Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp @ 4909:95f6641e38e0
7144296: PS: Optimize nmethods processing
Summary: Prunes scavenge roots in code list every young GC, promote objects directly pointed by the code immediately
Reviewed-by: johnc, jcoomes
author | iveresov |
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date | Fri, 10 Feb 2012 17:40:20 -0800 |
parents | bca17e38de00 |
children | da91efe96a93 |
rev | line source |
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0 | 1 /* |
4909 | 2 * Copyright (c) 2002, 2012, 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/cardTableExtension.hpp" | |
29 #include "gc_implementation/parallelScavenge/gcTaskManager.hpp" | |
30 #include "gc_implementation/parallelScavenge/psMarkSweep.hpp" | |
31 #include "gc_implementation/parallelScavenge/psPromotionManager.hpp" | |
32 #include "gc_implementation/parallelScavenge/psPromotionManager.inline.hpp" | |
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33 #include "gc_implementation/parallelScavenge/psScavenge.inline.hpp" |
1972 | 34 #include "gc_implementation/parallelScavenge/psTasks.hpp" |
35 #include "memory/iterator.hpp" | |
36 #include "memory/universe.hpp" | |
37 #include "oops/oop.inline.hpp" | |
38 #include "oops/oop.psgc.inline.hpp" | |
39 #include "runtime/fprofiler.hpp" | |
40 #include "runtime/thread.hpp" | |
41 #include "runtime/vmThread.hpp" | |
42 #include "services/management.hpp" | |
43 #include "utilities/taskqueue.hpp" | |
0 | 44 |
45 // | |
46 // ScavengeRootsTask | |
47 // | |
48 | |
49 void ScavengeRootsTask::do_it(GCTaskManager* manager, uint which) { | |
50 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
51 | |
52 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
53 PSScavengeRootsClosure roots_closure(pm); | |
4909 | 54 PSPromoteRootsClosure roots_to_old_closure(pm); |
0 | 55 |
56 switch (_root_type) { | |
57 case universe: | |
58 Universe::oops_do(&roots_closure); | |
59 break; | |
60 | |
61 case jni_handles: | |
62 JNIHandles::oops_do(&roots_closure); | |
63 break; | |
64 | |
65 case threads: | |
66 { | |
67 ResourceMark rm; | |
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68 Threads::oops_do(&roots_closure, NULL); |
0 | 69 } |
70 break; | |
71 | |
72 case object_synchronizer: | |
73 ObjectSynchronizer::oops_do(&roots_closure); | |
74 break; | |
75 | |
76 case flat_profiler: | |
77 FlatProfiler::oops_do(&roots_closure); | |
78 break; | |
79 | |
80 case system_dictionary: | |
81 SystemDictionary::oops_do(&roots_closure); | |
82 break; | |
83 | |
84 case management: | |
85 Management::oops_do(&roots_closure); | |
86 break; | |
87 | |
88 case jvmti: | |
89 JvmtiExport::oops_do(&roots_closure); | |
90 break; | |
91 | |
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92 |
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93 case code_cache: |
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94 { |
4909 | 95 CodeBlobToOopClosure each_scavengable_code_blob(&roots_to_old_closure, /*do_marking=*/ true); |
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96 CodeCache::scavenge_root_nmethods_do(&each_scavengable_code_blob); |
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97 } |
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98 break; |
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99 |
0 | 100 default: |
101 fatal("Unknown root type"); | |
102 } | |
103 | |
104 // Do the real work | |
105 pm->drain_stacks(false); | |
106 } | |
107 | |
108 // | |
109 // ThreadRootsTask | |
110 // | |
111 | |
112 void ThreadRootsTask::do_it(GCTaskManager* manager, uint which) { | |
113 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
114 | |
115 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
116 PSScavengeRootsClosure roots_closure(pm); | |
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117 CodeBlobToOopClosure roots_in_blobs(&roots_closure, /*do_marking=*/ true); |
0 | 118 |
119 if (_java_thread != NULL) | |
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120 _java_thread->oops_do(&roots_closure, &roots_in_blobs); |
0 | 121 |
122 if (_vm_thread != NULL) | |
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123 _vm_thread->oops_do(&roots_closure, &roots_in_blobs); |
0 | 124 |
125 // Do the real work | |
126 pm->drain_stacks(false); | |
127 } | |
128 | |
129 // | |
130 // StealTask | |
131 // | |
132 | |
133 StealTask::StealTask(ParallelTaskTerminator* t) : | |
134 _terminator(t) {} | |
135 | |
136 void StealTask::do_it(GCTaskManager* manager, uint which) { | |
137 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
138 | |
139 PSPromotionManager* pm = | |
140 PSPromotionManager::gc_thread_promotion_manager(which); | |
141 pm->drain_stacks(true); | |
142 guarantee(pm->stacks_empty(), | |
143 "stacks should be empty at this point"); | |
144 | |
145 int random_seed = 17; | |
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146 while(true) { |
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147 StarTask p; |
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148 if (PSPromotionManager::steal_depth(which, &random_seed, p)) { |
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149 TASKQUEUE_STATS_ONLY(pm->record_steal(p)); |
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150 pm->process_popped_location_depth(p); |
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151 pm->drain_stacks_depth(true); |
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152 } else { |
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153 if (terminator()->offer_termination()) { |
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154 break; |
0 | 155 } |
156 } | |
157 } | |
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158 guarantee(pm->stacks_empty(), "stacks should be empty at this point"); |
0 | 159 } |
160 | |
161 // | |
162 // SerialOldToYoungRootsTask | |
163 // | |
164 | |
165 void SerialOldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
166 assert(_gen != NULL, "Sanity"); | |
167 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
168 | |
169 { | |
170 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
171 | |
172 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
173 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
174 // FIX ME! Assert that card_table is the type we believe it to be. | |
175 | |
176 card_table->scavenge_contents(_gen->start_array(), | |
177 _gen->object_space(), | |
178 _gen_top, | |
179 pm); | |
180 | |
181 // Do the real work | |
182 pm->drain_stacks(false); | |
183 } | |
184 } | |
185 | |
186 // | |
187 // OldToYoungRootsTask | |
188 // | |
189 | |
190 void OldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
191 assert(_gen != NULL, "Sanity"); | |
192 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
193 assert(_stripe_number < ParallelGCThreads, "Sanity"); | |
194 | |
195 { | |
196 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
197 | |
198 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
199 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
200 // FIX ME! Assert that card_table is the type we believe it to be. | |
201 | |
202 card_table->scavenge_contents_parallel(_gen->start_array(), | |
203 _gen->object_space(), | |
204 _gen_top, | |
205 pm, | |
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206 _stripe_number, |
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207 _stripe_total); |
0 | 208 |
209 // Do the real work | |
210 pm->drain_stacks(false); | |
211 } | |
212 } |