Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 2015:79d8657be916
6993125: runThese crashes with assert(Thread::current()->on_local_stack((address)this))
Summary: add another ResourceObj debug field to distinguish garbage
Reviewed-by: dholmes, coleenp
author | kvn |
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date | Fri, 10 Dec 2010 14:14:02 -0800 |
parents | f95d63e2154a |
children | 3582bf76420e |
rev | line source |
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0 | 1 /* |
1972 | 2 * Copyright (c) 2005, 2010, 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 * | |
1552
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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) | |
989
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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 reference_processing: | |
84 ReferenceProcessor::oops_do(&mark_and_push_closure); | |
85 break; | |
86 | |
87 case jni_handles: | |
88 JNIHandles::oops_do(&mark_and_push_closure); | |
89 break; | |
90 | |
91 case threads: | |
92 { | |
93 ResourceMark rm; | |
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94 CodeBlobToOopClosure each_active_code_blob(&mark_and_push_closure, /*do_marking=*/ true); |
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95 Threads::oops_do(&mark_and_push_closure, &each_active_code_blob); |
0 | 96 } |
97 break; | |
98 | |
99 case object_synchronizer: | |
100 ObjectSynchronizer::oops_do(&mark_and_push_closure); | |
101 break; | |
102 | |
103 case flat_profiler: | |
104 FlatProfiler::oops_do(&mark_and_push_closure); | |
105 break; | |
106 | |
107 case management: | |
108 Management::oops_do(&mark_and_push_closure); | |
109 break; | |
110 | |
111 case jvmti: | |
112 JvmtiExport::oops_do(&mark_and_push_closure); | |
113 break; | |
114 | |
115 case system_dictionary: | |
116 SystemDictionary::always_strong_oops_do(&mark_and_push_closure); | |
117 break; | |
118 | |
119 case vm_symbols: | |
120 vmSymbols::oops_do(&mark_and_push_closure); | |
121 break; | |
122 | |
989
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123 case code_cache: |
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124 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them. |
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125 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); |
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126 break; |
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127 |
0 | 128 default: |
129 fatal("Unknown root type"); | |
130 } | |
131 | |
132 // Do the real work | |
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133 cm->follow_marking_stacks(); |
0 | 134 } |
135 | |
136 | |
137 // | |
138 // RefProcTaskProxy | |
139 // | |
140 | |
141 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) | |
142 { | |
143 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
144 | |
145 NOT_PRODUCT(TraceTime tm("RefProcTask", | |
146 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
147 ParCompactionManager* cm = | |
148 ParCompactionManager::gc_thread_compaction_manager(which); | |
149 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
150 PSParallelCompact::FollowStackClosure follow_stack_closure(cm); | |
151 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), | |
152 mark_and_push_closure, follow_stack_closure); | |
153 } | |
154 | |
155 // | |
156 // RefProcTaskExecutor | |
157 // | |
158 | |
159 void RefProcTaskExecutor::execute(ProcessTask& task) | |
160 { | |
161 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
162 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
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163 RegionTaskQueueSet* qset = ParCompactionManager::region_array(); |
0 | 164 ParallelTaskTerminator terminator(parallel_gc_threads, qset); |
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) { | |
171 for (uint j=0; j<parallel_gc_threads; j++) { | |
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 { | |
181 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
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) { | |
198 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
199 | |
200 NOT_PRODUCT(TraceTime tm("StealMarkingTask", | |
201 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
202 | |
203 ParCompactionManager* cm = | |
204 ParCompactionManager::gc_thread_compaction_manager(which); | |
205 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
206 | |
207 oop obj = NULL; | |
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208 ObjArrayTask task; |
0 | 209 int random_seed = 17; |
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210 do { |
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211 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { |
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212 objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); |
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213 k->oop_follow_contents(cm, task.obj(), task.index()); |
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214 cm->follow_marking_stacks(); |
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215 } |
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216 while (ParCompactionManager::steal(which, &random_seed, obj)) { |
0 | 217 obj->follow_contents(cm); |
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218 cm->follow_marking_stacks(); |
0 | 219 } |
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220 } while (!terminator()->offer_termination()); |
0 | 221 } |
222 | |
223 // | |
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224 // StealRegionCompactionTask |
0 | 225 // |
226 | |
227 | |
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228 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): |
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229 _terminator(t) {} |
0 | 230 |
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231 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { |
0 | 232 assert(Universe::heap()->is_gc_active(), "called outside gc"); |
233 | |
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234 NOT_PRODUCT(TraceTime tm("StealRegionCompactionTask", |
0 | 235 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
236 | |
237 ParCompactionManager* cm = | |
238 ParCompactionManager::gc_thread_compaction_manager(which); | |
239 | |
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240 // Has to drain stacks first because there may be regions on |
0 | 241 // preloaded onto the stack and this thread may never have |
242 // done a draining task. Are the draining tasks needed? | |
243 | |
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244 cm->drain_region_stacks(); |
0 | 245 |
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246 size_t region_index = 0; |
0 | 247 int random_seed = 17; |
248 | |
249 // If we're the termination task, try 10 rounds of stealing before | |
250 // setting the termination flag | |
251 | |
252 while(true) { | |
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253 if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
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254 PSParallelCompact::fill_and_update_region(cm, region_index); |
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255 cm->drain_region_stacks(); |
0 | 256 } else { |
257 if (terminator()->offer_termination()) { | |
258 break; | |
259 } | |
260 // Go around again. | |
261 } | |
262 } | |
263 return; | |
264 } | |
265 | |
266 UpdateDensePrefixTask::UpdateDensePrefixTask( | |
267 PSParallelCompact::SpaceId space_id, | |
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268 size_t region_index_start, |
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269 size_t region_index_end) : |
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270 _space_id(space_id), _region_index_start(region_index_start), |
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271 _region_index_end(region_index_end) {} |
0 | 272 |
273 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { | |
274 | |
275 NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask", | |
276 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
277 | |
278 ParCompactionManager* cm = | |
279 ParCompactionManager::gc_thread_compaction_manager(which); | |
280 | |
281 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, | |
282 _space_id, | |
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283 _region_index_start, |
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284 _region_index_end); |
0 | 285 } |
286 | |
287 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { | |
288 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
289 | |
290 NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask", | |
291 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
292 | |
293 ParCompactionManager* cm = | |
294 ParCompactionManager::gc_thread_compaction_manager(which); | |
295 | |
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296 // Process any regions already in the compaction managers stacks. |
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297 cm->drain_region_stacks(); |
0 | 298 } |