Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp @ 1665:a93a9eda13f7
6962947: shared TaskQueue statistics
Reviewed-by: tonyp, ysr
author | jcoomes |
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date | Fri, 16 Jul 2010 21:33:21 -0700 |
parents | c18cbe5936b8 |
children | 9d7a8ab3736b |
rev | line source |
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0 | 1 /* |
1665 | 2 * Copyright (c) 2002, 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 | |
25 #include "incls/_precompiled.incl" | |
26 #include "incls/_psTasks.cpp.incl" | |
27 | |
28 // | |
29 // ScavengeRootsTask | |
30 // | |
31 | |
32 // Define before use | |
33 class PSScavengeRootsClosure: public OopClosure { | |
34 private: | |
35 PSPromotionManager* _promotion_manager; | |
36 | |
113
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37 protected: |
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38 template <class T> void do_oop_work(T *p) { |
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39 if (PSScavenge::should_scavenge(p)) { |
0 | 40 // We never card mark roots, maybe call a func without test? |
41 PSScavenge::copy_and_push_safe_barrier(_promotion_manager, p); | |
42 } | |
43 } | |
113
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44 public: |
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45 PSScavengeRootsClosure(PSPromotionManager* pm) : _promotion_manager(pm) { } |
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46 void do_oop(oop* p) { PSScavengeRootsClosure::do_oop_work(p); } |
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47 void do_oop(narrowOop* p) { PSScavengeRootsClosure::do_oop_work(p); } |
0 | 48 }; |
49 | |
50 void ScavengeRootsTask::do_it(GCTaskManager* manager, uint which) { | |
51 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
52 | |
53 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
54 PSScavengeRootsClosure roots_closure(pm); | |
55 | |
56 switch (_root_type) { | |
57 case universe: | |
58 Universe::oops_do(&roots_closure); | |
59 ReferenceProcessor::oops_do(&roots_closure); | |
60 break; | |
61 | |
62 case jni_handles: | |
63 JNIHandles::oops_do(&roots_closure); | |
64 break; | |
65 | |
66 case threads: | |
67 { | |
68 ResourceMark rm; | |
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69 Threads::oops_do(&roots_closure, NULL); |
0 | 70 } |
71 break; | |
72 | |
73 case object_synchronizer: | |
74 ObjectSynchronizer::oops_do(&roots_closure); | |
75 break; | |
76 | |
77 case flat_profiler: | |
78 FlatProfiler::oops_do(&roots_closure); | |
79 break; | |
80 | |
81 case system_dictionary: | |
82 SystemDictionary::oops_do(&roots_closure); | |
83 break; | |
84 | |
85 case management: | |
86 Management::oops_do(&roots_closure); | |
87 break; | |
88 | |
89 case jvmti: | |
90 JvmtiExport::oops_do(&roots_closure); | |
91 break; | |
92 | |
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93 |
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94 case code_cache: |
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95 { |
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96 CodeBlobToOopClosure each_scavengable_code_blob(&roots_closure, /*do_marking=*/ true); |
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97 CodeCache::scavenge_root_nmethods_do(&each_scavengable_code_blob); |
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98 } |
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99 break; |
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100 |
0 | 101 default: |
102 fatal("Unknown root type"); | |
103 } | |
104 | |
105 // Do the real work | |
106 pm->drain_stacks(false); | |
107 } | |
108 | |
109 // | |
110 // ThreadRootsTask | |
111 // | |
112 | |
113 void ThreadRootsTask::do_it(GCTaskManager* manager, uint which) { | |
114 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
115 | |
116 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
117 PSScavengeRootsClosure roots_closure(pm); | |
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118 CodeBlobToOopClosure roots_in_blobs(&roots_closure, /*do_marking=*/ true); |
0 | 119 |
120 if (_java_thread != NULL) | |
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121 _java_thread->oops_do(&roots_closure, &roots_in_blobs); |
0 | 122 |
123 if (_vm_thread != NULL) | |
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124 _vm_thread->oops_do(&roots_closure, &roots_in_blobs); |
0 | 125 |
126 // Do the real work | |
127 pm->drain_stacks(false); | |
128 } | |
129 | |
130 // | |
131 // StealTask | |
132 // | |
133 | |
134 StealTask::StealTask(ParallelTaskTerminator* t) : | |
135 _terminator(t) {} | |
136 | |
137 void StealTask::do_it(GCTaskManager* manager, uint which) { | |
138 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
139 | |
140 PSPromotionManager* pm = | |
141 PSPromotionManager::gc_thread_promotion_manager(which); | |
142 pm->drain_stacks(true); | |
143 guarantee(pm->stacks_empty(), | |
144 "stacks should be empty at this point"); | |
145 | |
146 int random_seed = 17; | |
147 if (pm->depth_first()) { | |
148 while(true) { | |
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149 StarTask p; |
0 | 150 if (PSPromotionManager::steal_depth(which, &random_seed, p)) { |
1665 | 151 TASKQUEUE_STATS_ONLY(pm->record_steal(p)); |
0 | 152 pm->process_popped_location_depth(p); |
153 pm->drain_stacks_depth(true); | |
154 } else { | |
155 if (terminator()->offer_termination()) { | |
156 break; | |
157 } | |
158 } | |
159 } | |
160 } else { | |
161 while(true) { | |
162 oop obj; | |
163 if (PSPromotionManager::steal_breadth(which, &random_seed, obj)) { | |
164 obj->copy_contents(pm); | |
165 pm->drain_stacks_breadth(true); | |
166 } else { | |
167 if (terminator()->offer_termination()) { | |
168 break; | |
169 } | |
170 } | |
171 } | |
172 } | |
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173 guarantee(pm->stacks_empty(), "stacks should be empty at this point"); |
0 | 174 } |
175 | |
176 // | |
177 // SerialOldToYoungRootsTask | |
178 // | |
179 | |
180 void SerialOldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
181 assert(_gen != NULL, "Sanity"); | |
182 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
183 | |
184 { | |
185 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
186 | |
187 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
188 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
189 // FIX ME! Assert that card_table is the type we believe it to be. | |
190 | |
191 card_table->scavenge_contents(_gen->start_array(), | |
192 _gen->object_space(), | |
193 _gen_top, | |
194 pm); | |
195 | |
196 // Do the real work | |
197 pm->drain_stacks(false); | |
198 } | |
199 } | |
200 | |
201 // | |
202 // OldToYoungRootsTask | |
203 // | |
204 | |
205 void OldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
206 assert(_gen != NULL, "Sanity"); | |
207 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
208 assert(_stripe_number < ParallelGCThreads, "Sanity"); | |
209 | |
210 { | |
211 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
212 | |
213 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
214 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
215 // FIX ME! Assert that card_table is the type we believe it to be. | |
216 | |
217 card_table->scavenge_contents_parallel(_gen->start_array(), | |
218 _gen->object_space(), | |
219 _gen_top, | |
220 pm, | |
221 _stripe_number); | |
222 | |
223 // Do the real work | |
224 pm->drain_stacks(false); | |
225 } | |
226 } |