truffle: src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp annotate

annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 6725:da91efe96a93

6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>

author	coleenp
date	Sat, 01 Sep 2012 13:25:18 -0400
parents	bca17e38de00
children	d8ce2825b193

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4095 diff changeset	2 * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
0 a61af66fc99e Initial load duke parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
a61af66fc99e Initial load duke parents: diff changeset	4 *
a61af66fc99e Initial load duke parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
a61af66fc99e Initial load duke parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
a61af66fc99e Initial load duke parents: diff changeset	7 * published by the Free Software Foundation.
a61af66fc99e Initial load duke parents: diff changeset	8 *
a61af66fc99e Initial load duke parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
a61af66fc99e Initial load duke parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
a61af66fc99e Initial load duke parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
a61af66fc99e Initial load duke parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
a61af66fc99e Initial load duke parents: diff changeset	13 * accompanied this code).
a61af66fc99e Initial load duke parents: diff changeset	14 *
a61af66fc99e Initial load duke parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
a61af66fc99e Initial load duke parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
a61af66fc99e Initial load duke parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
a61af66fc99e Initial load duke parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1311 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1311 diff changeset	20 * or visit www.oracle.com if you need additional information or have any
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1311 diff changeset	21 * questions.
0 a61af66fc99e Initial load duke parents: diff changeset	22 *
a61af66fc99e Initial load duke parents: diff changeset	23 */
a61af66fc99e Initial load duke parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	25 #include "precompiled.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	26 #include "classfile/systemDictionary.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	27 #include "code/codeCache.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	28 #include "gc_implementation/parallelScavenge/pcTasks.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	29 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	30 #include "gc_interface/collectedHeap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	31 #include "memory/universe.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	32 #include "oops/objArrayKlass.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	33 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	34 #include "oops/oop.pcgc.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	35 #include "prims/jvmtiExport.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	36 #include "runtime/fprofiler.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	37 #include "runtime/jniHandles.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	38 #include "runtime/thread.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	39 #include "runtime/vmThread.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	40 #include "services/management.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	41
a61af66fc99e Initial load duke parents: diff changeset	42 //
a61af66fc99e Initial load duke parents: diff changeset	43 // ThreadRootsMarkingTask
a61af66fc99e Initial load duke parents: diff changeset	44 //
a61af66fc99e Initial load duke parents: diff changeset	45
a61af66fc99e Initial load duke parents: diff changeset	46 void ThreadRootsMarkingTask::do_it(GCTaskManager* manager, uint which) {
a61af66fc99e Initial load duke parents: diff changeset	47 assert(Universe::heap()->is_gc_active(), "called outside gc");
a61af66fc99e Initial load duke parents: diff changeset	48
a61af66fc99e Initial load duke parents: diff changeset	49 ResourceMark rm;
a61af66fc99e Initial load duke parents: diff changeset	50
a61af66fc99e Initial load duke parents: diff changeset	51 NOT_PRODUCT(TraceTime tm("ThreadRootsMarkingTask",
a61af66fc99e Initial load duke parents: diff changeset	52 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	53 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	54 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	55 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	56 CodeBlobToOopClosure mark_and_push_in_blobs(&mark_and_push_closure, /do_marking=/ true);
0 a61af66fc99e Initial load duke parents: diff changeset	57
a61af66fc99e Initial load duke parents: diff changeset	58 if (_java_thread != NULL)
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	59 _java_thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs);
0 a61af66fc99e Initial load duke parents: diff changeset	60
a61af66fc99e Initial load duke parents: diff changeset	61 if (_vm_thread != NULL)
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	62 _vm_thread->oops_do(&mark_and_push_closure, &mark_and_push_in_blobs);
0 a61af66fc99e Initial load duke parents: diff changeset	63
a61af66fc99e Initial load duke parents: diff changeset	64 // Do the real work
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	65 cm->follow_marking_stacks();
0 a61af66fc99e Initial load duke parents: diff changeset	66 }
a61af66fc99e Initial load duke parents: diff changeset	67
a61af66fc99e Initial load duke parents: diff changeset	68
a61af66fc99e Initial load duke parents: diff changeset	69 void MarkFromRootsTask::do_it(GCTaskManager* manager, uint which) {
a61af66fc99e Initial load duke parents: diff changeset	70 assert(Universe::heap()->is_gc_active(), "called outside gc");
a61af66fc99e Initial load duke parents: diff changeset	71
a61af66fc99e Initial load duke parents: diff changeset	72 NOT_PRODUCT(TraceTime tm("MarkFromRootsTask",
a61af66fc99e Initial load duke parents: diff changeset	73 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	74 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	75 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	76 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4095 diff changeset	77 PSParallelCompact::FollowKlassClosure follow_klass_closure(&mark_and_push_closure);
0 a61af66fc99e Initial load duke parents: diff changeset	78
a61af66fc99e Initial load duke parents: diff changeset	79 switch (_root_type) {
a61af66fc99e Initial load duke parents: diff changeset	80 case universe:
a61af66fc99e Initial load duke parents: diff changeset	81 Universe::oops_do(&mark_and_push_closure);
a61af66fc99e Initial load duke parents: diff changeset	82 break;
a61af66fc99e Initial load duke parents: diff changeset	83
a61af66fc99e Initial load duke parents: diff changeset	84 case jni_handles:
a61af66fc99e Initial load duke parents: diff changeset	85 JNIHandles::oops_do(&mark_and_push_closure);
a61af66fc99e Initial load duke parents: diff changeset	86 break;
a61af66fc99e Initial load duke parents: diff changeset	87
a61af66fc99e Initial load duke parents: diff changeset	88 case threads:
a61af66fc99e Initial load duke parents: diff changeset	89 {
a61af66fc99e Initial load duke parents: diff changeset	90 ResourceMark rm;
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	91 CodeBlobToOopClosure each_active_code_blob(&mark_and_push_closure, /do_marking=/ true);
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	92 Threads::oops_do(&mark_and_push_closure, &each_active_code_blob);
0 a61af66fc99e Initial load duke parents: diff changeset	93 }
a61af66fc99e Initial load duke parents: diff changeset	94 break;
a61af66fc99e Initial load duke parents: diff changeset	95
a61af66fc99e Initial load duke parents: diff changeset	96 case object_synchronizer:
a61af66fc99e Initial load duke parents: diff changeset	97 ObjectSynchronizer::oops_do(&mark_and_push_closure);
a61af66fc99e Initial load duke parents: diff changeset	98 break;
a61af66fc99e Initial load duke parents: diff changeset	99
a61af66fc99e Initial load duke parents: diff changeset	100 case flat_profiler:
a61af66fc99e Initial load duke parents: diff changeset	101 FlatProfiler::oops_do(&mark_and_push_closure);
a61af66fc99e Initial load duke parents: diff changeset	102 break;
a61af66fc99e Initial load duke parents: diff changeset	103
a61af66fc99e Initial load duke parents: diff changeset	104 case management:
a61af66fc99e Initial load duke parents: diff changeset	105 Management::oops_do(&mark_and_push_closure);
a61af66fc99e Initial load duke parents: diff changeset	106 break;
a61af66fc99e Initial load duke parents: diff changeset	107
a61af66fc99e Initial load duke parents: diff changeset	108 case jvmti:
a61af66fc99e Initial load duke parents: diff changeset	109 JvmtiExport::oops_do(&mark_and_push_closure);
a61af66fc99e Initial load duke parents: diff changeset	110 break;
a61af66fc99e Initial load duke parents: diff changeset	111
a61af66fc99e Initial load duke parents: diff changeset	112 case system_dictionary:
a61af66fc99e Initial load duke parents: diff changeset	113 SystemDictionary::always_strong_oops_do(&mark_and_push_closure);
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4095 diff changeset	114 ClassLoaderDataGraph::always_strong_oops_do(&mark_and_push_closure, &follow_klass_closure, true);
0 a61af66fc99e Initial load duke parents: diff changeset	115 break;
a61af66fc99e Initial load duke parents: diff changeset	116
989 148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	117 case code_cache:
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	118 // Do not treat nmethods as strong roots for mark/sweep, since we can unload them.
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	119 //CodeCache::scavenge_root_nmethods_do(CodeBlobToOopClosure(&mark_and_push_closure));
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	120 break;
148e5441d916 6863023: need non-perm oops in code cache for JSR 292 jrose parents: 375 diff changeset	121
0 a61af66fc99e Initial load duke parents: diff changeset	122 default:
a61af66fc99e Initial load duke parents: diff changeset	123 fatal("Unknown root type");
a61af66fc99e Initial load duke parents: diff changeset	124 }
a61af66fc99e Initial load duke parents: diff changeset	125
a61af66fc99e Initial load duke parents: diff changeset	126 // Do the real work
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	127 cm->follow_marking_stacks();
0 a61af66fc99e Initial load duke parents: diff changeset	128 }
a61af66fc99e Initial load duke parents: diff changeset	129
a61af66fc99e Initial load duke parents: diff changeset	130
a61af66fc99e Initial load duke parents: diff changeset	131 //
a61af66fc99e Initial load duke parents: diff changeset	132 // RefProcTaskProxy
a61af66fc99e Initial load duke parents: diff changeset	133 //
a61af66fc99e Initial load duke parents: diff changeset	134
a61af66fc99e Initial load duke parents: diff changeset	135 void RefProcTaskProxy::do_it(GCTaskManager* manager, uint which)
a61af66fc99e Initial load duke parents: diff changeset	136 {
a61af66fc99e Initial load duke parents: diff changeset	137 assert(Universe::heap()->is_gc_active(), "called outside gc");
a61af66fc99e Initial load duke parents: diff changeset	138
a61af66fc99e Initial load duke parents: diff changeset	139 NOT_PRODUCT(TraceTime tm("RefProcTask",
a61af66fc99e Initial load duke parents: diff changeset	140 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	141 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	142 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	143 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
a61af66fc99e Initial load duke parents: diff changeset	144 PSParallelCompact::FollowStackClosure follow_stack_closure(cm);
a61af66fc99e Initial load duke parents: diff changeset	145 _rp_task.work(_work_id, *PSParallelCompact::is_alive_closure(),
a61af66fc99e Initial load duke parents: diff changeset	146 mark_and_push_closure, follow_stack_closure);
a61af66fc99e Initial load duke parents: diff changeset	147 }
a61af66fc99e Initial load duke parents: diff changeset	148
a61af66fc99e Initial load duke parents: diff changeset	149 //
a61af66fc99e Initial load duke parents: diff changeset	150 // RefProcTaskExecutor
a61af66fc99e Initial load duke parents: diff changeset	151 //
a61af66fc99e Initial load duke parents: diff changeset	152
a61af66fc99e Initial load duke parents: diff changeset	153 void RefProcTaskExecutor::execute(ProcessTask& task)
a61af66fc99e Initial load duke parents: diff changeset	154 {
a61af66fc99e Initial load duke parents: diff changeset	155 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap();
a61af66fc99e Initial load duke parents: diff changeset	156 uint parallel_gc_threads = heap->gc_task_manager()->workers();
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	157 uint active_gc_threads = heap->gc_task_manager()->active_workers();
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	158 RegionTaskQueueSet* qset = ParCompactionManager::region_array();
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	159 ParallelTaskTerminator terminator(active_gc_threads, qset);
0 a61af66fc99e Initial load duke parents: diff changeset	160 GCTaskQueue* q = GCTaskQueue::create();
a61af66fc99e Initial load duke parents: diff changeset	161 for(uint i=0; i<parallel_gc_threads; i++) {
a61af66fc99e Initial load duke parents: diff changeset	162 q->enqueue(new RefProcTaskProxy(task, i));
a61af66fc99e Initial load duke parents: diff changeset	163 }
a61af66fc99e Initial load duke parents: diff changeset	164 if (task.marks_oops_alive()) {
a61af66fc99e Initial load duke parents: diff changeset	165 if (parallel_gc_threads>1) {
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	166 for (uint j=0; j<active_gc_threads; j++) {
0 a61af66fc99e Initial load duke parents: diff changeset	167 q->enqueue(new StealMarkingTask(&terminator));
a61af66fc99e Initial load duke parents: diff changeset	168 }
a61af66fc99e Initial load duke parents: diff changeset	169 }
a61af66fc99e Initial load duke parents: diff changeset	170 }
a61af66fc99e Initial load duke parents: diff changeset	171 PSParallelCompact::gc_task_manager()->execute_and_wait(q);
a61af66fc99e Initial load duke parents: diff changeset	172 }
a61af66fc99e Initial load duke parents: diff changeset	173
a61af66fc99e Initial load duke parents: diff changeset	174 void RefProcTaskExecutor::execute(EnqueueTask& task)
a61af66fc99e Initial load duke parents: diff changeset	175 {
a61af66fc99e Initial load duke parents: diff changeset	176 ParallelScavengeHeap* heap = PSParallelCompact::gc_heap();
a61af66fc99e Initial load duke parents: diff changeset	177 uint parallel_gc_threads = heap->gc_task_manager()->workers();
a61af66fc99e Initial load duke parents: diff changeset	178 GCTaskQueue* q = GCTaskQueue::create();
a61af66fc99e Initial load duke parents: diff changeset	179 for(uint i=0; i<parallel_gc_threads; i++) {
a61af66fc99e Initial load duke parents: diff changeset	180 q->enqueue(new RefEnqueueTaskProxy(task, i));
a61af66fc99e Initial load duke parents: diff changeset	181 }
a61af66fc99e Initial load duke parents: diff changeset	182 PSParallelCompact::gc_task_manager()->execute_and_wait(q);
a61af66fc99e Initial load duke parents: diff changeset	183 }
a61af66fc99e Initial load duke parents: diff changeset	184
a61af66fc99e Initial load duke parents: diff changeset	185 //
a61af66fc99e Initial load duke parents: diff changeset	186 // StealMarkingTask
a61af66fc99e Initial load duke parents: diff changeset	187 //
a61af66fc99e Initial load duke parents: diff changeset	188
a61af66fc99e Initial load duke parents: diff changeset	189 StealMarkingTask::StealMarkingTask(ParallelTaskTerminator* t) :
a61af66fc99e Initial load duke parents: diff changeset	190 _terminator(t) {}
a61af66fc99e Initial load duke parents: diff changeset	191
a61af66fc99e Initial load duke parents: diff changeset	192 void StealMarkingTask::do_it(GCTaskManager* manager, uint which) {
a61af66fc99e Initial load duke parents: diff changeset	193 assert(Universe::heap()->is_gc_active(), "called outside gc");
a61af66fc99e Initial load duke parents: diff changeset	194
a61af66fc99e Initial load duke parents: diff changeset	195 NOT_PRODUCT(TraceTime tm("StealMarkingTask",
a61af66fc99e Initial load duke parents: diff changeset	196 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	197
a61af66fc99e Initial load duke parents: diff changeset	198 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	199 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	200 PSParallelCompact::MarkAndPushClosure mark_and_push_closure(cm);
a61af66fc99e Initial load duke parents: diff changeset	201
a61af66fc99e Initial load duke parents: diff changeset	202 oop obj = NULL;
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	203 ObjArrayTask task;
0 a61af66fc99e Initial load duke parents: diff changeset	204 int random_seed = 17;
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	205 do {
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	206 while (ParCompactionManager::steal_objarray(which, &random_seed, task)) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 4095 diff changeset	207 objArrayKlass* const k = (objArrayKlass*)task.obj()->klass();
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	208 k->oop_follow_contents(cm, task.obj(), task.index());
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	209 cm->follow_marking_stacks();
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	210 }
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	211 while (ParCompactionManager::steal(which, &random_seed, obj)) {
0 a61af66fc99e Initial load duke parents: diff changeset	212 obj->follow_contents(cm);
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	213 cm->follow_marking_stacks();
0 a61af66fc99e Initial load duke parents: diff changeset	214 }
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 1000 diff changeset	215 } while (!terminator()->offer_termination());
0 a61af66fc99e Initial load duke parents: diff changeset	216 }
a61af66fc99e Initial load duke parents: diff changeset	217
a61af66fc99e Initial load duke parents: diff changeset	218 //
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	219 // StealRegionCompactionTask
0 a61af66fc99e Initial load duke parents: diff changeset	220 //
a61af66fc99e Initial load duke parents: diff changeset	221
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	222 StealRegionCompactionTask::StealRegionCompactionTask(ParallelTaskTerminator* t):
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	223 _terminator(t) {}
0 a61af66fc99e Initial load duke parents: diff changeset	224
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	225 void StealRegionCompactionTask::do_it(GCTaskManager* manager, uint which) {
0 a61af66fc99e Initial load duke parents: diff changeset	226 assert(Universe::heap()->is_gc_active(), "called outside gc");
a61af66fc99e Initial load duke parents: diff changeset	227
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	228 NOT_PRODUCT(TraceTime tm("StealRegionCompactionTask",
0 a61af66fc99e Initial load duke parents: diff changeset	229 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	230
a61af66fc99e Initial load duke parents: diff changeset	231 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	232 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	233
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	234
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	235 // If not all threads are active, get a draining stack
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	236 // from the list. Else, just use this threads draining stack.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	237 uint which_stack_index;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	238 bool use_all_workers = manager->all_workers_active();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	239 if (use_all_workers) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	240 which_stack_index = which;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	241 assert(manager->active_workers() == ParallelGCThreads,
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	242 err_msg("all_workers_active has been incorrectly set: "
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	243 " active %d ParallelGCThreads %d", manager->active_workers(),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	244 ParallelGCThreads));
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	245 } else {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	246 which_stack_index = ParCompactionManager::pop_recycled_stack_index();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	247 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	248
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	249 cm->set_region_stack_index(which_stack_index);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	250 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index));
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	251 if (TraceDynamicGCThreads) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	252 gclog_or_tty->print_cr("StealRegionCompactionTask::do_it "
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	253 "region_stack_index %d region_stack = 0x%x "
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	254 " empty (%d) use all workers %d",
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	255 which_stack_index, ParCompactionManager::region_list(which_stack_index),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	256 cm->region_stack()->is_empty(),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	257 use_all_workers);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	258 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	259
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	260 // Has to drain stacks first because there may be regions on
0 a61af66fc99e Initial load duke parents: diff changeset	261 // preloaded onto the stack and this thread may never have
a61af66fc99e Initial load duke parents: diff changeset	262 // done a draining task. Are the draining tasks needed?
a61af66fc99e Initial load duke parents: diff changeset	263
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	264 cm->drain_region_stacks();
0 a61af66fc99e Initial load duke parents: diff changeset	265
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	266 size_t region_index = 0;
0 a61af66fc99e Initial load duke parents: diff changeset	267 int random_seed = 17;
a61af66fc99e Initial load duke parents: diff changeset	268
a61af66fc99e Initial load duke parents: diff changeset	269 // If we're the termination task, try 10 rounds of stealing before
a61af66fc99e Initial load duke parents: diff changeset	270 // setting the termination flag
a61af66fc99e Initial load duke parents: diff changeset	271
a61af66fc99e Initial load duke parents: diff changeset	272 while(true) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	273 if (ParCompactionManager::steal(which, &random_seed, region_index)) {
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	274 PSParallelCompact::fill_and_update_region(cm, region_index);
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	275 cm->drain_region_stacks();
0 a61af66fc99e Initial load duke parents: diff changeset	276 } else {
a61af66fc99e Initial load duke parents: diff changeset	277 if (terminator()->offer_termination()) {
a61af66fc99e Initial load duke parents: diff changeset	278 break;
a61af66fc99e Initial load duke parents: diff changeset	279 }
a61af66fc99e Initial load duke parents: diff changeset	280 // Go around again.
a61af66fc99e Initial load duke parents: diff changeset	281 }
a61af66fc99e Initial load duke parents: diff changeset	282 }
a61af66fc99e Initial load duke parents: diff changeset	283 return;
a61af66fc99e Initial load duke parents: diff changeset	284 }
a61af66fc99e Initial load duke parents: diff changeset	285
a61af66fc99e Initial load duke parents: diff changeset	286 UpdateDensePrefixTask::UpdateDensePrefixTask(
a61af66fc99e Initial load duke parents: diff changeset	287 PSParallelCompact::SpaceId space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	288 size_t region_index_start,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	289 size_t region_index_end) :
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	290 _space_id(space_id), _region_index_start(region_index_start),
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	291 _region_index_end(region_index_end) {}
0 a61af66fc99e Initial load duke parents: diff changeset	292
a61af66fc99e Initial load duke parents: diff changeset	293 void UpdateDensePrefixTask::do_it(GCTaskManager* manager, uint which) {
a61af66fc99e Initial load duke parents: diff changeset	294
a61af66fc99e Initial load duke parents: diff changeset	295 NOT_PRODUCT(TraceTime tm("UpdateDensePrefixTask",
a61af66fc99e Initial load duke parents: diff changeset	296 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	297
a61af66fc99e Initial load duke parents: diff changeset	298 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	299 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	300
a61af66fc99e Initial load duke parents: diff changeset	301 PSParallelCompact::update_and_deadwood_in_dense_prefix(cm,
a61af66fc99e Initial load duke parents: diff changeset	302 _space_id,
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	303 _region_index_start,
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	304 _region_index_end);
0 a61af66fc99e Initial load duke parents: diff changeset	305 }
a61af66fc99e Initial load duke parents: diff changeset	306
a61af66fc99e Initial load duke parents: diff changeset	307 void DrainStacksCompactionTask::do_it(GCTaskManager* manager, uint which) {
a61af66fc99e Initial load duke parents: diff changeset	308 assert(Universe::heap()->is_gc_active(), "called outside gc");
a61af66fc99e Initial load duke parents: diff changeset	309
a61af66fc99e Initial load duke parents: diff changeset	310 NOT_PRODUCT(TraceTime tm("DrainStacksCompactionTask",
a61af66fc99e Initial load duke parents: diff changeset	311 PrintGCDetails && TraceParallelOldGCTasks, true, gclog_or_tty));
a61af66fc99e Initial load duke parents: diff changeset	312
a61af66fc99e Initial load duke parents: diff changeset	313 ParCompactionManager* cm =
a61af66fc99e Initial load duke parents: diff changeset	314 ParCompactionManager::gc_thread_compaction_manager(which);
a61af66fc99e Initial load duke parents: diff changeset	315
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	316 uint which_stack_index;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	317 bool use_all_workers = manager->all_workers_active();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	318 if (use_all_workers) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	319 which_stack_index = which;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	320 assert(manager->active_workers() == ParallelGCThreads,
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	321 err_msg("all_workers_active has been incorrectly set: "
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	322 " active %d ParallelGCThreads %d", manager->active_workers(),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	323 ParallelGCThreads));
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	324 } else {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	325 which_stack_index = stack_index();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	326 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	327
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	328 cm->set_region_stack(ParCompactionManager::region_list(which_stack_index));
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	329 if (TraceDynamicGCThreads) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	330 gclog_or_tty->print_cr("DrainStacksCompactionTask::do_it which = %d "
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	331 "which_stack_index = %d/empty(%d) "
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	332 "use all workers %d",
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	333 which, which_stack_index,
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	334 cm->region_stack()->is_empty(),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	335 use_all_workers);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	336 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	337
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	338 cm->set_region_stack_index(which_stack_index);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	339
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	340 // Process any regions already in the compaction managers stacks.
81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 196 diff changeset	341 cm->drain_region_stacks();
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	342
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	343 assert(cm->region_stack()->is_empty(), "Not empty");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	344
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	345 if (!use_all_workers) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	346 // Always give up the region stack.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	347 assert(cm->region_stack() ==
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	348 ParCompactionManager::region_list(cm->region_stack_index()),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	349 "region_stack and region_stack_index are inconsistent");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	350 ParCompactionManager::push_recycled_stack_index(cm->region_stack_index());
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	351
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	352 if (TraceDynamicGCThreads) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	353 void* old_region_stack = (void*) cm->region_stack();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	354 int old_region_stack_index = cm->region_stack_index();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	355 gclog_or_tty->print_cr("Pushing region stack 0x%x/%d",
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	356 old_region_stack, old_region_stack_index);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	357 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	358
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	359 cm->set_region_stack(NULL);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	360 cm->set_region_stack_index((uint)max_uintx);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 3915 diff changeset	361 }
0 a61af66fc99e Initial load duke parents: diff changeset	362 }

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/parallelScavenge/pcTasks.cpp @ 6725:da91efe96a93