Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 989:148e5441d916
6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
| author | jrose |
|---|---|
| date | Tue, 15 Sep 2009 21:53:47 -0700 |
| parents | 81cd571500b0 |
| children | 54b3b351d6f9 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 196 | 2 * Copyright 2005-2008 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); | |
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42 CodeBlobToOopClosure mark_and_push_in_blobs(&mark_and_push_closure, /*do_marking=*/ true); |
| 0 | 43 |
| 44 if (_java_thread != NULL) | |
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45 _java_thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs); |
| 0 | 46 |
| 47 if (_vm_thread != NULL) | |
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48 _vm_thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs); |
| 0 | 49 |
| 50 // Do the real work | |
| 51 cm->drain_marking_stacks(&mark_and_push_closure); | |
| 52 } | |
| 53 | |
| 54 | |
| 55 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 56 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 57 | |
| 58 NOT_PRODUCT(TraceTime tm("MarkFromRootsTask", | |
| 59 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 60 ParCompactionManager* cm = | |
| 61 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 62 // cm->allocate_stacks(); | |
| 63 assert(cm->stacks_have_been_allocated(), | |
| 64 "Stack space has not been allocated"); | |
| 65 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 66 | |
| 67 switch (_root_type) { | |
| 68 case universe: | |
| 69 Universe::oops_do(&mark_and_push_closure); | |
| 70 break; | |
| 71 | |
| 72 case reference_processing: | |
| 73 ReferenceProcessor::oops_do(&mark_and_push_closure); | |
| 74 break; | |
| 75 | |
| 76 case jni_handles: | |
| 77 JNIHandles::oops_do(&mark_and_push_closure); | |
| 78 break; | |
| 79 | |
| 80 case threads: | |
| 81 { | |
| 82 ResourceMark rm; | |
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83 CodeBlobToOopClosure each_active_code_blob(&mark_and_push_closure, /*do_marking=*/ true); |
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84 Threads::oops_do(&mark_and_push_closure, &each_active_code_blob); |
| 0 | 85 } |
| 86 break; | |
| 87 | |
| 88 case object_synchronizer: | |
| 89 ObjectSynchronizer::oops_do(&mark_and_push_closure); | |
| 90 break; | |
| 91 | |
| 92 case flat_profiler: | |
| 93 FlatProfiler::oops_do(&mark_and_push_closure); | |
| 94 break; | |
| 95 | |
| 96 case management: | |
| 97 Management::oops_do(&mark_and_push_closure); | |
| 98 break; | |
| 99 | |
| 100 case jvmti: | |
| 101 JvmtiExport::oops_do(&mark_and_push_closure); | |
| 102 break; | |
| 103 | |
| 104 case system_dictionary: | |
| 105 SystemDictionary::always_strong_oops_do(&mark_and_push_closure); | |
| 106 break; | |
| 107 | |
| 108 case vm_symbols: | |
| 109 vmSymbols::oops_do(&mark_and_push_closure); | |
| 110 break; | |
| 111 | |
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112 case code_cache: |
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113 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them. |
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114 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); |
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115 break; |
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116 |
| 0 | 117 default: |
| 118 fatal("Unknown root type"); | |
| 119 } | |
| 120 | |
| 121 // Do the real work | |
| 122 cm->drain_marking_stacks(&mark_and_push_closure); | |
| 123 // cm->deallocate_stacks(); | |
| 124 } | |
| 125 | |
| 126 | |
| 127 // | |
| 128 // RefProcTaskProxy | |
| 129 // | |
| 130 | |
| 131 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) | |
| 132 { | |
| 133 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 134 | |
| 135 NOT_PRODUCT(TraceTime tm("RefProcTask", | |
| 136 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 137 ParCompactionManager* cm = | |
| 138 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 139 // cm->allocate_stacks(); | |
| 140 assert(cm->stacks_have_been_allocated(), | |
| 141 "Stack space has not been allocated"); | |
| 142 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 143 PSParallelCompact::FollowStackClosure follow_stack_closure(cm); | |
| 144 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), | |
| 145 mark_and_push_closure, follow_stack_closure); | |
| 146 } | |
| 147 | |
| 148 // | |
| 149 // RefProcTaskExecutor | |
| 150 // | |
| 151 | |
| 152 void RefProcTaskExecutor::execute(ProcessTask& task) | |
| 153 { | |
| 154 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
| 155 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
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156 RegionTaskQueueSet* qset = ParCompactionManager::region_array(); |
| 0 | 157 ParallelTaskTerminator terminator(parallel_gc_threads, qset); |
| 158 GCTaskQueue* q = GCTaskQueue::create(); | |
| 159 for(uint i=0; i<parallel_gc_threads; i++) { | |
| 160 q->enqueue(new RefProcTaskProxy(task, i)); | |
| 161 } | |
| 162 if (task.marks_oops_alive()) { | |
| 163 if (parallel_gc_threads>1) { | |
| 164 for (uint j=0; j<parallel_gc_threads; j++) { | |
| 165 q->enqueue(new StealMarkingTask(&terminator)); | |
| 166 } | |
| 167 } | |
| 168 } | |
| 169 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
| 170 } | |
| 171 | |
| 172 void RefProcTaskExecutor::execute(EnqueueTask& task) | |
| 173 { | |
| 174 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
| 175 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
| 176 GCTaskQueue* q = GCTaskQueue::create(); | |
| 177 for(uint i=0; i<parallel_gc_threads; i++) { | |
| 178 q->enqueue(new RefEnqueueTaskProxy(task, i)); | |
| 179 } | |
| 180 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
| 181 } | |
| 182 | |
| 183 // | |
| 184 // StealMarkingTask | |
| 185 // | |
| 186 | |
| 187 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : | |
| 188 _terminator(t) {} | |
| 189 | |
| 190 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { | |
| 191 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 192 | |
| 193 NOT_PRODUCT(TraceTime tm("StealMarkingTask", | |
| 194 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 195 | |
| 196 ParCompactionManager* cm = | |
| 197 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 198 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
| 199 | |
| 200 oop obj = NULL; | |
| 201 int random_seed = 17; | |
| 202 while(true) { | |
| 203 if (ParCompactionManager::steal(which, &random_seed, obj)) { | |
| 204 obj->follow_contents(cm); | |
| 205 cm->drain_marking_stacks(&mark_and_push_closure); | |
| 206 } else { | |
| 207 if (terminator()->offer_termination()) { | |
| 208 break; | |
| 209 } | |
| 210 } | |
| 211 } | |
| 212 } | |
| 213 | |
| 214 // | |
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215 // StealRegionCompactionTask |
| 0 | 216 // |
| 217 | |
| 218 | |
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219 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): |
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220 _terminator(t) {} |
| 0 | 221 |
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222 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { |
| 0 | 223 assert(Universe::heap()->is_gc_active(), "called outside gc"); |
| 224 | |
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225 NOT_PRODUCT(TraceTime tm("StealRegionCompactionTask", |
| 0 | 226 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
| 227 | |
| 228 ParCompactionManager* cm = | |
| 229 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 230 | |
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231 // Has to drain stacks first because there may be regions on |
| 0 | 232 // preloaded onto the stack and this thread may never have |
| 233 // done a draining task. Are the draining tasks needed? | |
| 234 | |
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235 cm->drain_region_stacks(); |
| 0 | 236 |
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237 size_t region_index = 0; |
| 0 | 238 int random_seed = 17; |
| 239 | |
| 240 // If we're the termination task, try 10 rounds of stealing before | |
| 241 // setting the termination flag | |
| 242 | |
| 243 while(true) { | |
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244 if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
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245 PSParallelCompact::fill_and_update_region(cm, region_index); |
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246 cm->drain_region_stacks(); |
| 0 | 247 } else { |
| 248 if (terminator()->offer_termination()) { | |
| 249 break; | |
| 250 } | |
| 251 // Go around again. | |
| 252 } | |
| 253 } | |
| 254 return; | |
| 255 } | |
| 256 | |
| 257 UpdateDensePrefixTask::UpdateDensePrefixTask( | |
| 258 PSParallelCompact::SpaceId space_id, | |
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259 size_t region_index_start, |
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260 size_t region_index_end) : |
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261 _space_id(space_id), _region_index_start(region_index_start), |
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262 _region_index_end(region_index_end) {} |
| 0 | 263 |
| 264 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { | |
| 265 | |
| 266 NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask", | |
| 267 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 268 | |
| 269 ParCompactionManager* cm = | |
| 270 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 271 | |
| 272 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, | |
| 273 _space_id, | |
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274 _region_index_start, |
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275 _region_index_end); |
| 0 | 276 } |
| 277 | |
| 278 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { | |
| 279 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 280 | |
| 281 NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask", | |
| 282 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
| 283 | |
| 284 ParCompactionManager* cm = | |
| 285 ParCompactionManager::gc_thread_compaction_manager(which); | |
| 286 | |
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287 // Process any regions already in the compaction managers stacks. |
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288 cm->drain_region_stacks(); |
| 0 | 289 } |