Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 948:89e0543e1737
6884624: Update copyright year
Summary: Update copyright for files that have been modified in 2009 through Septermber
Reviewed-by: tbell, ohair
| author | xdono |
|---|---|
| date | Tue, 22 Sep 2009 14:06:10 -0700 |
| parents | 8b46c4d82093 |
| children | a1423fe86a18 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 948 | 2 * Copyright 2005-2009 Sun Microsystems, Inc. All Rights Reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 # include "incls/_precompiled.incl" | |
| 26 # include "incls/_pcTasks.cpp.incl" | |
| 27 | |
| 28 // | |
| 29 // ThreadRootsMarkingTask | |
| 30 // | |
| 31 | |
| 32 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) { | |
| 33 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 34 | |
| 35 ResourceMark rm; | |
| 36 | |
| 37 NOT_PRODUCT(TraceTime tm("ThreadRootsMarkingTask", | |
| 38 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 39 ParCompactionManager* cm = | |
| 40 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 41 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 42 | |
| 43 if (_java_thread != NULL) | |
| 44 _java_thread->oops_do(&mark_and_push_closure); | |
| 45 | |
| 46 if (_vm_thread != NULL) | |
| 47 _vm_thread->oops_do(&mark_and_push_closure); | |
| 48 | |
| 49 // Do the real work | |
| 50 cm->drain_marking_stacks(&mark_and_push_closure); | |
| 51 } | |
| 52 | |
| 53 | |
| 54 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 55 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 56 | |
| 57 NOT_PRODUCT(TraceTime tm("MarkFromRootsTask", | |
| 58 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 59 ParCompactionManager* cm = | |
| 60 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 61 assert(cm->stacks_have_been_allocated(), | |
| 941 | 62 "Stack space has not been allocated"); |
| 0 | 63 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); |
| 64 | |
| 65 switch (_root_type) { | |
| 66 case universe: | |
| 67 Universe::oops_do(&mark_and_push_closure); | |
| 68 break; | |
| 69 | |
| 70 case reference_processing: | |
| 71 ReferenceProcessor::oops_do(&mark_and_push_closure); | |
| 72 break; | |
| 73 | |
| 74 case jni_handles: | |
| 75 JNIHandles::oops_do(&mark_and_push_closure); | |
| 76 break; | |
| 77 | |
| 78 case threads: | |
| 79 { | |
| 80 ResourceMark rm; | |
| 81 Threads::oops_do(&mark_and_push_closure); | |
| 82 } | |
| 83 break; | |
| 84 | |
| 85 case object_synchronizer: | |
| 86 ObjectSynchronizer::oops_do(&mark_and_push_closure); | |
| 87 break; | |
| 88 | |
| 89 case flat_profiler: | |
| 90 FlatProfiler::oops_do(&mark_and_push_closure); | |
| 91 break; | |
| 92 | |
| 93 case management: | |
| 94 Management::oops_do(&mark_and_push_closure); | |
| 95 break; | |
| 96 | |
| 97 case jvmti: | |
| 98 JvmtiExport::oops_do(&mark_and_push_closure); | |
| 99 break; | |
| 100 | |
| 101 case system_dictionary: | |
| 102 SystemDictionary::always_strong_oops_do(&mark_and_push_closure); | |
| 103 break; | |
| 104 | |
| 105 case vm_symbols: | |
| 106 vmSymbols::oops_do(&mark_and_push_closure); | |
| 107 break; | |
| 108 | |
| 109 default: | |
| 110 fatal("Unknown root type"); | |
| 111 } | |
| 112 | |
| 113 // Do the real work | |
| 114 cm->drain_marking_stacks(&mark_and_push_closure); | |
| 115 // cm->deallocate_stacks(); | |
| 116 } | |
| 117 | |
| 118 | |
| 119 // | |
| 120 // RefProcTaskProxy | |
| 121 // | |
| 122 | |
| 123 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) | |
| 124 { | |
| 125 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 126 | |
| 127 NOT_PRODUCT(TraceTime tm("RefProcTask", | |
| 128 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 129 ParCompactionManager* cm = | |
| 130 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 131 assert(cm->stacks_have_been_allocated(), | |
| 941 | 132 "Stack space has not been allocated"); |
| 0 | 133 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); |
| 134 PSParallelCompact::FollowStackClosure follow_stack_closure(cm); | |
| 135 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), | |
| 136 mark_and_push_closure, follow_stack_closure); | |
| 137 } | |
| 138 | |
| 139 // | |
| 140 // RefProcTaskExecutor | |
| 141 // | |
| 142 | |
| 143 void RefProcTaskExecutor::execute(ProcessTask& task) | |
| 144 { | |
| 145 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
| 146 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
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147 RegionTaskQueueSet* qset = ParCompactionManager::region_array(); |
| 0 | 148 ParallelTaskTerminator terminator(parallel_gc_threads, qset); |
| 149 GCTaskQueue* q = GCTaskQueue::create(); | |
| 150 for(uint i=0; i<parallel_gc_threads; i++) { | |
| 151 q->enqueue(new RefProcTaskProxy(task, i)); | |
| 152 } | |
| 153 if (task.marks_oops_alive()) { | |
| 154 if (parallel_gc_threads>1) { | |
| 155 for (uint j=0; j<parallel_gc_threads; j++) { | |
| 156 q->enqueue(new StealMarkingTask(&terminator)); | |
| 157 } | |
| 158 } | |
| 159 } | |
| 160 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
| 161 } | |
| 162 | |
| 163 void RefProcTaskExecutor::execute(EnqueueTask& task) | |
| 164 { | |
| 165 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
| 166 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
| 167 GCTaskQueue* q = GCTaskQueue::create(); | |
| 168 for(uint i=0; i<parallel_gc_threads; i++) { | |
| 169 q->enqueue(new RefEnqueueTaskProxy(task, i)); | |
| 170 } | |
| 171 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
| 172 } | |
| 173 | |
| 174 // | |
| 175 // StealMarkingTask | |
| 176 // | |
| 177 | |
| 178 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : | |
| 179 _terminator(t) {} | |
| 180 | |
| 181 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { | |
| 182 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 183 | |
| 184 NOT_PRODUCT(TraceTime tm("StealMarkingTask", | |
| 185 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 186 | |
| 187 ParCompactionManager* cm = | |
| 188 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 189 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 190 | |
| 191 oop obj = NULL; | |
| 192 int random_seed = 17; | |
| 193 while(true) { | |
| 194 if (ParCompactionManager::steal(which, &random_seed, obj)) { | |
| 195 obj->follow_contents(cm); | |
| 196 cm->drain_marking_stacks(&mark_and_push_closure); | |
| 197 } else { | |
| 198 if (terminator()->offer_termination()) { | |
| 199 break; | |
| 200 } | |
| 201 } | |
| 202 } | |
| 203 } | |
| 204 | |
| 205 // | |
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206 // StealRegionCompactionTask |
| 0 | 207 // |
| 208 | |
| 209 | |
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210 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): |
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211 _terminator(t) {} |
| 0 | 212 |
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213 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { |
| 0 | 214 assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| 215 | |
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216 NOT_PRODUCT(TraceTime tm("StealRegionCompactionTask", |
| 0 | 217 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| 218 | |
| 219 ParCompactionManager* cm = | |
| 220 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 221 | |
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222 // Has to drain stacks first because there may be regions on |
| 0 | 223 // preloaded onto the stack and this thread may never have |
| 224 // done a draining task. Are the draining tasks needed? | |
| 225 | |
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226 cm->drain_region_stacks(); |
| 0 | 227 |
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228 size_t region_index = 0; |
| 0 | 229 int random_seed = 17; |
| 230 | |
| 231 // If we're the termination task, try 10 rounds of stealing before | |
| 232 // setting the termination flag | |
| 233 | |
| 234 while(true) { | |
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235 if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
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236 PSParallelCompact::fill_and_update_region(cm, region_index); |
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237 cm->drain_region_stacks(); |
| 0 | 238 } else { |
| 239 if (terminator()->offer_termination()) { | |
| 240 break; | |
| 241 } | |
| 242 // Go around again. | |
| 243 } | |
| 244 } | |
| 245 return; | |
| 246 } | |
| 247 | |
| 248 UpdateDensePrefixTask::UpdateDensePrefixTask( | |
| 249 PSParallelCompact::SpaceId space_id, | |
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250 size_t region_index_start, |
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251 size_t region_index_end) : |
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252 _space_id(space_id), _region_index_start(region_index_start), |
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253 _region_index_end(region_index_end) {} |
| 0 | 254 |
| 255 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { | |
| 256 | |
| 257 NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask", | |
| 258 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 259 | |
| 260 ParCompactionManager* cm = | |
| 261 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 262 | |
| 263 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, | |
| 264 _space_id, | |
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265 _region_index_start, |
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266 _region_index_end); |
| 0 | 267 } |
| 268 | |
| 269 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { | |
| 270 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 271 | |
| 272 NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask", | |
| 273 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 274 | |
| 275 ParCompactionManager* cm = | |
| 276 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 277 | |
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278 // Process any regions already in the compaction managers stacks. |
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279 cm->drain_region_stacks(); |
| 0 | 280 } |