Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | 4ca6dc0799b6 |
| children | 7848fc12602b |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 17524 | 2 * Copyright (c) 2002, 2013, 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; | |
| 14909 | 68 CLDToOopClosure* cld_closure = NULL; // Not needed. All CLDs are already visited. |
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69 Threads::oops_do(&roots_closure, cld_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); | |
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83 break; |
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84 |
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85 case class_loader_data: |
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86 { |
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87 PSScavengeKlassClosure klass_closure(pm); |
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88 ClassLoaderDataGraph::oops_do(&roots_closure, &klass_closure, false); |
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89 } |
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90 break; |
| 0 | 91 |
| 92 case management: | |
| 93 Management::oops_do(&roots_closure); | |
| 94 break; | |
| 95 | |
| 96 case jvmti: | |
| 97 JvmtiExport::oops_do(&roots_closure); | |
| 98 break; | |
| 99 | |
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100 |
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101 case code_cache: |
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102 { |
| 4909 | 103 CodeBlobToOopClosure each_scavengable_code_blob(&roots_to_old_closure, /*do_marking=*/ true); |
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104 CodeCache::scavenge_root_nmethods_do(&each_scavengable_code_blob); |
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105 } |
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106 break; |
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107 |
| 0 | 108 default: |
| 109 fatal("Unknown root type"); | |
| 110 } | |
| 111 | |
| 112 // Do the real work | |
| 113 pm->drain_stacks(false); | |
| 114 } | |
| 115 | |
| 116 // | |
| 117 // ThreadRootsTask | |
| 118 // | |
| 119 | |
| 120 void ThreadRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 121 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 122 | |
| 123 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
| 124 PSScavengeRootsClosure roots_closure(pm); | |
| 14909 | 125 CLDToOopClosure* roots_from_clds = NULL; // Not needed. All CLDs are already visited. |
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126 CodeBlobToOopClosure roots_in_blobs(&roots_closure, /*do_marking=*/ true); |
| 0 | 127 |
| 128 if (_java_thread != NULL) | |
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129 _java_thread->oops_do(&roots_closure, roots_from_clds, &roots_in_blobs); |
| 0 | 130 |
| 131 if (_vm_thread != NULL) | |
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132 _vm_thread->oops_do(&roots_closure, roots_from_clds, &roots_in_blobs); |
| 0 | 133 |
| 134 // Do the real work | |
| 135 pm->drain_stacks(false); | |
| 136 } | |
| 137 | |
| 138 // | |
| 139 // StealTask | |
| 140 // | |
| 141 | |
| 142 StealTask::StealTask(ParallelTaskTerminator* t) : | |
| 143 _terminator(t) {} | |
| 144 | |
| 145 void StealTask::do_it(GCTaskManager* manager, uint which) { | |
| 146 assert(Universe::heap()->is_gc_active(), "called outside gc"); | |
| 147 | |
| 148 PSPromotionManager* pm = | |
| 149 PSPromotionManager::gc_thread_promotion_manager(which); | |
| 150 pm->drain_stacks(true); | |
| 151 guarantee(pm->stacks_empty(), | |
| 152 "stacks should be empty at this point"); | |
| 153 | |
| 154 int random_seed = 17; | |
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155 while(true) { |
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156 StarTask p; |
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157 if (PSPromotionManager::steal_depth(which, &random_seed, p)) { |
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158 TASKQUEUE_STATS_ONLY(pm->record_steal(p)); |
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159 pm->process_popped_location_depth(p); |
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160 pm->drain_stacks_depth(true); |
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161 } else { |
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162 if (terminator()->offer_termination()) { |
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163 break; |
| 0 | 164 } |
| 165 } | |
| 166 } | |
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167 guarantee(pm->stacks_empty(), "stacks should be empty at this point"); |
| 0 | 168 } |
| 169 | |
| 170 // | |
| 171 // OldToYoungRootsTask | |
| 172 // | |
| 173 | |
| 174 void OldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 6817 | 175 // There are not old-to-young pointers if the old gen is empty. |
| 176 assert(!_gen->object_space()->is_empty(), | |
| 177 "Should not be called is there is no work"); | |
| 0 | 178 assert(_gen != NULL, "Sanity"); |
| 179 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
| 180 assert(_stripe_number < ParallelGCThreads, "Sanity"); | |
| 181 | |
| 182 { | |
| 183 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
| 184 | |
| 185 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
| 186 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
| 187 // FIX ME! Assert that card_table is the type we believe it to be. | |
| 188 | |
| 189 card_table->scavenge_contents_parallel(_gen->start_array(), | |
| 190 _gen->object_space(), | |
| 191 _gen_top, | |
| 192 pm, | |
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193 _stripe_number, |
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194 _stripe_total); |
| 0 | 195 |
| 196 // Do the real work | |
| 197 pm->drain_stacks(false); | |
| 198 } | |
| 199 } |