Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 2212:d9e4d0aefc90
Small clean up to reduce delta to OpenJDK.
author | Thomas Wuerthinger <thomas.wuerthinger@gmail.com> |
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date | Mon, 21 Feb 2011 19:28:35 +0100 |
parents | 3582bf76420e |
children | 1d1603768966 |
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) | |
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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 | |
989
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119 case code_cache: |
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120 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them. |
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121 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure)); |
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122 break; |
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123 |
0 | 124 default: |
125 fatal("Unknown root type"); | |
126 } | |
127 | |
128 // Do the real work | |
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129 cm->follow_marking_stacks(); |
0 | 130 } |
131 | |
132 | |
133 // | |
134 // RefProcTaskProxy | |
135 // | |
136 | |
137 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which) | |
138 { | |
139 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
140 | |
141 NOT_PRODUCT(TraceTime tm("RefProcTask", | |
142 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
143 ParCompactionManager* cm = | |
144 ParCompactionManager::gc_thread_compaction_manager(which); | |
145 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
146 PSParallelCompact::FollowStackClosure follow_stack_closure(cm); | |
147 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(), | |
148 mark_and_push_closure, follow_stack_closure); | |
149 } | |
150 | |
151 // | |
152 // RefProcTaskExecutor | |
153 // | |
154 | |
155 void RefProcTaskExecutor::execute(ProcessTask& task) | |
156 { | |
157 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
158 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
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159 RegionTaskQueueSet* qset = ParCompactionManager::region_array(); |
0 | 160 ParallelTaskTerminator terminator(parallel_gc_threads, qset); |
161 GCTaskQueue* q = GCTaskQueue::create(); | |
162 for(uint i=0; i<parallel_gc_threads; i++) { | |
163 q->enqueue(new RefProcTaskProxy(task, i)); | |
164 } | |
165 if (task.marks_oops_alive()) { | |
166 if (parallel_gc_threads>1) { | |
167 for (uint j=0; j<parallel_gc_threads; j++) { | |
168 q->enqueue(new StealMarkingTask(&terminator)); | |
169 } | |
170 } | |
171 } | |
172 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
173 } | |
174 | |
175 void RefProcTaskExecutor::execute(EnqueueTask& task) | |
176 { | |
177 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap(); | |
178 uint parallel_gc_threads = heap->gc_task_manager()->workers(); | |
179 GCTaskQueue* q = GCTaskQueue::create(); | |
180 for(uint i=0; i<parallel_gc_threads; i++) { | |
181 q->enqueue(new RefEnqueueTaskProxy(task, i)); | |
182 } | |
183 PSParallelCompact::gc_task_manager()->execute_and_wait(q); | |
184 } | |
185 | |
186 // | |
187 // StealMarkingTask | |
188 // | |
189 | |
190 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) : | |
191 _terminator(t) {} | |
192 | |
193 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) { | |
194 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
195 | |
196 NOT_PRODUCT(TraceTime tm("StealMarkingTask", | |
197 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
198 | |
199 ParCompactionManager* cm = | |
200 ParCompactionManager::gc_thread_compaction_manager(which); | |
201 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm); | |
202 | |
203 oop obj = NULL; | |
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204 ObjArrayTask task; |
0 | 205 int random_seed = 17; |
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206 do { |
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207 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) { |
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208 objArrayKlass* const k = (objArrayKlass*)task.obj()->blueprint(); |
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209 k->oop_follow_contents(cm, 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)) { |
0 | 213 obj->follow_contents(cm); |
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214 cm->follow_marking_stacks(); |
0 | 215 } |
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216 } while (!terminator()->offer_termination()); |
0 | 217 } |
218 | |
219 // | |
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220 // StealRegionCompactionTask |
0 | 221 // |
222 | |
223 | |
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224 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t): |
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225 _terminator(t) {} |
0 | 226 |
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227 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) { |
0 | 228 assert(Universe::heap()->is_gc_active(), "called outside gc"); |
229 | |
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230 NOT_PRODUCT(TraceTime tm("StealRegionCompactionTask", |
0 | 231 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); |
232 | |
233 ParCompactionManager* cm = | |
234 ParCompactionManager::gc_thread_compaction_manager(which); | |
235 | |
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236 // Has to drain stacks first because there may be regions on |
0 | 237 // preloaded onto the stack and this thread may never have |
238 // done a draining task. Are the draining tasks needed? | |
239 | |
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240 cm->drain_region_stacks(); |
0 | 241 |
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242 size_t region_index = 0; |
0 | 243 int random_seed = 17; |
244 | |
245 // If we're the termination task, try 10 rounds of stealing before | |
246 // setting the termination flag | |
247 | |
248 while(true) { | |
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249 if (ParCompactionManager::steal(which, &random_seed, region_index)) { |
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250 PSParallelCompact::fill_and_update_region(cm, region_index); |
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251 cm->drain_region_stacks(); |
0 | 252 } else { |
253 if (terminator()->offer_termination()) { | |
254 break; | |
255 } | |
256 // Go around again. | |
257 } | |
258 } | |
259 return; | |
260 } | |
261 | |
262 UpdateDensePrefixTask::UpdateDensePrefixTask( | |
263 PSParallelCompact::SpaceId space_id, | |
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264 size_t region_index_start, |
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265 size_t region_index_end) : |
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266 _space_id(space_id), _region_index_start(region_index_start), |
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267 _region_index_end(region_index_end) {} |
0 | 268 |
269 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) { | |
270 | |
271 NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask", | |
272 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
273 | |
274 ParCompactionManager* cm = | |
275 ParCompactionManager::gc_thread_compaction_manager(which); | |
276 | |
277 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm, | |
278 _space_id, | |
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279 _region_index_start, |
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280 _region_index_end); |
0 | 281 } |
282 | |
283 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) { | |
284 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
285 | |
286 NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask", | |
287 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty)); | |
288 | |
289 ParCompactionManager* cm = | |
290 ParCompactionManager::gc_thread_compaction_manager(which); | |
291 | |
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292 // Process any regions already in the compaction managers stacks. |
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293 cm->drain_region_stacks(); |
0 | 294 } |