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

annotate src/share/vm/gc_implementation/parallelScavenge/psCompactionManager.cpp @ 10265:92ef81e2f571

8003557: NPG: Klass* const k should be const Klass* k. Summary: With NPG, const KlassOop klass which is in fact a definition converted to Klass* const, which is not the original intention. The right usage is converting them to const Klass*. Reviewed-by: coleenp, kvn Contributed-by: yumin.qi@oracle.com

author	minqi
date	Fri, 10 May 2013 08:27:30 -0700
parents	d8ce2825b193
children

rev	line source
0 a61af66fc99e Initial load duke parents: diff changeset	1 /*
10265 92ef81e2f571 8003557: NPG: Klass* const k should be const Klass* k. minqi parents: 6831 diff changeset	2 * Copyright (c) 2005, 2013, 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: 1315 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1315 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: 1315 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 "gc_implementation/parallelScavenge/gcTaskManager.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	28 #include "gc_implementation/parallelScavenge/objectStartArray.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	29 #include "gc_implementation/parallelScavenge/parMarkBitMap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	30 #include "gc_implementation/parallelScavenge/parallelScavengeHeap.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	31 #include "gc_implementation/parallelScavenge/psCompactionManager.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	32 #include "gc_implementation/parallelScavenge/psOldGen.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	33 #include "gc_implementation/parallelScavenge/psParallelCompact.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	34 #include "oops/objArrayKlass.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	35 #include "oops/oop.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	36 #include "oops/oop.pcgc.inline.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1836 diff changeset	37 #include "utilities/stack.inline.hpp"
0 a61af66fc99e Initial load duke parents: diff changeset	38
a61af66fc99e Initial load duke parents: diff changeset	39 PSOldGen* ParCompactionManager::_old_gen = NULL;
a61af66fc99e Initial load duke parents: diff changeset	40 ParCompactionManager** ParCompactionManager::_manager_array = NULL;
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	41
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	42 RegionTaskQueue** ParCompactionManager::_region_list = NULL;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	43
0 a61af66fc99e Initial load duke parents: diff changeset	44 OopTaskQueueSet* ParCompactionManager::_stack_array = NULL;
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	45 ParCompactionManager::ObjArrayTaskQueueSet*
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	46 ParCompactionManager::_objarray_queues = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	47 ObjectStartArray* ParCompactionManager::_start_array = NULL;
a61af66fc99e Initial load duke parents: diff changeset	48 ParMarkBitMap* ParCompactionManager::_mark_bitmap = NULL;
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	49 RegionTaskQueueSet* ParCompactionManager::_region_array = NULL;
0 a61af66fc99e Initial load duke parents: diff changeset	50
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	51 uint* ParCompactionManager::_recycled_stack_index = NULL;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	52 int ParCompactionManager::_recycled_top = -1;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	53 int ParCompactionManager::_recycled_bottom = -1;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	54
0 a61af66fc99e Initial load duke parents: diff changeset	55 ParCompactionManager::ParCompactionManager() :
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	56 _action(CopyAndUpdate),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	57 _region_stack(NULL),
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	58 _region_stack_index((uint)max_uintx) {
0 a61af66fc99e Initial load duke parents: diff changeset	59
a61af66fc99e Initial load duke parents: diff changeset	60 ParallelScavengeHeap* heap = (ParallelScavengeHeap*)Universe::heap();
a61af66fc99e Initial load duke parents: diff changeset	61 assert(heap->kind() == CollectedHeap::ParallelScavengeHeap, "Sanity");
a61af66fc99e Initial load duke parents: diff changeset	62
a61af66fc99e Initial load duke parents: diff changeset	63 _old_gen = heap->old_gen();
a61af66fc99e Initial load duke parents: diff changeset	64 _start_array = old_gen()->start_array();
a61af66fc99e Initial load duke parents: diff changeset	65
a61af66fc99e Initial load duke parents: diff changeset	66 marking_stack()->initialize();
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	67 _objarray_stack.initialize();
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	68 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	69
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	70 ParCompactionManager::~ParCompactionManager() {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	71 delete _recycled_stack_index;
0 a61af66fc99e Initial load duke parents: diff changeset	72 }
a61af66fc99e Initial load duke parents: diff changeset	73
a61af66fc99e Initial load duke parents: diff changeset	74 void ParCompactionManager::initialize(ParMarkBitMap* mbm) {
a61af66fc99e Initial load duke parents: diff changeset	75 assert(PSParallelCompact::gc_task_manager() != NULL,
a61af66fc99e Initial load duke parents: diff changeset	76 "Needed for initialization");
a61af66fc99e Initial load duke parents: diff changeset	77
a61af66fc99e Initial load duke parents: diff changeset	78 _mark_bitmap = mbm;
a61af66fc99e Initial load duke parents: diff changeset	79
a61af66fc99e Initial load duke parents: diff changeset	80 uint parallel_gc_threads = PSParallelCompact::gc_task_manager()->workers();
a61af66fc99e Initial load duke parents: diff changeset	81
a61af66fc99e Initial load duke parents: diff changeset	82 assert(_manager_array == NULL, "Attempt to initialize twice");
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4099 diff changeset	83 _manager_array = NEW_C_HEAP_ARRAY(ParCompactionManager*, parallel_gc_threads+1, mtGC);
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	84 guarantee(_manager_array != NULL, "Could not allocate manager_array");
0 a61af66fc99e Initial load duke parents: diff changeset	85
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	86 _region_list = NEW_C_HEAP_ARRAY(RegionTaskQueue*,
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4099 diff changeset	87 parallel_gc_threads+1, mtGC);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	88 guarantee(_region_list != NULL, "Could not initialize promotion manager");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	89
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 4099 diff changeset	90 _recycled_stack_index = NEW_C_HEAP_ARRAY(uint, parallel_gc_threads, mtGC);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	91
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	92 // parallel_gc-threads + 1 to be consistent with the number of
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	93 // compaction managers.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	94 for(uint i=0; i<parallel_gc_threads + 1; i++) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	95 _region_list[i] = new RegionTaskQueue();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	96 region_list(i)->initialize();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	97 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	98
0 a61af66fc99e Initial load duke parents: diff changeset	99 _stack_array = new OopTaskQueueSet(parallel_gc_threads);
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	100 guarantee(_stack_array != NULL, "Could not allocate stack_array");
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	101 _objarray_queues = new ObjArrayTaskQueueSet(parallel_gc_threads);
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	102 guarantee(_objarray_queues != NULL, "Could not allocate objarray_queues");
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 0 diff changeset	103 _region_array = new RegionTaskQueueSet(parallel_gc_threads);
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	104 guarantee(_region_array != NULL, "Could not allocate region_array");
0 a61af66fc99e Initial load duke parents: diff changeset	105
a61af66fc99e Initial load duke parents: diff changeset	106 // Create and register the ParCompactionManager(s) for the worker threads.
a61af66fc99e Initial load duke parents: diff changeset	107 for(uint i=0; i<parallel_gc_threads; i++) {
a61af66fc99e Initial load duke parents: diff changeset	108 _manager_array[i] = new ParCompactionManager();
a61af66fc99e Initial load duke parents: diff changeset	109 guarantee(_manager_array[i] != NULL, "Could not create ParCompactionManager");
a61af66fc99e Initial load duke parents: diff changeset	110 stack_array()->register_queue(i, _manager_array[i]->marking_stack());
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	111 _objarray_queues->register_queue(i, &_manager_array[i]->_objarray_stack);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	112 region_array()->register_queue(i, region_list(i));
0 a61af66fc99e Initial load duke parents: diff changeset	113 }
a61af66fc99e Initial load duke parents: diff changeset	114
a61af66fc99e Initial load duke parents: diff changeset	115 // The VMThread gets its own ParCompactionManager, which is not available
a61af66fc99e Initial load duke parents: diff changeset	116 // for work stealing.
a61af66fc99e Initial load duke parents: diff changeset	117 _manager_array[parallel_gc_threads] = new ParCompactionManager();
a61af66fc99e Initial load duke parents: diff changeset	118 guarantee(_manager_array[parallel_gc_threads] != NULL,
a61af66fc99e Initial load duke parents: diff changeset	119 "Could not create ParCompactionManager");
a61af66fc99e Initial load duke parents: diff changeset	120 assert(PSParallelCompact::gc_task_manager()->workers() != 0,
a61af66fc99e Initial load duke parents: diff changeset	121 "Not initialized?");
a61af66fc99e Initial load duke parents: diff changeset	122 }
a61af66fc99e Initial load duke parents: diff changeset	123
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	124 int ParCompactionManager::pop_recycled_stack_index() {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	125 assert(_recycled_bottom <= _recycled_top, "list is empty");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	126 // Get the next available index
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	127 if (_recycled_bottom < _recycled_top) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	128 uint cur, next, last;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	129 do {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	130 cur = _recycled_bottom;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	131 next = cur + 1;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	132 last = Atomic::cmpxchg(next, &_recycled_bottom, cur);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	133 } while (cur != last);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	134 return _recycled_stack_index[next];
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	135 } else {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	136 return -1;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	137 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	138 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	139
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	140 void ParCompactionManager::push_recycled_stack_index(uint v) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	141 // Get the next available index
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	142 int cur = Atomic::add(1, &_recycled_top);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	143 _recycled_stack_index[cur] = v;
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	144 assert(_recycled_bottom <= _recycled_top, "list top and bottom are wrong");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	145 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	146
0 a61af66fc99e Initial load duke parents: diff changeset	147 bool ParCompactionManager::should_update() {
a61af66fc99e Initial load duke parents: diff changeset	148 assert(action() != NotValid, "Action is not set");
a61af66fc99e Initial load duke parents: diff changeset	149 return (action() == ParCompactionManager::Update) \|\|
a61af66fc99e Initial load duke parents: diff changeset	150 (action() == ParCompactionManager::CopyAndUpdate) \|\|
a61af66fc99e Initial load duke parents: diff changeset	151 (action() == ParCompactionManager::UpdateAndCopy);
a61af66fc99e Initial load duke parents: diff changeset	152 }
a61af66fc99e Initial load duke parents: diff changeset	153
a61af66fc99e Initial load duke parents: diff changeset	154 bool ParCompactionManager::should_copy() {
a61af66fc99e Initial load duke parents: diff changeset	155 assert(action() != NotValid, "Action is not set");
a61af66fc99e Initial load duke parents: diff changeset	156 return (action() == ParCompactionManager::Copy) \|\|
a61af66fc99e Initial load duke parents: diff changeset	157 (action() == ParCompactionManager::CopyAndUpdate) \|\|
a61af66fc99e Initial load duke parents: diff changeset	158 (action() == ParCompactionManager::UpdateAndCopy);
a61af66fc99e Initial load duke parents: diff changeset	159 }
a61af66fc99e Initial load duke parents: diff changeset	160
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	161 void ParCompactionManager::region_list_push(uint list_index,
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	162 size_t region_index) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	163 region_list(list_index)->push(region_index);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	164 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	165
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	166 void ParCompactionManager::verify_region_list_empty(uint list_index) {
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	167 assert(region_list(list_index)->is_empty(), "Not empty");
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	168 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 1972 diff changeset	169
0 a61af66fc99e Initial load duke parents: diff changeset	170 ParCompactionManager*
a61af66fc99e Initial load duke parents: diff changeset	171 ParCompactionManager::gc_thread_compaction_manager(int index) {
a61af66fc99e Initial load duke parents: diff changeset	172 assert(index >= 0 && index < (int)ParallelGCThreads, "index out of range");
a61af66fc99e Initial load duke parents: diff changeset	173 assert(_manager_array != NULL, "Sanity");
a61af66fc99e Initial load duke parents: diff changeset	174 return _manager_array[index];
a61af66fc99e Initial load duke parents: diff changeset	175 }
a61af66fc99e Initial load duke parents: diff changeset	176
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	177 void ParCompactionManager::follow_marking_stacks() {
0 a61af66fc99e Initial load duke parents: diff changeset	178 do {
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	179 // Drain the overflow stack first, to allow stealing from the marking stack.
1315 c385bf94cfb8 6935839: excessive marking stack growth during full gcs jcoomes parents: 1311 diff changeset	180 oop obj;
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	181 while (marking_stack()->pop_overflow(obj)) {
b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	182 obj->follow_contents(this);
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	183 }
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	184 while (marking_stack()->pop_local(obj)) {
0 a61af66fc99e Initial load duke parents: diff changeset	185 obj->follow_contents(this);
a61af66fc99e Initial load duke parents: diff changeset	186 }
a61af66fc99e Initial load duke parents: diff changeset	187
1315 c385bf94cfb8 6935839: excessive marking stack growth during full gcs jcoomes parents: 1311 diff changeset	188 // Process ObjArrays one at a time to avoid marking stack bloat.
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	189 ObjArrayTask task;
10265 92ef81e2f571 8003557: NPG: Klass* const k should be const Klass* k. minqi parents: 6831 diff changeset	190 if (_objarray_stack.pop_overflow(task) \|\| _objarray_stack.pop_local(task)) {
92ef81e2f571 8003557: NPG: Klass* const k should be const Klass* k. minqi parents: 6831 diff changeset	191 ObjArrayKlass* k = (ObjArrayKlass*)task.obj()->klass();
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	192 k->oop_follow_contents(this, task.obj(), task.index());
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	193 }
2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	194 } while (!marking_stacks_empty());
0 a61af66fc99e Initial load duke parents: diff changeset	195
1311 2a1472c30599 4396719: Mark Sweep stack overflow on deeply nested Object arrays jcoomes parents: 948 diff changeset	196 assert(marking_stacks_empty(), "Sanity");
0 a61af66fc99e Initial load duke parents: diff changeset	197 }
a61af66fc99e Initial load duke parents: diff changeset	198
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 0 diff changeset	199 void ParCompactionManager::drain_region_stacks() {
0 a61af66fc99e Initial load duke parents: diff changeset	200 do {
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	201 // Drain overflow stack first so other threads can steal.
b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	202 size_t region_index;
b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	203 while (region_stack()->pop_overflow(region_index)) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 0 diff changeset	204 PSParallelCompact::fill_and_update_region(this, region_index);
0 a61af66fc99e Initial load duke parents: diff changeset	205 }
a61af66fc99e Initial load duke parents: diff changeset	206
1638 b2a00dd3117c 6957084: simplify TaskQueue overflow handling jcoomes parents: 1552 diff changeset	207 while (region_stack()->pop_local(region_index)) {
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 0 diff changeset	208 PSParallelCompact::fill_and_update_region(this, region_index);
0 a61af66fc99e Initial load duke parents: diff changeset	209 }
375 81cd571500b0 6725697: par compact - rename class ChunkData to RegionData jcoomes parents: 0 diff changeset	210 } while (!region_stack()->is_empty());
0 a61af66fc99e Initial load duke parents: diff changeset	211 }

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/parallelScavenge/psCompactionManager.cpp @ 10265:92ef81e2f571