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annotate src/share/vm/gc_implementation/parallelScavenge/psTasks.cpp @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
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| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 148e5441d916 |
| children | a93a9eda13f7 |
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| 0 | 1 /* |
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2 * Copyright (c) 2002, 2008, 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 | |
| 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 | |
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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 } | |
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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)) { |
| 151 #if PS_PM_STATS | |
| 152 pm->increment_steals(p); | |
| 153 #endif // PS_PM_STATS | |
| 154 pm->process_popped_location_depth(p); | |
| 155 pm->drain_stacks_depth(true); | |
| 156 } else { | |
| 157 if (terminator()->offer_termination()) { | |
| 158 break; | |
| 159 } | |
| 160 } | |
| 161 } | |
| 162 } else { | |
| 163 while(true) { | |
| 164 oop obj; | |
| 165 if (PSPromotionManager::steal_breadth(which, &random_seed, obj)) { | |
| 166 #if PS_PM_STATS | |
| 167 pm->increment_steals(); | |
| 168 #endif // PS_PM_STATS | |
| 169 obj->copy_contents(pm); | |
| 170 pm->drain_stacks_breadth(true); | |
| 171 } else { | |
| 172 if (terminator()->offer_termination()) { | |
| 173 break; | |
| 174 } | |
| 175 } | |
| 176 } | |
| 177 } | |
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178 guarantee(pm->stacks_empty(), "stacks should be empty at this point"); |
| 0 | 179 } |
| 180 | |
| 181 // | |
| 182 // SerialOldToYoungRootsTask | |
| 183 // | |
| 184 | |
| 185 void SerialOldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 186 assert(_gen != NULL, "Sanity"); | |
| 187 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
| 188 | |
| 189 { | |
| 190 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
| 191 | |
| 192 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
| 193 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
| 194 // FIX ME! Assert that card_table is the type we believe it to be. | |
| 195 | |
| 196 card_table->scavenge_contents(_gen->start_array(), | |
| 197 _gen->object_space(), | |
| 198 _gen_top, | |
| 199 pm); | |
| 200 | |
| 201 // Do the real work | |
| 202 pm->drain_stacks(false); | |
| 203 } | |
| 204 } | |
| 205 | |
| 206 // | |
| 207 // OldToYoungRootsTask | |
| 208 // | |
| 209 | |
| 210 void OldToYoungRootsTask::do_it(GCTaskManager* manager, uint which) { | |
| 211 assert(_gen != NULL, "Sanity"); | |
| 212 assert(_gen->object_space()->contains(_gen_top) || _gen_top == _gen->object_space()->top(), "Sanity"); | |
| 213 assert(_stripe_number < ParallelGCThreads, "Sanity"); | |
| 214 | |
| 215 { | |
| 216 PSPromotionManager* pm = PSPromotionManager::gc_thread_promotion_manager(which); | |
| 217 | |
| 218 assert(Universe::heap()->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity"); | |
| 219 CardTableExtension* card_table = (CardTableExtension *)Universe::heap()->barrier_set(); | |
| 220 // FIX ME! Assert that card_table is the type we believe it to be. | |
| 221 | |
| 222 card_table->scavenge_contents_parallel(_gen->start_array(), | |
| 223 _gen->object_space(), | |
| 224 _gen_top, | |
| 225 pm, | |
| 226 _stripe_number); | |
| 227 | |
| 228 // Do the real work | |
| 229 pm->drain_stacks(false); | |
| 230 } | |
| 231 } |