Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 3938:e6b1331a51d2
7086585: make Java field injection more flexible
Reviewed-by: jrose, twisti, kvn, coleenp
| author | never |
|---|---|
| date | Sat, 10 Sep 2011 17:29:02 -0700 |
| parents | c2bf0120ee5d |
| children | bca17e38de00 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "classfile/systemDictionary.hpp" | |
| 27 #include "code/codeCache.hpp" | |
| 28 #include "gc_implementation/parallelScavenge/pcTasks.hpp" | |
| 29 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp" | |
| 30 #include "gc_interface/collectedHeap.hpp" | |
| 31 #include "memory/universe.hpp" | |
| 32 #include "oops/objArrayKlass.inline.hpp" | |
| 33 #include "oops/oop.inline.hpp" | |
| 34 #include "oops/oop.pcgc.inline.hpp" | |
| 35 #include "prims/jvmtiExport.hpp" | |
| 36 #include "runtime/fprofiler.hpp" | |
| 37 #include "runtime/jniHandles.hpp" | |
| 38 #include "runtime/thread.hpp" | |
| 39 #include "runtime/vmThread.hpp" | |
| 40 #include "services/management.hpp" | |
| 0 | 41 |
| 42 // | |
| 43 // ThreadRootsMarkingTask | |
| 44 // | |
| 45 | |
| 46 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) { | |
| 47 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 48 | |
| 49 ResourceMark rm; | |
| 50 | |
| 51 NOT_PRODUCT(TraceTime tm("ThreadRootsMarkingTask", | |
| 52 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 53 ParCompactionManager* cm = | |
| 54 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 55 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
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56 CodeBlobToOopClosure mark_and_push_in_blobs(&mark_and_push_closure, /*do_marking=*/ true); |
| 0 | 57 |
| 58 if (_java_thread != NULL) | |
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59 _java_thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs); |
| 0 | 60 |
| 61 if (_vm_thread != NULL) | |
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62 _vm_thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs); |
| 0 | 63 |
| 64 // Do the real work | |
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65 cm->follow_marking_stacks(); |
| 0 | 66 } |
| 67 | |
| 68 | |
| 69 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 70 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 71 | |
| 72 NOT_PRODUCT(TraceTime tm("MarkFromRootsTask", | |
| 73 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 74 ParCompactionManager* cm = | |
| 75 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 76 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 77 | |
| 78 switch (_root_type) { | |
| 79 case universe: | |
| 80 Universe::oops_do(&mark_and_push_closure); | |
| 81 break; | |
| 82 | |
| 83 case jni_handles: | |
| 84 JNIHandles::oops_do(&mark_and_push_closure); | |
| 85 break; | |
| 86 | |
| 87 case threads: | |
| 88 { | |
| 89 ResourceMark rm; | |
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90 CodeBlobToOopClosure each_active_code_blob(&mark_and_push_closure, /*do_marking=*/ true); |
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91 Threads::oops_do(&mark_and_push_closure, &each_active_code_blob); |
| 0 | 92 } |
| 93 break; | |
| 94 | |
| 95 case object_synchronizer: | |
| 96 ObjectSynchronizer::oops_do(&mark_and_push_closure); | |
| 97 break; | |
| 98 | |
| 99 case flat_profiler: | |
| 100 FlatProfiler::oops_do(&mark_and_push_closure); | |
| 101 break; | |
| 102 | |
| 103 case management: | |
| 104 Management::oops_do(&mark_and_push_closure); | |
| 105 break; | |
| 106 | |
| 107 case jvmti: | |
| 108 JvmtiExport::oops_do(&mark_and_push_closure); | |
| 109 break; | |
| 110 | |
| 111 case system_dictionary: | |
| 112 SystemDictionary::always_strong_oops_do(&mark_and_push_closure); | |
| 113 break; | |
| 114 | |
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115 case code_cache: |
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116 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them. |
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117 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); |
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118 break; |
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119 |
| 0 | 120 default: |
| 121 fatal("Unknown root type"); | |
| 122 } | |
| 123 | |
| 124 // Do the real work | |
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125 cm->follow_marking_stacks(); |
| 0 | 126 } |
| 127 | |
| 128 | |
| 129 // | |
| 130 // RefProcTaskProxy | |
| 131 // | |
| 132 | |
| 133 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) | |
| 134 { | |
| 135 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 136 | |
| 137 NOT_PRODUCT(TraceTime tm("RefProcTask", | |
| 138 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 139 ParCompactionManager* cm = | |
| 140 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 141 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 142 PSParallelCompact::FollowStackClosure follow_stack_closure(cm); | |
| 143 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), | |
| 144 mark_and_push_closure, follow_stack_closure); | |
| 145 } | |
| 146 | |
| 147 // | |
| 148 // RefProcTaskExecutor | |
| 149 // | |
| 150 | |
| 151 void RefProcTaskExecutor::execute(ProcessTask& task) | |
| 152 { | |
| 153 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
| 154 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
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155 RegionTaskQueueSet* qset = ParCompactionManager::region_array(); |
| 0 | 156 ParallelTaskTerminator terminator(parallel_gc_threads, qset); |
| 157 GCTaskQueue* q = GCTaskQueue::create(); | |
| 158 for(uint i=0; i<parallel_gc_threads; i++) { | |
| 159 q->enqueue(new RefProcTaskProxy(task, i)); | |
| 160 } | |
| 161 if (task.marks_oops_alive()) { | |
| 162 if (parallel_gc_threads>1) { | |
| 163 for (uint j=0; j<parallel_gc_threads; j++) { | |
| 164 q->enqueue(new StealMarkingTask(&terminator)); | |
| 165 } | |
| 166 } | |
| 167 } | |
| 168 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
| 169 } | |
| 170 | |
| 171 void RefProcTaskExecutor::execute(EnqueueTask& task) | |
| 172 { | |
| 173 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
| 174 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
| 175 GCTaskQueue* q = GCTaskQueue::create(); | |
| 176 for(uint i=0; i<parallel_gc_threads; i++) { | |
| 177 q->enqueue(new RefEnqueueTaskProxy(task, i)); | |
| 178 } | |
| 179 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
| 180 } | |
| 181 | |
| 182 // | |
| 183 // StealMarkingTask | |
| 184 // | |
| 185 | |
| 186 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : | |
| 187 _terminator(t) {} | |
| 188 | |
| 189 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { | |
| 190 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 191 | |
| 192 NOT_PRODUCT(TraceTime tm("StealMarkingTask", | |
| 193 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 194 | |
| 195 ParCompactionManager* cm = | |
| 196 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 197 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 198 | |
| 199 oop obj = NULL; | |
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200 ObjArrayTask task; |
| 0 | 201 int random_seed = 17; |
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202 do { |
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203 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { |
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204 objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); |
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205 k->oop_follow_contents(cm, task.obj(), task.index()); |
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206 cm->follow_marking_stacks(); |
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207 } |
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208 while (ParCompactionManager::steal(which, &random_seed, obj)) { |
| 0 | 209 obj->follow_contents(cm); |
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210 cm->follow_marking_stacks(); |
| 0 | 211 } |
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212 } while (!terminator()->offer_termination()); |
| 0 | 213 } |
| 214 | |
| 215 // | |
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216 // StealRegionCompactionTask |
| 0 | 217 // |
| 218 | |
| 219 | |
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220 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): |
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221 _terminator(t) {} |
| 0 | 222 |
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223 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { |
| 0 | 224 assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| 225 | |
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226 NOT_PRODUCT(TraceTime tm("StealRegionCompactionTask", |
| 0 | 227 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| 228 | |
| 229 ParCompactionManager* cm = | |
| 230 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 231 | |
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232 // Has to drain stacks first because there may be regions on |
| 0 | 233 // preloaded onto the stack and this thread may never have |
| 234 // done a draining task. Are the draining tasks needed? | |
| 235 | |
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236 cm->drain_region_stacks(); |
| 0 | 237 |
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238 size_t region_index = 0; |
| 0 | 239 int random_seed = 17; |
| 240 | |
| 241 // If we're the termination task, try 10 rounds of stealing before | |
| 242 // setting the termination flag | |
| 243 | |
| 244 while(true) { | |
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245 if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
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246 PSParallelCompact::fill_and_update_region(cm, region_index); |
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247 cm->drain_region_stacks(); |
| 0 | 248 } else { |
| 249 if (terminator()->offer_termination()) { | |
| 250 break; | |
| 251 } | |
| 252 // Go around again. | |
| 253 } | |
| 254 } | |
| 255 return; | |
| 256 } | |
| 257 | |
| 258 UpdateDensePrefixTask::UpdateDensePrefixTask( | |
| 259 PSParallelCompact::SpaceId space_id, | |
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260 size_t region_index_start, |
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261 size_t region_index_end) : |
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262 _space_id(space_id), _region_index_start(region_index_start), |
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263 _region_index_end(region_index_end) {} |
| 0 | 264 |
| 265 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { | |
| 266 | |
| 267 NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask", | |
| 268 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 269 | |
| 270 ParCompactionManager* cm = | |
| 271 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 272 | |
| 273 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, | |
| 274 _space_id, | |
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275 _region_index_start, |
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276 _region_index_end); |
| 0 | 277 } |
| 278 | |
| 279 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { | |
| 280 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 281 | |
| 282 NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask", | |
| 283 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 284 | |
| 285 ParCompactionManager* cm = | |
| 286 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 287 | |
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288 // Process any regions already in the compaction managers stacks. |
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289 cm->drain_region_stacks(); |
| 0 | 290 } |