author | jmasa |
Fri, 01 Apr 2016 12:32:34 -0700 | |
changeset 38170 | ff88a25a7799 |
parent 38074 | 8475fdc6dcc3 |
child 38250 | 37d739fb07fc |
permissions | -rw-r--r-- |
1 | 1 |
/* |
37248 | 2 |
* Copyright (c) 2005, 2016, 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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||
7397 | 25 |
#include "precompiled.hpp" |
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#include "classfile/systemDictionary.hpp" |
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#include "code/codeCache.hpp" |
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30764 | 28 |
#include "gc/parallel/parallelScavengeHeap.hpp" |
29 |
#include "gc/parallel/pcTasks.hpp" |
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30 |
#include "gc/parallel/psCompactionManager.inline.hpp" |
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#include "gc/parallel/psParallelCompact.hpp" |
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#include "gc/shared/collectedHeap.hpp" |
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#include "gc/shared/gcTimer.hpp" |
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35061 | 34 |
#include "gc/shared/gcTraceTime.inline.hpp" |
35 |
#include "logging/log.hpp" |
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37248 | 36 |
#include "memory/resourceArea.hpp" |
7397 | 37 |
#include "memory/universe.hpp" |
38 |
#include "oops/objArrayKlass.inline.hpp" |
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39 |
#include "oops/oop.inline.hpp" |
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40 |
#include "prims/jvmtiExport.hpp" |
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41 |
#include "runtime/fprofiler.hpp" |
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42 |
#include "runtime/jniHandles.hpp" |
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43 |
#include "runtime/thread.hpp" |
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44 |
#include "runtime/vmThread.hpp" |
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#include "services/management.hpp" |
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#include "utilities/stack.inline.hpp" |
1 | 47 |
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// |
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49 |
// ThreadRootsMarkingTask |
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50 |
// |
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52 |
void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) { |
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
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ResourceMark rm; |
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ParCompactionManager* cm = |
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ParCompactionManager::gc_thread_compaction_manager(which); |
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59 |
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); |
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MarkingCodeBlobClosure mark_and_push_in_blobs(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations); |
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if (_java_thread != NULL) |
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_java_thread->oops_do( |
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&mark_and_push_closure, |
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&mark_and_push_in_blobs); |
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if (_vm_thread != NULL) |
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_vm_thread->oops_do( |
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&mark_and_push_closure, |
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&mark_and_push_in_blobs); |
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// Do the real work |
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cm->follow_marking_stacks(); |
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} |
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void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { |
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
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ParCompactionManager* cm = |
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ParCompactionManager::gc_thread_compaction_manager(which); |
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); |
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ParCompactionManager::FollowKlassClosure follow_klass_closure(&mark_and_push_closure); |
1 | 85 |
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switch (_root_type) { |
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case universe: |
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Universe::oops_do(&mark_and_push_closure); |
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break; |
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case jni_handles: |
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JNIHandles::oops_do(&mark_and_push_closure); |
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break; |
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case threads: |
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{ |
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ResourceMark rm; |
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MarkingCodeBlobClosure each_active_code_blob(&mark_and_push_closure, !CodeBlobToOopClosure::FixRelocations); |
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Threads::oops_do(&mark_and_push_closure, &each_active_code_blob); |
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} |
101 |
break; |
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case object_synchronizer: |
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ObjectSynchronizer::oops_do(&mark_and_push_closure); |
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break; |
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case flat_profiler: |
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FlatProfiler::oops_do(&mark_and_push_closure); |
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break; |
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case management: |
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Management::oops_do(&mark_and_push_closure); |
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break; |
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case jvmti: |
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JvmtiExport::oops_do(&mark_and_push_closure); |
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break; |
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case system_dictionary: |
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SystemDictionary::always_strong_oops_do(&mark_and_push_closure); |
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break; |
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case class_loader_data: |
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ClassLoaderDataGraph::always_strong_oops_do(&mark_and_push_closure, &follow_klass_closure, true); |
1 | 125 |
break; |
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case code_cache: |
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// Do not treat nmethods as strong roots for mark/sweep, since we can unload them. |
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//CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); |
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break; |
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131 |
|
1 | 132 |
default: |
133 |
fatal("Unknown root type"); |
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} |
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// Do the real work |
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cm->follow_marking_stacks(); |
1 | 138 |
} |
139 |
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140 |
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141 |
// |
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// RefProcTaskProxy |
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// |
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144 |
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void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) |
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{ |
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
1 | 148 |
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149 |
ParCompactionManager* cm = |
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150 |
ParCompactionManager::gc_thread_compaction_manager(which); |
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); |
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ParCompactionManager::FollowStackClosure follow_stack_closure(cm); |
1 | 153 |
_rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), |
154 |
mark_and_push_closure, follow_stack_closure); |
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155 |
} |
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156 |
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157 |
// |
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158 |
// RefProcTaskExecutor |
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159 |
// |
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160 |
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161 |
void RefProcTaskExecutor::execute(ProcessTask& task) |
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162 |
{ |
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ParallelScavengeHeap* heap = ParallelScavengeHeap::heap(); |
1 | 164 |
uint parallel_gc_threads = heap->gc_task_manager()->workers(); |
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uint active_gc_threads = heap->gc_task_manager()->active_workers(); |
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OopTaskQueueSet* qset = ParCompactionManager::stack_array(); |
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167 |
ParallelTaskTerminator terminator(active_gc_threads, qset); |
1 | 168 |
GCTaskQueue* q = GCTaskQueue::create(); |
169 |
for(uint i=0; i<parallel_gc_threads; i++) { |
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170 |
q->enqueue(new RefProcTaskProxy(task, i)); |
|
171 |
} |
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172 |
if (task.marks_oops_alive()) { |
|
173 |
if (parallel_gc_threads>1) { |
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174 |
for (uint j=0; j<active_gc_threads; j++) { |
1 | 175 |
q->enqueue(new StealMarkingTask(&terminator)); |
176 |
} |
|
177 |
} |
|
178 |
} |
|
179 |
PSParallelCompact::gc_task_manager()->execute_and_wait(q); |
|
180 |
} |
|
181 |
||
182 |
void RefProcTaskExecutor::execute(EnqueueTask& task) |
|
183 |
{ |
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184 |
ParallelScavengeHeap* heap = ParallelScavengeHeap::heap(); |
1 | 185 |
uint parallel_gc_threads = heap->gc_task_manager()->workers(); |
186 |
GCTaskQueue* q = GCTaskQueue::create(); |
|
187 |
for(uint i=0; i<parallel_gc_threads; i++) { |
|
188 |
q->enqueue(new RefEnqueueTaskProxy(task, i)); |
|
189 |
} |
|
190 |
PSParallelCompact::gc_task_manager()->execute_and_wait(q); |
|
191 |
} |
|
192 |
||
193 |
// |
|
194 |
// StealMarkingTask |
|
195 |
// |
|
196 |
||
197 |
StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : |
|
198 |
_terminator(t) {} |
|
199 |
||
200 |
void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { |
|
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201 |
assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
1 | 202 |
|
203 |
ParCompactionManager* cm = |
|
204 |
ParCompactionManager::gc_thread_compaction_manager(which); |
|
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205 |
ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); |
1 | 206 |
|
207 |
oop obj = NULL; |
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208 |
ObjArrayTask task; |
1 | 209 |
int random_seed = 17; |
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210 |
do { |
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|
211 |
while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { |
29792
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212 |
cm->follow_contents((objArrayOop)task.obj(), task.index()); |
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213 |
cm->follow_marking_stacks(); |
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|
214 |
} |
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|
215 |
while (ParCompactionManager::steal(which, &random_seed, obj)) { |
29792
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216 |
cm->follow_contents(obj); |
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|
217 |
cm->follow_marking_stacks(); |
1 | 218 |
} |
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219 |
} while (!terminator()->offer_termination()); |
1 | 220 |
} |
221 |
||
222 |
// |
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223 |
// StealRegionCompactionTask |
1 | 224 |
// |
225 |
||
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|
226 |
StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): |
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|
227 |
_terminator(t) {} |
1 | 228 |
|
1407
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229 |
void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { |
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230 |
assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
1 | 231 |
|
232 |
ParCompactionManager* cm = |
|
233 |
ParCompactionManager::gc_thread_compaction_manager(which); |
|
234 |
||
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235 |
// Drain the stacks that have been preloaded with regions |
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236 |
// that are ready to fill. |
1 | 237 |
|
1407
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|
238 |
cm->drain_region_stacks(); |
1 | 239 |
|
38170
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|
240 |
guarantee(cm->region_stack()->is_empty(), "Not empty"); |
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|
241 |
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|
242 |
size_t region_index = 0; |
1 | 243 |
int random_seed = 17; |
244 |
||
245 |
while(true) { |
|
1407
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|
246 |
if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
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|
247 |
PSParallelCompact::fill_and_update_region(cm, region_index); |
9006b01ba3fd
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changeset
|
248 |
cm->drain_region_stacks(); |
1 | 249 |
} else { |
250 |
if (terminator()->offer_termination()) { |
|
251 |
break; |
|
252 |
} |
|
253 |
// Go around again. |
|
254 |
} |
|
255 |
} |
|
256 |
return; |
|
257 |
} |
|
258 |
||
259 |
UpdateDensePrefixTask::UpdateDensePrefixTask( |
|
260 |
PSParallelCompact::SpaceId space_id, |
|
1407
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|
261 |
size_t region_index_start, |
9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
670
diff
changeset
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262 |
size_t region_index_end) : |
9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
670
diff
changeset
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263 |
_space_id(space_id), _region_index_start(region_index_start), |
9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
670
diff
changeset
|
264 |
_region_index_end(region_index_end) {} |
1 | 265 |
|
266 |
void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { |
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ParCompactionManager* cm = |
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ParCompactionManager::gc_thread_compaction_manager(which); |
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270 |
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271 |
PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, |
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_space_id, |
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9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
670
diff
changeset
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273 |
_region_index_start, |
9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
jcoomes
parents:
670
diff
changeset
|
274 |
_region_index_end); |
1 | 275 |
} |