_evacuate_collection_set() { |
11449
8abed3466567
7113006: G1: excessive ergo output when an evac failure happens
tonyp
parents:
11396
diff
changeset
|
4415 |
_expand_heap_after_alloc_failure = true; |
18025 | 4416 |
_evacuation_failed = false; |
1374 | 4417 |
|
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
17323
diff
changeset
|
4418 |
// Disable the hot card cache. |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
4419 |
_hot_card_cache->reset_hot_cache_claimed_index(); |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
4420 |
_hot_card_cache->set_use_cache(false); |
3589 | 4421 |
|
34313
31ee2fd5ae1d
8144075: Move prepare_for_oops_into_collection_set_do into pre_evacuate_collection_set
ehelin
parents:
34311
diff
changeset
|
4422 |
g1_rem_set()->prepare_for_oops_into_collection_set_do(); |
38081
a3bcb7197d45
8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
tonyp
parents:
38013
diff
changeset
|
4423 |
_preserved_marks_set.assert_empty(); |
42048
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4424 |
|
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4425 |
G1GCPhaseTimes* phase_times = g1_policy()->phase_times(); |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4426 |
|
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4427 |
// InitialMark needs claim bits to keep track of the marked-through CLDs. |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4428 |
if (collector_state()->during_initial_mark_pause()) { |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4429 |
double start_clear_claimed_marks = os::elapsedTime(); |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4430 |
|
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4431 |
ClassLoaderDataGraph::clear_claimed_marks(); |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4432 |
|
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4433 |
double recorded_clear_claimed_marks_time_ms = (os::elapsedTime() - start_clear_claimed_marks) * 1000.0; |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4434 |
phase_times->record_clear_claimed_marks_time_ms(recorded_clear_claimed_marks_time_ms); |
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4435 |
} |
46353
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4436 |
} |
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4437 |
|
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4438 |
void G1CollectedHeap::evacuate_collection_set(EvacuationInfo& evacuation_info, G1ParScanThreadStateSet* per_thread_states) { |
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4439 |
// Should G1EvacuationFailureALot be in effect for this GC? |
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4440 |
NOT_PRODUCT(set_evacuation_failure_alot_for_current_gc();) |
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4441 |
|
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4442 |
assert(dirty_card_queue_set().completed_buffers_num() == 0, "Should be empty"); |
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4443 |
|
1df99120f158
8176885: Clear Claimed Marks log message at wrong location in the log
tschatzl
parents:
46348
diff
changeset
|
4444 |
G1GCPhaseTimes* phase_times = g1_policy()->phase_times(); |
42048
c1f066b53dd7
8160055: Misplaced call to ClassLoaderDataGraph::clear_claimed_marks during initial mark
jprovino
parents:
41284
diff
changeset
|
4445 |
|
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4446 |
double start_par_time_sec = os::elapsedTime(); |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4447 |
double end_par_time_sec; |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4448 |
|
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4449 |
{ |
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4450 |
const uint n_workers = workers()->active_workers(); |
30868
c1b24f26deed
8080110: Remove usage of CollectedHeap::n_par_threads() from root processing
stefank
parents:
30770
diff
changeset
|
4451 |
G1RootProcessor root_processor(this, n_workers); |
32381
b750fd963056
8040162: Avoid reallocating PLABs between GC phases in G1
tschatzl
parents:
32380
diff
changeset
|
4452 |
G1ParTask g1_par_task(this, per_thread_states, _task_queues, &root_processor, n_workers); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4453 |
|
35061 | 4454 |
print_termination_stats_hdr(); |
30875 | 4455 |
|
27251
7d667f91ec8d
6979279: remove special-case code for ParallelGCThreads==0
mlarsson
parents:
27250
diff
changeset
|
4456 |
workers()->run_task(&g1_par_task); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4457 |
end_par_time_sec = os::elapsedTime(); |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4458 |
|
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4459 |
// Closing the inner scope will execute the destructor |
29693
fac175f7a466
8075210: Refactor strong root processing in order to allow G1 to evolve separately from GenCollectedHeap
mgerdin
parents:
29687
diff
changeset
|
4460 |
// for the G1RootProcessor object. We record the current |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4461 |
// elapsed time before closing the scope so that time |
29693
fac175f7a466
8075210: Refactor strong root processing in order to allow G1 to evolve separately from GenCollectedHeap
mgerdin
parents:
29687
diff
changeset
|
4462 |
// taken for the destructor is NOT included in the |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4463 |
// reported parallel time. |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4464 |
} |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4465 |
|
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4466 |
double par_time_ms = (end_par_time_sec - start_par_time_sec) * 1000.0; |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
4467 |
phase_times->record_par_time(par_time_ms); |
12270
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4468 |
|
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4469 |
double code_root_fixup_time_ms = |
9625585c6047
7143511: G1: Another instance of high GC Worker Other time (50ms)
johnc
parents:
12227
diff
changeset
|
4470 |
(os::elapsedTime() - end_par_time_sec) * 1000.0; |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
4471 |
phase_times->record_code_root_fixup_time(code_root_fixup_time_ms); |
34314
413a4bee8103
8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
ehelin
parents:
34313
diff
changeset
|
4472 |
} |
413a4bee8103
8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
ehelin
parents:
34313
diff
changeset
|
4473 |
|
413a4bee8103
8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
ehelin
parents:
34313
diff
changeset
|
4474 |
void G1CollectedHeap::post_evacuate_collection_set(EvacuationInfo& evacuation_info, G1ParScanThreadStateSet* per_thread_states) { |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4475 |
// Process any discovered reference objects - we have |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4476 |
// to do this _before_ we retire the GC alloc regions |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4477 |
// as we may have to copy some 'reachable' referent |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4478 |
// objects (and their reachable sub-graphs) that were |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4479 |
// not copied during the pause. |
34310
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4480 |
if (g1_policy()->should_process_references()) { |
36367
313c87c050f7
8076463: Add logging for the preserve CM referents task
tschatzl
parents:
36201
diff
changeset
|
4481 |
preserve_cm_referents(per_thread_states); |
34310
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4482 |
process_discovered_references(per_thread_states); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4483 |
} else { |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4484 |
ref_processor_stw()->verify_no_references_recorded(); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4485 |
process_weak_jni_handles(); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4486 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4487 |
|
27437 | 4488 |
if (G1StringDedup::is_enabled()) { |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
4489 |
double fixup_start = os::elapsedTime(); |
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
4490 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4491 |
G1STWIsAliveClosure is_alive(this); |
1374 | 4492 |
G1KeepAliveClosure keep_alive(this); |
34314
413a4bee8103
8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
ehelin
parents:
34313
diff
changeset
|
4493 |
G1StringDedup::unlink_or_oops_do(&is_alive, &keep_alive, true, g1_policy()->phase_times()); |
29680
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
4494 |
|
e5203ed6d805
8074037: Refactor the G1GCPhaseTime logging to make it easier to add new phases
brutisso
parents:
29470
diff
changeset
|
4495 |
double fixup_time_ms = (os::elapsedTime() - fixup_start) * 1000.0; |
34314
413a4bee8103
8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
ehelin
parents:
34313
diff
changeset
|
4496 |
g1_policy()->phase_times()->record_string_dedup_fixup_time(fixup_time_ms); |
1374 | 4497 |
} |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4498 |
|
1374 | 4499 |
g1_rem_set()->cleanup_after_oops_into_collection_set_do(); |
2142
032f4652700c
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
2121
diff
changeset
|
4500 |
|
1374 | 4501 |
if (evacuation_failed()) { |
34311
586e90e84d60
8142404: Parallelize the restoring of preserved marks
ehelin
parents:
34310
diff
changeset
|
4502 |
restore_after_evac_failure(); |
13517
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
4503 |
|
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
4504 |
// Reset the G1EvacuationFailureALot counters and flags |
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
4505 |
// Note: the values are reset only when an actual |
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
4506 |
// evacuation failure occurs. |
f158a0c702d4
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
13516
diff
changeset
|
4507 |
NOT_PRODUCT(reset_evacuation_should_fail();) |
1374 | 4508 |
} |
4509 |
||
38081
a3bcb7197d45
8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
tonyp
parents:
38013
diff
changeset
|
4510 |
_preserved_marks_set.assert_empty(); |
a3bcb7197d45
8151556: Use the PreservedMarks* classes for the G1 preserved mark stacks
tonyp
parents:
38013
diff
changeset
|
4511 |
|
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4512 |
// Enqueue any remaining references remaining on the STW |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4513 |
// reference processor's discovered lists. We need to do |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4514 |
// this after the card table is cleaned (and verified) as |
18025 | 4515 |
// the act of enqueueing entries on to the pending list |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4516 |
// will log these updates (and dirty their associated |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4517 |
// cards). We need these updates logged to update any |
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4518 |
// RSets. |
34310
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4519 |
if (g1_policy()->should_process_references()) { |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4520 |
enqueue_discovered_references(per_thread_states); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4521 |
} else { |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4522 |
g1_policy()->phase_times()->record_ref_enq_time(0); |
32e3c906b613
8139892: Allow G1CollectorPolicy to specify if reference processing should be enabled
ehelin
parents:
34302
diff
changeset
|
4523 |
} |
34314
413a4bee8103
8144076: Move evac failure handling and reference processing to post_evacuate_collection_set
ehelin
parents:
34313
diff
changeset
|
4524 |
|
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4525 |
_allocator->release_gc_alloc_regions(evacuation_info); |
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4526 |
|
36368
569d6e8072a9
8150630: Add logging for ParScanThreadState merge phase
tschatzl
parents:
36367
diff
changeset
|
4527 |
merge_per_thread_state_info(per_thread_states); |
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4528 |
|
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4529 |
// Reset and re-enable the hot card cache. |
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4530 |
// Note the counts for the cards in the regions in the |
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4531 |
// collection set are reset when the collection set is freed. |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
4532 |
_hot_card_cache->reset_hot_cache(); |
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
4533 |
_hot_card_cache->set_use_cache(true); |
33609
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4534 |
|
299b060a610d
8139149: Split G1 evacuate_collection_set into multiple steps
mgerdin
parents:
33602
diff
changeset
|
4535 |
purge_code_root_memory(); |
10670
4ea0e7d2ffbc
6484982: G1: process references during evacuation pauses
johnc
parents:
10664
diff
changeset
|
4536 |
|
26701
f8ff74a6c058
8052172: Evacuation failure handling in G1 does not evacuate all objects if -XX:-G1DeferredRSUpdate is set
tschatzl
parents:
26696
diff
changeset
|
4537 |
redirty_logged_cards(); |
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
4538 |
#if defined(COMPILER2) || INCLUDE_JVMCI |
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
4539 |
double start = os::elapsedTime(); |
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
4540 |
DerivedPointerTable::update_pointers(); |
46330
40e2718fac10
8155094: Add logging for long lasting methods found in JDK-8152948
tschatzl
parents:
46309
diff
changeset
|
4541 |
g1_policy()->phase_times()->record_derived_pointer_table_update_time((os::elapsedTime() - start) * 1000.0); |
33160
c59f1676d27e
8136421: JEP 243: Java-Level JVM Compiler Interface
twisti
parents:
32818
diff
changeset
|
4542 |
#endif |
40914
90c87069b39c
8164936: G1 age table printout contains contents from previous GC
tschatzl
parents:
40670
diff
changeset
|
4543 |
g1_policy()->print_age_table(); |
1374 | 4544 |
} |
4545 |
||
32380
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
4546 |
void G1CollectedHeap::record_obj_copy_mem_stats() { |
34298
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
4547 |
g1_policy()->add_bytes_allocated_in_old_since_last_gc(_old_evac_stats.allocated() * HeapWordSize); |
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
4548 |
|
32380
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
4549 |
_gc_tracer_stw->report_evacuation_statistics(create_g1_evac_summary(&_survivor_evac_stats), |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
4550 |
create_g1_evac_summary(&_old_evac_stats)); |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
4551 |
} |
1dcdb686f0cb
8133530: Add JFR event for evacuation statistics
tschatzl
parents:
32379
diff
changeset
|
4552 |
|
7923 | 4553 |
void G1CollectedHeap::free_region(HeapRegion* hr, |
4554 |
FreeRegionList* free_list, |
|
39979 | 4555 |
bool skip_remset, |
4556 |
bool skip_hot_card_cache, |
|
23453
09cfb0164acf
8027295: Free CSet takes ~50% of young pause time
tschatzl
parents:
23451
diff
changeset
|
4557 |
bool locked) { |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
4558 |
assert(!hr->is_free(), "the region should not be free"); |
7923 | 4559 |
assert(!hr->is_empty(), "the region should not be empty"); |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
4560 |
assert(_hrm.is_available(hr->hrm_index()), "region should be committed"); |
7923 | 4561 |
assert(free_list != NULL, "pre-condition"); |
4562 |
||
24244
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
4563 |
if (G1VerifyBitmaps) { |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
4564 |
MemRegion mr(hr->bottom(), hr->end()); |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
4565 |
concurrent_mark()->clearRangePrevBitmap(mr); |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
4566 |
} |
2c7a1e5649bd
7132678: G1: verify that the marking bitmaps have no marks for objects over TAMS
brutisso
parents:
24107
diff
changeset
|
4567 |
|
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
17323
diff
changeset
|
4568 |
// Clear the card counts for this region. |
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
17323
diff
changeset
|
4569 |
// Note: we only need to do this if the region is not young |
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
17323
diff
changeset
|
4570 |
// (since we don't refine cards in young regions). |
39979 | 4571 |
if (!skip_hot_card_cache && !hr->is_young()) { |
38172
90f405aac699
8155524: HotCardCache shouldn't be part of ConcurrentG1Refine
kbarrett
parents:
38167
diff
changeset
|
4572 |
_hot_card_cache->reset_card_counts(hr); |
17327
4bd0581aa231
7176479: G1: JVM crashes on T5-8 system with 1.5 TB heap
johnc
parents:
17323
diff
changeset
|
4573 |
} |
39979 | 4574 |
hr->hr_clear(skip_remset, true /* clear_space */, locked /* locked */); |
23471
ec9427262f0a
8036025: Sort the freelist in order to shrink the heap
jwilhelm
parents:
23462
diff
changeset
|
4575 |
free_list->add_ordered(hr); |
7923 | 4576 |
} |
4577 |
||
4578 |
void G1CollectedHeap::free_humongous_region(HeapRegion* hr, |
|
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
4579 |
FreeRegionList* free_list, |
39979 | 4580 |
bool skip_remset) { |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
4581 |
assert(hr->is_humongous(), "this is only for humongous regions"); |
7923 | 4582 |
assert(free_list != NULL, "pre-condition"); |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
4583 |
hr->clear_humongous(); |
39979 | 4584 |
free_region(hr, free_list, skip_remset); |
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4585 |
} |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4586 |
|
35065
b4ff0249c092
8144996: Replace the HeapRegionSetCount class with an uint
david
parents:
35061
diff
changeset
|
4587 |
void G1CollectedHeap::remove_from_old_sets(const uint old_regions_removed, |
b4ff0249c092
8144996: Replace the HeapRegionSetCount class with an uint
david
parents:
35061
diff
changeset
|
4588 |
const uint humongous_regions_removed) { |
b4ff0249c092
8144996: Replace the HeapRegionSetCount class with an uint
david
parents:
35061
diff
changeset
|
4589 |
if (old_regions_removed > 0 || humongous_regions_removed > 0) { |
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4590 |
MutexLockerEx x(OldSets_lock, Mutex::_no_safepoint_check_flag); |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4591 |
_old_set.bulk_remove(old_regions_removed); |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4592 |
_humongous_set.bulk_remove(humongous_regions_removed); |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4593 |
} |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4594 |
|
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4595 |
} |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4596 |
|
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4597 |
void G1CollectedHeap::prepend_to_freelist(FreeRegionList* list) { |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4598 |
assert(list != NULL, "list can't be null"); |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4599 |
if (!list->is_empty()) { |
7923 | 4600 |
MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag); |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
4601 |
_hrm.insert_list_into_free_list(list); |
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4602 |
} |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4603 |
} |
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4604 |
|
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
4605 |
void G1CollectedHeap::decrement_summary_bytes(size_t bytes) { |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
4606 |
decrease_used(bytes); |
1374 | 4607 |
} |
4608 |
||
35211
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4609 |
class G1ParScrubRemSetTask: public AbstractGangTask { |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4610 |
protected: |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4611 |
G1RemSet* _g1rs; |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4612 |
HeapRegionClaimer _hrclaimer; |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4613 |
|
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4614 |
public: |
37414
2672ba9af0dc
8151386: Extract card live data out of G1ConcurrentMark
tschatzl
parents:
37248
diff
changeset
|
4615 |
G1ParScrubRemSetTask(G1RemSet* g1_rs, uint num_workers) : |
35211
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4616 |
AbstractGangTask("G1 ScrubRS"), |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4617 |
_g1rs(g1_rs), |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4618 |
_hrclaimer(num_workers) { |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4619 |
} |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4620 |
|
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4621 |
void work(uint worker_id) { |
37414
2672ba9af0dc
8151386: Extract card live data out of G1ConcurrentMark
tschatzl
parents:
37248
diff
changeset
|
4622 |
_g1rs->scrub(worker_id, &_hrclaimer); |
35211
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4623 |
} |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4624 |
}; |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4625 |
|
37414
2672ba9af0dc
8151386: Extract card live data out of G1ConcurrentMark
tschatzl
parents:
37248
diff
changeset
|
4626 |
void G1CollectedHeap::scrub_rem_set() { |
35211
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4627 |
uint num_workers = workers()->active_workers(); |
37414
2672ba9af0dc
8151386: Extract card live data out of G1ConcurrentMark
tschatzl
parents:
37248
diff
changeset
|
4628 |
G1ParScrubRemSetTask g1_par_scrub_rs_task(g1_rem_set(), num_workers); |
35211
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4629 |
workers()->run_task(&g1_par_scrub_rs_task); |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4630 |
} |
3771329165d4
8145774: Move scrubbing setup code away out of ConcurrentMark
tschatzl
parents:
35210
diff
changeset
|
4631 |
|
39979 | 4632 |
class G1FreeCollectionSetTask : public AbstractGangTask { |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4633 |
private: |
39979 | 4634 |
|
4635 |
// Closure applied to all regions in the collection set to do work that needs to |
|
4636 |
// be done serially in a single thread. |
|
4637 |
class G1SerialFreeCollectionSetClosure : public HeapRegionClosure { |
|
4638 |
private: |
|
4639 |
EvacuationInfo* _evacuation_info; |
|
4640 |
const size_t* _surviving_young_words; |
|
4641 |
||
4642 |
// Bytes used in successfully evacuated regions before the evacuation. |
|
4643 |
size_t _before_used_bytes; |
|
4644 |
// Bytes used in unsucessfully evacuated regions before the evacuation |
|
4645 |
size_t _after_used_bytes; |
|
4646 |
||
4647 |
size_t _bytes_allocated_in_old_since_last_gc; |
|
4648 |
||
4649 |
size_t _failure_used_words; |
|
4650 |
size_t _failure_waste_words; |
|
4651 |
||
4652 |
FreeRegionList _local_free_list; |
|
4653 |
public: |
|
4654 |
G1SerialFreeCollectionSetClosure(EvacuationInfo* evacuation_info, const size_t* surviving_young_words) : |
|
4655 |
HeapRegionClosure(), |
|
4656 |
_evacuation_info(evacuation_info), |
|
4657 |
_surviving_young_words(surviving_young_words), |
|
4658 |
_before_used_bytes(0), |
|
4659 |
_after_used_bytes(0), |
|
4660 |
_bytes_allocated_in_old_since_last_gc(0), |
|
4661 |
_failure_used_words(0), |
|
4662 |
_failure_waste_words(0), |
|
4663 |
_local_free_list("Local Region List for CSet Freeing") { |
|
4664 |
} |
|
4665 |
||
4666 |
virtual bool doHeapRegion(HeapRegion* r) { |
|
4667 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
|
4668 |
||
4669 |
assert(r->in_collection_set(), "Region %u should be in collection set.", r->hrm_index()); |
|
4670 |
g1h->clear_in_cset(r); |
|
4671 |
||
4672 |
if (r->is_young()) { |
|
4673 |
assert(r->young_index_in_cset() != -1 && (uint)r->young_index_in_cset() < g1h->collection_set()->young_region_length(), |
|
4674 |
"Young index %d is wrong for region %u of type %s with %u young regions", |
|
4675 |
r->young_index_in_cset(), |
|
4676 |
r->hrm_index(), |
|
4677 |
r->get_type_str(), |
|
4678 |
g1h->collection_set()->young_region_length()); |
|
4679 |
size_t words_survived = _surviving_young_words[r->young_index_in_cset()]; |
|
4680 |
r->record_surv_words_in_group(words_survived); |
|
4681 |
} |
|
4682 |
||
4683 |
if (!r->evacuation_failed()) { |
|
4684 |
assert(r->not_empty(), "Region %u is an empty region in the collection set.", r->hrm_index()); |
|
4685 |
_before_used_bytes += r->used(); |
|
4686 |
g1h->free_region(r, |
|
4687 |
&_local_free_list, |
|
4688 |
true, /* skip_remset */ |
|
4689 |
true, /* skip_hot_card_cache */ |
|
4690 |
true /* locked */); |
|
4691 |
} else { |
|
4692 |
r->uninstall_surv_rate_group(); |
|
4693 |
r->set_young_index_in_cset(-1); |
|
4694 |
r->set_evacuation_failed(false); |
|
4695 |
// When moving a young gen region to old gen, we "allocate" that whole region |
|
4696 |
// there. This is in addition to any already evacuated objects. Notify the |
|
4697 |
// policy about that. |
|
4698 |
// Old gen regions do not cause an additional allocation: both the objects |
|
4699 |
// still in the region and the ones already moved are accounted for elsewhere. |
|
4700 |
if (r->is_young()) { |
|
4701 |
_bytes_allocated_in_old_since_last_gc += HeapRegion::GrainBytes; |
|
4702 |
} |
|
4703 |
// The region is now considered to be old. |
|
4704 |
r->set_old(); |
|
4705 |
// Do some allocation statistics accounting. Regions that failed evacuation |
|
4706 |
// are always made old, so there is no need to update anything in the young |
|
4707 |
// gen statistics, but we need to update old gen statistics. |
|
4708 |
size_t used_words = r->marked_bytes() / HeapWordSize; |
|
4709 |
||
4710 |
_failure_used_words += used_words; |
|
4711 |
_failure_waste_words += HeapRegion::GrainWords - used_words; |
|
4712 |
||
4713 |
g1h->old_set_add(r); |
|
4714 |
_after_used_bytes += r->used(); |
|
4715 |
} |
|
4716 |
return false; |
|
4717 |
} |
|
4718 |
||
4719 |
void complete_work() { |
|
4720 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
|
4721 |
||
4722 |
_evacuation_info->set_regions_freed(_local_free_list.length()); |
|
4723 |
_evacuation_info->increment_collectionset_used_after(_after_used_bytes); |
|
4724 |
||
4725 |
g1h->prepend_to_freelist(&_local_free_list); |
|
4726 |
g1h->decrement_summary_bytes(_before_used_bytes); |
|
4727 |
||
4728 |
G1Policy* policy = g1h->g1_policy(); |
|
4729 |
policy->add_bytes_allocated_in_old_since_last_gc(_bytes_allocated_in_old_since_last_gc); |
|
4730 |
||
4731 |
g1h->alloc_buffer_stats(InCSetState::Old)->add_failure_used_and_waste(_failure_used_words, _failure_waste_words); |
|
4732 |
} |
|
4733 |
}; |
|
4734 |
||
4735 |
G1CollectionSet* _collection_set; |
|
4736 |
G1SerialFreeCollectionSetClosure _cl; |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4737 |
const size_t* _surviving_young_words; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4738 |
|
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4739 |
size_t _rs_lengths; |
39979 | 4740 |
|
4741 |
volatile jint _serial_work_claim; |
|
4742 |
||
4743 |
struct WorkItem { |
|
4744 |
uint region_idx; |
|
4745 |
bool is_young; |
|
4746 |
bool evacuation_failed; |
|
4747 |
||
4748 |
WorkItem(HeapRegion* r) { |
|
4749 |
region_idx = r->hrm_index(); |
|
4750 |
is_young = r->is_young(); |
|
4751 |
evacuation_failed = r->evacuation_failed(); |
|
4752 |
} |
|
4753 |
}; |
|
4754 |
||
4755 |
volatile size_t _parallel_work_claim; |
|
4756 |
size_t _num_work_items; |
|
4757 |
WorkItem* _work_items; |
|
4758 |
||
4759 |
void do_serial_work() { |
|
4760 |
// Need to grab the lock to be allowed to modify the old region list. |
|
4761 |
MutexLockerEx x(OldSets_lock, Mutex::_no_safepoint_check_flag); |
|
4762 |
_collection_set->iterate(&_cl); |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4763 |
} |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4764 |
|
39979 | 4765 |
void do_parallel_work_for_region(uint region_idx, bool is_young, bool evacuation_failed) { |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4766 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
39979 | 4767 |
|
4768 |
HeapRegion* r = g1h->region_at(region_idx); |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4769 |
assert(!g1h->is_on_master_free_list(r), "sanity"); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4770 |
|
39979 | 4771 |
Atomic::add(r->rem_set()->occupied_locked(), &_rs_lengths); |
4772 |
||
4773 |
if (!is_young) { |
|
4774 |
g1h->_hot_card_cache->reset_card_counts(r); |
|
4775 |
} |
|
4776 |
||
4777 |
if (!evacuation_failed) { |
|
4778 |
r->rem_set()->clear_locked(); |
|
4779 |
} |
|
4780 |
} |
|
4781 |
||
4782 |
class G1PrepareFreeCollectionSetClosure : public HeapRegionClosure { |
|
4783 |
private: |
|
4784 |
size_t _cur_idx; |
|
4785 |
WorkItem* _work_items; |
|
4786 |
public: |
|
4787 |
G1PrepareFreeCollectionSetClosure(WorkItem* work_items) : HeapRegionClosure(), _cur_idx(0), _work_items(work_items) { } |
|
4788 |
||
4789 |
virtual bool doHeapRegion(HeapRegion* r) { |
|
4790 |
_work_items[_cur_idx++] = WorkItem(r); |
|
4791 |
return false; |
|
1374 | 4792 |
} |
39979 | 4793 |
}; |
4794 |
||
4795 |
void prepare_work() { |
|
4796 |
G1PrepareFreeCollectionSetClosure cl(_work_items); |
|
4797 |
_collection_set->iterate(&cl); |
|
4798 |
} |
|
4799 |
||
4800 |
void complete_work() { |
|
4801 |
_cl.complete_work(); |
|
4802 |
||
4803 |
G1Policy* policy = G1CollectedHeap::heap()->g1_policy(); |
|
4804 |
policy->record_max_rs_lengths(_rs_lengths); |
|
4805 |
policy->cset_regions_freed(); |
|
4806 |
} |
|
4807 |
public: |
|
4808 |
G1FreeCollectionSetTask(G1CollectionSet* collection_set, EvacuationInfo* evacuation_info, const size_t* surviving_young_words) : |
|
4809 |
AbstractGangTask("G1 Free Collection Set"), |
|
4810 |
_cl(evacuation_info, surviving_young_words), |
|
4811 |
_collection_set(collection_set), |
|
4812 |
_surviving_young_words(surviving_young_words), |
|
4813 |
_serial_work_claim(0), |
|
4814 |
_rs_lengths(0), |
|
4815 |
_parallel_work_claim(0), |
|
4816 |
_num_work_items(collection_set->region_length()), |
|
4817 |
_work_items(NEW_C_HEAP_ARRAY(WorkItem, _num_work_items, mtGC)) { |
|
4818 |
prepare_work(); |
|
4819 |
} |
|
4820 |
||
4821 |
~G1FreeCollectionSetTask() { |
|
4822 |
complete_work(); |
|
4823 |
FREE_C_HEAP_ARRAY(WorkItem, _work_items); |
|
4824 |
} |
|
4825 |
||
4826 |
// Chunk size for work distribution. The chosen value has been determined experimentally |
|
4827 |
// to be a good tradeoff between overhead and achievable parallelism. |
|
4828 |
static uint chunk_size() { return 32; } |
|
4829 |
||
4830 |
virtual void work(uint worker_id) { |
|
4831 |
G1GCPhaseTimes* timer = G1CollectedHeap::heap()->g1_policy()->phase_times(); |
|
4832 |
||
4833 |
// Claim serial work. |
|
4834 |
if (_serial_work_claim == 0) { |
|
4835 |
jint value = Atomic::add(1, &_serial_work_claim) - 1; |
|
4836 |
if (value == 0) { |
|
4837 |
double serial_time = os::elapsedTime(); |
|
4838 |
do_serial_work(); |
|
4839 |
timer->record_serial_free_cset_time_ms((os::elapsedTime() - serial_time) * 1000.0); |
|
34298
f3c9dcc5af96
8136681: Factor out IHOP calculation from G1CollectorPolicy
tschatzl
parents:
34249
diff
changeset
|
4840 |
} |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4841 |
} |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4842 |
|
39979 | 4843 |
// Start parallel work. |
4844 |
double young_time = 0.0; |
|
4845 |
bool has_young_time = false; |
|
4846 |
double non_young_time = 0.0; |
|
4847 |
bool has_non_young_time = false; |
|
4848 |
||
4849 |
while (true) { |
|
4850 |
size_t end = Atomic::add(chunk_size(), &_parallel_work_claim); |
|
4851 |
size_t cur = end - chunk_size(); |
|
4852 |
||
4853 |
if (cur >= _num_work_items) { |
|
4854 |
break; |
|
4855 |
} |
|
4856 |
||
4857 |
double start_time = os::elapsedTime(); |
|
4858 |
||
4859 |
end = MIN2(end, _num_work_items); |
|
4860 |
||
4861 |
for (; cur < end; cur++) { |
|
4862 |
bool is_young = _work_items[cur].is_young; |
|
4863 |
||
4864 |
do_parallel_work_for_region(_work_items[cur].region_idx, is_young, _work_items[cur].evacuation_failed); |
|
4865 |
||
4866 |
double end_time = os::elapsedTime(); |
|
4867 |
double time_taken = end_time - start_time; |
|
4868 |
if (is_young) { |
|
4869 |
young_time += time_taken; |
|
4870 |
has_young_time = true; |
|
4871 |
} else { |
|
4872 |
non_young_time += time_taken; |
|
4873 |
has_non_young_time = true; |
|
4874 |
} |
|
4875 |
start_time = end_time; |
|
4876 |
} |
|
1374 | 4877 |
} |
39979 | 4878 |
|
4879 |
if (has_young_time) { |
|
4880 |
timer->record_time_secs(G1GCPhaseTimes::YoungFreeCSet, worker_id, young_time); |
|
4881 |
} |
|
4882 |
if (has_non_young_time) { |
|
4883 |
timer->record_time_secs(G1GCPhaseTimes::NonYoungFreeCSet, worker_id, young_time); |
|
4884 |
} |
|
1374 | 4885 |
} |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4886 |
}; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4887 |
|
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4888 |
void G1CollectedHeap::free_collection_set(G1CollectionSet* collection_set, EvacuationInfo& evacuation_info, const size_t* surviving_young_words) { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4889 |
_eden.clear(); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4890 |
|
39979 | 4891 |
double free_cset_start_time = os::elapsedTime(); |
4892 |
||
4893 |
{ |
|
4894 |
uint const num_chunks = MAX2(_collection_set.region_length() / G1FreeCollectionSetTask::chunk_size(), 1U); |
|
4895 |
uint const num_workers = MIN2(workers()->active_workers(), num_chunks); |
|
4896 |
||
4897 |
G1FreeCollectionSetTask cl(collection_set, &evacuation_info, surviving_young_words); |
|
4898 |
||
4899 |
log_debug(gc, ergo)("Running %s using %u workers for collection set length %u", |
|
4900 |
cl.name(), |
|
4901 |
num_workers, |
|
4902 |
_collection_set.region_length()); |
|
4903 |
workers()->run_task(&cl, num_workers); |
|
4904 |
} |
|
4905 |
g1_policy()->phase_times()->record_total_free_cset_time_ms((os::elapsedTime() - free_cset_start_time) * 1000.0); |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4906 |
|
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
4907 |
collection_set->clear(); |
1374 | 4908 |
} |
4909 |
||
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4910 |
class G1FreeHumongousRegionClosure : public HeapRegionClosure { |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4911 |
private: |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4912 |
FreeRegionList* _free_region_list; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4913 |
HeapRegionSet* _proxy_set; |
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
4914 |
uint _humongous_objects_reclaimed; |
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
4915 |
uint _humongous_regions_reclaimed; |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4916 |
size_t _freed_bytes; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4917 |
public: |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4918 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4919 |
G1FreeHumongousRegionClosure(FreeRegionList* free_region_list) : |
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
4920 |
_free_region_list(free_region_list), _humongous_objects_reclaimed(0), _humongous_regions_reclaimed(0), _freed_bytes(0) { |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4921 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4922 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4923 |
virtual bool doHeapRegion(HeapRegion* r) { |
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
4924 |
if (!r->is_starts_humongous()) { |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4925 |
return false; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4926 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4927 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4928 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4929 |
|
25903
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4930 |
oop obj = (oop)r->bottom(); |
35943
e726308008c0
8148973: Rename g1/concurrentMark.{hpp,cpp,inline.hpp} to g1/g1ConcurrentMark.{hpp,cpp,inline.hpp}
ehelin
parents:
35909
diff
changeset
|
4931 |
G1CMBitMap* next_bitmap = g1h->concurrent_mark()->nextMarkBitMap(); |
25903
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4932 |
|
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4933 |
// The following checks whether the humongous object is live are sufficient. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4934 |
// The main additional check (in addition to having a reference from the roots |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4935 |
// or the young gen) is whether the humongous object has a remembered set entry. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4936 |
// |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4937 |
// A humongous object cannot be live if there is no remembered set for it |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4938 |
// because: |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4939 |
// - there can be no references from within humongous starts regions referencing |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4940 |
// the object because we never allocate other objects into them. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4941 |
// (I.e. there are no intra-region references that may be missed by the |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4942 |
// remembered set) |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4943 |
// - as soon there is a remembered set entry to the humongous starts region |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4944 |
// (i.e. it has "escaped" to an old object) this remembered set entry will stay |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4945 |
// until the end of a concurrent mark. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4946 |
// |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4947 |
// It is not required to check whether the object has been found dead by marking |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4948 |
// or not, in fact it would prevent reclamation within a concurrent cycle, as |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4949 |
// all objects allocated during that time are considered live. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4950 |
// SATB marking is even more conservative than the remembered set. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4951 |
// So if at this point in the collection there is no remembered set entry, |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4952 |
// nobody has a reference to it. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4953 |
// At the start of collection we flush all refinement logs, and remembered sets |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4954 |
// are completely up-to-date wrt to references to the humongous object. |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4955 |
// |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4956 |
// Other implementation considerations: |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
4957 |
// - never consider object arrays at this time because they would pose |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
4958 |
// considerable effort for cleaning up the the remembered sets. This is |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
4959 |
// required because stale remembered sets might reference locations that |
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
4960 |
// are currently allocated into. |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
4961 |
uint region_idx = r->hrm_index(); |
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4962 |
if (!g1h->is_humongous_reclaim_candidate(region_idx) || |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4963 |
!r->rem_set()->is_empty()) { |
35061 | 4964 |
log_debug(gc, humongous)("Live humongous region %u object size " SIZE_FORMAT " start " PTR_FORMAT " with remset " SIZE_FORMAT " code roots " SIZE_FORMAT " is marked %d reclaim candidate %d type array %d", |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4965 |
region_idx, |
30272
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
4966 |
(size_t)obj->size() * HeapWordSize, |
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
4967 |
p2i(r->bottom()), |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4968 |
r->rem_set()->occupied(), |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4969 |
r->rem_set()->strong_code_roots_list_length(), |
25903
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4970 |
next_bitmap->isMarked(r->bottom()), |
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4971 |
g1h->is_humongous_reclaim_candidate(region_idx), |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4972 |
obj->is_typeArray() |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4973 |
); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4974 |
return false; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4975 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4976 |
|
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4977 |
guarantee(obj->is_typeArray(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
4978 |
"Only eagerly reclaiming type arrays is supported, but the object " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
4979 |
PTR_FORMAT " is not.", p2i(r->bottom())); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4980 |
|
35061 | 4981 |
log_debug(gc, humongous)("Dead humongous region %u object size " SIZE_FORMAT " start " PTR_FORMAT " with remset " SIZE_FORMAT " code roots " SIZE_FORMAT " is marked %d reclaim candidate %d type array %d", |
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
4982 |
region_idx, |
30272
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
4983 |
(size_t)obj->size() * HeapWordSize, |
8cbe337a692c
8042891: Format issues embedded in macros for two g1 source files
stefank
parents:
30270
diff
changeset
|
4984 |
p2i(r->bottom()), |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4985 |
r->rem_set()->occupied(), |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4986 |
r->rem_set()->strong_code_roots_list_length(), |
25903
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4987 |
next_bitmap->isMarked(r->bottom()), |
30182
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4988 |
g1h->is_humongous_reclaim_candidate(region_idx), |
1c980a880941
8069367: Eagerly reclaimed humongous objects left on mark stack
kbarrett
parents:
30175
diff
changeset
|
4989 |
obj->is_typeArray() |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
4990 |
); |
35061 | 4991 |
|
25903
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4992 |
// Need to clear mark bit of the humongous object if already set. |
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4993 |
if (next_bitmap->isMarked(r->bottom())) { |
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4994 |
next_bitmap->clear(r->bottom()); |
21a77ac2b8c5
8051973: Eager reclaim leaves marks of marked but reclaimed objects on the next bitmap
tschatzl
parents:
25889
diff
changeset
|
4995 |
} |
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
4996 |
_humongous_objects_reclaimed++; |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
4997 |
do { |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
4998 |
HeapRegion* next = g1h->next_region_in_humongous(r); |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
4999 |
_freed_bytes += r->used(); |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
5000 |
r->set_containing_set(NULL); |
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5001 |
_humongous_regions_reclaimed++; |
39979 | 5002 |
g1h->free_humongous_region(r, _free_region_list, false /* skip_remset */ ); |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
5003 |
r = next; |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33760
diff
changeset
|
5004 |
} while (r != NULL); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5005 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5006 |
return false; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5007 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5008 |
|
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5009 |
uint humongous_objects_reclaimed() { |
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5010 |
return _humongous_objects_reclaimed; |
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5011 |
} |
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5012 |
|
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5013 |
uint humongous_regions_reclaimed() { |
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5014 |
return _humongous_regions_reclaimed; |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5015 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5016 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5017 |
size_t bytes_freed() const { |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5018 |
return _freed_bytes; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5019 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5020 |
}; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5021 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5022 |
void G1CollectedHeap::eagerly_reclaim_humongous_regions() { |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5023 |
assert_at_safepoint(true); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5024 |
|
28379
e6784fc8fff2
8048179: Early reclaim of large objects that are referenced by a few objects
tschatzl
parents:
28217
diff
changeset
|
5025 |
if (!G1EagerReclaimHumongousObjects || |
35061 | 5026 |
(!_has_humongous_reclaim_candidates && !log_is_enabled(Debug, gc, humongous))) { |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5027 |
g1_policy()->phase_times()->record_fast_reclaim_humongous_time_ms(0.0, 0); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5028 |
return; |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5029 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5030 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5031 |
double start_time = os::elapsedTime(); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5032 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5033 |
FreeRegionList local_cleanup_list("Local Humongous Cleanup List"); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5034 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5035 |
G1FreeHumongousRegionClosure cl(&local_cleanup_list); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5036 |
heap_region_iterate(&cl); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5037 |
|
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5038 |
remove_from_old_sets(0, cl.humongous_regions_reclaimed()); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5039 |
|
30258
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
5040 |
G1HRPrinter* hrp = hr_printer(); |
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
5041 |
if (hrp->is_active()) { |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5042 |
FreeRegionListIterator iter(&local_cleanup_list); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5043 |
while (iter.more_available()) { |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5044 |
HeapRegion* hr = iter.get_next(); |
30258
413e15d1b146
8077415: Remove duplicate variables holding the CollectedHeap
pliden
parents:
30182
diff
changeset
|
5045 |
hrp->cleanup(hr); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5046 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5047 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5048 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5049 |
prepend_to_freelist(&local_cleanup_list); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5050 |
decrement_summary_bytes(cl.bytes_freed()); |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5051 |
|
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5052 |
g1_policy()->phase_times()->record_fast_reclaim_humongous_time_ms((os::elapsedTime() - start_time) * 1000.0, |
46457
641e73c3832a
8177764: Humongous Reclaimed log output may be confusing
tschatzl
parents:
46456
diff
changeset
|
5053 |
cl.humongous_objects_reclaimed()); |
25889
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5054 |
} |
221296ac4359
8027959: Early reclamation of large objects in G1
tschatzl
parents:
25730
diff
changeset
|
5055 |
|
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5056 |
class G1AbandonCollectionSetClosure : public HeapRegionClosure { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5057 |
public: |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5058 |
virtual bool doHeapRegion(HeapRegion* r) { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5059 |
assert(r->in_collection_set(), "Region %u must have been in collection set", r->hrm_index()); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5060 |
G1CollectedHeap::heap()->clear_in_cset(r); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5061 |
r->set_young_index_in_cset(-1); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5062 |
return false; |
5350
cccf0925702e
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
5347
diff
changeset
|
5063 |
} |
39698
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5064 |
}; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5065 |
|
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5066 |
void G1CollectedHeap::abandon_collection_set(G1CollectionSet* collection_set) { |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5067 |
G1AbandonCollectionSetClosure cl; |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5068 |
collection_set->iterate(&cl); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5069 |
|
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5070 |
collection_set->clear(); |
4016de4e596b
8159978: Use an array to store the collection set regions instead of linking through regions
tschatzl
parents:
39228
diff
changeset
|
5071 |
collection_set->stop_incremental_building(); |
5350
cccf0925702e
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
5347
diff
changeset
|
5072 |
} |
cccf0925702e
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
5347
diff
changeset
|
5073 |
|
7923 | 5074 |
void G1CollectedHeap::set_free_regions_coming() { |
35061 | 5075 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [cm thread] : setting free regions coming"); |
7923 | 5076 |
|
5077 |
assert(!free_regions_coming(), "pre-condition"); |
|
5078 |
_free_regions_coming = true; |
|
1374 | 5079 |
} |
5080 |
||
7923 | 5081 |
void G1CollectedHeap::reset_free_regions_coming() { |
11584
e1df4d08a1f4
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
11583
diff
changeset
|
5082 |
assert(free_regions_coming(), "pre-condition"); |
e1df4d08a1f4
7127706: G1: re-enable survivors during the initial-mark pause
tonyp
parents:
11583
diff
changeset
|
5083 |
|
7923 | 5084 |
{ |
5085 |
MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag); |
|
5086 |
_free_regions_coming = false; |
|
5087 |
SecondaryFreeList_lock->notify_all(); |
|
5088 |
} |
|
5089 |
||
35061 | 5090 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [cm thread] : reset free regions coming"); |
1374 | 5091 |
} |
5092 |
||
7923 | 5093 |
void G1CollectedHeap::wait_while_free_regions_coming() { |
5094 |
// Most of the time we won't have to wait, so let's do a quick test |
|
5095 |
// first before we take the lock. |
|
5096 |
if (!free_regions_coming()) { |
|
5097 |
return; |
|
5098 |
} |
|
5099 |
||
35061 | 5100 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [other] : waiting for free regions"); |
1374 | 5101 |
|
5102 |
{ |
|
7923 | 5103 |
MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag); |
5104 |
while (free_regions_coming()) { |
|
5105 |
SecondaryFreeList_lock->wait(Mutex::_no_safepoint_check_flag); |
|
1374 | 5106 |
} |
7923 | 5107 |
} |
5108 |
||
35061 | 5109 |
log_develop_trace(gc, freelist)("G1ConcRegionFreeing [other] : done waiting for free regions"); |
1374 | 5110 |
} |
5111 |
||
32378
8dd0e7359751
8133470: Uses of Atomic methods in plab.hpp should be moved to .inline.hpp file
tschatzl
parents:
32360
diff
changeset
|
5112 |
bool G1CollectedHeap::is_old_gc_alloc_region(HeapRegion* hr) { |
8dd0e7359751
8133470: Uses of Atomic methods in plab.hpp should be moved to .inline.hpp file
tschatzl
parents:
32360
diff
changeset
|
5113 |
return _allocator->is_retained_old_region(hr); |
8dd0e7359751
8133470: Uses of Atomic methods in plab.hpp should be moved to .inline.hpp file
tschatzl
parents:
32360
diff
changeset
|
5114 |
} |
8dd0e7359751
8133470: Uses of Atomic methods in plab.hpp should be moved to .inline.hpp file
tschatzl
parents:
32360
diff
changeset
|
5115 |
|
1374 | 5116 |
void G1CollectedHeap::set_region_short_lived_locked(HeapRegion* hr) { |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5117 |
_eden.add(hr); |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5118 |
_g1_policy->set_region_eden(hr); |
1374 | 5119 |
} |
5120 |
||
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5121 |
#ifdef ASSERT |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5122 |
|
1374 | 5123 |
class NoYoungRegionsClosure: public HeapRegionClosure { |
5124 |
private: |
|
5125 |
bool _success; |
|
5126 |
public: |
|
5127 |
NoYoungRegionsClosure() : _success(true) { } |
|
5128 |
bool doHeapRegion(HeapRegion* r) { |
|
5129 |
if (r->is_young()) { |
|
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
36084
diff
changeset
|
5130 |
log_error(gc, verify)("Region [" PTR_FORMAT ", " PTR_FORMAT ") tagged as young", |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
36084
diff
changeset
|
5131 |
p2i(r->bottom()), p2i(r->end())); |
1374 | 5132 |
_success = false; |
5133 |
} |
|
5134 |
return false; |
|
5135 |
} |
|
5136 |
bool success() { return _success; } |
|
5137 |
}; |
|
5138 |
||
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5139 |
bool G1CollectedHeap::check_young_list_empty() { |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5140 |
bool ret = (young_regions_count() == 0); |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5141 |
|
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5142 |
NoYoungRegionsClosure closure; |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5143 |
heap_region_iterate(&closure); |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5144 |
ret = ret && closure.success(); |
1374 | 5145 |
|
5146 |
return ret; |
|
5147 |
} |
|
5148 |
||
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5149 |
#endif // ASSERT |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5150 |
|
10996 | 5151 |
class TearDownRegionSetsClosure : public HeapRegionClosure { |
5152 |
private: |
|
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
5153 |
HeapRegionSet *_old_set; |
7923 | 5154 |
|
1374 | 5155 |
public: |
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
5156 |
TearDownRegionSetsClosure(HeapRegionSet* old_set) : _old_set(old_set) { } |
7923 | 5157 |
|
1374 | 5158 |
bool doHeapRegion(HeapRegion* r) { |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5159 |
if (r->is_old()) { |
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5160 |
_old_set->remove(r); |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5161 |
} else if(r->is_young()) { |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5162 |
r->uninstall_surv_rate_group(); |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5163 |
} else { |
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5164 |
// We ignore free regions, we'll empty the free list afterwards. |
10996 | 5165 |
// We ignore humongous regions, we're not tearing down the |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5166 |
// humongous regions set. |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5167 |
assert(r->is_free() || r->is_humongous(), |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5168 |
"it cannot be another type"); |
1374 | 5169 |
} |
5170 |
return false; |
|
5171 |
} |
|
5172 |
||
10996 | 5173 |
~TearDownRegionSetsClosure() { |
5174 |
assert(_old_set->is_empty(), "post-condition"); |
|
7923 | 5175 |
} |
1374 | 5176 |
}; |
5177 |
||
10996 | 5178 |
void G1CollectedHeap::tear_down_region_sets(bool free_list_only) { |
5179 |
assert_at_safepoint(true /* should_be_vm_thread */); |
|
5180 |
||
5181 |
if (!free_list_only) { |
|
5182 |
TearDownRegionSetsClosure cl(&_old_set); |
|
5183 |
heap_region_iterate(&cl); |
|
5184 |
||
23472 | 5185 |
// Note that emptying the _young_list is postponed and instead done as |
5186 |
// the first step when rebuilding the regions sets again. The reason for |
|
5187 |
// this is that during a full GC string deduplication needs to know if |
|
5188 |
// a collected region was young or old when the full GC was initiated. |
|
10996 | 5189 |
} |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5190 |
_hrm.remove_all_free_regions(); |
10996 | 5191 |
} |
5192 |
||
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5193 |
void G1CollectedHeap::increase_used(size_t bytes) { |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5194 |
_summary_bytes_used += bytes; |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5195 |
} |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5196 |
|
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5197 |
void G1CollectedHeap::decrease_used(size_t bytes) { |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5198 |
assert(_summary_bytes_used >= bytes, |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5199 |
"invariant: _summary_bytes_used: " SIZE_FORMAT " should be >= bytes: " SIZE_FORMAT, |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5200 |
_summary_bytes_used, bytes); |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5201 |
_summary_bytes_used -= bytes; |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5202 |
} |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5203 |
|
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5204 |
void G1CollectedHeap::set_used(size_t bytes) { |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5205 |
_summary_bytes_used = bytes; |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5206 |
} |
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5207 |
|
10996 | 5208 |
class RebuildRegionSetsClosure : public HeapRegionClosure { |
5209 |
private: |
|
5210 |
bool _free_list_only; |
|
23450
c7c6202fc7e2
8034079: G1: Refactor the HeapRegionSet hierarchy
brutisso
parents:
22903
diff
changeset
|
5211 |
HeapRegionSet* _old_set; |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5212 |
HeapRegionManager* _hrm; |
10996 | 5213 |
size_t _total_used; |
5214 |
||
5215 |
public: |
|
5216 |
RebuildRegionSetsClosure(bool free_list_only, |
|
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5217 |
HeapRegionSet* old_set, HeapRegionManager* hrm) : |
10996 | 5218 |
_free_list_only(free_list_only), |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5219 |
_old_set(old_set), _hrm(hrm), _total_used(0) { |
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5220 |
assert(_hrm->num_free_regions() == 0, "pre-condition"); |
10996 | 5221 |
if (!free_list_only) { |
5222 |
assert(_old_set->is_empty(), "pre-condition"); |
|
5223 |
} |
|
5224 |
} |
|
5225 |
||
5226 |
bool doHeapRegion(HeapRegion* r) { |
|
5227 |
if (r->is_empty()) { |
|
5228 |
// Add free regions to the free list |
|
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5229 |
r->set_free(); |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
5230 |
r->set_allocation_context(AllocationContext::system()); |
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5231 |
_hrm->insert_into_free_list(r); |
10996 | 5232 |
} else if (!_free_list_only) { |
5233 |
||
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
5234 |
if (r->is_humongous()) { |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5235 |
// We ignore humongous regions. We left the humongous set unchanged. |
10996 | 5236 |
} else { |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5237 |
assert(r->is_young() || r->is_free() || r->is_old(), "invariant"); |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5238 |
// We now consider all regions old, so register as such. Leave |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5239 |
// archive regions set that way, however, while still adding |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5240 |
// them to the old set. |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5241 |
if (!r->is_archive()) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5242 |
r->set_old(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5243 |
} |
10996 | 5244 |
_old_set->add(r); |
5245 |
} |
|
5246 |
_total_used += r->used(); |
|
5247 |
} |
|
5248 |
||
5249 |
return false; |
|
5250 |
} |
|
5251 |
||
5252 |
size_t total_used() { |
|
5253 |
return _total_used; |
|
5254 |
} |
|
5255 |
}; |
|
5256 |
||
5257 |
void G1CollectedHeap::rebuild_region_sets(bool free_list_only) { |
|
5258 |
assert_at_safepoint(true /* should_be_vm_thread */); |
|
5259 |
||
23472 | 5260 |
if (!free_list_only) { |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5261 |
_eden.clear(); |
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5262 |
_survivor.clear(); |
23472 | 5263 |
} |
5264 |
||
26316
93f6b40c038b
8054819: Rename HeapRegionSeq to HeapRegionManager
tschatzl
parents:
26314
diff
changeset
|
5265 |
RebuildRegionSetsClosure cl(free_list_only, &_old_set, &_hrm); |
10996 | 5266 |
heap_region_iterate(&cl); |
5267 |
||
5268 |
if (!free_list_only) { |
|
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5269 |
set_used(cl.total_used()); |
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5270 |
if (_archive_allocator != NULL) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5271 |
_archive_allocator->clear_used(); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5272 |
} |
26837
72a43d3841e7
8057536: Refactor G1 to allow context specific allocations
sjohanss
parents:
26829
diff
changeset
|
5273 |
} |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5274 |
assert(used_unlocked() == recalculate_used(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5275 |
"inconsistent used_unlocked(), " |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5276 |
"value: " SIZE_FORMAT " recalculated: " SIZE_FORMAT, |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5277 |
used_unlocked(), recalculate_used()); |
1374 | 5278 |
} |
5279 |
||
5280 |
void G1CollectedHeap::set_refine_cte_cl_concurrency(bool concurrent) { |
|
5281 |
_refine_cte_cl->set_concurrent(concurrent); |
|
5282 |
} |
|
5283 |
||
5284 |
bool G1CollectedHeap::is_in_closed_subset(const void* p) const { |
|
5285 |
HeapRegion* hr = heap_region_containing(p); |
|
24106
dae9277bdf2a
8040722: G1: Clean up usages of heap_region_containing
brutisso
parents:
24105
diff
changeset
|
5286 |
return hr->is_in(p); |
1374 | 5287 |
} |
7923 | 5288 |
|
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5289 |
// Methods for the mutator alloc region |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5290 |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5291 |
HeapRegion* G1CollectedHeap::new_mutator_alloc_region(size_t word_size, |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5292 |
bool force) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5293 |
assert_heap_locked_or_at_safepoint(true /* should_be_vm_thread */); |
38106 | 5294 |
bool should_allocate = g1_policy()->should_allocate_mutator_region(); |
5295 |
if (force || should_allocate) { |
|
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5296 |
HeapRegion* new_alloc_region = new_region(word_size, |
23471
ec9427262f0a
8036025: Sort the freelist in order to shrink the heap
jwilhelm
parents:
23462
diff
changeset
|
5297 |
false /* is_old */, |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5298 |
false /* do_expand */); |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5299 |
if (new_alloc_region != NULL) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5300 |
set_region_short_lived_locked(new_alloc_region); |
38106 | 5301 |
_hr_printer.alloc(new_alloc_region, !should_allocate); |
35851
5451ff646f8e
8147814: Move verification code out of g1collectedheap
david
parents:
35532
diff
changeset
|
5302 |
_verifier->check_bitmaps("Mutator Region Allocation", new_alloc_region); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5303 |
return new_alloc_region; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5304 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5305 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5306 |
return NULL; |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5307 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5308 |
|
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5309 |
void G1CollectedHeap::retire_mutator_alloc_region(HeapRegion* alloc_region, |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5310 |
size_t allocated_bytes) { |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5311 |
assert_heap_locked_or_at_safepoint(true /* should_be_vm_thread */); |
26696
623a25e6c686
8057768: Make heap region region type in G1 HeapRegion explicit
tonyp
parents:
26692
diff
changeset
|
5312 |
assert(alloc_region->is_eden(), "all mutator alloc regions should be eden"); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5313 |
|
37039
79f62b89a7a6
8151178: Move the collection set out of the G1 collector policy
mgerdin
parents:
36588
diff
changeset
|
5314 |
collection_set()->add_eden_region(alloc_region); |
31975
1e8d389159cb
8131319: Move G1Allocator::_summary_bytes_used back to G1CollectedHeap
ehelin
parents:
31633
diff
changeset
|
5315 |
increase_used(allocated_bytes); |
10001
8aa7f885326e
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
10000
diff
changeset
|
5316 |
_hr_printer.retire(alloc_region); |
10671
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
5317 |
// We update the eden sizes here, when the region is retired, |
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
5318 |
// instead of when it's allocated, since this is the point that its |
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
5319 |
// used space has been recored in _summary_bytes_used. |
431ff8629f97
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
10670
diff
changeset
|
5320 |
g1mm()->update_eden_size(); |
8928
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5321 |
} |
e5c53268bef5
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
8927
diff
changeset
|
5322 |
|
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5323 |
// Methods for the GC alloc regions |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5324 |
|
37159
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5325 |
bool G1CollectedHeap::has_more_regions(InCSetState dest) { |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5326 |
if (dest.is_old()) { |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5327 |
return true; |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5328 |
} else { |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5329 |
return survivor_regions_count() < g1_policy()->max_survivor_regions(); |
37159
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5330 |
} |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5331 |
} |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5332 |
|
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5333 |
HeapRegion* G1CollectedHeap::new_gc_alloc_region(size_t word_size, InCSetState dest) { |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5334 |
assert(FreeList_lock->owned_by_self(), "pre-condition"); |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5335 |
|
37159
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5336 |
if (!has_more_regions(dest)) { |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5337 |
return NULL; |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5338 |
} |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5339 |
|
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5340 |
const bool is_survivor = dest.is_young(); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5341 |
|
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5342 |
HeapRegion* new_alloc_region = new_region(word_size, |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5343 |
!is_survivor, |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5344 |
true /* do_expand */); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5345 |
if (new_alloc_region != NULL) { |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5346 |
// We really only need to do this for old regions given that we |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5347 |
// should never scan survivors. But it doesn't hurt to do it |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5348 |
// for survivors too. |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5349 |
new_alloc_region->record_timestamp(); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5350 |
if (is_survivor) { |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5351 |
new_alloc_region->set_survivor(); |
38183
cb68e4923223
8150721: Don't explicitly manage G1 young regions in YoungList
mgerdin
parents:
38172
diff
changeset
|
5352 |
_survivor.add(new_alloc_region); |
37159
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5353 |
_verifier->check_bitmaps("Survivor Region Allocation", new_alloc_region); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5354 |
} else { |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5355 |
new_alloc_region->set_old(); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5356 |
_verifier->check_bitmaps("Old Region Allocation", new_alloc_region); |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5357 |
} |
37159
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5358 |
_hr_printer.alloc(new_alloc_region); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5359 |
bool during_im = collector_state()->during_initial_mark_pause(); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5360 |
new_alloc_region->note_start_of_copying(during_im); |
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5361 |
return new_alloc_region; |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5362 |
} |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5363 |
return NULL; |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5364 |
} |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5365 |
|
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5366 |
void G1CollectedHeap::retire_gc_alloc_region(HeapRegion* alloc_region, |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5367 |
size_t allocated_bytes, |
28213
b0bf57cd1e9d
8060025: Object copy time regressions after JDK-8031323 and JDK-8057536
tschatzl
parents:
28212
diff
changeset
|
5368 |
InCSetState dest) { |
31331
a7c714b6cfb3
7097567: G1: abstract and encapsulate collector phases and transitions between them
drwhite
parents:
31330
diff
changeset
|
5369 |
bool during_im = collector_state()->during_initial_mark_pause(); |
11455
a6ab3d8b9a4c
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
11453
diff
changeset
|
5370 |
alloc_region->note_end_of_copying(during_im); |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5371 |
g1_policy()->record_bytes_copied_during_gc(allocated_bytes); |
37159
baf5e8b0bd96
8148759: G1AllocRegion::_count inconsistently used if more than one context is active
brutisso
parents:
37148
diff
changeset
|
5372 |
if (dest.is_old()) { |
10996 | 5373 |
_old_set.add(alloc_region); |
10243
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5374 |
} |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5375 |
_hr_printer.retire(alloc_region); |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5376 |
} |
d00a21009f1f
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
10237
diff
changeset
|
5377 |
|
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5378 |
HeapRegion* G1CollectedHeap::alloc_highest_free_region() { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5379 |
bool expanded = false; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5380 |
uint index = _hrm.find_highest_free(&expanded); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5381 |
|
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5382 |
if (index != G1_NO_HRM_INDEX) { |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5383 |
if (expanded) { |
35061 | 5384 |
log_debug(gc, ergo, heap)("Attempt heap expansion (requested address range outside heap bounds). region size: " SIZE_FORMAT "B", |
5385 |
HeapRegion::GrainWords * HeapWordSize); |
|
31346
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5386 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5387 |
_hrm.allocate_free_regions_starting_at(index, 1); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5388 |
return region_at(index); |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5389 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5390 |
return NULL; |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5391 |
} |
a70d45c06136
8042668: GC Support for shared heap ranges in CDS
jiangli
parents:
31344
diff
changeset
|
5392 |
|
19339 | 5393 |
// Optimized nmethod scanning |
5394 |
||
5395 |
class RegisterNMethodOopClosure: public OopClosure { |
|
5396 |
G1CollectedHeap* _g1h; |
|
5397 |
nmethod* _nm; |
|
5398 |
||
5399 |
template <class T> void do_oop_work(T* p) { |
|
5400 |
T heap_oop = oopDesc::load_heap_oop(p); |
|
5401 |
if (!oopDesc::is_null(heap_oop)) { |
|
5402 |
oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
|
5403 |
HeapRegion* hr = _g1h->heap_region_containing(obj); |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
5404 |
assert(!hr->is_continues_humongous(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5405 |
"trying to add code root " PTR_FORMAT " in continuation of humongous region " HR_FORMAT |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5406 |
" starting at " HR_FORMAT, |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5407 |
p2i(_nm), HR_FORMAT_PARAMS(hr), HR_FORMAT_PARAMS(hr->humongous_start_region())); |
19339 | 5408 |
|
26422 | 5409 |
// HeapRegion::add_strong_code_root_locked() avoids adding duplicate entries. |
5410 |
hr->add_strong_code_root_locked(_nm); |
|
19339 | 5411 |
} |
5412 |
} |
|
5413 |
||
5414 |
public: |
|
5415 |
RegisterNMethodOopClosure(G1CollectedHeap* g1h, nmethod* nm) : |
|
5416 |
_g1h(g1h), _nm(nm) {} |
|
5417 |
||
5418 |
void do_oop(oop* p) { do_oop_work(p); } |
|
5419 |
void do_oop(narrowOop* p) { do_oop_work(p); } |
|
5420 |
}; |
|
5421 |
||
5422 |
class UnregisterNMethodOopClosure: public OopClosure { |
|
5423 |
G1CollectedHeap* _g1h; |
|
5424 |
nmethod* _nm; |
|
5425 |
||
5426 |
template <class T> void do_oop_work(T* p) { |
|
5427 |
T heap_oop = oopDesc::load_heap_oop(p); |
|
5428 |
if (!oopDesc::is_null(heap_oop)) { |
|
5429 |
oop obj = oopDesc::decode_heap_oop_not_null(heap_oop); |
|
5430 |
HeapRegion* hr = _g1h->heap_region_containing(obj); |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26841
diff
changeset
|
5431 |
assert(!hr->is_continues_humongous(), |
33105
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5432 |
"trying to remove code root " PTR_FORMAT " in continuation of humongous region " HR_FORMAT |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5433 |
" starting at " HR_FORMAT, |
294e48b4f704
8080775: Better argument formatting for assert() and friends
david
parents:
32818
diff
changeset
|
5434 |
p2i(_nm), HR_FORMAT_PARAMS(hr), HR_FORMAT_PARAMS(hr->humongous_start_region())); |
21563
ccbd86010788
8027756: assert(!hr->isHumongous()) failed: code root in humongous region?
tschatzl
parents:
21561
diff
changeset
|
5435 |
|
19339 | 5436 |
hr->remove_strong_code_root(_nm); |
5437 |
} |
|
5438 |
} |
|
5439 |
||
5440 |
public: |
|
5441 |
UnregisterNMethodOopClosure(G1CollectedHeap* g1h, nmethod* nm) : |
|
5442 |
_g1h(g1h), _nm(nm) {} |
|
5443 |
||
5444 |
void do_oop(oop* p) { do_oop_work(p); } |
|
5445 |
void do_oop(narrowOop* p) { do_oop_work(p); } |
|
5446 |
}; |
|
5447 |
||
5448 |
void G1CollectedHeap::register_nmethod(nmethod* nm) { |
|
5449 |
CollectedHeap::register_nmethod(nm); |
|
5450 |
||
5451 |
guarantee(nm != NULL, "sanity"); |
|
5452 |
RegisterNMethodOopClosure reg_cl(this, nm); |
|
5453 |
nm->oops_do(®_cl); |
|
5454 |
} |
|
5455 |
||
5456 |
void G1CollectedHeap::unregister_nmethod(nmethod* nm) { |
|
5457 |
CollectedHeap::unregister_nmethod(nm); |
|
5458 |
||
5459 |
guarantee(nm != NULL, "sanity"); |
|
5460 |
UnregisterNMethodOopClosure reg_cl(this, nm); |
|
5461 |
nm->oops_do(®_cl, true); |
|
5462 |
} |
|
5463 |
||
23451
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
23450
diff
changeset
|
5464 |
void G1CollectedHeap::purge_code_root_memory() { |
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
23450
diff
changeset
|
5465 |
double purge_start = os::elapsedTime(); |
26422 | 5466 |
G1CodeRootSet::purge(); |
23451
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
23450
diff
changeset
|
5467 |
double purge_time_ms = (os::elapsedTime() - purge_start) * 1000.0; |
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
23450
diff
changeset
|
5468 |
g1_policy()->phase_times()->record_strong_code_root_purge_time(purge_time_ms); |
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
23450
diff
changeset
|
5469 |
} |
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
23450
diff
changeset
|
5470 |
|
19339 | 5471 |
class RebuildStrongCodeRootClosure: public CodeBlobClosure { |
5472 |
G1CollectedHeap* _g1h; |
|
5473 |
||
5474 |
public: |
|
5475 |
RebuildStrongCodeRootClosure(G1CollectedHeap* g1h) : |
|
5476 |
_g1h(g1h) {} |
|
5477 |
||
5478 |
void do_code_blob(CodeBlob* cb) { |
|
5479 |
nmethod* nm = (cb != NULL) ? cb->as_nmethod_or_null() : NULL; |
|
5480 |
if (nm == NULL) { |
|
5481 |
return; |
|
5482 |
} |
|
5483 |
||
25352
1e8645b14f3d
8046231: G1: Code root location ... from nmethod ... not in strong code roots for region
pliden
parents:
25351
diff
changeset
|
5484 |
if (ScavengeRootsInCode) { |
19339 | 5485 |
_g1h->register_nmethod(nm); |
5486 |
} |
|
5487 |
} |
|
5488 |
}; |
|
5489 |
||
5490 |
void G1CollectedHeap::rebuild_strong_code_roots() { |
|
5491 |
RebuildStrongCodeRootClosure blob_cl(this); |
|
5492 |
CodeCache::blobs_do(&blob_cl); |
|
5493 |
} |