author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 47106 | hotspot/src/share/vm/gc/parallel/pcTasks.cpp@bed18a111b90 |
child 47580 | 96392e113a0a |
permissions | -rw-r--r-- |
1 | 1 |
/* |
47106 | 2 |
* Copyright (c) 2005, 2017, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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||
7397 | 25 |
#include "precompiled.hpp" |
42650 | 26 |
#include "aot/aotLoader.hpp" |
7397 | 27 |
#include "classfile/systemDictionary.hpp" |
28 |
#include "code/codeCache.hpp" |
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30764 | 29 |
#include "gc/parallel/parallelScavengeHeap.hpp" |
30 |
#include "gc/parallel/pcTasks.hpp" |
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#include "gc/parallel/psCompactionManager.inline.hpp" |
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#include "gc/parallel/psParallelCompact.inline.hpp" |
30764 | 33 |
#include "gc/shared/collectedHeap.hpp" |
34 |
#include "gc/shared/gcTimer.hpp" |
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35061 | 35 |
#include "gc/shared/gcTraceTime.inline.hpp" |
36 |
#include "logging/log.hpp" |
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37248 | 37 |
#include "memory/resourceArea.hpp" |
7397 | 38 |
#include "memory/universe.hpp" |
39 |
#include "oops/objArrayKlass.inline.hpp" |
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40 |
#include "oops/oop.inline.hpp" |
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41 |
#include "prims/jvmtiExport.hpp" |
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42 |
#include "runtime/jniHandles.hpp" |
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43 |
#include "runtime/thread.hpp" |
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#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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48 |
// |
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49 |
// ThreadRootsMarkingTask |
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50 |
// |
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51 |
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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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||
57 |
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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63 |
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); |
1 | 72 |
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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); |
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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); |
1 | 100 |
} |
101 |
break; |
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102 |
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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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107 |
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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113 |
break; |
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115 |
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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118 |
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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 | 121 |
break; |
122 |
||
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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)); |
42650 | 126 |
AOTLoader::oops_do(&mark_and_push_closure); |
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127 |
break; |
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128 |
|
1 | 129 |
default: |
130 |
fatal("Unknown root type"); |
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131 |
} |
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133 |
// Do the real work |
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cm->follow_marking_stacks(); |
1 | 135 |
} |
136 |
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137 |
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138 |
// |
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139 |
// RefProcTaskProxy |
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140 |
// |
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141 |
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142 |
void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) |
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143 |
{ |
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assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
1 | 145 |
|
146 |
ParCompactionManager* cm = |
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147 |
ParCompactionManager::gc_thread_compaction_manager(which); |
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ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); |
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149 |
ParCompactionManager::FollowStackClosure follow_stack_closure(cm); |
1 | 150 |
_rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), |
151 |
mark_and_push_closure, follow_stack_closure); |
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152 |
} |
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153 |
||
154 |
// |
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155 |
// RefProcTaskExecutor |
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156 |
// |
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157 |
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158 |
void RefProcTaskExecutor::execute(ProcessTask& task) |
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159 |
{ |
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ParallelScavengeHeap* heap = ParallelScavengeHeap::heap(); |
1 | 161 |
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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164 |
ParallelTaskTerminator terminator(active_gc_threads, qset); |
1 | 165 |
GCTaskQueue* q = GCTaskQueue::create(); |
166 |
for(uint i=0; i<parallel_gc_threads; i++) { |
|
167 |
q->enqueue(new RefProcTaskProxy(task, i)); |
|
168 |
} |
|
169 |
if (task.marks_oops_alive()) { |
|
170 |
if (parallel_gc_threads>1) { |
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171 |
for (uint j=0; j<active_gc_threads; j++) { |
1 | 172 |
q->enqueue(new StealMarkingTask(&terminator)); |
173 |
} |
|
174 |
} |
|
175 |
} |
|
176 |
PSParallelCompact::gc_task_manager()->execute_and_wait(q); |
|
177 |
} |
|
178 |
||
179 |
void RefProcTaskExecutor::execute(EnqueueTask& task) |
|
180 |
{ |
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181 |
ParallelScavengeHeap* heap = ParallelScavengeHeap::heap(); |
1 | 182 |
uint parallel_gc_threads = heap->gc_task_manager()->workers(); |
183 |
GCTaskQueue* q = GCTaskQueue::create(); |
|
184 |
for(uint i=0; i<parallel_gc_threads; i++) { |
|
185 |
q->enqueue(new RefEnqueueTaskProxy(task, i)); |
|
186 |
} |
|
187 |
PSParallelCompact::gc_task_manager()->execute_and_wait(q); |
|
188 |
} |
|
189 |
||
190 |
// |
|
191 |
// StealMarkingTask |
|
192 |
// |
|
193 |
||
194 |
StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : |
|
195 |
_terminator(t) {} |
|
196 |
||
197 |
void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { |
|
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198 |
assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
1 | 199 |
|
200 |
ParCompactionManager* cm = |
|
201 |
ParCompactionManager::gc_thread_compaction_manager(which); |
|
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|
202 |
ParCompactionManager::MarkAndPushClosure mark_and_push_closure(cm); |
1 | 203 |
|
204 |
oop obj = NULL; |
|
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205 |
ObjArrayTask task; |
1 | 206 |
int random_seed = 17; |
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207 |
do { |
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208 |
while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { |
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209 |
cm->follow_contents((objArrayOop)task.obj(), task.index()); |
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210 |
cm->follow_marking_stacks(); |
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|
211 |
} |
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212 |
while (ParCompactionManager::steal(which, &random_seed, obj)) { |
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213 |
cm->follow_contents(obj); |
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|
214 |
cm->follow_marking_stacks(); |
1 | 215 |
} |
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216 |
} while (!terminator()->offer_termination()); |
1 | 217 |
} |
218 |
||
219 |
// |
|
38250
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220 |
// CompactionWithStealingTask |
1 | 221 |
// |
222 |
||
38250
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|
223 |
CompactionWithStealingTask::CompactionWithStealingTask(ParallelTaskTerminator* t): |
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224 |
_terminator(t) {} |
1 | 225 |
|
38250
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226 |
void CompactionWithStealingTask::do_it(GCTaskManager* manager, uint which) { |
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227 |
assert(ParallelScavengeHeap::heap()->is_gc_active(), "called outside gc"); |
1 | 228 |
|
229 |
ParCompactionManager* cm = |
|
230 |
ParCompactionManager::gc_thread_compaction_manager(which); |
|
231 |
||
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232 |
// Drain the stacks that have been preloaded with regions |
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233 |
// that are ready to fill. |
1 | 234 |
|
1407
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|
235 |
cm->drain_region_stacks(); |
1 | 236 |
|
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237 |
guarantee(cm->region_stack()->is_empty(), "Not empty"); |
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|
238 |
|
1407
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|
239 |
size_t region_index = 0; |
1 | 240 |
int random_seed = 17; |
241 |
||
242 |
while(true) { |
|
1407
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|
243 |
if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
9006b01ba3fd
6725697: par compact - rename class ChunkData to RegionData
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diff
changeset
|
244 |
PSParallelCompact::fill_and_update_region(cm, region_index); |
9006b01ba3fd
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changeset
|
245 |
cm->drain_region_stacks(); |
1 | 246 |
} else { |
247 |
if (terminator()->offer_termination()) { |
|
248 |
break; |
|
249 |
} |
|
250 |
// Go around again. |
|
251 |
} |
|
252 |
} |
|
253 |
return; |
|
254 |
} |
|
255 |
||
256 |
UpdateDensePrefixTask::UpdateDensePrefixTask( |
|
257 |
PSParallelCompact::SpaceId space_id, |
|
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size_t region_index_start, |
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size_t region_index_end) : |
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_space_id(space_id), _region_index_start(region_index_start), |
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_region_index_end(region_index_end) {} |
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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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PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, |
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_space_id, |
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_region_index_start, |
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_region_index_end); |
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} |