author | chegar |
Thu, 17 Oct 2019 20:54:25 +0100 | |
branch | datagramsocketimpl-branch |
changeset 58679 | 9c3209ff7550 |
parent 58678 | 9cf78a70fa4f |
parent 57802 | 854e828d6b5b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2001, 2019, 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 "code/nmethod.hpp" |
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#include "gc/g1/g1BlockOffsetTable.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/g1HeapRegionTraceType.hpp" |
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#include "gc/g1/g1OopClosures.inline.hpp" |
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#include "gc/g1/heapRegion.inline.hpp" |
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#include "gc/g1/heapRegionBounds.inline.hpp" |
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#include "gc/g1/heapRegionManager.inline.hpp" |
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#include "gc/g1/heapRegionRemSet.hpp" |
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#include "gc/g1/heapRegionTracer.hpp" |
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#include "gc/shared/genOopClosures.inline.hpp" |
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#include "gc/shared/space.inline.hpp" |
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#include "logging/log.hpp" |
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#include "logging/logStream.hpp" |
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#include "memory/iterator.inline.hpp" |
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#include "memory/resourceArea.hpp" |
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#include "oops/access.inline.hpp" |
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#include "oops/compressedOops.inline.hpp" |
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#include "oops/oop.inline.hpp" |
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#include "runtime/atomic.hpp" |
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#include "runtime/orderAccess.hpp" |
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#include "utilities/growableArray.hpp" |
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int HeapRegion::LogOfHRGrainBytes = 0; |
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int HeapRegion::LogOfHRGrainWords = 0; |
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int HeapRegion::LogCardsPerRegion = 0; |
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size_t HeapRegion::GrainBytes = 0; |
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size_t HeapRegion::GrainWords = 0; |
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size_t HeapRegion::CardsPerRegion = 0; |
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size_t HeapRegion::max_region_size() { |
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return HeapRegionBounds::max_size(); |
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} |
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size_t HeapRegion::min_region_size_in_words() { |
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return HeapRegionBounds::min_size() >> LogHeapWordSize; |
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} |
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void HeapRegion::setup_heap_region_size(size_t initial_heap_size, size_t max_heap_size) { |
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size_t region_size = G1HeapRegionSize; |
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if (FLAG_IS_DEFAULT(G1HeapRegionSize)) { |
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size_t average_heap_size = (initial_heap_size + max_heap_size) / 2; |
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region_size = MAX2(average_heap_size / HeapRegionBounds::target_number(), |
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HeapRegionBounds::min_size()); |
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} |
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int region_size_log = log2_long((jlong) region_size); |
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// Recalculate the region size to make sure it's a power of |
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// 2. This means that region_size is the largest power of 2 that's |
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// <= what we've calculated so far. |
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region_size = ((size_t)1 << region_size_log); |
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// Now make sure that we don't go over or under our limits. |
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if (region_size < HeapRegionBounds::min_size()) { |
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region_size = HeapRegionBounds::min_size(); |
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} else if (region_size > HeapRegionBounds::max_size()) { |
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region_size = HeapRegionBounds::max_size(); |
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} |
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// And recalculate the log. |
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region_size_log = log2_long((jlong) region_size); |
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// Now, set up the globals. |
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guarantee(LogOfHRGrainBytes == 0, "we should only set it once"); |
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LogOfHRGrainBytes = region_size_log; |
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guarantee(LogOfHRGrainWords == 0, "we should only set it once"); |
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LogOfHRGrainWords = LogOfHRGrainBytes - LogHeapWordSize; |
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guarantee(GrainBytes == 0, "we should only set it once"); |
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// The cast to int is safe, given that we've bounded region_size by |
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// MIN_REGION_SIZE and MAX_REGION_SIZE. |
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GrainBytes = region_size; |
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log_info(gc, heap)("Heap region size: " SIZE_FORMAT "M", GrainBytes / M); |
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guarantee(GrainWords == 0, "we should only set it once"); |
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GrainWords = GrainBytes >> LogHeapWordSize; |
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guarantee((size_t) 1 << LogOfHRGrainWords == GrainWords, "sanity"); |
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guarantee(CardsPerRegion == 0, "we should only set it once"); |
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CardsPerRegion = GrainBytes >> G1CardTable::card_shift; |
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LogCardsPerRegion = log2_long((jlong) CardsPerRegion); |
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if (G1HeapRegionSize != GrainBytes) { |
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FLAG_SET_ERGO(G1HeapRegionSize, GrainBytes); |
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} |
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} |
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void HeapRegion::hr_clear(bool keep_remset, bool clear_space, bool locked) { |
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assert(_humongous_start_region == NULL, |
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"we should have already filtered out humongous regions"); |
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assert(!in_collection_set(), |
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"Should not clear heap region %u in the collection set", hrm_index()); |
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clear_young_index_in_cset(); |
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clear_index_in_opt_cset(); |
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uninstall_surv_rate_group(); |
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set_free(); |
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reset_pre_dummy_top(); |
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if (!keep_remset) { |
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if (locked) { |
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rem_set()->clear_locked(); |
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} else { |
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rem_set()->clear(); |
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} |
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} |
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zero_marked_bytes(); |
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init_top_at_mark_start(); |
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if (clear_space) clear(SpaceDecorator::Mangle); |
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} |
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void HeapRegion::clear_cardtable() { |
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G1CardTable* ct = G1CollectedHeap::heap()->card_table(); |
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ct->clear(MemRegion(bottom(), end())); |
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} |
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void HeapRegion::calc_gc_efficiency() { |
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// GC efficiency is the ratio of how much space would be |
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// reclaimed over how long we predict it would take to reclaim it. |
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G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
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G1Policy* policy = g1h->policy(); |
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// Retrieve a prediction of the elapsed time for this region for |
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// a mixed gc because the region will only be evacuated during a |
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// mixed gc. |
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double region_elapsed_time_ms = |
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policy->predict_region_elapsed_time_ms(this, false /* for_young_gc */); |
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_gc_efficiency = (double) reclaimable_bytes() / region_elapsed_time_ms; |
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} |
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void HeapRegion::set_free() { |
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report_region_type_change(G1HeapRegionTraceType::Free); |
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_type.set_free(); |
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} |
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void HeapRegion::set_eden() { |
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report_region_type_change(G1HeapRegionTraceType::Eden); |
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_type.set_eden(); |
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} |
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|
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void HeapRegion::set_eden_pre_gc() { |
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report_region_type_change(G1HeapRegionTraceType::Eden); |
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_type.set_eden_pre_gc(); |
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} |
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|
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void HeapRegion::set_survivor() { |
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report_region_type_change(G1HeapRegionTraceType::Survivor); |
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_type.set_survivor(); |
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} |
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|
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void HeapRegion::move_to_old() { |
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if (_type.relabel_as_old()) { |
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report_region_type_change(G1HeapRegionTraceType::Old); |
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} |
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} |
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|
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void HeapRegion::set_old() { |
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report_region_type_change(G1HeapRegionTraceType::Old); |
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_type.set_old(); |
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} |
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|
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void HeapRegion::set_open_archive() { |
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report_region_type_change(G1HeapRegionTraceType::OpenArchive); |
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_type.set_open_archive(); |
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} |
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|
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void HeapRegion::set_closed_archive() { |
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report_region_type_change(G1HeapRegionTraceType::ClosedArchive); |
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_type.set_closed_archive(); |
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} |
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201 |
|
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void HeapRegion::set_starts_humongous(HeapWord* obj_top, size_t fill_size) { |
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assert(!is_humongous(), "sanity / pre-condition"); |
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assert(top() == bottom(), "should be empty"); |
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|
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report_region_type_change(G1HeapRegionTraceType::StartsHumongous); |
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_type.set_starts_humongous(); |
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_humongous_start_region = this; |
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_bot_part.set_for_starts_humongous(obj_top, fill_size); |
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} |
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|
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void HeapRegion::set_continues_humongous(HeapRegion* first_hr) { |
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assert(!is_humongous(), "sanity / pre-condition"); |
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assert(top() == bottom(), "should be empty"); |
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assert(first_hr->is_starts_humongous(), "pre-condition"); |
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|
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report_region_type_change(G1HeapRegionTraceType::ContinuesHumongous); |
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_type.set_continues_humongous(); |
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_humongous_start_region = first_hr; |
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_bot_part.set_object_can_span(true); |
1374 | 223 |
} |
224 |
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void HeapRegion::clear_humongous() { |
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assert(is_humongous(), "pre-condition"); |
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assert(capacity() == HeapRegion::GrainBytes, "pre-condition"); |
7923 | 229 |
_humongous_start_region = NULL; |
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_bot_part.set_object_can_span(false); |
7923 | 232 |
} |
233 |
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HeapRegion::HeapRegion(uint hrm_index, |
35461 | 235 |
G1BlockOffsetTable* bot, |
26839 | 236 |
MemRegion mr) : |
35461 | 237 |
G1ContiguousSpace(bot), |
51332 | 238 |
_rem_set(NULL), |
26839 | 239 |
_hrm_index(hrm_index), |
51332 | 240 |
_type(), |
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_humongous_start_region(NULL), |
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_evacuation_failed(false), |
38154 | 243 |
_next(NULL), _prev(NULL), |
7923 | 244 |
#ifdef ASSERT |
245 |
_containing_set(NULL), |
|
51332 | 246 |
#endif |
247 |
_prev_marked_bytes(0), _next_marked_bytes(0), _gc_efficiency(0.0), |
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_index_in_opt_cset(InvalidCSetIndex), _young_index_in_cset(-1), |
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_surv_rate_group(NULL), _age_index(-1), |
51332 | 250 |
_prev_top_at_mark_start(NULL), _next_top_at_mark_start(NULL), |
251 |
_recorded_rs_length(0), _predicted_elapsed_time_ms(0) |
|
1374 | 252 |
{ |
35461 | 253 |
_rem_set = new HeapRegionRemSet(bot, this); |
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|
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initialize(mr); |
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} |
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|
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void HeapRegion::initialize(MemRegion mr, bool clear_space, bool mangle_space) { |
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259 |
assert(_rem_set->is_empty(), "Remembered set must be empty"); |
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|
35461 | 261 |
G1ContiguousSpace::initialize(mr, clear_space, mangle_space); |
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|
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hr_clear(false /*par*/, false /*clear_space*/); |
1388 | 264 |
set_top(bottom()); |
1374 | 265 |
} |
266 |
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void HeapRegion::report_region_type_change(G1HeapRegionTraceType::Type to) { |
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HeapRegionTracer::send_region_type_change(_hrm_index, |
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get_trace_type(), |
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to, |
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271 |
(uintptr_t)bottom(), |
49323 | 272 |
used()); |
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} |
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274 |
|
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void HeapRegion::note_self_forwarding_removal_start(bool during_initial_mark, |
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bool during_conc_mark) { |
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// We always recreate the prev marking info and we'll explicitly |
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// mark all objects we find to be self-forwarded on the prev |
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// bitmap. So all objects need to be below PTAMS. |
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_prev_marked_bytes = 0; |
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281 |
|
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if (during_initial_mark) { |
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// During initial-mark, we'll also explicitly mark all objects |
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// we find to be self-forwarded on the next bitmap. So all |
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// objects need to be below NTAMS. |
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_next_top_at_mark_start = top(); |
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_next_marked_bytes = 0; |
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} else if (during_conc_mark) { |
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// During concurrent mark, all objects in the CSet (including |
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// the ones we find to be self-forwarded) are implicitly live. |
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// So all objects need to be above NTAMS. |
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_next_top_at_mark_start = bottom(); |
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_next_marked_bytes = 0; |
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} |
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} |
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296 |
|
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void HeapRegion::note_self_forwarding_removal_end(size_t marked_bytes) { |
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assert(marked_bytes <= used(), |
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"marked: " SIZE_FORMAT " used: " SIZE_FORMAT, marked_bytes, used()); |
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_prev_top_at_mark_start = top(); |
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_prev_marked_bytes = marked_bytes; |
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} |
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303 |
|
19339 | 304 |
// Code roots support |
305 |
||
306 |
void HeapRegion::add_strong_code_root(nmethod* nm) { |
|
307 |
HeapRegionRemSet* hrrs = rem_set(); |
|
308 |
hrrs->add_strong_code_root(nm); |
|
309 |
} |
|
310 |
||
26422 | 311 |
void HeapRegion::add_strong_code_root_locked(nmethod* nm) { |
312 |
assert_locked_or_safepoint(CodeCache_lock); |
|
313 |
HeapRegionRemSet* hrrs = rem_set(); |
|
314 |
hrrs->add_strong_code_root_locked(nm); |
|
315 |
} |
|
316 |
||
19339 | 317 |
void HeapRegion::remove_strong_code_root(nmethod* nm) { |
318 |
HeapRegionRemSet* hrrs = rem_set(); |
|
319 |
hrrs->remove_strong_code_root(nm); |
|
320 |
} |
|
321 |
||
322 |
void HeapRegion::strong_code_roots_do(CodeBlobClosure* blk) const { |
|
323 |
HeapRegionRemSet* hrrs = rem_set(); |
|
324 |
hrrs->strong_code_roots_do(blk); |
|
325 |
} |
|
326 |
||
327 |
class VerifyStrongCodeRootOopClosure: public OopClosure { |
|
328 |
const HeapRegion* _hr; |
|
329 |
bool _failures; |
|
330 |
bool _has_oops_in_region; |
|
331 |
||
332 |
template <class T> void do_oop_work(T* p) { |
|
49592
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|
333 |
T heap_oop = RawAccess<>::oop_load(p); |
77fb0be7d19f
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changeset
|
334 |
if (!CompressedOops::is_null(heap_oop)) { |
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changeset
|
335 |
oop obj = CompressedOops::decode_not_null(heap_oop); |
19339 | 336 |
|
337 |
// Note: not all the oops embedded in the nmethod are in the |
|
338 |
// current region. We only look at those which are. |
|
339 |
if (_hr->is_in(obj)) { |
|
340 |
// Object is in the region. Check that its less than top |
|
341 |
if (_hr->top() <= (HeapWord*)obj) { |
|
342 |
// Object is above top |
|
53839
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diff
changeset
|
343 |
log_error(gc, verify)("Object " PTR_FORMAT " in region " HR_FORMAT " is above top ", |
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changeset
|
344 |
p2i(obj), HR_FORMAT_PARAMS(_hr)); |
19339 | 345 |
_failures = true; |
346 |
return; |
|
347 |
} |
|
348 |
// Nmethod has at least one oop in the current region |
|
349 |
_has_oops_in_region = true; |
|
350 |
} |
|
351 |
} |
|
352 |
} |
|
353 |
||
354 |
public: |
|
46258
d26ebd7e2f10
8142749: HeapRegion::_predicted_bytes_to_copy is unused and can be removed
fzhinkin
parents:
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diff
changeset
|
355 |
VerifyStrongCodeRootOopClosure(const HeapRegion* hr): |
19339 | 356 |
_hr(hr), _failures(false), _has_oops_in_region(false) {} |
357 |
||
358 |
void do_oop(narrowOop* p) { do_oop_work(p); } |
|
359 |
void do_oop(oop* p) { do_oop_work(p); } |
|
360 |
||
361 |
bool failures() { return _failures; } |
|
362 |
bool has_oops_in_region() { return _has_oops_in_region; } |
|
363 |
}; |
|
364 |
||
365 |
class VerifyStrongCodeRootCodeBlobClosure: public CodeBlobClosure { |
|
366 |
const HeapRegion* _hr; |
|
367 |
bool _failures; |
|
368 |
public: |
|
369 |
VerifyStrongCodeRootCodeBlobClosure(const HeapRegion* hr) : |
|
370 |
_hr(hr), _failures(false) {} |
|
371 |
||
372 |
void do_code_blob(CodeBlob* cb) { |
|
42650 | 373 |
nmethod* nm = (cb == NULL) ? NULL : cb->as_compiled_method()->as_nmethod_or_null(); |
19339 | 374 |
if (nm != NULL) { |
375 |
// Verify that the nemthod is live |
|
376 |
if (!nm->is_alive()) { |
|
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
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diff
changeset
|
377 |
log_error(gc, verify)("region [" PTR_FORMAT "," PTR_FORMAT "] has dead nmethod " PTR_FORMAT " in its strong code roots", |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
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parents:
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diff
changeset
|
378 |
p2i(_hr->bottom()), p2i(_hr->end()), p2i(nm)); |
19339 | 379 |
_failures = true; |
380 |
} else { |
|
46258
d26ebd7e2f10
8142749: HeapRegion::_predicted_bytes_to_copy is unused and can be removed
fzhinkin
parents:
42650
diff
changeset
|
381 |
VerifyStrongCodeRootOopClosure oop_cl(_hr); |
19339 | 382 |
nm->oops_do(&oop_cl); |
383 |
if (!oop_cl.has_oops_in_region()) { |
|
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
384 |
log_error(gc, verify)("region [" PTR_FORMAT "," PTR_FORMAT "] has nmethod " PTR_FORMAT " in its strong code roots with no pointers into region", |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
385 |
p2i(_hr->bottom()), p2i(_hr->end()), p2i(nm)); |
19339 | 386 |
_failures = true; |
387 |
} else if (oop_cl.failures()) { |
|
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
388 |
log_error(gc, verify)("region [" PTR_FORMAT "," PTR_FORMAT "] has other failures for nmethod " PTR_FORMAT, |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
389 |
p2i(_hr->bottom()), p2i(_hr->end()), p2i(nm)); |
19339 | 390 |
_failures = true; |
391 |
} |
|
392 |
} |
|
393 |
} |
|
394 |
} |
|
395 |
||
396 |
bool failures() { return _failures; } |
|
397 |
}; |
|
398 |
||
399 |
void HeapRegion::verify_strong_code_roots(VerifyOption vo, bool* failures) const { |
|
400 |
if (!G1VerifyHeapRegionCodeRoots) { |
|
401 |
// We're not verifying code roots. |
|
402 |
return; |
|
403 |
} |
|
47885
5caa1d5f74c1
8186571: Implementation: JEP 307: Parallel Full GC for G1
sjohanss
parents:
47216
diff
changeset
|
404 |
if (vo == VerifyOption_G1UseFullMarking) { |
19339 | 405 |
// Marking verification during a full GC is performed after class |
406 |
// unloading, code cache unloading, etc so the strong code roots |
|
407 |
// attached to each heap region are in an inconsistent state. They won't |
|
408 |
// be consistent until the strong code roots are rebuilt after the |
|
409 |
// actual GC. Skip verifying the strong code roots in this particular |
|
410 |
// time. |
|
411 |
assert(VerifyDuringGC, "only way to get here"); |
|
412 |
return; |
|
413 |
} |
|
414 |
||
415 |
HeapRegionRemSet* hrrs = rem_set(); |
|
23451
ed2b8bb28fed
8035406: Improve data structure for Code Cache remembered sets
tschatzl
parents:
22551
diff
changeset
|
416 |
size_t strong_code_roots_length = hrrs->strong_code_roots_list_length(); |
19339 | 417 |
|
418 |
// if this region is empty then there should be no entries |
|
419 |
// on its strong code root list |
|
420 |
if (is_empty()) { |
|
421 |
if (strong_code_roots_length > 0) { |
|
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
422 |
log_error(gc, verify)("region " HR_FORMAT " is empty but has " SIZE_FORMAT " code root entries", |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
423 |
HR_FORMAT_PARAMS(this), strong_code_roots_length); |
19339 | 424 |
*failures = true; |
425 |
} |
|
426 |
return; |
|
427 |
} |
|
428 |
||
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26840
diff
changeset
|
429 |
if (is_continues_humongous()) { |
19339 | 430 |
if (strong_code_roots_length > 0) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
431 |
log_error(gc, verify)("region " HR_FORMAT " is a continuation of a humongous region but has " SIZE_FORMAT " code root entries", |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
432 |
HR_FORMAT_PARAMS(this), strong_code_roots_length); |
19339 | 433 |
*failures = true; |
434 |
} |
|
435 |
return; |
|
436 |
} |
|
437 |
||
438 |
VerifyStrongCodeRootCodeBlobClosure cb_cl(this); |
|
439 |
strong_code_roots_do(&cb_cl); |
|
440 |
||
441 |
if (cb_cl.failures()) { |
|
442 |
*failures = true; |
|
443 |
} |
|
444 |
} |
|
445 |
||
35061 | 446 |
void HeapRegion::print() const { print_on(tty); } |
1374 | 447 |
void HeapRegion::print_on(outputStream* st) const { |
34671
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
448 |
st->print("|%4u", this->_hrm_index); |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
449 |
st->print("|" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT, |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
450 |
p2i(bottom()), p2i(top()), p2i(end())); |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
451 |
st->print("|%3d%%", (int) ((double) used() * 100 / capacity())); |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
452 |
st->print("|%2s", get_short_type_str()); |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
453 |
if (in_collection_set()) { |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
454 |
st->print("|CS"); |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
455 |
} else { |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
456 |
st->print("| "); |
1239543c7821
8144837: Improve the printout of heap regions in hs_err dump files.
david
parents:
34249
diff
changeset
|
457 |
} |
49607
acffe6ff3ae7
8180415: Rebuild remembered sets during the concurrent cycle
tschatzl
parents:
49603
diff
changeset
|
458 |
st->print_cr("|TAMS " PTR_FORMAT ", " PTR_FORMAT "| %s ", |
acffe6ff3ae7
8180415: Rebuild remembered sets during the concurrent cycle
tschatzl
parents:
49603
diff
changeset
|
459 |
p2i(prev_top_at_mark_start()), p2i(next_top_at_mark_start()), rem_set()->get_state_str()); |
1374 | 460 |
} |
461 |
||
50752 | 462 |
class G1VerificationClosure : public BasicOopIterateClosure { |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
463 |
protected: |
19339 | 464 |
G1CollectedHeap* _g1h; |
49164
7e958a8ebcd3
8195142: Refactor out card table from CardTableModRefBS to flatten the BarrierSet hierarchy
eosterlund
parents:
47885
diff
changeset
|
465 |
G1CardTable *_ct; |
19339 | 466 |
oop _containing_obj; |
467 |
bool _failures; |
|
468 |
int _n_failures; |
|
469 |
VerifyOption _vo; |
|
470 |
public: |
|
471 |
// _vo == UsePrevMarking -> use "prev" marking information, |
|
472 |
// _vo == UseNextMarking -> use "next" marking information, |
|
47885
5caa1d5f74c1
8186571: Implementation: JEP 307: Parallel Full GC for G1
sjohanss
parents:
47216
diff
changeset
|
473 |
// _vo == UseFullMarking -> use "next" marking bitmap but no TAMS. |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
474 |
G1VerificationClosure(G1CollectedHeap* g1h, VerifyOption vo) : |
49164
7e958a8ebcd3
8195142: Refactor out card table from CardTableModRefBS to flatten the BarrierSet hierarchy
eosterlund
parents:
47885
diff
changeset
|
475 |
_g1h(g1h), _ct(g1h->card_table()), |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
476 |
_containing_obj(NULL), _failures(false), _n_failures(0), _vo(vo) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
477 |
} |
19339 | 478 |
|
479 |
void set_containing_obj(oop obj) { |
|
480 |
_containing_obj = obj; |
|
481 |
} |
|
482 |
||
483 |
bool failures() { return _failures; } |
|
484 |
int n_failures() { return _n_failures; } |
|
485 |
||
486 |
void print_object(outputStream* out, oop obj) { |
|
487 |
#ifdef PRODUCT |
|
488 |
Klass* k = obj->klass(); |
|
33602 | 489 |
const char* class_name = k->external_name(); |
19339 | 490 |
out->print_cr("class name %s", class_name); |
491 |
#else // PRODUCT |
|
492 |
obj->print_on(out); |
|
493 |
#endif // PRODUCT |
|
494 |
} |
|
49647
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
495 |
|
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
496 |
// This closure provides its own oop verification code. |
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
497 |
debug_only(virtual bool should_verify_oops() { return false; }) |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
498 |
}; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
499 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
500 |
class VerifyLiveClosure : public G1VerificationClosure { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
501 |
public: |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
502 |
VerifyLiveClosure(G1CollectedHeap* g1h, VerifyOption vo) : G1VerificationClosure(g1h, vo) {} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
503 |
virtual void do_oop(narrowOop* p) { do_oop_work(p); } |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
504 |
virtual void do_oop(oop* p) { do_oop_work(p); } |
19339 | 505 |
|
506 |
template <class T> |
|
507 |
void do_oop_work(T* p) { |
|
508 |
assert(_containing_obj != NULL, "Precondition"); |
|
509 |
assert(!_g1h->is_obj_dead_cond(_containing_obj, _vo), |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
510 |
"Precondition"); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
511 |
verify_liveness(p); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
512 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
513 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
514 |
template <class T> |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
515 |
void verify_liveness(T* p) { |
49592
77fb0be7d19f
8199946: Move load/store and encode/decode out of oopDesc
stefank
parents:
49323
diff
changeset
|
516 |
T heap_oop = RawAccess<>::oop_load(p); |
37242 | 517 |
Log(gc, verify) log; |
49592
77fb0be7d19f
8199946: Move load/store and encode/decode out of oopDesc
stefank
parents:
49323
diff
changeset
|
518 |
if (!CompressedOops::is_null(heap_oop)) { |
77fb0be7d19f
8199946: Move load/store and encode/decode out of oopDesc
stefank
parents:
49323
diff
changeset
|
519 |
oop obj = CompressedOops::decode_not_null(heap_oop); |
19339 | 520 |
bool failed = false; |
54375
a5ce9300462f
8221648: Remove CollectedHeap::is_in_closed_subset()
pliden
parents:
53985
diff
changeset
|
521 |
if (!_g1h->is_in(obj) || _g1h->is_obj_dead_cond(obj, _vo)) { |
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54465
diff
changeset
|
522 |
MutexLocker x(ParGCRareEvent_lock, |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
523 |
Mutex::_no_safepoint_check_flag); |
19339 | 524 |
|
525 |
if (!_failures) { |
|
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
526 |
log.error("----------"); |
19339 | 527 |
} |
35061 | 528 |
ResourceMark rm; |
54375
a5ce9300462f
8221648: Remove CollectedHeap::is_in_closed_subset()
pliden
parents:
53985
diff
changeset
|
529 |
if (!_g1h->is_in(obj)) { |
19339 | 530 |
HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); |
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
531 |
log.error("Field " PTR_FORMAT " of live obj " PTR_FORMAT " in region " HR_FORMAT, |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
532 |
p2i(p), p2i(_containing_obj), HR_FORMAT_PARAMS(from)); |
46701
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
533 |
LogStream ls(log.error()); |
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
534 |
print_object(&ls, _containing_obj); |
49607
acffe6ff3ae7
8180415: Rebuild remembered sets during the concurrent cycle
tschatzl
parents:
49603
diff
changeset
|
535 |
HeapRegion* const to = _g1h->heap_region_containing(obj); |
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
536 |
log.error("points to obj " PTR_FORMAT " in region " HR_FORMAT " remset %s", |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
537 |
p2i(obj), HR_FORMAT_PARAMS(to), to->rem_set()->get_state_str()); |
19339 | 538 |
} else { |
539 |
HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
540 |
HeapRegion* to = _g1h->heap_region_containing((HeapWord*)obj); |
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
541 |
log.error("Field " PTR_FORMAT " of live obj " PTR_FORMAT " in region " HR_FORMAT, |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
542 |
p2i(p), p2i(_containing_obj), HR_FORMAT_PARAMS(from)); |
46701
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
543 |
LogStream ls(log.error()); |
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
544 |
print_object(&ls, _containing_obj); |
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
545 |
log.error("points to dead obj " PTR_FORMAT " in region " HR_FORMAT, |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
546 |
p2i(obj), HR_FORMAT_PARAMS(to)); |
46701
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
547 |
print_object(&ls, obj); |
19339 | 548 |
} |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
549 |
log.error("----------"); |
19339 | 550 |
_failures = true; |
551 |
failed = true; |
|
552 |
_n_failures++; |
|
553 |
} |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
554 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
555 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
556 |
}; |
19339 | 557 |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
558 |
class VerifyRemSetClosure : public G1VerificationClosure { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
559 |
public: |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
560 |
VerifyRemSetClosure(G1CollectedHeap* g1h, VerifyOption vo) : G1VerificationClosure(g1h, vo) {} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
561 |
virtual void do_oop(narrowOop* p) { do_oop_work(p); } |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
562 |
virtual void do_oop(oop* p) { do_oop_work(p); } |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
563 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
564 |
template <class T> |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
565 |
void do_oop_work(T* p) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
566 |
assert(_containing_obj != NULL, "Precondition"); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
567 |
assert(!_g1h->is_obj_dead_cond(_containing_obj, _vo), |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
568 |
"Precondition"); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
569 |
verify_remembered_set(p); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
570 |
} |
19339 | 571 |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
572 |
template <class T> |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
573 |
void verify_remembered_set(T* p) { |
49592
77fb0be7d19f
8199946: Move load/store and encode/decode out of oopDesc
stefank
parents:
49323
diff
changeset
|
574 |
T heap_oop = RawAccess<>::oop_load(p); |
37242 | 575 |
Log(gc, verify) log; |
49592
77fb0be7d19f
8199946: Move load/store and encode/decode out of oopDesc
stefank
parents:
49323
diff
changeset
|
576 |
if (!CompressedOops::is_null(heap_oop)) { |
77fb0be7d19f
8199946: Move load/store and encode/decode out of oopDesc
stefank
parents:
49323
diff
changeset
|
577 |
oop obj = CompressedOops::decode_not_null(heap_oop); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
578 |
HeapRegion* from = _g1h->heap_region_containing((HeapWord*)p); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
579 |
HeapRegion* to = _g1h->heap_region_containing(obj); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
580 |
if (from != NULL && to != NULL && |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
581 |
from != to && |
49607
acffe6ff3ae7
8180415: Rebuild remembered sets during the concurrent cycle
tschatzl
parents:
49603
diff
changeset
|
582 |
!to->is_pinned() && |
acffe6ff3ae7
8180415: Rebuild remembered sets during the concurrent cycle
tschatzl
parents:
49603
diff
changeset
|
583 |
to->rem_set()->is_complete()) { |
49164
7e958a8ebcd3
8195142: Refactor out card table from CardTableModRefBS to flatten the BarrierSet hierarchy
eosterlund
parents:
47885
diff
changeset
|
584 |
jbyte cv_obj = *_ct->byte_for_const(_containing_obj); |
7e958a8ebcd3
8195142: Refactor out card table from CardTableModRefBS to flatten the BarrierSet hierarchy
eosterlund
parents:
47885
diff
changeset
|
585 |
jbyte cv_field = *_ct->byte_for_const(p); |
7e958a8ebcd3
8195142: Refactor out card table from CardTableModRefBS to flatten the BarrierSet hierarchy
eosterlund
parents:
47885
diff
changeset
|
586 |
const jbyte dirty = G1CardTable::dirty_card_val(); |
19339 | 587 |
|
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
588 |
bool is_bad = !(from->is_young() |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
589 |
|| to->rem_set()->contains_reference(p) |
46611
3b8b1f7ee3b4
8153360: G1HRRSFlushLogBuffersOnVerify with remembered set verification does not work
ehelin
parents:
46520
diff
changeset
|
590 |
|| (_containing_obj->is_objArray() ? |
3b8b1f7ee3b4
8153360: G1HRRSFlushLogBuffersOnVerify with remembered set verification does not work
ehelin
parents:
46520
diff
changeset
|
591 |
cv_field == dirty : |
3b8b1f7ee3b4
8153360: G1HRRSFlushLogBuffersOnVerify with remembered set verification does not work
ehelin
parents:
46520
diff
changeset
|
592 |
cv_obj == dirty || cv_field == dirty)); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
593 |
if (is_bad) { |
54623
1126f0607c70
8222811: Consolidate MutexLockerEx and MutexLocker
coleenp
parents:
54465
diff
changeset
|
594 |
MutexLocker x(ParGCRareEvent_lock, |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
595 |
Mutex::_no_safepoint_check_flag); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
596 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
597 |
if (!_failures) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
598 |
log.error("----------"); |
19339 | 599 |
} |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
600 |
log.error("Missing rem set entry:"); |
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
601 |
log.error("Field " PTR_FORMAT " of obj " PTR_FORMAT " in region " HR_FORMAT, |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
602 |
p2i(p), p2i(_containing_obj), HR_FORMAT_PARAMS(from)); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
603 |
ResourceMark rm; |
46701
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
604 |
LogStream ls(log.error()); |
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
605 |
_containing_obj->print_on(&ls); |
53839
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
606 |
log.error("points to obj " PTR_FORMAT " in region " HR_FORMAT " remset %s", |
31dde2f0ddf1
8219098: Make output of region strings more regular in error messages
tschatzl
parents:
53034
diff
changeset
|
607 |
p2i(obj), HR_FORMAT_PARAMS(to), to->rem_set()->get_state_str()); |
46968
9119841280f4
8160399: is_oop_or_null involves undefined behavior
coleenp
parents:
46810
diff
changeset
|
608 |
if (oopDesc::is_oop(obj)) { |
46701
f559541c0daa
8181917: Refactor UL LogStreams to avoid using resource area
stuefe
parents:
46630
diff
changeset
|
609 |
obj->print_on(&ls); |
36394
fe27b66d3519
8150002: Check for the validity of oop before printing it in verify_remembered_set
poonam
parents:
36098
diff
changeset
|
610 |
} |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
611 |
log.error("Obj head CTE = %d, field CTE = %d.", cv_obj, cv_field); |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
612 |
log.error("----------"); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
613 |
_failures = true; |
46258
d26ebd7e2f10
8142749: HeapRegion::_predicted_bytes_to_copy is unused and can be removed
fzhinkin
parents:
42650
diff
changeset
|
614 |
_n_failures++; |
19339 | 615 |
} |
616 |
} |
|
617 |
} |
|
618 |
} |
|
619 |
}; |
|
3000 | 620 |
|
46307
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
621 |
// Closure that applies the given two closures in sequence. |
50752 | 622 |
class G1Mux2Closure : public BasicOopIterateClosure { |
46307
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
623 |
OopClosure* _c1; |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
624 |
OopClosure* _c2; |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
625 |
public: |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
626 |
G1Mux2Closure(OopClosure *c1, OopClosure *c2) { _c1 = c1; _c2 = c2; } |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
627 |
template <class T> inline void do_oop_work(T* p) { |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
628 |
// Apply first closure; then apply the second. |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
629 |
_c1->do_oop(p); |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
630 |
_c2->do_oop(p); |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
631 |
} |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
632 |
virtual inline void do_oop(oop* p) { do_oop_work(p); } |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
633 |
virtual inline void do_oop(narrowOop* p) { do_oop_work(p); } |
49647
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
634 |
|
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
635 |
// This closure provides its own oop verification code. |
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
636 |
debug_only(virtual bool should_verify_oops() { return false; }) |
46307
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
637 |
}; |
686d50172bfd
8071278: Fix the closure mess in G1RemSet::refine_card()
tschatzl
parents:
46286
diff
changeset
|
638 |
|
1374 | 639 |
// This really ought to be commoned up into OffsetTableContigSpace somehow. |
640 |
// We would need a mechanism to make that code skip dead objects. |
|
641 |
||
12379 | 642 |
void HeapRegion::verify(VerifyOption vo, |
4023
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
643 |
bool* failures) const { |
49806 | 644 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
4023
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
645 |
*failures = false; |
1374 | 646 |
HeapWord* p = bottom(); |
647 |
HeapWord* prev_p = NULL; |
|
49806 | 648 |
VerifyLiveClosure vl_cl(g1h, vo); |
649 |
VerifyRemSetClosure vr_cl(g1h, vo); |
|
26846
7d4376f8560e
8058495: G1: normalize names for isHumongous() and friends
tonyp
parents:
26840
diff
changeset
|
650 |
bool is_region_humongous = is_humongous(); |
6260
fba83fd3adc7
6974928: G1: sometimes humongous objects are allocated in young regions
tonyp
parents:
6247
diff
changeset
|
651 |
size_t object_num = 0; |
1374 | 652 |
while (p < top()) { |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
653 |
oop obj = oop(p); |
25481
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
654 |
size_t obj_size = block_size(p); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
655 |
object_num += 1; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
656 |
|
49806 | 657 |
if (!g1h->is_obj_dead_cond(obj, this, vo)) { |
46968
9119841280f4
8160399: is_oop_or_null involves undefined behavior
coleenp
parents:
46810
diff
changeset
|
658 |
if (oopDesc::is_oop(obj)) { |
13728
882756847a04
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
13482
diff
changeset
|
659 |
Klass* klass = obj->klass(); |
49603
6ce4db4460ca
8199007: ClassLoaderDataGraph::unload_list_contains() is wrong
coleenp
parents:
49592
diff
changeset
|
660 |
bool is_metaspace_object = Metaspace::contains(klass); |
25492
d27050bdfb04
8049421: G1 Class Unloading after completing a concurrent mark cycle
stefank
parents:
25491
diff
changeset
|
661 |
if (!is_metaspace_object) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
662 |
log_error(gc, verify)("klass " PTR_FORMAT " of object " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
663 |
"not metadata", p2i(klass), p2i(obj)); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
664 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
665 |
return; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
666 |
} else if (!klass->is_klass()) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
667 |
log_error(gc, verify)("klass " PTR_FORMAT " of object " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
668 |
"not a klass", p2i(klass), p2i(obj)); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
669 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
670 |
return; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
671 |
} else { |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
672 |
vl_cl.set_containing_obj(obj); |
49806 | 673 |
if (!g1h->collector_state()->in_full_gc() || G1VerifyRSetsDuringFullGC) { |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
674 |
// verify liveness and rem_set |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
675 |
vr_cl.set_containing_obj(obj); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
676 |
G1Mux2Closure mux(&vl_cl, &vr_cl); |
49647
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
677 |
obj->oop_iterate(&mux); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
678 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
679 |
if (vr_cl.failures()) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
680 |
*failures = true; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
681 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
682 |
if (G1MaxVerifyFailures >= 0 && |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
683 |
vr_cl.n_failures() >= G1MaxVerifyFailures) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
684 |
return; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
685 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
686 |
} else { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
687 |
// verify only liveness |
49647
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
688 |
obj->oop_iterate(&vl_cl); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
689 |
} |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
690 |
if (vl_cl.failures()) { |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
691 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
692 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
693 |
if (G1MaxVerifyFailures >= 0 && |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
694 |
vl_cl.n_failures() >= G1MaxVerifyFailures) { |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
695 |
return; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
696 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
697 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
698 |
} else { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
699 |
log_error(gc, verify)(PTR_FORMAT " not an oop", p2i(obj)); |
4023
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
700 |
*failures = true; |
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
701 |
return; |
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
702 |
} |
1374 | 703 |
} |
704 |
prev_p = p; |
|
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
705 |
p += obj_size; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
706 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
707 |
|
26571
5fe42815e865
8025564: gc/memory/UniThread/Linear1 times out during heap verification
brutisso
parents:
26422
diff
changeset
|
708 |
if (!is_young() && !is_empty()) { |
35461 | 709 |
_bot_part.verify(); |
26571
5fe42815e865
8025564: gc/memory/UniThread/Linear1 times out during heap verification
brutisso
parents:
26422
diff
changeset
|
710 |
} |
5fe42815e865
8025564: gc/memory/UniThread/Linear1 times out during heap verification
brutisso
parents:
26422
diff
changeset
|
711 |
|
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
712 |
if (is_region_humongous) { |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
713 |
oop obj = oop(this->humongous_start_region()->bottom()); |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
714 |
if ((HeapWord*)obj > bottom() || (HeapWord*)obj + obj->size() < bottom()) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
715 |
log_error(gc, verify)("this humongous region is not part of its' humongous object " PTR_FORMAT, p2i(obj)); |
36091
fd10d4ee314a
8149542: Missing failure reporting in HeapRegion::verify
brutisso
parents:
36090
diff
changeset
|
716 |
*failures = true; |
fd10d4ee314a
8149542: Missing failure reporting in HeapRegion::verify
brutisso
parents:
36090
diff
changeset
|
717 |
return; |
33786
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
718 |
} |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
719 |
} |
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
720 |
|
ac8da6513351
8139867: Change how startsHumongous and continuesHumongous regions work in G1.
david
parents:
33602
diff
changeset
|
721 |
if (!is_region_humongous && p != top()) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
722 |
log_error(gc, verify)("end of last object " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
723 |
"does not match top " PTR_FORMAT, p2i(p), p2i(top())); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
724 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
725 |
return; |
1374 | 726 |
} |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
727 |
|
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
728 |
HeapWord* the_end = end(); |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
729 |
// Do some extra BOT consistency checking for addresses in the |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
730 |
// range [top, end). BOT look-ups in this range should yield |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
731 |
// top. No point in doing that if top == end (there's nothing there). |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
732 |
if (p < the_end) { |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
733 |
// Look up top |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
734 |
HeapWord* addr_1 = p; |
35461 | 735 |
HeapWord* b_start_1 = _bot_part.block_start_const(addr_1); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
736 |
if (b_start_1 != p) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
737 |
log_error(gc, verify)("BOT look up for top: " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
738 |
" yielded " PTR_FORMAT ", expecting " PTR_FORMAT, |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
739 |
p2i(addr_1), p2i(b_start_1), p2i(p)); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
740 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
741 |
return; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
742 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
743 |
|
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
744 |
// Look up top + 1 |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
745 |
HeapWord* addr_2 = p + 1; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
746 |
if (addr_2 < the_end) { |
35461 | 747 |
HeapWord* b_start_2 = _bot_part.block_start_const(addr_2); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
748 |
if (b_start_2 != p) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
749 |
log_error(gc, verify)("BOT look up for top + 1: " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
750 |
" yielded " PTR_FORMAT ", expecting " PTR_FORMAT, |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
751 |
p2i(addr_2), p2i(b_start_2), p2i(p)); |
4023
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
752 |
*failures = true; |
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
753 |
return; |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
754 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
755 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
756 |
|
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
757 |
// Look up an address between top and end |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
758 |
size_t diff = pointer_delta(the_end, p) / 2; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
759 |
HeapWord* addr_3 = p + diff; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
760 |
if (addr_3 < the_end) { |
35461 | 761 |
HeapWord* b_start_3 = _bot_part.block_start_const(addr_3); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
762 |
if (b_start_3 != p) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
763 |
log_error(gc, verify)("BOT look up for top + diff: " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
764 |
" yielded " PTR_FORMAT ", expecting " PTR_FORMAT, |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
765 |
p2i(addr_3), p2i(b_start_3), p2i(p)); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
766 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
767 |
return; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
768 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
769 |
} |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
770 |
|
22551 | 771 |
// Look up end - 1 |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
772 |
HeapWord* addr_4 = the_end - 1; |
35461 | 773 |
HeapWord* b_start_4 = _bot_part.block_start_const(addr_4); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
774 |
if (b_start_4 != p) { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
775 |
log_error(gc, verify)("BOT look up for end - 1: " PTR_FORMAT " " |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
776 |
" yielded " PTR_FORMAT ", expecting " PTR_FORMAT, |
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
777 |
p2i(addr_4), p2i(b_start_4), p2i(p)); |
7904
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
778 |
*failures = true; |
e90e097fced4
7007068: G1: refine the BOT during evac failure handling
tonyp
parents:
7397
diff
changeset
|
779 |
return; |
4023
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
780 |
} |
1374 | 781 |
} |
4023
6c3401503290
6882730: G1: parallel heap verification messes up region dump
tonyp
parents:
3697
diff
changeset
|
782 |
|
19339 | 783 |
verify_strong_code_roots(vo, failures); |
784 |
} |
|
785 |
||
786 |
void HeapRegion::verify() const { |
|
787 |
bool dummy = false; |
|
788 |
verify(VerifyOption_G1UsePrevMarking, /* failures */ &dummy); |
|
1374 | 789 |
} |
790 |
||
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
791 |
void HeapRegion::verify_rem_set(VerifyOption vo, bool* failures) const { |
49806 | 792 |
G1CollectedHeap* g1h = G1CollectedHeap::heap(); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
793 |
*failures = false; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
794 |
HeapWord* p = bottom(); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
795 |
HeapWord* prev_p = NULL; |
49806 | 796 |
VerifyRemSetClosure vr_cl(g1h, vo); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
797 |
while (p < top()) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
798 |
oop obj = oop(p); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
799 |
size_t obj_size = block_size(p); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
800 |
|
49806 | 801 |
if (!g1h->is_obj_dead_cond(obj, this, vo)) { |
46968
9119841280f4
8160399: is_oop_or_null involves undefined behavior
coleenp
parents:
46810
diff
changeset
|
802 |
if (oopDesc::is_oop(obj)) { |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
803 |
vr_cl.set_containing_obj(obj); |
49647
5a757c0326c7
8200362: G1Mux2Closure should disable implicit oop verification
tschatzl
parents:
49643
diff
changeset
|
804 |
obj->oop_iterate(&vr_cl); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
805 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
806 |
if (vr_cl.failures()) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
807 |
*failures = true; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
808 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
809 |
if (G1MaxVerifyFailures >= 0 && |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
810 |
vr_cl.n_failures() >= G1MaxVerifyFailures) { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
811 |
return; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
812 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
813 |
} else { |
36090
cffc1dd98258
8149541: Use log_error() instead of log_info() when verification reports a problem
brutisso
parents:
35908
diff
changeset
|
814 |
log_error(gc, verify)(PTR_FORMAT " not an oop", p2i(obj)); |
35507
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
815 |
*failures = true; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
816 |
return; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
817 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
818 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
819 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
820 |
prev_p = p; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
821 |
p += obj_size; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
822 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
823 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
824 |
|
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
825 |
void HeapRegion::verify_rem_set() const { |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
826 |
bool failures = false; |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
827 |
verify_rem_set(VerifyOption_G1UsePrevMarking, &failures); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
828 |
guarantee(!failures, "HeapRegion RemSet verification failed"); |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
829 |
} |
aa2affc60a2f
8145442: Add the facility to verify remembered sets for G1
poonam
parents:
35461
diff
changeset
|
830 |
|
27624
fe43edc5046d
8043243: convert SCAN_AND_FORWARD, SCAN_AND_ADJUST_POINTERS, SCAN_AND_COMPACT macros to methods
mlarsson
parents:
27009
diff
changeset
|
831 |
void HeapRegion::prepare_for_compaction(CompactPoint* cp) { |
47885
5caa1d5f74c1
8186571: Implementation: JEP 307: Parallel Full GC for G1
sjohanss
parents:
47216
diff
changeset
|
832 |
// Not used for G1 anymore, but pure virtual in Space. |
5caa1d5f74c1
8186571: Implementation: JEP 307: Parallel Full GC for G1
sjohanss
parents:
47216
diff
changeset
|
833 |
ShouldNotReachHere(); |
27624
fe43edc5046d
8043243: convert SCAN_AND_FORWARD, SCAN_AND_ADJUST_POINTERS, SCAN_AND_COMPACT macros to methods
mlarsson
parents:
27009
diff
changeset
|
834 |
} |
fe43edc5046d
8043243: convert SCAN_AND_FORWARD, SCAN_AND_ADJUST_POINTERS, SCAN_AND_COMPACT macros to methods
mlarsson
parents:
27009
diff
changeset
|
835 |
|
1374 | 836 |
// G1OffsetTableContigSpace code; copied from space.cpp. Hope this can go |
837 |
// away eventually. |
|
838 |
||
35461 | 839 |
void G1ContiguousSpace::clear(bool mangle_space) { |
25481
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
840 |
set_top(bottom()); |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
841 |
CompactibleSpace::clear(mangle_space); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25730
diff
changeset
|
842 |
reset_bot(); |
1374 | 843 |
} |
29681 | 844 |
#ifndef PRODUCT |
35461 | 845 |
void G1ContiguousSpace::mangle_unused_area() { |
29681 | 846 |
mangle_unused_area_complete(); |
847 |
} |
|
848 |
||
35461 | 849 |
void G1ContiguousSpace::mangle_unused_area_complete() { |
29681 | 850 |
SpaceMangler::mangle_region(MemRegion(top(), end())); |
851 |
} |
|
852 |
#endif |
|
853 |
||
35461 | 854 |
void G1ContiguousSpace::print() const { |
1374 | 855 |
print_short(); |
35061 | 856 |
tty->print_cr(" [" INTPTR_FORMAT ", " INTPTR_FORMAT ", " |
1374 | 857 |
INTPTR_FORMAT ", " INTPTR_FORMAT ")", |
35461 | 858 |
p2i(bottom()), p2i(top()), p2i(_bot_part.threshold()), p2i(end())); |
1374 | 859 |
} |
860 |
||
35461 | 861 |
HeapWord* G1ContiguousSpace::initialize_threshold() { |
862 |
return _bot_part.initialize_threshold(); |
|
1374 | 863 |
} |
864 |
||
35461 | 865 |
HeapWord* G1ContiguousSpace::cross_threshold(HeapWord* start, |
1374 | 866 |
HeapWord* end) { |
35461 | 867 |
_bot_part.alloc_block(start, end); |
868 |
return _bot_part.threshold(); |
|
1374 | 869 |
} |
870 |
||
35461 | 871 |
void G1ContiguousSpace::safe_object_iterate(ObjectClosure* blk) { |
25481
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
872 |
object_iterate(blk); |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
873 |
} |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
874 |
|
35461 | 875 |
void G1ContiguousSpace::object_iterate(ObjectClosure* blk) { |
25481
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
876 |
HeapWord* p = bottom(); |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
877 |
while (p < top()) { |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
878 |
if (block_is_obj(p)) { |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
879 |
blk->do_object(oop(p)); |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
880 |
} |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
881 |
p += block_size(p); |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
882 |
} |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
883 |
} |
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
884 |
|
35461 | 885 |
G1ContiguousSpace::G1ContiguousSpace(G1BlockOffsetTable* bot) : |
53034
de99beff5c0e
8214946: G1: Initialize all class members on construction
lkorinth
parents:
52897
diff
changeset
|
886 |
_top(NULL), |
35461 | 887 |
_bot_part(bot, this), |
53034
de99beff5c0e
8214946: G1: Initialize all class members on construction
lkorinth
parents:
52897
diff
changeset
|
888 |
_par_alloc_lock(Mutex::leaf, "OffsetTableContigSpace par alloc lock", true), |
de99beff5c0e
8214946: G1: Initialize all class members on construction
lkorinth
parents:
52897
diff
changeset
|
889 |
_pre_dummy_top(NULL) |
1374 | 890 |
{ |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25730
diff
changeset
|
891 |
} |
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25730
diff
changeset
|
892 |
|
35461 | 893 |
void G1ContiguousSpace::initialize(MemRegion mr, bool clear_space, bool mangle_space) { |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25730
diff
changeset
|
894 |
CompactibleSpace::initialize(mr, clear_space, mangle_space); |
25481
1427aa24638c
8047818: G1 HeapRegions can no longer be ContiguousSpaces
mgerdin
parents:
25479
diff
changeset
|
895 |
_top = bottom(); |
27889
7d50f95e0076
8065358: Refactor G1s usage of save_marks and reduce related races
mgerdin
parents:
27681
diff
changeset
|
896 |
set_saved_mark_word(NULL); |
26157
70eddb655686
8054818: Refactor HeapRegionSeq to manage heap region and auxiliary data
tschatzl
parents:
25730
diff
changeset
|
897 |
reset_bot(); |
1374 | 898 |
} |