truffle: src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp annotate

annotate src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 17833:bfdf528be8e8

8038498: Fix includes and C inlining after 8035330 Summary: Change 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure broke the debug build on AIX. The method do_oop_partial_array() is added in a header, but requires the inline function par_write_ref() through several inlined calls. In some cpp files, like arguments.cpp, par_write_ref() is not defined as the corresponding inline header and is not included. The AIX debug VM does not start because of the missing symbol. This change solves this by cleaning up include dependencies. Reviewed-by: tschatzl, stefank

author	tschatzl
date	Fri, 04 Apr 2014 10:43:56 +0200
parents	8ee855b4e667
children	8847586c9037

rev	line source
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1 /*
17753 191174b49bec 8035406: Improve data structure for Code Cache remembered sets tschatzl parents: 17736 diff changeset	2 * Copyright (c) 2001, 2014, Oracle and/or its affiliates. All rights reserved.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	18 *
1552 c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 diff changeset	19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories trims parents: 1394 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: 1394 diff changeset	21 * questions.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	24
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_HPP
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	27
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	28 #include "gc_implementation/g1/concurrentMark.hpp"
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	29 #include "gc_implementation/g1/evacuationInfo.hpp"
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	30 #include "gc_implementation/g1/g1AllocRegion.hpp"
3778 5f6f2615433a 7049999: G1: Make the G1PrintHeapRegions output consistent and complete tonyp parents: 3777 diff changeset	31 #include "gc_implementation/g1/g1HRPrinter.hpp"
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	32 #include "gc_implementation/g1/g1MonitoringSupport.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	33 #include "gc_implementation/g1/g1RemSet.hpp"
12343 d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	34 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp"
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	35 #include "gc_implementation/g1/g1YCTypes.hpp"
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	36 #include "gc_implementation/g1/heapRegionSeq.hpp"
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	37 #include "gc_implementation/g1/heapRegionSet.hpp"
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	38 #include "gc_implementation/shared/hSpaceCounters.hpp"
6595 aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	39 #include "gc_implementation/shared/parGCAllocBuffer.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	40 #include "memory/barrierSet.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	41 #include "memory/memRegion.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	42 #include "memory/sharedHeap.hpp"
8038 ad747ee9d0b1 8002144: G1: large number of evacuation failures may lead to large c heap memory usage brutisso parents: 6819 diff changeset	43 #include "utilities/stack.hpp"
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	44
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	45 // A "G1CollectedHeap" is an implementation of a java heap for HotSpot.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	46 // It uses the "Garbage First" heap organization and algorithm, which
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	47 // may combine concurrent marking with parallel, incremental compaction of
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	48 // heap subsets that will yield large amounts of garbage.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	49
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	50 // Forward declarations
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	51 class HeapRegion;
2173 97ba643ea3ed 7014261: G1: RSet-related failures tonyp parents: 2152 diff changeset	52 class HRRSCleanupTask;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	53 class GenerationSpec;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	54 class OopsInHeapRegionClosure;
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	55 class G1KlassScanClosure;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	56 class G1ScanHeapEvacClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	57 class ObjectClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	58 class SpaceClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	59 class CompactibleSpaceClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	60 class Space;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	61 class G1CollectorPolicy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	62 class GenRemSet;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	63 class G1RemSet;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	64 class HeapRegionRemSetIterator;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	65 class ConcurrentMark;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	66 class ConcurrentMarkThread;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	67 class ConcurrentG1Refine;
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	68 class ConcurrentGCTimer;
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	69 class GenerationCounters;
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	70 class STWGCTimer;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	71 class G1NewTracer;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	72 class G1OldTracer;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	73 class EvacuationFailedInfo;
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	74 class nmethod;
13400 86e6d691f2e1 8028128: Add a type safe alternative for working with counter based data mgronlun parents: 12352 diff changeset	75 class Ticks;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	76
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6120 diff changeset	77 typedef OverflowTaskQueue<StarTask, mtGC> RefToScanQueue;
d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6120 diff changeset	78 typedef GenericTaskQueueSet<RefToScanQueue, mtGC> RefToScanQueueSet;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	79
807 d44bdab1c03d 6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55 johnc parents: 796 diff changeset	80 typedef int RegionIdx_t; // needs to hold [ 0..max_regions() )
d44bdab1c03d 6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55 johnc parents: 796 diff changeset	81 typedef int CardIdx_t; // needs to hold [ 0..CardsPerRegion )
d44bdab1c03d 6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55 johnc parents: 796 diff changeset	82
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	83 enum GCAllocPurpose {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	84 GCAllocForTenured,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	85 GCAllocForSurvived,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	86 GCAllocPurposeCount
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	87 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	88
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6120 diff changeset	89 class YoungList : public CHeapObj<mtGC> {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	90 private:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	91 G1CollectedHeap* _g1h;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	92
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	93 HeapRegion* _head;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	94
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	95 HeapRegion* _survivor_head;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	96 HeapRegion* _survivor_tail;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	97
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	98 HeapRegion* _curr;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	99
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	100 uint _length;
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	101 uint _survivor_length;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	102
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	103 size_t _last_sampled_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	104 size_t _sampled_rs_lengths;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	105
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	106 void empty_list(HeapRegion* list);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	107
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	108 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	109 YoungList(G1CollectedHeap* g1h);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	110
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	111 void push_region(HeapRegion* hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	112 void add_survivor_region(HeapRegion* hr);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	113
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	114 void empty_list();
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	115 bool is_empty() { return _length == 0; }
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	116 uint length() { return _length; }
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	117 uint survivor_length() { return _survivor_length; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	118
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	119 // Currently we do not keep track of the used byte sum for the
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	120 // young list and the survivors and it'd be quite a lot of work to
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	121 // do so. When we'll eventually replace the young list with
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	122 // instances of HeapRegionLinkedList we'll get that for free. So,
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	123 // we'll report the more accurate information then.
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	124 size_t eden_used_bytes() {
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	125 assert(length() >= survivor_length(), "invariant");
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	126 return (size_t) (length() - survivor_length()) * HeapRegion::GrainBytes;
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	127 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	128 size_t survivor_used_bytes() {
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	129 return (size_t) survivor_length() * HeapRegion::GrainBytes;
3764 053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	130 }
053d84a76d3d 7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions tonyp parents: 3377 diff changeset	131
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	132 void rs_length_sampling_init();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	133 bool rs_length_sampling_more();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	134 void rs_length_sampling_next();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	135
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	136 void reset_sampled_info() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	137 _last_sampled_rs_lengths = 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	138 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	139 size_t sampled_rs_lengths() { return _last_sampled_rs_lengths; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	140
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	141 // for development purposes
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	142 void reset_auxilary_lists();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	143 void clear() { _head = NULL; _length = 0; }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	144
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	145 void clear_survivors() {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	146 _survivor_head = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	147 _survivor_tail = NULL;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	148 _survivor_length = 0;
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	149 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	150
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	151 HeapRegion* first_region() { return _head; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	152 HeapRegion* first_survivor_region() { return _survivor_head; }
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	153 HeapRegion* last_survivor_region() { return _survivor_tail; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	154
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	155 // debugging
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	156 bool check_list_well_formed();
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	157 bool check_list_empty(bool check_sample = true);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	158 void print();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	159 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	160
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	161 class MutatorAllocRegion : public G1AllocRegion {
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	162 protected:
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	163 virtual HeapRegion* allocate_new_region(size_t word_size, bool force);
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	164 virtual void retire_region(HeapRegion* alloc_region, size_t allocated_bytes);
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	165 public:
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	166 MutatorAllocRegion()
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	167 : G1AllocRegion("Mutator Alloc Region", false /* bot_updates */) { }
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	168 };
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	169
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	170 class SurvivorGCAllocRegion : public G1AllocRegion {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	171 protected:
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	172 virtual HeapRegion* allocate_new_region(size_t word_size, bool force);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	173 virtual void retire_region(HeapRegion* alloc_region, size_t allocated_bytes);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	174 public:
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	175 SurvivorGCAllocRegion()
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	176 : G1AllocRegion("Survivor GC Alloc Region", false /* bot_updates */) { }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	177 };
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	178
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	179 class OldGCAllocRegion : public G1AllocRegion {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	180 protected:
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	181 virtual HeapRegion* allocate_new_region(size_t word_size, bool force);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	182 virtual void retire_region(HeapRegion* alloc_region, size_t allocated_bytes);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	183 public:
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	184 OldGCAllocRegion()
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	185 : G1AllocRegion("Old GC Alloc Region", true /* bot_updates */) { }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	186 };
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	187
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	188 // The G1 STW is alive closure.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	189 // An instance is embedded into the G1CH and used as the
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	190 // (optional) _is_alive_non_header closure in the STW
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	191 // reference processor. It is also extensively used during
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	192 // reference processing during STW evacuation pauses.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	193 class G1STWIsAliveClosure: public BoolObjectClosure {
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	194 G1CollectedHeap* _g1;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	195 public:
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	196 G1STWIsAliveClosure(G1CollectedHeap* g1) : _g1(g1) {}
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	197 bool do_object_b(oop p);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	198 };
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	199
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	200 class RefineCardTableEntryClosure;
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	201
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	202 class G1CollectedHeap : public SharedHeap {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	203 friend class VM_G1CollectForAllocation;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	204 friend class VM_G1CollectFull;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	205 friend class VM_G1IncCollectionPause;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	206 friend class VMStructs;
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	207 friend class MutatorAllocRegion;
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	208 friend class SurvivorGCAllocRegion;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	209 friend class OldGCAllocRegion;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	210
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	211 // Closures used in implementation.
17636 889068b9a088 8027746: Remove do_gen_barrier template parameter in G1ParCopyClosure tschatzl parents: 17634 diff changeset	212 template <G1Barrier barrier, bool do_mark_object>
5987 748051fd24ce 7130974: G1: Remove G1ParCopyHelper brutisso parents: 4912 diff changeset	213 friend class G1ParCopyClosure;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	214 friend class G1IsAliveClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	215 friend class G1EvacuateFollowersClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	216 friend class G1ParScanThreadState;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	217 friend class G1ParScanClosureSuper;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	218 friend class G1ParEvacuateFollowersClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	219 friend class G1ParTask;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	220 friend class G1FreeGarbageRegionClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	221 friend class RefineCardTableEntryClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	222 friend class G1PrepareCompactClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	223 friend class RegionSorter;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	224 friend class RegionResetter;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	225 friend class CountRCClosure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	226 friend class EvacPopObjClosure;
796 29e7d79232b9 6819065: G1: eliminate high serial card table clearing time apetrusenko parents: 678 diff changeset	227 friend class G1ParCleanupCTTask;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	228
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	229 // Other related classes.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	230 friend class G1MarkSweep;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	231
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	232 private:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	233 // The one and only G1CollectedHeap, so static functions can find it.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	234 static G1CollectedHeap* _g1h;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	235
942 2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 941 diff changeset	236 static size_t _humongous_object_threshold_in_words;
2c79770d1f6e 6819085: G1: use larger and/or user settable region size tonyp parents: 941 diff changeset	237
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	238 // Storage for the G1 heap.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	239 VirtualSpace _g1_storage;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	240 MemRegion _g1_reserved;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	241
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	242 // The part of _g1_storage that is currently committed.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	243 MemRegion _g1_committed;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	244
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	245 // The master free list. It will satisfy all new region allocations.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	246 FreeRegionList _free_list;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	247
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	248 // The secondary free list which contains regions that have been
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	249 // freed up during the cleanup process. This will be appended to the
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	250 // master free list when appropriate.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	251 FreeRegionList _secondary_free_list;
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	252
4072 8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	253 // It keeps track of the old regions.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	254 HeapRegionSet _old_set;
4072 8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	255
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	256 // It keeps track of the humongous regions.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	257 HeapRegionSet _humongous_set;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	258
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	259 // The number of regions we could create by expansion.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	260 uint _expansion_regions;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	261
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	262 // The block offset table for the G1 heap.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	263 G1BlockOffsetSharedArray* _bot_shared;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	264
4072 8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	265 // Tears down the region sets / lists so that they are empty and the
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	266 // regions on the heap do not belong to a region set / list. The
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	267 // only exception is the humongous set which we leave unaltered. If
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	268 // free_list_only is true, it will only tear down the master free
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	269 // list. It is called before a Full GC (free_list_only == false) or
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	270 // before heap shrinking (free_list_only == true).
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	271 void tear_down_region_sets(bool free_list_only);
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	272
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	273 // Rebuilds the region sets / lists so that they are repopulated to
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	274 // reflect the contents of the heap. The only exception is the
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	275 // humongous set which was not torn down in the first place. If
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	276 // free_list_only is true, it will only rebuild the master free
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	277 // list. It is called after a Full GC (free_list_only == false) or
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	278 // after heap shrinking (free_list_only == true).
8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	279 void rebuild_region_sets(bool free_list_only);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	280
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	281 // The sequence of all heap regions in the heap.
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	282 HeapRegionSeq _hrs;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	283
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	284 // Alloc region used to satisfy mutator allocation requests.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	285 MutatorAllocRegion _mutator_alloc_region;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	286
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	287 // Alloc region used to satisfy allocation requests by the GC for
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	288 // survivor objects.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	289 SurvivorGCAllocRegion _survivor_gc_alloc_region;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	290
6595 aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	291 // PLAB sizing policy for survivors.
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	292 PLABStats _survivor_plab_stats;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	293
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	294 // Alloc region used to satisfy allocation requests by the GC for
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	295 // old objects.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	296 OldGCAllocRegion _old_gc_alloc_region;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	297
6595 aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	298 // PLAB sizing policy for tenured objects.
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	299 PLABStats _old_plab_stats;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	300
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	301 PLABStats* stats_for_purpose(GCAllocPurpose purpose) {
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	302 PLABStats* stats = NULL;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	303
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	304 switch (purpose) {
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	305 case GCAllocForSurvived:
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	306 stats = &_survivor_plab_stats;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	307 break;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	308 case GCAllocForTenured:
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	309 stats = &_old_plab_stats;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	310 break;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	311 default:
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	312 assert(false, "unrecognized GCAllocPurpose");
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	313 }
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	314
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	315 return stats;
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	316 }
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	317
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	318 // The last old region we allocated to during the last GC.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	319 // Typically, it is not full so we should re-use it during the next GC.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	320 HeapRegion* _retained_old_gc_alloc_region;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	321
4781 bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	322 // It specifies whether we should attempt to expand the heap after a
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	323 // region allocation failure. If heap expansion fails we set this to
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	324 // false so that we don't re-attempt the heap expansion (it's likely
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	325 // that subsequent expansion attempts will also fail if one fails).
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	326 // Currently, it is only consulted during GC and it's reset at the
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	327 // start of each GC.
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	328 bool _expand_heap_after_alloc_failure;
bacb651cf5bf 7113006: G1: excessive ergo output when an evac failure happens tonyp parents: 4728 diff changeset	329
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	330 // It resets the mutator alloc region before new allocations can take place.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	331 void init_mutator_alloc_region();
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	332
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	333 // It releases the mutator alloc region.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	334 void release_mutator_alloc_region();
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	335
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	336 // It initializes the GC alloc regions at the start of a GC.
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	337 void init_gc_alloc_regions(EvacuationInfo& evacuation_info);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	338
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	339 // It releases the GC alloc regions at the end of a GC.
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	340 void release_gc_alloc_regions(uint no_of_gc_workers, EvacuationInfo& evacuation_info);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	341
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	342 // It does any cleanup that needs to be done on the GC alloc regions
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	343 // before a Full GC.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	344 void abandon_gc_alloc_regions();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	345
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	346 // Helper for monitoring and management support.
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	347 G1MonitoringSupport* _g1mm;
b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	348
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	349 // Determines PLAB size for a particular allocation purpose.
6595 aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	350 size_t desired_plab_sz(GCAllocPurpose purpose);
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	351
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	352 // Outside of GC pauses, the number of bytes used in all regions other
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	353 // than the current allocation region.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	354 size_t _summary_bytes_used;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	355
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	356 // This is used for a quick test on whether a reference points into
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	357 // the collection set or not. Basically, we have an array, with one
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	358 // byte per region, and that byte denotes whether the corresponding
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	359 // region is in the collection set or not. The entry corresponding
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	360 // the bottom of the heap, i.e., region 0, is pointed to by
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	361 // _in_cset_fast_test_base. The _in_cset_fast_test field has been
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	362 // biased so that it actually points to address 0 of the address
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	363 // space, to make the test as fast as possible (we can simply shift
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	364 // the address to address into it, instead of having to subtract the
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	365 // bottom of the heap from the address before shifting it; basically
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	366 // it works in the same way the card table works).
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	367 bool* _in_cset_fast_test;
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	368
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	369 // The allocated array used for the fast test on whether a reference
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	370 // points into the collection set or not. This field is also used to
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	371 // free the array.
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	372 bool* _in_cset_fast_test_base;
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	373
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	374 // The length of the _in_cset_fast_test_base array.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	375 uint _in_cset_fast_test_length;
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	376
353 9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	377 volatile unsigned _gc_time_stamp;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	378
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	379 size_t* _surviving_young_words;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	380
3778 5f6f2615433a 7049999: G1: Make the G1PrintHeapRegions output consistent and complete tonyp parents: 3777 diff changeset	381 G1HRPrinter _hr_printer;
5f6f2615433a 7049999: G1: Make the G1PrintHeapRegions output consistent and complete tonyp parents: 3777 diff changeset	382
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	383 void setup_surviving_young_words();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	384 void update_surviving_young_words(size_t* surv_young_words);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	385 void cleanup_surviving_young_words();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	386
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	387 // It decides whether an explicit GC should start a concurrent cycle
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	388 // instead of doing a STW GC. Currently, a concurrent cycle is
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	389 // explicitly started if:
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	390 // (a) cause == _gc_locker and +GCLockerInvokesConcurrent, or
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	391 // (b) cause == _java_lang_system_gc and +ExplicitGCInvokesConcurrent.
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	392 // (c) cause == _g1_humongous_allocation
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	393 bool should_do_concurrent_full_gc(GCCause::Cause cause);
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	394
6120 37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	395 // Keeps track of how many "old marking cycles" (i.e., Full GCs or
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	396 // concurrent cycles) we have started.
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	397 volatile unsigned int _old_marking_cycles_started;
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	398
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	399 // Keeps track of how many "old marking cycles" (i.e., Full GCs or
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	400 // concurrent cycles) we have completed.
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	401 volatile unsigned int _old_marking_cycles_completed;
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	402
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	403 bool _concurrent_cycle_started;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	404
3285 49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	405 // This is a non-product method that is helpful for testing. It is
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	406 // called at the end of a GC and artificially expands the heap by
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	407 // allocating a number of dead regions. This way we can induce very
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	408 // frequent marking cycles and stress the cleanup / concurrent
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	409 // cleanup code more (as all the regions that will be allocated by
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	410 // this method will be found dead by the marking cycle).
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	411 void allocate_dummy_regions() PRODUCT_RETURN;
49a67202bc67 7011855: G1: non-product flag to artificially grow the heap tonyp parents: 2435 diff changeset	412
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	413 // Clear RSets after a compaction. It also resets the GC time stamps.
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	414 void clear_rsets_post_compaction();
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	415
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	416 // If the HR printer is active, dump the state of the regions in the
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	417 // heap after a compaction.
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	418 void print_hrs_post_compaction();
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	419
6628 bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	420 double verify(bool guard, const char* msg);
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	421 void verify_before_gc();
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	422 void verify_after_gc();
bb3f6194fedb 7178363: G1: Remove the serial code for PrintGCDetails and make it a special case of the parallel code brutisso parents: 6611 diff changeset	423
6752 9646b7ff4d14 7198130: G1: PrintReferenceGC output comes out of order brutisso parents: 6725 diff changeset	424 void log_gc_header();
9646b7ff4d14 7198130: G1: PrintReferenceGC output comes out of order brutisso parents: 6725 diff changeset	425 void log_gc_footer(double pause_time_sec);
9646b7ff4d14 7198130: G1: PrintReferenceGC output comes out of order brutisso parents: 6725 diff changeset	426
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	427 // These are macros so that, if the assert fires, we get the correct
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	428 // line number, file, etc.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	429
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	430 #define heap_locking_asserts_err_msg(_extra_message_) \
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	431 err_msg("%s : Heap_lock locked: %s, at safepoint: %s, is VM thread: %s", \
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	432 (_extra_message_), \
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	433 BOOL_TO_STR(Heap_lock->owned_by_self()), \
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	434 BOOL_TO_STR(SafepointSynchronize::is_at_safepoint()), \
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	435 BOOL_TO_STR(Thread::current()->is_VM_thread()))
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	436
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	437 #define assert_heap_locked() \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	438 do { \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	439 assert(Heap_lock->owned_by_self(), \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	440 heap_locking_asserts_err_msg("should be holding the Heap_lock")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	441 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	442
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	443 #define assert_heap_locked_or_at_safepoint(_should_be_vm_thread_) \
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	444 do { \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	445 assert(Heap_lock->owned_by_self() \|\| \
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	446 (SafepointSynchronize::is_at_safepoint() && \
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	447 ((_should_be_vm_thread_) == Thread::current()->is_VM_thread())), \
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	448 heap_locking_asserts_err_msg("should be holding the Heap_lock or " \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	449 "should be at a safepoint")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	450 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	451
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	452 #define assert_heap_locked_and_not_at_safepoint() \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	453 do { \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	454 assert(Heap_lock->owned_by_self() && \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	455 !SafepointSynchronize::is_at_safepoint(), \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	456 heap_locking_asserts_err_msg("should be holding the Heap_lock and " \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	457 "should not be at a safepoint")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	458 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	459
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	460 #define assert_heap_not_locked() \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	461 do { \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	462 assert(!Heap_lock->owned_by_self(), \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	463 heap_locking_asserts_err_msg("should not be holding the Heap_lock")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	464 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	465
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	466 #define assert_heap_not_locked_and_not_at_safepoint() \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	467 do { \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	468 assert(!Heap_lock->owned_by_self() && \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	469 !SafepointSynchronize::is_at_safepoint(), \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	470 heap_locking_asserts_err_msg("should not be holding the Heap_lock and " \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	471 "should not be at a safepoint")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	472 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	473
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	474 #define assert_at_safepoint(_should_be_vm_thread_) \
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	475 do { \
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	476 assert(SafepointSynchronize::is_at_safepoint() && \
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	477 ((_should_be_vm_thread_) == Thread::current()->is_VM_thread()), \
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	478 heap_locking_asserts_err_msg("should be at a safepoint")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	479 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	480
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	481 #define assert_not_at_safepoint() \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	482 do { \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	483 assert(!SafepointSynchronize::is_at_safepoint(), \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	484 heap_locking_asserts_err_msg("should not be at a safepoint")); \
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	485 } while (0)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	486
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	487 protected:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	488
3823 14a2fd14c0db 7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark johnc parents: 3778 diff changeset	489 // The young region list.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	490 YoungList* _young_list;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	491
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	492 // The current policy object for the collector.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	493 G1CollectorPolicy* _g1_policy;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	494
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	495 // This is the second level of trying to allocate a new region. If
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	496 // new_region() didn't find a region on the free_list, this call will
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	497 // check whether there's anything available on the
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	498 // secondary_free_list and/or wait for more regions to appear on
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	499 // that list, if _free_regions_coming is set.
17773 8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	500 HeapRegion* new_region_try_secondary_free_list(bool is_old);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	501
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	502 // Try to allocate a single non-humongous HeapRegion sufficient for
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	503 // an allocation of the given word_size. If do_expand is true,
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	504 // attempt to expand the heap if necessary to satisfy the allocation
17773 8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	505 // request. If the region is to be used as an old region or for a
8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	506 // humongous object, set is_old to true. If not, to false.
8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	507 HeapRegion* new_region(size_t word_size, bool is_old, bool do_expand);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	508
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	509 // Attempt to satisfy a humongous allocation request of the given
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	510 // size by finding a contiguous set of free regions of num_regions
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	511 // length and remove them from the master free list. Return the
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	512 // index of the first region or G1_NULL_HRS_INDEX if the search
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	513 // was unsuccessful.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	514 uint humongous_obj_allocate_find_first(uint num_regions,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	515 size_t word_size);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	516
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	517 // Initialize a contiguous set of free regions of length num_regions
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	518 // and starting at index first so that they appear as a single
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	519 // humongous region.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	520 HeapWord* humongous_obj_allocate_initialize_regions(uint first,
720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	521 uint num_regions,
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	522 size_t word_size);
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	523
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	524 // Attempt to allocate a humongous object of the given size. Return
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	525 // NULL if unsuccessful.
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	526 HeapWord* humongous_obj_allocate(size_t word_size);
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	527
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	528 // The following two methods, allocate_new_tlab() and
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	529 // mem_allocate(), are the two main entry points from the runtime
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	530 // into the G1's allocation routines. They have the following
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	531 // assumptions:
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	532 //
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	533 // * They should both be called outside safepoints.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	534 //
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	535 // * They should both be called without holding the Heap_lock.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	536 //
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	537 // * All allocation requests for new TLABs should go to
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	538 // allocate_new_tlab().
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	539 //
3774 c9ca3f51cf41 6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap tonyp parents: 3772 diff changeset	540 // * All non-TLAB allocation requests should go to mem_allocate().
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	541 //
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	542 // * If either call cannot satisfy the allocation request using the
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	543 // current allocating region, they will try to get a new one. If
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	544 // this fails, they will attempt to do an evacuation pause and
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	545 // retry the allocation.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	546 //
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	547 // * If all allocation attempts fail, even after trying to schedule
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	548 // an evacuation pause, allocate_new_tlab() will return NULL,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	549 // whereas mem_allocate() will attempt a heap expansion and/or
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	550 // schedule a Full GC.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	551 //
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	552 // * We do not allow humongous-sized TLABs. So, allocate_new_tlab
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	553 // should never be called with word_size being humongous. All
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	554 // humongous allocation requests should go to mem_allocate() which
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	555 // will satisfy them with a special path.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	556
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	557 virtual HeapWord* allocate_new_tlab(size_t word_size);
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	558
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	559 virtual HeapWord* mem_allocate(size_t word_size,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	560 bool* gc_overhead_limit_was_exceeded);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	561
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	562 // The following three methods take a gc_count_before_ret
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	563 // parameter which is used to return the GC count if the method
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	564 // returns NULL. Given that we are required to read the GC count
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	565 // while holding the Heap_lock, and these paths will take the
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	566 // Heap_lock at some point, it's easier to get them to read the GC
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	567 // count while holding the Heap_lock before they return NULL instead
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	568 // of the caller (namely: mem_allocate()) having to also take the
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	569 // Heap_lock just to read the GC count.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	570
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	571 // First-level mutator allocation attempt: try to allocate out of
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	572 // the mutator alloc region without taking the Heap_lock. This
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	573 // should only be used for non-humongous allocations.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	574 inline HeapWord* attempt_allocation(size_t word_size,
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8038 diff changeset	575 unsigned int* gc_count_before_ret,
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8038 diff changeset	576 int* gclocker_retry_count_ret);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	577
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	578 // Second-level mutator allocation attempt: take the Heap_lock and
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	579 // retry the allocation attempt, potentially scheduling a GC
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	580 // pause. This should only be used for non-humongous allocations.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	581 HeapWord* attempt_allocation_slow(size_t word_size,
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8038 diff changeset	582 unsigned int* gc_count_before_ret,
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8038 diff changeset	583 int* gclocker_retry_count_ret);
2134 b158bed62ef5 6994297: G1: do first-level slow-path allocations with a CAS tonyp parents: 2133 diff changeset	584
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	585 // Takes the Heap_lock and attempts a humongous allocation. It can
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	586 // potentially schedule a GC pause.
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	587 HeapWord* attempt_allocation_humongous(size_t word_size,
8853 2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8038 diff changeset	588 unsigned int* gc_count_before_ret,
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine mgerdin parents: 8038 diff changeset	589 int* gclocker_retry_count_ret);
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	590
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	591 // Allocation attempt that should be called during safepoints (e.g.,
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	592 // at the end of a successful GC). expect_null_mutator_alloc_region
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	593 // specifies whether the mutator alloc region is expected to be NULL
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	594 // or not.
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	595 HeapWord* attempt_allocation_at_safepoint(size_t word_size,
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	596 bool expect_null_mutator_alloc_region);
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	597
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	598 // It dirties the cards that cover the block so that so that the post
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	599 // write barrier never queues anything when updating objects on this
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	600 // block. It is assumed (and in fact we assert) that the block
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	601 // belongs to a young region.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	602 inline void dirty_young_block(HeapWord* start, size_t word_size);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	603
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	604 // Allocate blocks during garbage collection. Will ensure an
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	605 // allocation region, either by picking one or expanding the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	606 // heap, and then allocate a block of the given size. The block
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	607 // may not be a humongous - it must fit into a single heap region.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	608 HeapWord* par_allocate_during_gc(GCAllocPurpose purpose, size_t word_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	609
17690 e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	610 HeapWord* allocate_during_gc_slow(GCAllocPurpose purpose,
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	611 HeapRegion* alloc_region,
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	612 bool par,
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	613 size_t word_size);
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	614
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	615 // Ensure that no further allocations can happen in "r", bearing in mind
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	616 // that parallel threads might be attempting allocations.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	617 void par_allocate_remaining_space(HeapRegion* r);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	618
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	619 // Allocation attempt during GC for a survivor object / PLAB.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	620 inline HeapWord* survivor_attempt_allocation(size_t word_size);
545 58054a18d735 6484959: G1: introduce survivor spaces apetrusenko parents: 526 diff changeset	621
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	622 // Allocation attempt during GC for an old object / PLAB.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	623 inline HeapWord* old_attempt_allocation(size_t word_size);
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	624
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	625 // These methods are the "callbacks" from the G1AllocRegion class.
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	626
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	627 // For mutator alloc regions.
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	628 HeapRegion* new_mutator_alloc_region(size_t word_size, bool force);
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	629 void retire_mutator_alloc_region(HeapRegion* alloc_region,
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	630 size_t allocated_bytes);
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	631
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	632 // For GC alloc regions.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	633 HeapRegion* new_gc_alloc_region(size_t word_size, uint count,
3830 f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	634 GCAllocPurpose ap);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	635 void retire_gc_alloc_region(HeapRegion* alloc_region,
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	636 size_t allocated_bytes, GCAllocPurpose ap);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally tonyp parents: 3823 diff changeset	637
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	638 // - if explicit_gc is true, the GC is for a System.gc() or a heap
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	639 // inspection request and should collect the entire heap
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	640 // - if clear_all_soft_refs is true, all soft references should be
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	641 // cleared during the GC
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	642 // - if explicit_gc is false, word_size describes the allocation that
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	643 // the GC should attempt (at least) to satisfy
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	644 // - it returns false if it is unable to do the collection due to the
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	645 // GC locker being active, true otherwise
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	646 bool do_collection(bool explicit_gc,
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	647 bool clear_all_soft_refs,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	648 size_t word_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	649
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	650 // Callback from VM_G1CollectFull operation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	651 // Perform a full collection.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	652 virtual void do_full_collection(bool clear_all_soft_refs);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	653
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	654 // Resize the heap if necessary after a full collection. If this is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	655 // after a collect-for allocation, "word_size" is the allocation size,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	656 // and will be considered part of the used portion of the heap.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	657 void resize_if_necessary_after_full_collection(size_t word_size);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	658
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	659 // Callback from VM_G1CollectForAllocation operation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	660 // This function does everything necessary/possible to satisfy a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	661 // failed allocation request (including collection, expansion, etc.)
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	662 HeapWord* satisfy_failed_allocation(size_t word_size, bool* succeeded);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	663
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	664 // Attempting to expand the heap sufficiently
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	665 // to support an allocation of the given "word_size". If
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	666 // successful, perform the allocation and return the address of the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	667 // allocated block, or else "NULL".
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	668 HeapWord* expand_and_allocate(size_t word_size);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	669
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	670 // Process any reference objects discovered during
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	671 // an incremental evacuation pause.
6819 2e6857353b2c 8000311: G1: ParallelGCThreads==0 broken johnc parents: 6756 diff changeset	672 void process_discovered_references(uint no_of_gc_workers);
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	673
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	674 // Enqueue any remaining discovered references
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	675 // after processing.
6819 2e6857353b2c 8000311: G1: ParallelGCThreads==0 broken johnc parents: 6756 diff changeset	676 void enqueue_discovered_references(uint no_of_gc_workers);
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	677
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	678 public:
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	679
3980 8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	680 G1MonitoringSupport* g1mm() {
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	681 assert(_g1mm != NULL, "should have been initialized");
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	682 return _g1mm;
8229bd737950 7075646: G1: fix inconsistencies in the monitoring data tonyp parents: 3979 diff changeset	683 }
3289 b52782ae3880 6946417: G1: Java VisualVM does not support G1 properly. jmasa parents: 3285 diff changeset	684
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	685 // Expand the garbage-first heap by at least the given size (in bytes!).
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2173 diff changeset	686 // Returns true if the heap was expanded by the requested amount;
c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2173 diff changeset	687 // false otherwise.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	688 // (Rounds up to a HeapRegion boundary.)
2188 c33825b68624 6923430: G1: assert(res != 0,"This should have worked.") johnc parents: 2173 diff changeset	689 bool expand(size_t expand_bytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	690
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	691 // Do anything common to GC's.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	692 virtual void gc_prologue(bool full);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	693 virtual void gc_epilogue(bool full);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	694
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	695 // We register a region with the fast "in collection set" test. We
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	696 // simply set to true the array slot corresponding to this region.
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	697 void register_region_with_in_cset_fast_test(HeapRegion* r) {
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	698 assert(_in_cset_fast_test_base != NULL, "sanity");
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	699 assert(r->in_collection_set(), "invariant");
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	700 uint index = r->hrs_index();
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	701 assert(index < _in_cset_fast_test_length, "invariant");
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	702 assert(!_in_cset_fast_test_base[index], "invariant");
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	703 _in_cset_fast_test_base[index] = true;
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	704 }
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	705
818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	706 // This is a fast test on whether a reference points into the
17688 2c2ae9e5f65d 8035326: Assume non-NULL references in G1CollectedHeap::in_cset_fast_test tschatzl parents: 17636 diff changeset	707 // collection set or not. Assume that the reference
2c2ae9e5f65d 8035326: Assume non-NULL references in G1CollectedHeap::in_cset_fast_test tschatzl parents: 17636 diff changeset	708 // points into the heap.
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	709 inline bool in_cset_fast_test(oop obj);
526 818efdefcc99 6484956: G1: improve evacuation pause efficiency tonyp parents: 519 diff changeset	710
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	711 void clear_cset_fast_test() {
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	712 assert(_in_cset_fast_test_base != NULL, "sanity");
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	713 memset(_in_cset_fast_test_base, false,
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	714 (size_t) _in_cset_fast_test_length * sizeof(bool));
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	715 }
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	716
6120 37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	717 // This is called at the start of either a concurrent cycle or a Full
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	718 // GC to update the number of old marking cycles started.
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	719 void increment_old_marking_cycles_started();
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	720
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	721 // This is called at the end of either a concurrent cycle or a Full
6120 37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	722 // GC to update the number of old marking cycles completed. Those two
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	723 // can happen in a nested fashion, i.e., we start a concurrent
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	724 // cycle, a Full GC happens half-way through it which ends first,
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	725 // and then the cycle notices that a Full GC happened and ends
2030 fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	726 // too. The concurrent parameter is a boolean to help us do a bit
fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	727 // tighter consistency checking in the method. If concurrent is
fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	728 // false, the caller is the inner caller in the nesting (i.e., the
fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	729 // Full GC). If concurrent is true, the caller is the outer caller
fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	730 // in this nesting (i.e., the concurrent cycle). Further nesting is
6120 37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	731 // not currently supported. The end of this call also notifies
2030 fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	732 // the FullGCCount_lock in case a Java thread is waiting for a full
fb712ff22571 7000559: G1: assertion failure !outer \|\| (full_collections_started == _full_collections_completed + 1) tonyp parents: 1991 diff changeset	733 // GC to happen (e.g., it called System.gc() with
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	734 // +ExplicitGCInvokesConcurrent).
6120 37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	735 void increment_old_marking_cycles_completed(bool concurrent);
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	736
6120 37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	737 unsigned int old_marking_cycles_completed() {
37552638d24a 7172388: G1: _total_full_collections should not be incremented for concurrent cycles brutisso parents: 6010 diff changeset	738 return _old_marking_cycles_completed;
1656 4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	739 }
4e5661ba9d98 6944166: G1: explicit GCs are not always handled correctly tonyp parents: 1611 diff changeset	740
13400 86e6d691f2e1 8028128: Add a type safe alternative for working with counter based data mgronlun parents: 12352 diff changeset	741 void register_concurrent_cycle_start(const Ticks& start_time);
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	742 void register_concurrent_cycle_end();
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	743 void trace_heap_after_concurrent_cycle();
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	744
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	745 G1YCType yc_type();
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	746
3778 5f6f2615433a 7049999: G1: Make the G1PrintHeapRegions output consistent and complete tonyp parents: 3777 diff changeset	747 G1HRPrinter* hr_printer() { return &_hr_printer; }
5f6f2615433a 7049999: G1: Make the G1PrintHeapRegions output consistent and complete tonyp parents: 3777 diff changeset	748
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	749 // Frees a non-humongous region by initializing its contents and
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	750 // adding it to the free list that's passed as a parameter (this is
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	751 // usually a local list which will be appended to the master free
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	752 // list later). The used bytes of freed regions are accumulated in
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	753 // pre_used. If par is true, the region's RSet will not be freed
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	754 // up. The assumption is that this will be done later.
17755 96b1c2e06e25 8027295: Free CSet takes ~50% of young pause time tschatzl parents: 17753 diff changeset	755 // The locked parameter indicates if the caller has already taken
96b1c2e06e25 8027295: Free CSet takes ~50% of young pause time tschatzl parents: 17753 diff changeset	756 // care of proper synchronization. This may allow some optimizations.
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	757 void free_region(HeapRegion* hr,
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	758 FreeRegionList* free_list,
17755 96b1c2e06e25 8027295: Free CSet takes ~50% of young pause time tschatzl parents: 17753 diff changeset	759 bool par,
96b1c2e06e25 8027295: Free CSet takes ~50% of young pause time tschatzl parents: 17753 diff changeset	760 bool locked = false);
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	761
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	762 // Frees a humongous region by collapsing it into individual regions
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	763 // and calling free_region() for each of them. The freed regions
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	764 // will be added to the free list that's passed as a parameter (this
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	765 // is usually a local list which will be appended to the master free
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	766 // list later). The used bytes of freed regions are accumulated in
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	767 // pre_used. If par is true, the region's RSet will not be freed
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	768 // up. The assumption is that this will be done later.
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	769 void free_humongous_region(HeapRegion* hr,
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	770 FreeRegionList* free_list,
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	771 bool par);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	772 protected:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	773
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	774 // Shrink the garbage-first heap by at most the given size (in bytes!).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	775 // (Rounds down to a HeapRegion boundary.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	776 virtual void shrink(size_t expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	777 void shrink_helper(size_t expand_bytes);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	778
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	779 #if TASKQUEUE_STATS
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	780 static void print_taskqueue_stats_hdr(outputStream* const st = gclog_or_tty);
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	781 void print_taskqueue_stats(outputStream* const st = gclog_or_tty) const;
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	782 void reset_taskqueue_stats();
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	783 #endif // TASKQUEUE_STATS
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	784
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	785 // Schedule the VM operation that will do an evacuation pause to
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	786 // satisfy an allocation request of word_size. *succeeded will
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	787 // return whether the VM operation was successful (it did do an
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	788 // evacuation pause) or not (another thread beat us to it or the GC
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	789 // locker was active). Given that we should not be holding the
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	790 // Heap_lock when we enter this method, we will pass the
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	791 // gc_count_before (i.e., total_collections()) as a parameter since
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	792 // it has to be read while holding the Heap_lock. Currently, both
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	793 // methods that call do_collection_pause() release the Heap_lock
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	794 // before the call, so it's easy to read gc_count_before just before.
12113 f7d3b4387a16 8022872: G1: Use correct GC cause for young GC triggered by humongous allocations brutisso parents: 12080 diff changeset	795 HeapWord* do_collection_pause(size_t word_size,
f7d3b4387a16 8022872: G1: Use correct GC cause for young GC triggered by humongous allocations brutisso parents: 12080 diff changeset	796 unsigned int gc_count_before,
f7d3b4387a16 8022872: G1: Use correct GC cause for young GC triggered by humongous allocations brutisso parents: 12080 diff changeset	797 bool* succeeded,
f7d3b4387a16 8022872: G1: Use correct GC cause for young GC triggered by humongous allocations brutisso parents: 12080 diff changeset	798 GCCause::Cause gc_cause);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	799
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	800 // The guts of the incremental collection pause, executed by the vm
1973 631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	801 // thread. It returns false if it is unable to do the collection due
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	802 // to the GC locker being active, true otherwise
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations tonyp parents: 1972 diff changeset	803 bool do_collection_pause_at_safepoint(double target_pause_time_ms);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	804
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	805 // Actually do the work of evacuating the collection set.
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	806 void evacuate_collection_set(EvacuationInfo& evacuation_info);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	807
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	808 // The g1 remembered set of the heap.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	809 G1RemSet* _g1_rem_set;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	810
616 4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	811 // A set of cards that cover the objects for which the Rsets should be updated
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	812 // concurrently after the collection.
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	813 DirtyCardQueueSet _dirty_card_queue_set;
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	814
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	815 // The closure used to refine a single card.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	816 RefineCardTableEntryClosure* _refine_cte_cl;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	817
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	818 // A function to check the consistency of dirty card logs.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	819 void check_ct_logs_at_safepoint();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	820
1705 2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	821 // A DirtyCardQueueSet that is used to hold cards that contain
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	822 // references into the current collection set. This is used to
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	823 // update the remembered sets of the regions in the collection
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	824 // set in the event of an evacuation failure.
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	825 DirtyCardQueueSet _into_cset_dirty_card_queue_set;
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	826
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	827 // After a collection pause, make the regions in the CS into free
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	828 // regions.
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	829 void free_collection_set(HeapRegion* cs_head, EvacuationInfo& evacuation_info);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	830
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	831 // Abandon the current collection set without recording policy
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	832 // statistics or updating free lists.
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	833 void abandon_collection_set(HeapRegion* cs_head);
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	834
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	835 // Applies "scan_non_heap_roots" to roots outside the heap,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	836 // "scan_rs" to roots inside the heap (having done "set_region" to
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	837 // indicate the region in which the root resides),
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	838 // and does "scan_metadata" If "scan_rs" is
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	839 // NULL, then this step is skipped. The "worker_i"
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	840 // param is for use with parallel roots processing, and should be
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	841 // the "i" of the calling parallel worker thread's work(i) function.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	842 // In the sequential case this param will be ignored.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	843 void g1_process_strong_roots(bool is_scavenging,
4910 caa4652b4414 7129892: G1: explicit marking cycle initiation might fail to initiate a marking cycle tonyp parents: 4836 diff changeset	844 ScanningOption so,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	845 OopClosure* scan_non_heap_roots,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	846 OopsInHeapRegionClosure* scan_rs,
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	847 G1KlassScanClosure* scan_klasses,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	848 int worker_i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	849
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	850 // Apply "blk" to all the weak roots of the system. These include
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	851 // JNI weak roots, the code cache, system dictionary, symbol table,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	852 // string table, and referents of reachable weak refs.
10179 a08c80e9e1e5 8012687: Remove unused is_root checks and closures stefank parents: 9076 diff changeset	853 void g1_process_weak_roots(OopClosure* root_closure);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	854
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	855 // Notifies all the necessary spaces that the committed space has
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	856 // been updated (either expanded or shrunk). It should be called
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	857 // after _g1_storage is updated.
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	858 void update_committed_space(HeapWord* old_end, HeapWord* new_end);
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	859
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	860 // The concurrent marker (and the thread it runs in.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	861 ConcurrentMark* _cm;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	862 ConcurrentMarkThread* _cmThread;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	863 bool _mark_in_progress;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	864
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	865 // The concurrent refiner.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	866 ConcurrentG1Refine* _cg1r;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	867
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	868 // The parallel task queues
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	869 RefToScanQueueSet *_task_queues;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	870
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	871 // True iff a evacuation has failed in the current collection.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	872 bool _evacuation_failed;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	873
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	874 EvacuationFailedInfo* _evacuation_failed_info_array;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	875
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	876 // Failed evacuations cause some logical from-space objects to have
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	877 // forwarding pointers to themselves. Reset them.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	878 void remove_self_forwarding_pointers();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	879
8038 ad747ee9d0b1 8002144: G1: large number of evacuation failures may lead to large c heap memory usage brutisso parents: 6819 diff changeset	880 // Together, these store an object with a preserved mark, and its mark value.
ad747ee9d0b1 8002144: G1: large number of evacuation failures may lead to large c heap memory usage brutisso parents: 6819 diff changeset	881 Stack<oop, mtGC> _objs_with_preserved_marks;
ad747ee9d0b1 8002144: G1: large number of evacuation failures may lead to large c heap memory usage brutisso parents: 6819 diff changeset	882 Stack<markOop, mtGC> _preserved_marks_of_objs;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	883
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	884 // Preserve the mark of "obj", if necessary, in preparation for its mark
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	885 // word being overwritten with a self-forwarding-pointer.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	886 void preserve_mark_if_necessary(oop obj, markOop m);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	887
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	888 // The stack of evac-failure objects left to be scanned.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	889 GrowableArray<oop>* _evac_failure_scan_stack;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	890 // The closure to apply to evac-failure objects.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	891
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	892 OopsInHeapRegionClosure* _evac_failure_closure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	893 // Set the field above.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	894 void
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	895 set_evac_failure_closure(OopsInHeapRegionClosure* evac_failure_closure) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	896 _evac_failure_closure = evac_failure_closure;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	897 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	898
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	899 // Push "obj" on the scan stack.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	900 void push_on_evac_failure_scan_stack(oop obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	901 // Process scan stack entries until the stack is empty.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	902 void drain_evac_failure_scan_stack();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	903 // True iff an invocation of "drain_scan_stack" is in progress; to
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	904 // prevent unnecessary recursion.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	905 bool _drain_in_progress;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	906
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	907 // Do any necessary initialization for evacuation-failure handling.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	908 // "cl" is the closure that will be used to process evac-failure
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	909 // objects.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	910 void init_for_evac_failure(OopsInHeapRegionClosure* cl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	911 // Do any necessary cleanup for evacuation-failure handling data
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	912 // structures.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	913 void finalize_for_evac_failure();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	914
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	915 // An attempt to evacuate "obj" has failed; take necessary steps.
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	916 oop handle_evacuation_failure_par(G1ParScanThreadState* _par_scan_state, oop obj);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	917 void handle_evacuation_failure_common(oop obj, markOop m);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	918
6629 c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	919 #ifndef PRODUCT
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	920 // Support for forcing evacuation failures. Analogous to
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	921 // PromotionFailureALot for the other collectors.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	922
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	923 // Records whether G1EvacuationFailureALot should be in effect
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	924 // for the current GC
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	925 bool _evacuation_failure_alot_for_current_gc;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	926
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	927 // Used to record the GC number for interval checking when
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	928 // determining whether G1EvaucationFailureALot is in effect
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	929 // for the current GC.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	930 size_t _evacuation_failure_alot_gc_number;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	931
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	932 // Count of the number of evacuations between failures.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	933 volatile size_t _evacuation_failure_alot_count;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	934
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	935 // Set whether G1EvacuationFailureALot should be in effect
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	936 // for the current GC (based upon the type of GC and which
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	937 // command line flags are set);
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	938 inline bool evacuation_failure_alot_for_gc_type(bool gcs_are_young,
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	939 bool during_initial_mark,
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	940 bool during_marking);
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	941
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	942 inline void set_evacuation_failure_alot_for_current_gc();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	943
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	944 // Return true if it's time to cause an evacuation failure.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	945 inline bool evacuation_should_fail();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	946
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	947 // Reset the G1EvacuationFailureALot counters. Should be called at
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	948 // the end of an evacuation pause in which an evacuation failure occurred.
6629 c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	949 inline void reset_evacuation_should_fail();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	950 #endif // !PRODUCT
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures johnc parents: 6628 diff changeset	951
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	952 // ("Weak") Reference processing support.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	953 //
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	954 // G1 has 2 instances of the reference processor class. One
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	955 // (_ref_processor_cm) handles reference object discovery
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	956 // and subsequent processing during concurrent marking cycles.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	957 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	958 // The other (_ref_processor_stw) handles reference object
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	959 // discovery and processing during full GCs and incremental
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	960 // evacuation pauses.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	961 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	962 // During an incremental pause, reference discovery will be
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	963 // temporarily disabled for _ref_processor_cm and will be
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	964 // enabled for _ref_processor_stw. At the end of the evacuation
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	965 // pause references discovered by _ref_processor_stw will be
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	966 // processed and discovery will be disabled. The previous
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	967 // setting for reference object discovery for _ref_processor_cm
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	968 // will be re-instated.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	969 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	970 // At the start of marking:
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	971 // * Discovery by the CM ref processor is verified to be inactive
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	972 // and it's discovered lists are empty.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	973 // * Discovery by the CM ref processor is then enabled.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	974 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	975 // At the end of marking:
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	976 // * Any references on the CM ref processor's discovered
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	977 // lists are processed (possibly MT).
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	978 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	979 // At the start of full GC we:
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	980 // * Disable discovery by the CM ref processor and
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	981 // empty CM ref processor's discovered lists
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	982 // (without processing any entries).
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	983 // * Verify that the STW ref processor is inactive and it's
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	984 // discovered lists are empty.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	985 // * Temporarily set STW ref processor discovery as single threaded.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	986 // * Temporarily clear the STW ref processor's _is_alive_non_header
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	987 // field.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	988 // * Finally enable discovery by the STW ref processor.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	989 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	990 // The STW ref processor is used to record any discovered
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	991 // references during the full GC.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	992 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	993 // At the end of a full GC we:
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	994 // * Enqueue any reference objects discovered by the STW ref processor
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	995 // that have non-live referents. This has the side-effect of
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	996 // making the STW ref processor inactive by disabling discovery.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	997 // * Verify that the CM ref processor is still inactive
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	998 // and no references have been placed on it's discovered
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	999 // lists (also checked as a precondition during initial marking).
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1000
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1001 // The (stw) reference processor...
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1002 ReferenceProcessor* _ref_processor_stw;
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1003
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1004 STWGCTimer* _gc_timer_stw;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1005 ConcurrentGCTimer* _gc_timer_cm;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1006
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1007 G1OldTracer* _gc_tracer_cm;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1008 G1NewTracer* _gc_tracer_stw;
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1009
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1010 // During reference object discovery, the _is_alive_non_header
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1011 // closure (if non-null) is applied to the referent object to
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1012 // determine whether the referent is live. If so then the
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1013 // reference object does not need to be 'discovered' and can
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1014 // be treated as a regular oop. This has the benefit of reducing
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1015 // the number of 'discovered' reference objects that need to
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1016 // be processed.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1017 //
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1018 // Instance of the is_alive closure for embedding into the
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1019 // STW reference processor as the _is_alive_non_header field.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1020 // Supplying a value for the _is_alive_non_header field is
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1021 // optional but doing so prevents unnecessary additions to
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1022 // the discovered lists during reference discovery.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1023 G1STWIsAliveClosure _is_alive_closure_stw;
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1024
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1025 // The (concurrent marking) reference processor...
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1026 ReferenceProcessor* _ref_processor_cm;
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1027
2037 b03260081e9b 7006113: G1: Initialize ReferenceProcessor::_is_alive_non_header field johnc parents: 2030 diff changeset	1028 // Instance of the concurrent mark is_alive closure for embedding
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1029 // into the Concurrent Marking reference processor as the
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1030 // _is_alive_non_header field. Supplying a value for the
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1031 // _is_alive_non_header field is optional but doing so prevents
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1032 // unnecessary additions to the discovered lists during reference
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1033 // discovery.
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1034 G1CMIsAliveClosure _is_alive_closure_cm;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1035
4709 fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1036 // Cache used by G1CollectedHeap::start_cset_region_for_worker().
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1037 HeapRegion** _worker_cset_start_region;
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1038
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1039 // Time stamp to validate the regions recorded in the cache
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1040 // used by G1CollectedHeap::start_cset_region_for_worker().
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1041 // The heap region entry for a given worker is valid iff
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1042 // the associated time stamp value matches the current value
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1043 // of G1CollectedHeap::_gc_time_stamp.
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1044 unsigned int* _worker_cset_start_region_time_stamp;
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1045
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1046 enum G1H_process_strong_roots_tasks {
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4783 diff changeset	1047 G1H_PS_filter_satb_buffers,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1048 G1H_PS_refProcessor_oops_do,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1049 // Leave this one last.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1050 G1H_PS_NumElements
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1051 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1052
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1053 SubTasksDone* _process_strong_tasks;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1054
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1055 volatile bool _free_regions_coming;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1056
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1057 public:
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1718 diff changeset	1058
8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1718 diff changeset	1059 SubTasksDone* process_strong_tasks() { return _process_strong_tasks; }
8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1718 diff changeset	1060
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1061 void set_refine_cte_cl_concurrency(bool concurrent);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1062
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1063 RefToScanQueue *task_queue(int i) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1064
616 4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	1065 // A set of cards where updates happened during the GC
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	1066 DirtyCardQueueSet& dirty_card_queue_set() { return _dirty_card_queue_set; }
4f360ec815ba 6720309: G1: don't synchronously update RSet during evacuation pauses iveresov parents: 545 diff changeset	1067
1705 2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1068 // A DirtyCardQueueSet that is used to hold cards that contain
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1069 // references into the current collection set. This is used to
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1070 // update the remembered sets of the regions in the collection
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1071 // set in the event of an evacuation failure.
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1072 DirtyCardQueueSet& into_cset_dirty_card_queue_set()
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1073 { return _into_cset_dirty_card_queue_set; }
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1074
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1075 // Create a G1CollectedHeap with the specified policy.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1076 // Must call the initialize method afterwards.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1077 // May not return if something goes wrong.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1078 G1CollectedHeap(G1CollectorPolicy* policy);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1079
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1080 // Initialize the G1CollectedHeap to have the initial and
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1081 // maximum sizes and remembered and barrier sets
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1082 // specified by the policy object.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1083 jint initialize();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1084
12233 40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12113 diff changeset	1085 // Return the (conservative) maximum heap alignment for any G1 heap
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12113 diff changeset	1086 static size_t conservative_max_heap_alignment();
40136aa2cdb1 8010722: assert: failed: heap size is too big for compressed oops tschatzl parents: 12113 diff changeset	1087
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1088 // Initialize weak reference processing.
2037 b03260081e9b 7006113: G1: Initialize ReferenceProcessor::_is_alive_non_header field johnc parents: 2030 diff changeset	1089 virtual void ref_processing_init();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1090
4728 441e946dc1af 7121618: Change type of number of GC workers to unsigned int. jmasa parents: 4709 diff changeset	1091 void set_par_threads(uint t) {
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1092 SharedHeap::set_par_threads(t);
4095 bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1093 // Done in SharedHeap but oddly there are
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1094 // two _process_strong_tasks's in a G1CollectedHeap
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1095 // so do it here too.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1096 _process_strong_tasks->set_n_threads(t);
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1097 }
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1098
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1099 // Set _n_par_threads according to a policy TBD.
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1100 void set_par_threads();
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1101
bca17e38de00 6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads jmasa parents: 4090 diff changeset	1102 void set_n_termination(int t) {
1833 8b10f48633dc 6984287: Regularize how GC parallel workers are specified. jmasa parents: 1718 diff changeset	1103 _process_strong_tasks->set_n_threads(t);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1104 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1105
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1106 virtual CollectedHeap::Name kind() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1107 return CollectedHeap::G1CollectedHeap;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1108 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1109
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1110 // The current policy object for the collector.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1111 G1CollectorPolicy* g1_policy() const { return _g1_policy; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1112
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1113 virtual CollectorPolicy* collector_policy() const { return (CollectorPolicy*) g1_policy(); }
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1114
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1115 // Adaptive size policy. No such thing for g1.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1116 virtual AdaptiveSizePolicy* size_policy() { return NULL; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1117
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1118 // The rem set and barrier set.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1119 G1RemSet* g1_rem_set() const { return _g1_rem_set; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1120
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1121 unsigned get_gc_time_stamp() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1122 return _gc_time_stamp;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1123 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1124
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1125 void reset_gc_time_stamp() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1126 _gc_time_stamp = 0;
353 9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	1127 OrderAccess::fence();
4709 fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1128 // Clear the cached CSet starting regions and time stamps.
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1129 // Their validity is dependent on the GC timestamp.
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1130 clear_cset_start_regions();
353 9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	1131 }
9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	1132
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1133 void check_gc_time_stamps() PRODUCT_RETURN;
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1134
353 9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	1135 void increment_gc_time_stamp() {
9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	1136 ++_gc_time_stamp;
9bb2c10ac07b 6723570: G1: assertion failure: p == current_top or oop(p)->is_oop(),"p is not a block start" (revisited!) iveresov parents: 342 diff changeset	1137 OrderAccess::fence();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1138 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1139
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1140 // Reset the given region's GC timestamp. If it's starts humongous,
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1141 // also reset the GC timestamp of its corresponding
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1142 // continues humongous regions too.
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1143 void reset_gc_time_stamps(HeapRegion* hr);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1144
1705 2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1145 void iterate_dirty_card_closure(CardTableEntryClosure* cl,
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1146 DirtyCardQueue* into_cset_dcq,
2d160770d2e5 6814437: G1: remove the _new_refs array johnc parents: 1656 diff changeset	1147 bool concurrent, int worker_i);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1148
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1149 // The shared block offset table array.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1150 G1BlockOffsetSharedArray* bot_shared() const { return _bot_shared; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1151
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1152 // Reference Processing accessors
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1153
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1154 // The STW reference processor....
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1155 ReferenceProcessor* ref_processor_stw() const { return _ref_processor_stw; }
4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1156
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1157 // The Concurrent Marking reference processor...
3979 4dfb2df418f2 6484982: G1: process references during evacuation pauses johnc parents: 3973 diff changeset	1158 ReferenceProcessor* ref_processor_cm() const { return _ref_processor_cm; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1159
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1160 ConcurrentGCTimer* gc_timer_cm() const { return _gc_timer_cm; }
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1161 G1OldTracer* gc_tracer_cm() const { return _gc_tracer_cm; }
f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1162
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1163 virtual size_t capacity() const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1164 virtual size_t used() const;
846 42d84bbbecf4 6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf") tonyp parents: 845 diff changeset	1165 // This should be called when we're not holding the heap lock. The
42d84bbbecf4 6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf") tonyp parents: 845 diff changeset	1166 // result might be a bit inaccurate.
42d84bbbecf4 6859911: G1: assert(Heap_lock->owner() = NULL, "Should be owned on this thread's behalf") tonyp parents: 845 diff changeset	1167 size_t used_unlocked() const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1168 size_t recalculate_used() const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1169
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1170 // These virtual functions do the actual allocation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1171 // Some heaps may offer a contiguous region for shared non-blocking
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1172 // allocation, via inlined code (by exporting the address of the top and
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1173 // end fields defining the extent of the contiguous allocation region.)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1174 // But G1CollectedHeap doesn't yet support this.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1175
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1176 // Return an estimate of the maximum allocation that could be performed
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1177 // without triggering any collection or expansion activity. In a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1178 // generational collector, for example, this is probably the largest
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1179 // allocation that could be supported (without expansion) in the youngest
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1180 // generation. It is "unsafe" because no locks are taken; the result
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1181 // should be treated as an approximation, not a guarantee, for use in
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1182 // heuristic resizing decisions.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1183 virtual size_t unsafe_max_alloc();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1184
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1185 virtual bool is_maximal_no_gc() const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1186 return _g1_storage.uncommitted_size() == 0;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1187 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1188
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1189 // The total number of regions in the heap.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	1190 uint n_regions() { return _hrs.length(); }
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1191
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1192 // The max number of regions in the heap.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	1193 uint max_regions() { return _hrs.max_length(); }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1194
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1195 // The number of regions that are completely free.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	1196 uint free_regions() { return _free_list.length(); }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1197
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1198 // The number of regions that are not completely free.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	1199 uint used_regions() { return n_regions() - free_regions(); }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1200
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1201 // The number of regions available for "regular" expansion.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	1202 uint expansion_regions() { return _expansion_regions; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1203
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1204 // Factory method for HeapRegion instances. It will return NULL if
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1205 // the allocation fails.
6010 720b6a76dd9d 7157073: G1: type change size_t -> uint for region counts / indexes tonyp parents: 6008 diff changeset	1206 HeapRegion* new_heap_region(uint hrs_index, HeapWord* bottom);
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1207
3317 063382f9b575 7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...) tonyp parents: 3289 diff changeset	1208 void verify_not_dirty_region(HeapRegion* hr) PRODUCT_RETURN;
063382f9b575 7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...) tonyp parents: 3289 diff changeset	1209 void verify_dirty_region(HeapRegion* hr) PRODUCT_RETURN;
2433 abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	1210 void verify_dirty_young_list(HeapRegion* head) PRODUCT_RETURN;
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	1211 void verify_dirty_young_regions() PRODUCT_RETURN;
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path tonyp parents: 2432 diff changeset	1212
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1213 // verify_region_sets() performs verification over the region
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1214 // lists. It will be compiled in the product code to be used when
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1215 // necessary (i.e., during heap verification).
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1216 void verify_region_sets();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1217
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1218 // verify_region_sets_optional() is planted in the code for
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1219 // list verification in non-product builds (and it can be enabled in
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1220 // product builds by defining HEAP_REGION_SET_FORCE_VERIFY to be 1).
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1221 #if HEAP_REGION_SET_FORCE_VERIFY
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1222 void verify_region_sets_optional() {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1223 verify_region_sets();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1224 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1225 #else // HEAP_REGION_SET_FORCE_VERIFY
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1226 void verify_region_sets_optional() { }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1227 #endif // HEAP_REGION_SET_FORCE_VERIFY
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1228
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1229 #ifdef ASSERT
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	1230 bool is_on_master_free_list(HeapRegion* hr) {
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1231 return hr->containing_set() == &_free_list;
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1232 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1233 #endif // ASSERT
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1234
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1235 // Wrapper for the region list operations that can be called from
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1236 // methods outside this class.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1237
17773 8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	1238 void secondary_free_list_add(FreeRegionList* list) {
8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	1239 _secondary_free_list.add_ordered(list);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1240 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1241
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1242 void append_secondary_free_list() {
17773 8ee855b4e667 8036025: Sort the freelist in order to shrink the heap jwilhelm parents: 17759 diff changeset	1243 _free_list.add_ordered(&_secondary_free_list);
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1244 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1245
2361 1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	1246 void append_secondary_free_list_if_not_empty_with_lock() {
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	1247 // If the secondary free list looks empty there's no reason to
1216415d8e35 7014923: G1: code cleanup tonyp parents: 2311 diff changeset	1248 // take the lock and then try to append it.
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1249 if (!_secondary_free_list.is_empty()) {
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1250 MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag);
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1251 append_secondary_free_list();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1252 }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1253 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1254
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1255 inline void old_set_remove(HeapRegion* hr);
4072 8aae2050e83e 7092309: G1: introduce old region set tonyp parents: 3988 diff changeset	1256
4829 9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	1257 size_t non_young_capacity_bytes() {
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	1258 return _old_set.total_capacity_bytes() + _humongous_set.total_capacity_bytes();
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	1259 }
9509c20bba28 6976060: G1: humongous object allocations should initiate marking cycles when necessary brutisso parents: 4787 diff changeset	1260
2152 0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1261 void set_free_regions_coming();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1262 void reset_free_regions_coming();
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1263 bool free_regions_coming() { return _free_regions_coming; }
0fa27f37d4d4 6977804: G1: remove the zero-filling thread tonyp parents: 2134 diff changeset	1264 void wait_while_free_regions_coming();
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1265
4912 a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4910 diff changeset	1266 // Determine whether the given region is one that we are using as an
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4910 diff changeset	1267 // old GC alloc region.
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4910 diff changeset	1268 bool is_old_gc_alloc_region(HeapRegion* hr) {
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4910 diff changeset	1269 return hr == _retained_old_gc_alloc_region;
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4910 diff changeset	1270 }
a9647476d1a4 7132029: G1: mixed GC phase lasts for longer than it should tonyp parents: 4910 diff changeset	1271
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1272 // Perform a collection of the heap; intended for use in implementing
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1273 // "System.gc". This probably implies as full a collection as the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1274 // "CollectedHeap" supports.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1275 virtual void collect(GCCause::Cause cause);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1276
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1277 // The same as above but assume that the caller holds the Heap_lock.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1278 void collect_locked(GCCause::Cause cause);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1279
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1280 // True iff an evacuation has failed in the most-recent collection.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1281 bool evacuation_failed() { return _evacuation_failed; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1282
17736 58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	1283 void remove_from_old_sets(const HeapRegionSetCount& old_regions_removed, const HeapRegionSetCount& humongous_regions_removed);
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	1284 void prepend_to_freelist(FreeRegionList* list);
58fc1b1523dc 8034079: G1: Refactor the HeapRegionSet hierarchy brutisso parents: 17727 diff changeset	1285 void decrement_summary_bytes(size_t bytes);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1286
4708 3c648b9ad052 7121373: Clean up CollectedHeap::is_in stefank parents: 4097 diff changeset	1287 // Returns "TRUE" iff "p" points into the committed areas of the heap.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1288 virtual bool is_in(const void* p) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1289
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1290 // Return "TRUE" iff the given object address is within the collection
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1291 // set.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1292 inline bool obj_in_cs(oop obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1293
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1294 // Return "TRUE" iff the given object address is in the reserved
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1295 // region of g1.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1296 bool is_in_g1_reserved(const void* p) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1297 return _g1_reserved.contains(p);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1298 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1299
2435 371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1300 // Returns a MemRegion that corresponds to the space that has been
371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1301 // reserved for the heap
371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1302 MemRegion g1_reserved() {
371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1303 return _g1_reserved;
371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1304 }
371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1305
371bbc844bf1 7027766: G1: introduce flag to dump the liveness information per region at the end of marking tonyp parents: 2433 diff changeset	1306 // Returns a MemRegion that corresponds to the space that has been
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1307 // committed in the heap
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1308 MemRegion g1_committed() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1309 return _g1_committed;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1310 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1311
2311 4e0069ff33df 7022200: G1: optimized build broken johnc parents: 2188 diff changeset	1312 virtual bool is_in_closed_subset(const void* p) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1313
12343 d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	1314 G1SATBCardTableModRefBS* g1_barrier_set() {
d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	1315 return (G1SATBCardTableModRefBS*) barrier_set();
d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	1316 }
d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	1317
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1318 // This resets the card table to all zeros. It is used after
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1319 // a collection pause which used the card table to claim cards.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1320 void cleanUpCardTable();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1321
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1322 // Iteration functions.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1323
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1324 // Iterate over all the ref-containing fields of all objects, calling
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1325 // "cl.do_oop" on each.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1326 virtual void oop_iterate(ExtendedOopClosure* cl);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1327
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1328 // Same as above, restricted to a memory region.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1329 void oop_iterate(MemRegion mr, ExtendedOopClosure* cl);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1330
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1331 // Iterate over all objects, calling "cl.do_object" on each.
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1332 virtual void object_iterate(ObjectClosure* cl);
da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1333
678 4ac7d97e6101 6822263: G1: JVMTI heap iteration fails iveresov parents: 677 diff changeset	1334 virtual void safe_object_iterate(ObjectClosure* cl) {
6725 da91efe96a93 6964458: Reimplement class meta-data storage to use native memory coleenp parents: 6629 diff changeset	1335 object_iterate(cl);
678 4ac7d97e6101 6822263: G1: JVMTI heap iteration fails iveresov parents: 677 diff changeset	1336 }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1337
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1338 // Iterate over all spaces in use in the heap, in ascending address order.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1339 virtual void space_iterate(SpaceClosure* cl);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1340
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1341 // Iterate over heap regions, in address order, terminating the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1342 // iteration early if the "doHeapRegion" method returns "true".
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1343 void heap_region_iterate(HeapRegionClosure* blk) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1344
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1345 // Return the region with the given index. It assumes the index is valid.
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1346 inline HeapRegion* region_at(uint index) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1347
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1348 // Divide the heap region sequence into "chunks" of some size (the number
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1349 // of regions divided by the number of parallel threads times some
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1350 // overpartition factor, currently 4). Assumes that this will be called
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1351 // in parallel by ParallelGCThreads worker threads with discinct worker
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1352 // ids in the range [0..max(ParallelGCThreads-1, 1)], that all parallel
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1353 // calls will use the same "claim_value", and that that claim value is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1354 // different from the claim_value of any heap region before the start of
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1355 // the iteration. Applies "blk->doHeapRegion" to each of the regions, by
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1356 // attempting to claim the first region in each chunk, and, if
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1357 // successful, applying the closure to each region in the chunk (and
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1358 // setting the claim value of the second and subsequent regions of the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1359 // chunk.) For now requires that "doHeapRegion" always returns "false",
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1360 // i.e., that a closure never attempt to abort a traversal.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1361 void heap_region_par_iterate_chunked(HeapRegionClosure* blk,
4728 441e946dc1af 7121618: Change type of number of GC workers to unsigned int. jmasa parents: 4709 diff changeset	1362 uint worker,
441e946dc1af 7121618: Change type of number of GC workers to unsigned int. jmasa parents: 4709 diff changeset	1363 uint no_of_par_workers,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1364 jint claim_value);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1365
390 cc68c8e9b309 6752248: G1: introduce parallel heap verification tonyp parents: 355 diff changeset	1366 // It resets all the region claim values to the default.
cc68c8e9b309 6752248: G1: introduce parallel heap verification tonyp parents: 355 diff changeset	1367 void reset_heap_region_claim_values();
cc68c8e9b309 6752248: G1: introduce parallel heap verification tonyp parents: 355 diff changeset	1368
4783 023652e49ac0 7121496: G1: do the per-region evacuation failure handling work in parallel johnc parents: 4781 diff changeset	1369 // Resets the claim values of regions in the current
023652e49ac0 7121496: G1: do the per-region evacuation failure handling work in parallel johnc parents: 4781 diff changeset	1370 // collection set to the default.
023652e49ac0 7121496: G1: do the per-region evacuation failure handling work in parallel johnc parents: 4781 diff changeset	1371 void reset_cset_heap_region_claim_values();
023652e49ac0 7121496: G1: do the per-region evacuation failure handling work in parallel johnc parents: 4781 diff changeset	1372
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 353 diff changeset	1373 #ifdef ASSERT
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 353 diff changeset	1374 bool check_heap_region_claim_values(jint claim_value);
4097 dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4095 diff changeset	1375
dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4095 diff changeset	1376 // Same as the routine above but only checks regions in the
dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4095 diff changeset	1377 // current collection set.
dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4095 diff changeset	1378 bool check_cset_heap_region_claim_values(jint claim_value);
355 0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 353 diff changeset	1379 #endif // ASSERT
0edda524b58c 6722565: G1: assert !r->is_on_unclean_list() fires tonyp parents: 353 diff changeset	1380
4709 fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1381 // Clear the cached cset start regions and (more importantly)
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1382 // the time stamps. Called when we reset the GC time stamp.
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1383 void clear_cset_start_regions();
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1384
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1385 // Given the id of a worker, obtain or calculate a suitable
fd2b426c30db 7119908: G1: Cache CSet start region for each worker for subsequent reuse johnc parents: 4708 diff changeset	1386 // starting region for iterating over the current collection set.
4097 dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4095 diff changeset	1387 HeapRegion* start_cset_region_for_worker(int worker_i);
dc467e8b2c5e 7112743: G1: Reduce overhead of marking closure during evacuation pauses johnc parents: 4095 diff changeset	1388
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1389 // This is a convenience method that is used by the
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1390 // HeapRegionIterator classes to calculate the starting region for
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1391 // each worker so that they do not all start from the same region.
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1392 HeapRegion* start_region_for_worker(uint worker_i, uint no_of_par_workers);
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1393
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1394 // Iterate over the regions (if any) in the current collection set.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1395 void collection_set_iterate(HeapRegionClosure* blk);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1396
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1397 // As above but starting from region r
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1398 void collection_set_iterate_from(HeapRegion* r, HeapRegionClosure *blk);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1399
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1400 // Returns the first (lowest address) compactible space in the heap.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1401 virtual CompactibleSpace* first_compactible_space();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1402
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1403 // A CollectedHeap will contain some number of spaces. This finds the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1404 // space containing a given address, or else returns NULL.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1405 virtual Space* space_containing(const void* addr) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1406
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1407 // A G1CollectedHeap will contain some number of heap regions. This
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1408 // finds the region containing a given address, or else returns NULL.
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1409 template <class T>
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1410 inline HeapRegion* heap_region_containing(const T addr) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1411
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1412 // Like the above, but requires "addr" to be in the heap (to avoid a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1413 // null-check), and unlike the above, may return an continuing humongous
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1414 // region.
3766 c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1415 template <class T>
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class tonyp parents: 3764 diff changeset	1416 inline HeapRegion* heap_region_containing_raw(const T addr) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1417
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1418 // A CollectedHeap is divided into a dense sequence of "blocks"; that is,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1419 // each address in the (reserved) heap is a member of exactly
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1420 // one block. The defining characteristic of a block is that it is
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1421 // possible to find its size, and thus to progress forward to the next
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1422 // block. (Blocks may be of different sizes.) Thus, blocks may
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1423 // represent Java objects, or they might be free blocks in a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1424 // free-list-based heap (or subheap), as long as the two kinds are
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1425 // distinguishable and the size of each is determinable.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1426
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1427 // Returns the address of the start of the "block" that contains the
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1428 // address "addr". We say "blocks" instead of "object" since some heaps
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1429 // may not pack objects densely; a chunk may either be an object or a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1430 // non-object.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1431 virtual HeapWord* block_start(const void* addr) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1432
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1433 // Requires "addr" to be the start of a chunk, and returns its size.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1434 // "addr + size" is required to be the start of a new chunk, or the end
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1435 // of the active area of the heap.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1436 virtual size_t block_size(const HeapWord* addr) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1437
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1438 // Requires "addr" to be the start of a block, and returns "TRUE" iff
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1439 // the block is an object.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1440 virtual bool block_is_obj(const HeapWord* addr) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1441
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1442 // Does this heap support heap inspection? (+PrintClassHistogram)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1443 virtual bool supports_heap_inspection() const { return true; }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1444
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1445 // Section on thread-local allocation buffers (TLABs)
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1446 // See CollectedHeap for semantics.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1447
17727 cfd4aac53239 8030177: G1: Enable TLAB resizing brutisso parents: 17690 diff changeset	1448 bool supports_tlab_allocation() const;
cfd4aac53239 8030177: G1: Enable TLAB resizing brutisso parents: 17690 diff changeset	1449 size_t tlab_capacity(Thread* ignored) const;
cfd4aac53239 8030177: G1: Enable TLAB resizing brutisso parents: 17690 diff changeset	1450 size_t tlab_used(Thread* ignored) const;
cfd4aac53239 8030177: G1: Enable TLAB resizing brutisso parents: 17690 diff changeset	1451 size_t max_tlab_size() const;
cfd4aac53239 8030177: G1: Enable TLAB resizing brutisso parents: 17690 diff changeset	1452 size_t unsafe_max_tlab_alloc(Thread* ignored) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1453
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1454 // Can a compiler initialize a new object without store barriers?
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1455 // This permission only extends from the creation of a new object
1027 39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1456 // via a TLAB up to the first subsequent safepoint. If such permission
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1457 // is granted for this heap type, the compiler promises to call
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1458 // defer_store_barrier() below on any slow path allocation of
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1459 // a new object for which such initializing store barriers will
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1460 // have been elided. G1, like CMS, allows this, but should be
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1461 // ready to provide a compensating write barrier as necessary
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1462 // if that storage came out of a non-young region. The efficiency
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1463 // of this implementation depends crucially on being able to
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1464 // answer very efficiently in constant time whether a piece of
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1465 // storage in the heap comes from a young region or not.
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1466 // See ReduceInitialCardMarks.
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1467 virtual bool can_elide_tlab_store_barriers() const {
3988 246daf2c601d 7005808: G1: re-enable ReduceInitialCardMarks for G1 brutisso parents: 3980 diff changeset	1468 return true;
1027 39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1469 }
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1470
1166 7b0e9cba0307 6896647: card marks can be deferred too long ysr parents: 1092 diff changeset	1471 virtual bool card_mark_must_follow_store() const {
7b0e9cba0307 6896647: card marks can be deferred too long ysr parents: 1092 diff changeset	1472 return true;
7b0e9cba0307 6896647: card marks can be deferred too long ysr parents: 1092 diff changeset	1473 }
7b0e9cba0307 6896647: card marks can be deferred too long ysr parents: 1092 diff changeset	1474
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1475 inline bool is_in_young(const oop obj);
1027 39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1476
3377 2aa9ddbb9e60 7041789: 30% perf regression with c2/arm following 7017732 jmasa parents: 3317 diff changeset	1477 #ifdef ASSERT
2aa9ddbb9e60 7041789: 30% perf regression with c2/arm following 7017732 jmasa parents: 3317 diff changeset	1478 virtual bool is_in_partial_collection(const void* p);
2aa9ddbb9e60 7041789: 30% perf regression with c2/arm following 7017732 jmasa parents: 3317 diff changeset	1479 #endif
2aa9ddbb9e60 7041789: 30% perf regression with c2/arm following 7017732 jmasa parents: 3317 diff changeset	1480
2aa9ddbb9e60 7041789: 30% perf regression with c2/arm following 7017732 jmasa parents: 3317 diff changeset	1481 virtual bool is_scavengable(const void* addr);
2aa9ddbb9e60 7041789: 30% perf regression with c2/arm following 7017732 jmasa parents: 3317 diff changeset	1482
1027 39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1483 // We don't need barriers for initializing stores to objects
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1484 // in the young gen: for the SATB pre-barrier, there is no
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1485 // pre-value that needs to be remembered; for the remembered-set
39b01ab7035a 6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning ysr parents: 942 diff changeset	1486 // update logging post-barrier, we don't maintain remembered set
3867 ff53346271fe 6814390: G1: remove the concept of non-generational G1 brutisso parents: 3830 diff changeset	1487 // information for young gen objects.
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1488 virtual inline bool can_elide_initializing_store_barrier(oop new_obj);
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1489
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1490 // Returns "true" iff the given word_size is "very large".
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1491 static bool isHumongous(size_t word_size) {
1313 664ae0c5e0e5 6755988: G1: assert(new_obj != 0 \|\| ... "should be forwarded") johnc parents: 1311 diff changeset	1492 // Note this has to be strictly greater-than as the TLABs
664ae0c5e0e5 6755988: G1: assert(new_obj != 0 \|\| ... "should be forwarded") johnc parents: 1311 diff changeset	1493 // are capped at the humongous thresold and we want to
664ae0c5e0e5 6755988: G1: assert(new_obj != 0 \|\| ... "should be forwarded") johnc parents: 1311 diff changeset	1494 // ensure that we don't try to allocate a TLAB as
664ae0c5e0e5 6755988: G1: assert(new_obj != 0 \|\| ... "should be forwarded") johnc parents: 1311 diff changeset	1495 // humongous and that we don't allocate a humongous
664ae0c5e0e5 6755988: G1: assert(new_obj != 0 \|\| ... "should be forwarded") johnc parents: 1311 diff changeset	1496 // object in a TLAB.
664ae0c5e0e5 6755988: G1: assert(new_obj != 0 \|\| ... "should be forwarded") johnc parents: 1311 diff changeset	1497 return word_size > _humongous_object_threshold_in_words;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1498 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1499
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1500 // Update mod union table with the set of dirty cards.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1501 void updateModUnion();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1502
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1503 // Set the mod union bits corresponding to the given memRegion. Note
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1504 // that this is always a safe operation, since it doesn't clear any
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1505 // bits.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1506 void markModUnionRange(MemRegion mr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1507
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1508 // Records the fact that a marking phase is no longer in progress.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1509 void set_marking_complete() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1510 _mark_in_progress = false;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1511 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1512 void set_marking_started() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1513 _mark_in_progress = true;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1514 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1515 bool mark_in_progress() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1516 return _mark_in_progress;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1517 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1518
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1519 // Print the maximum heap capacity.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1520 virtual size_t max_capacity() const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1521
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1522 virtual jlong millis_since_last_gc();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1523
3777 e8b0b0392037 7046182: G1: remove unnecessary iterations over the collection set tonyp parents: 3774 diff changeset	1524
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1525 // Convenience function to be used in situations where the heap type can be
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1526 // asserted to be this type.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1527 static G1CollectedHeap* heap();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1528
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1529 void set_region_short_lived_locked(HeapRegion* hr);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1530 // add appropriate methods for any other surv rate groups
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1531
17727 cfd4aac53239 8030177: G1: Enable TLAB resizing brutisso parents: 17690 diff changeset	1532 YoungList* young_list() const { return _young_list; }
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1533
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1534 // debugging
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1535 bool check_young_list_well_formed() {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1536 return _young_list->check_list_well_formed();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1537 }
1394 1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1538
1316cec51b4d 6819061: G1: eliminate serial Other times that are proportional to the collection set length johnc parents: 1391 diff changeset	1539 bool check_young_list_empty(bool check_heap,
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1540 bool check_sample = true);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1541
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1542 // *** Stuff related to concurrent marking. It's not clear to me that so
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1543 // many of these need to be public.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1544
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1545 // The functions below are helper functions that a subclass of
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1546 // "CollectedHeap" can use in the implementation of its virtual
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1547 // functions.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1548 // This performs a concurrent marking of the live objects in a
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1549 // bitmap off to the side.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1550 void doConcurrentMark();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1551
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1552 bool isMarkedPrev(oop obj) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1553 bool isMarkedNext(oop obj) const;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1554
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1555 // Determine if an object is dead, given the object and also
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1556 // the region to which the object belongs. An object is dead
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1557 // iff a) it was not allocated since the last mark and b) it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1558 // is not marked.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1559
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1560 bool is_obj_dead(const oop obj, const HeapRegion* hr) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1561 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1562 !hr->obj_allocated_since_prev_marking(obj) &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1563 !isMarkedPrev(obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1564 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1565
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1566 // This function returns true when an object has been
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1567 // around since the previous marking and hasn't yet
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1568 // been marked during this marking.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1569
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1570 bool is_obj_ill(const oop obj, const HeapRegion* hr) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1571 return
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1572 !hr->obj_allocated_since_next_marking(obj) &&
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1573 !isMarkedNext(obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1574 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1575
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1576 // Determine if an object is dead, given only the object itself.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1577 // This will find the region to which the object belongs and
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1578 // then call the region version of the same function.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1579
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1580 // Added if it is NULL it isn't dead.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1581
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1582 inline bool is_obj_dead(const oop obj) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1583
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1584 inline bool is_obj_ill(const oop obj) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1585
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1586 bool allocated_since_marking(oop obj, HeapRegion* hr, VerifyOption vo);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1587 HeapWord* top_at_mark_start(HeapRegion* hr, VerifyOption vo);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1588 bool is_marked(oop obj, VerifyOption vo);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1589 const char* top_at_mark_start_str(VerifyOption vo);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1590
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1591 ConcurrentMark* concurrent_mark() const { return _cm; }
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1592
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1593 // Refinement
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1594
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1595 ConcurrentG1Refine* concurrent_g1_refine() const { return _cg1r; }
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1596
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1597 // The dirty cards region list is used to record a subset of regions
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1598 // whose cards need clearing. The list if populated during the
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1599 // remembered set scanning and drained during the card table
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1600 // cleanup. Although the methods are reentrant, population/draining
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1601 // phases must not overlap. For synchronization purposes the last
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1602 // element on the list points to itself.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1603 HeapRegion* _dirty_cards_region_list;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1604 void push_dirty_cards_region(HeapRegion* hr);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1605 HeapRegion* pop_dirty_cards_region();
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1606
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1607 // Optimized nmethod scanning support routines
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1608
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1609 // Register the given nmethod with the G1 heap
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1610 virtual void register_nmethod(nmethod* nm);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1611
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1612 // Unregister the given nmethod from the G1 heap
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1613 virtual void unregister_nmethod(nmethod* nm);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1614
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1615 // Migrate the nmethods in the code root lists of the regions
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1616 // in the collection set to regions in to-space. In the event
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1617 // of an evacuation failure, nmethods that reference objects
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1618 // that were not successfullly evacuated are not migrated.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1619 void migrate_strong_code_roots();
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1620
17753 191174b49bec 8035406: Improve data structure for Code Cache remembered sets tschatzl parents: 17736 diff changeset	1621 // Free up superfluous code root memory.
191174b49bec 8035406: Improve data structure for Code Cache remembered sets tschatzl parents: 17736 diff changeset	1622 void purge_code_root_memory();
191174b49bec 8035406: Improve data structure for Code Cache remembered sets tschatzl parents: 17736 diff changeset	1623
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1624 // During an initial mark pause, mark all the code roots that
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1625 // point into regions not in the collection set.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1626 void mark_strong_code_roots(uint worker_id);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1627
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1628 // Rebuild the stong code root lists for each region
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1629 // after a full GC
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1630 void rebuild_strong_code_roots();
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1631
17634 5a32d2a3cc1e 8027476: Improve performance of Stringtable unlink tschatzl parents: 13400 diff changeset	1632 // Delete entries for dead interned string and clean up unreferenced symbols
5a32d2a3cc1e 8027476: Improve performance of Stringtable unlink tschatzl parents: 13400 diff changeset	1633 // in symbol table, possibly in parallel.
5a32d2a3cc1e 8027476: Improve performance of Stringtable unlink tschatzl parents: 13400 diff changeset	1634 void unlink_string_and_symbol_table(BoolObjectClosure* is_alive, bool unlink_strings = true, bool unlink_symbols = true);
5a32d2a3cc1e 8027476: Improve performance of Stringtable unlink tschatzl parents: 13400 diff changeset	1635
17756 a07bea31ef35 8035398: Add card redirty time in "Other" time in G1 tschatzl parents: 17755 diff changeset	1636 // Redirty logged cards in the refinement queue.
a07bea31ef35 8035398: Add card redirty time in "Other" time in G1 tschatzl parents: 17755 diff changeset	1637 void redirty_logged_cards();
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1638 // Verification
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1639
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1640 // The following is just to alert the verification code
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1641 // that a full collection has occurred and that the
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1642 // remembered sets are no longer up to date.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1643 bool _full_collection;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1644 void set_full_collection() { _full_collection = true;}
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1645 void clear_full_collection() {_full_collection = false;}
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1646 bool full_collection() {return _full_collection;}
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1647
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1648 // Perform any cleanup actions necessary before allowing a verification.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1649 virtual void prepare_for_verify();
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1650
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1651 // Perform verification.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1652
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1653 // vo == UsePrevMarking -> use "prev" marking information,
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1654 // vo == UseNextMarking -> use "next" marking information
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1655 // vo == UseMarkWord -> use the mark word in the object header
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1656 //
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1657 // NOTE: Only the "prev" marking information is guaranteed to be
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1658 // consistent most of the time, so most calls to this should use
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1659 // vo == UsePrevMarking.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1660 // Currently, there is only one case where this is called with
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1661 // vo == UseNextMarking, which is to verify the "next" marking
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1662 // information at the end of remark.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1663 // Currently there is only one place where this is called with
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1664 // vo == UseMarkWord, which is to verify the marking during a
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1665 // full GC.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1666 void verify(bool silent, VerifyOption vo);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1667
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1668 // Override; it uses the "prev" marking information
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1669 virtual void verify(bool silent);
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1670
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1671 // The methods below are here for convenience and dispatch the
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1672 // appropriate method depending on value of the given VerifyOption
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1673 // parameter. The values for that parameter, and their meanings,
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1674 // are the same as those above.
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1675
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1676 bool is_obj_dead_cond(const oop obj,
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1677 const HeapRegion* hr,
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1678 const VerifyOption vo) const;
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1679
a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1680 bool is_obj_dead_cond(const oop obj,
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1681 const VerifyOption vo) const;
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1682
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1683 // Printing
6254 a2f7274eb6ef 7114678: G1: various small fixes, code cleanup, and refactoring tonyp parents: 6197 diff changeset	1684
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1685 virtual void print_on(outputStream* st) const;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1686 virtual void print_extended_on(outputStream* st) const;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1687 virtual void print_on_error(outputStream* st) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1688
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1689 virtual void print_gc_threads_on(outputStream* st) const;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1690 virtual void gc_threads_do(ThreadClosure* tc) const;
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1691
12080 5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1692 // Override
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1693 void print_tracing_info() const;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1694
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1695 // The following two methods are helpful for debugging RSet issues.
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1696 void print_cset_rsets() PRODUCT_RETURN;
5888334c9c24 7145569: G1: optimize nmethods scanning johnc parents: 11096 diff changeset	1697 void print_all_rsets() PRODUCT_RETURN;
796 29e7d79232b9 6819065: G1: eliminate high serial card table clearing time apetrusenko parents: 678 diff changeset	1698
342 37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1699 public:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1700 void stop_conc_gc_threads();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1701
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1702 size_t pending_card_num();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1703 size_t cards_scanned();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1704
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1705 protected:
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1706 size_t _max_heap_capacity;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1707 };
37f87013dfd8 6711316: Open source the Garbage-First garbage collector ysr parents: diff changeset	1708
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1709 class G1ParGCAllocBuffer: public ParGCAllocBuffer {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1710 private:
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1711 bool _retired;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1712
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1713 public:
3886 eeae91c9baba 7080389: G1: refactor marking code in evacuation pause copy closures johnc parents: 3867 diff changeset	1714 G1ParGCAllocBuffer(size_t gclab_word_size);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1715
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4783 diff changeset	1716 void set_buf(HeapWord* buf) {
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1717 ParGCAllocBuffer::set_buf(buf);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1718 _retired = false;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1719 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1720
4787 2ace1c4ee8da 6888336: G1: avoid explicitly marking and pushing objects in survivor spaces tonyp parents: 4783 diff changeset	1721 void retire(bool end_of_gc, bool retain) {
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1722 if (_retired)
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1723 return;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1724 ParGCAllocBuffer::retire(end_of_gc, retain);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1725 _retired = true;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1726 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1727 };
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1728
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1729 class G1ParScanThreadState : public StackObj {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1730 protected:
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1731 G1CollectedHeap* _g1h;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1732 RefToScanQueue* _refs;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1733 DirtyCardQueue _dcq;
12343 d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	1734 G1SATBCardTableModRefBS* _ct_bs;
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1735 G1RemSet* _g1_rem;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1736
17690 e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1737 G1ParGCAllocBuffer _surviving_alloc_buffer;
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1738 G1ParGCAllocBuffer _tenured_alloc_buffer;
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1739 G1ParGCAllocBuffer* _alloc_buffers[GCAllocPurposeCount];
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	1740 ageTable _age_table;
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1741
17689 5d492d192cbf 8035329: Move G1ParCopyClosure::copy_to_survivor_space into G1ParScanThreadState tschatzl parents: 17688 diff changeset	1742 G1ParScanClosure _scanner;
5d492d192cbf 8035329: Move G1ParCopyClosure::copy_to_survivor_space into G1ParScanThreadState tschatzl parents: 17688 diff changeset	1743
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1744 size_t _alloc_buffer_waste;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1745 size_t _undo_waste;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1746
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1747 OopsInHeapRegionClosure* _evac_failure_cl;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1748
10405 f2110083203d 8005849: JEP 167: Event-Based JVM Tracing sla parents: 10374 diff changeset	1749 int _hash_seed;
4836 d30fa85f9994 6484965: G1: piggy-back liveness accounting phase on marking johnc parents: 4829 diff changeset	1750 uint _queue_num;
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1751
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	1752 size_t _term_attempts;
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1753
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1754 double _start;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1755 double _start_strong_roots;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1756 double _strong_roots_time;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1757 double _start_term;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1758 double _term_time;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1759
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1760 // Map from young-age-index (0 == not young, 1 is youngest) to
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1761 // surviving words. base is what we get back from the malloc call
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1762 size_t* _surviving_young_words_base;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1763 // this points into the array, as we use the first few entries for padding
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1764 size_t* _surviving_young_words;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1765
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1766 #define PADDING_ELEM_NUM (DEFAULT_CACHE_LINE_SIZE / sizeof(size_t))
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1767
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1768 void add_to_alloc_buffer_waste(size_t waste) { _alloc_buffer_waste += waste; }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1769
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1770 void add_to_undo_waste(size_t waste) { _undo_waste += waste; }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1771
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1772 DirtyCardQueue& dirty_card_queue() { return _dcq; }
12343 d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1 mgerdin parents: 12233 diff changeset	1773 G1SATBCardTableModRefBS* ctbs() { return _ct_bs; }
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1774
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1775 template <class T> inline void immediate_rs_update(HeapRegion* from, T* p, int tid);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1776
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1777 template <class T> void deferred_rs_update(HeapRegion* from, T* p, int tid) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1778 // If the new value of the field points to the same region or
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1779 // is the to-space, we don't need to include it in the Rset updates.
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1780 if (!from->is_in_reserved(oopDesc::load_decode_heap_oop(p)) && !from->is_survivor()) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1781 size_t card_index = ctbs()->index_for(p);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1782 // If the card hasn't been added to the buffer, do it.
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1783 if (ctbs()->mark_card_deferred(card_index)) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1784 dirty_card_queue().enqueue((jbyte*)ctbs()->byte_for_index(card_index));
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1785 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1786 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1787 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1788
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1789 public:
17689 5d492d192cbf 8035329: Move G1ParCopyClosure::copy_to_survivor_space into G1ParScanThreadState tschatzl parents: 17688 diff changeset	1790 G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num, ReferenceProcessor* rp);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1791
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1792 ~G1ParScanThreadState() {
6197 d2a62e0f25eb 6995781: Native Memory Tracking (Phase 1) zgu parents: 6120 diff changeset	1793 FREE_C_HEAP_ARRAY(size_t, _surviving_young_words_base, mtGC);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1794 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1795
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1796 RefToScanQueue* refs() { return _refs; }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1797 ageTable* age_table() { return &_age_table; }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1798
17690 e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1799 G1ParGCAllocBuffer* alloc_buffer(GCAllocPurpose purpose) {
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	1800 return _alloc_buffers[purpose];
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1801 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1802
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1803 size_t alloc_buffer_waste() const { return _alloc_buffer_waste; }
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1804 size_t undo_waste() const { return _undo_waste; }
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1805
1862 b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1806 #ifdef ASSERT
b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1807 bool verify_ref(narrowOop* ref) const;
b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1808 bool verify_ref(oop* ref) const;
b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1809 bool verify_task(StarTask ref) const;
b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1810 #endif // ASSERT
b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1811
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1812 template <class T> void push_on_queue(T* ref) {
1862 b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1813 assert(verify_ref(ref), "sanity");
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1814 refs()->push(ref);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1815 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1816
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1817 template <class T> inline void update_rs(HeapRegion* from, T* p, int tid);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1818
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1819 HeapWord* allocate_slow(GCAllocPurpose purpose, size_t word_sz) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1820 HeapWord* obj = NULL;
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	1821 size_t gclab_word_size = _g1h->desired_plab_sz(purpose);
79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	1822 if (word_sz * 100 < gclab_word_size * ParallelGCBufferWastePct) {
17690 e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1823 G1ParGCAllocBuffer* alloc_buf = alloc_buffer(purpose);
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1824 add_to_alloc_buffer_waste(alloc_buf->words_remaining());
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1825 alloc_buf->retire(false /* end_of_gc /, false / retain */);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1826
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	1827 HeapWord* buf = _g1h->par_allocate_during_gc(purpose, gclab_word_size);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1828 if (buf == NULL) return NULL; // Let caller handle allocation failure.
17690 e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1829 // Otherwise.
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1830 alloc_buf->set_word_size(gclab_word_size);
e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1831 alloc_buf->set_buf(buf);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1832
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1833 obj = alloc_buf->allocate(word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1834 assert(obj != NULL, "buffer was definitely big enough...");
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1835 } else {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1836 obj = _g1h->par_allocate_during_gc(purpose, word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1837 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1838 return obj;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1839 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1840
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1841 HeapWord* allocate(GCAllocPurpose purpose, size_t word_sz) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1842 HeapWord* obj = alloc_buffer(purpose)->allocate(word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1843 if (obj != NULL) return obj;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1844 return allocate_slow(purpose, word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1845 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1846
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1847 void undo_allocation(GCAllocPurpose purpose, HeapWord* obj, size_t word_sz) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1848 if (alloc_buffer(purpose)->contains(obj)) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1849 assert(alloc_buffer(purpose)->contains(obj + word_sz - 1),
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1850 "should contain whole object");
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1851 alloc_buffer(purpose)->undo_allocation(obj, word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1852 } else {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1853 CollectedHeap::fill_with_object(obj, word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1854 add_to_undo_waste(word_sz);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1855 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1856 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1857
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1858 void set_evac_failure_closure(OopsInHeapRegionClosure* evac_failure_cl) {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1859 _evac_failure_cl = evac_failure_cl;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1860 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1861 OopsInHeapRegionClosure* evac_failure_closure() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1862 return _evac_failure_cl;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1863 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1864
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1865 int* hash_seed() { return &_hash_seed; }
4836 d30fa85f9994 6484965: G1: piggy-back liveness accounting phase on marking johnc parents: 4829 diff changeset	1866 uint queue_num() { return _queue_num; }
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1867
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1868 size_t term_attempts() const { return _term_attempts; }
1611 215576b54709 6946048: G1: improvements to +PrintGCDetails output tonyp parents: 1552 diff changeset	1869 void note_term_attempt() { _term_attempts++; }
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1870
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1871 void start_strong_roots() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1872 _start_strong_roots = os::elapsedTime();
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1873 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1874 void end_strong_roots() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1875 _strong_roots_time += (os::elapsedTime() - _start_strong_roots);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1876 }
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1877 double strong_roots_time() const { return _strong_roots_time; }
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1878
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1879 void start_term_time() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1880 note_term_attempt();
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1881 _start_term = os::elapsedTime();
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1882 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1883 void end_term_time() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1884 _term_time += (os::elapsedTime() - _start_term);
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1885 }
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1886 double term_time() const { return _term_time; }
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1887
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1888 double elapsed_time() const {
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1889 return os::elapsedTime() - _start;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1890 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1891
1709 5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1892 static void
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1893 print_termination_stats_hdr(outputStream* const st = gclog_or_tty);
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1894 void
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1895 print_termination_stats(int i, outputStream* const st = gclog_or_tty) const;
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling jcoomes parents: 1705 diff changeset	1896
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1897 size_t* surviving_young_words() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1898 // We add on to hide entry 0 which accumulates surviving words for
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1899 // age -1 regions (i.e. non-young ones)
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1900 return _surviving_young_words;
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1901 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1902
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1903 void retire_alloc_buffers() {
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1904 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) {
1391 79e419e5ea3b 6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize apetrusenko parents: 1313 diff changeset	1905 size_t waste = _alloc_buffers[ap]->words_remaining();
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1906 add_to_alloc_buffer_waste(waste);
6595 aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	1907 _alloc_buffers[ap]->flush_stats_and_retire(_g1h->stats_for_purpose((GCAllocPurpose)ap),
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	1908 true /* end_of_gc */,
aaf61e68b255 6818524: G1: use ergonomic resizing of PLABs johnc parents: 6254 diff changeset	1909 false /* retain */);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1910 }
df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1911 }
17759 bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1912 private:
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1913 #define G1_PARTIAL_ARRAY_MASK 0x2
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1914
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1915 inline bool has_partial_array_mask(oop* ref) const {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1916 return ((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) == G1_PARTIAL_ARRAY_MASK;
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1917 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1918
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1919 // We never encode partial array oops as narrowOop*, so return false immediately.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1920 // This allows the compiler to create optimized code when popping references from
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1921 // the work queue.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1922 inline bool has_partial_array_mask(narrowOop* ref) const {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1923 assert(((uintptr_t)ref & G1_PARTIAL_ARRAY_MASK) != G1_PARTIAL_ARRAY_MASK, "Partial array oop reference encoded as narrowOop*");
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1924 return false;
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1925 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1926
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1927 // Only implement set_partial_array_mask() for regular oops, not for narrowOops.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1928 // We always encode partial arrays as regular oop, to allow the
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1929 // specialization for has_partial_array_mask() for narrowOops above.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1930 // This means that unintentional use of this method with narrowOops are caught
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1931 // by the compiler.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1932 inline oop* set_partial_array_mask(oop obj) const {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1933 assert(((uintptr_t)(void *)obj & G1_PARTIAL_ARRAY_MASK) == 0, "Information loss!");
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1934 return (oop) ((uintptr_t)(void )obj \| G1_PARTIAL_ARRAY_MASK);
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1935 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1936
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1937 inline oop clear_partial_array_mask(oop* ref) const {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1938 return cast_to_oop((intptr_t)ref & ~G1_PARTIAL_ARRAY_MASK);
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1939 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1940
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1941 inline void do_oop_partial_array(oop* p);
17759 bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1942
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1943 // This method is applied to the fields of the objects that have just been copied.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1944 template <class T> void do_oop_evac(T* p, HeapRegion* from) {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1945 assert(!oopDesc::is_null(oopDesc::load_decode_heap_oop(p)),
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1946 "Reference should not be NULL here as such are never pushed to the task queue.");
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1947 oop obj = oopDesc::load_decode_heap_oop_not_null(p);
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1948
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1949 // Although we never intentionally push references outside of the collection
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1950 // set, due to (benign) races in the claim mechanism during RSet scanning more
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1951 // than one thread might claim the same card. So the same card may be
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1952 // processed multiple times. So redo this check.
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1953 if (_g1h->in_cset_fast_test(obj)) {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1954 oop forwardee;
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1955 if (obj->is_forwarded()) {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1956 forwardee = obj->forwardee();
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1957 } else {
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1958 forwardee = copy_to_survivor_space(obj);
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1959 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1960 assert(forwardee != NULL, "forwardee should not be NULL");
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1961 oopDesc::encode_store_heap_oop(p, forwardee);
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1962 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1963
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1964 assert(obj != NULL, "Must be");
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1965 update_rs(from, p, queue_num());
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1966 }
bc22cbb8b45a 8035330: Remove G1ParScanPartialArrayClosure and G1ParScanHeapEvacClosure tschatzl parents: 17756 diff changeset	1967 public:
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1968
17689 5d492d192cbf 8035329: Move G1ParCopyClosure::copy_to_survivor_space into G1ParScanThreadState tschatzl parents: 17688 diff changeset	1969 oop copy_to_survivor_space(oop const obj);
5d492d192cbf 8035329: Move G1ParCopyClosure::copy_to_survivor_space into G1ParScanThreadState tschatzl parents: 17688 diff changeset	1970
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1971 template <class T> inline void deal_with_reference(T* ref_to_scan);
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1972
17833 bfdf528be8e8 8038498: Fix includes and C inlining after 8035330 tschatzl parents: 17773 diff changeset	1973 inline void deal_with_reference(StarTask ref);
1862 b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1974
17690 e5c0b296deb2 8034948: Back out JDK-6976350 since it does not fix any issue tschatzl parents: 17689 diff changeset	1975 public:
1862 b14ec34b1e07 6989448: G1: refactor and simplify G1ParScanThreadState jcoomes parents: 1836 diff changeset	1976 void trim_queue();
845 df6caf649ff7 6700789: G1: Enable use of compressed oops with G1 heaps ysr parents: 838 diff changeset	1977 };
1972 f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	1978
f95d63e2154a 6989984: Use standard include model for Hospot stefank parents: 1883 diff changeset	1979 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_HPP

Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 17833:bfdf528be8e8