Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp @ 12356:359f7e70ae7f
Reduce HotSpot diff and fix previous merge
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Fri, 11 Oct 2013 15:41:33 +0200 |
| parents | cefad50507d8 |
| children | 02f27ecb4f3a |
| rev | line source |
|---|---|
| 342 | 1 /* |
| 10405 | 2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved. |
| 342 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_HPP |
| 26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_HPP | |
| 27 | |
| 28 #include "gc_implementation/g1/concurrentMark.hpp" | |
| 10405 | 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 | 32 #include "gc_implementation/g1/g1MonitoringSupport.hpp" |
| 1972 | 33 #include "gc_implementation/g1/g1RemSet.hpp" |
| 12343 | 34 #include "gc_implementation/g1/g1SATBCardTableModRefBS.hpp" |
| 10405 | 35 #include "gc_implementation/g1/g1YCTypes.hpp" |
| 3766 | 36 #include "gc_implementation/g1/heapRegionSeq.hpp" |
| 2152 | 37 #include "gc_implementation/g1/heapRegionSets.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 | 39 #include "gc_implementation/shared/parGCAllocBuffer.hpp" |
| 1972 | 40 #include "memory/barrierSet.hpp" |
| 41 #include "memory/memRegion.hpp" | |
| 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 | 44 |
| 342 | 45 // A "G1CollectedHeap" is an implementation of a java heap for HotSpot. |
| 46 // It uses the "Garbage First" heap organization and algorithm, which | |
| 47 // may combine concurrent marking with parallel, incremental compaction of | |
| 48 // heap subsets that will yield large amounts of garbage. | |
| 49 | |
| 12080 | 50 // Forward declarations |
| 342 | 51 class HeapRegion; |
| 2173 | 52 class HRRSCleanupTask; |
| 342 | 53 class GenerationSpec; |
| 54 class OopsInHeapRegionClosure; | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
55 class G1KlassScanClosure; |
| 342 | 56 class G1ScanHeapEvacClosure; |
| 57 class ObjectClosure; | |
| 58 class SpaceClosure; | |
| 59 class CompactibleSpaceClosure; | |
| 60 class Space; | |
| 61 class G1CollectorPolicy; | |
| 62 class GenRemSet; | |
| 63 class G1RemSet; | |
| 64 class HeapRegionRemSetIterator; | |
| 65 class ConcurrentMark; | |
| 66 class ConcurrentMarkThread; | |
| 67 class ConcurrentG1Refine; | |
| 10405 | 68 class ConcurrentGCTimer; |
|
3289
b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
3285
diff
changeset
|
69 class GenerationCounters; |
| 10405 | 70 class STWGCTimer; |
| 71 class G1NewTracer; | |
| 72 class G1OldTracer; | |
| 73 class EvacuationFailedInfo; | |
| 12080 | 74 class nmethod; |
| 342 | 75 |
| 6197 | 76 typedef OverflowTaskQueue<StarTask, mtGC> RefToScanQueue; |
| 77 typedef GenericTaskQueueSet<RefToScanQueue, mtGC> RefToScanQueueSet; | |
| 342 | 78 |
|
807
d44bdab1c03d
6843694: G1: assert(index < _vs.committed_size(),"bad index"), g1BlockOffsetTable.inline.hpp:55
johnc
parents:
796
diff
changeset
|
79 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
|
80 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
|
81 |
| 342 | 82 enum GCAllocPurpose { |
| 83 GCAllocForTenured, | |
| 84 GCAllocForSurvived, | |
| 85 GCAllocPurposeCount | |
| 86 }; | |
| 87 | |
| 6197 | 88 class YoungList : public CHeapObj<mtGC> { |
| 342 | 89 private: |
| 90 G1CollectedHeap* _g1h; | |
| 91 | |
| 92 HeapRegion* _head; | |
| 93 | |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
94 HeapRegion* _survivor_head; |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
95 HeapRegion* _survivor_tail; |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
96 |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
97 HeapRegion* _curr; |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
98 |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
99 uint _length; |
|
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
100 uint _survivor_length; |
| 342 | 101 |
| 102 size_t _last_sampled_rs_lengths; | |
| 103 size_t _sampled_rs_lengths; | |
| 104 | |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
105 void empty_list(HeapRegion* list); |
| 342 | 106 |
| 107 public: | |
| 108 YoungList(G1CollectedHeap* g1h); | |
| 109 | |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
110 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
|
111 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
|
112 |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
113 void empty_list(); |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
114 bool is_empty() { return _length == 0; } |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
115 uint length() { return _length; } |
|
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
116 uint survivor_length() { return _survivor_length; } |
| 342 | 117 |
|
3764
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
3377
diff
changeset
|
118 // 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
|
119 // 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
|
120 // 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
|
121 // 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
|
122 // 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
|
123 size_t eden_used_bytes() { |
|
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
3377
diff
changeset
|
124 assert(length() >= survivor_length(), "invariant"); |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
125 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
|
126 } |
|
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
3377
diff
changeset
|
127 size_t survivor_used_bytes() { |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
128 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
|
129 } |
|
053d84a76d3d
7032531: G1: enhance GC logging to include more accurate eden / survivor size transitions
tonyp
parents:
3377
diff
changeset
|
130 |
| 342 | 131 void rs_length_sampling_init(); |
| 132 bool rs_length_sampling_more(); | |
| 133 void rs_length_sampling_next(); | |
| 134 | |
| 135 void reset_sampled_info() { | |
| 136 _last_sampled_rs_lengths = 0; | |
| 137 } | |
| 138 size_t sampled_rs_lengths() { return _last_sampled_rs_lengths; } | |
| 139 | |
| 140 // for development purposes | |
| 141 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
|
142 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
|
143 |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
144 void clear_survivors() { |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
145 _survivor_head = NULL; |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
146 _survivor_tail = NULL; |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
147 _survivor_length = 0; |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
148 } |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
149 |
| 342 | 150 HeapRegion* first_region() { return _head; } |
| 151 HeapRegion* first_survivor_region() { return _survivor_head; } | |
| 545 | 152 HeapRegion* last_survivor_region() { return _survivor_tail; } |
| 342 | 153 |
| 154 // debugging | |
| 155 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
|
156 bool check_list_empty(bool check_sample = true); |
| 342 | 157 void print(); |
| 158 }; | |
| 159 | |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
160 class MutatorAllocRegion : public G1AllocRegion { |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
161 protected: |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
162 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
|
163 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
|
164 public: |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
165 MutatorAllocRegion() |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
166 : G1AllocRegion("Mutator Alloc Region", false /* bot_updates */) { } |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
167 }; |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
168 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
169 class SurvivorGCAllocRegion : public G1AllocRegion { |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
170 protected: |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
171 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
|
172 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
|
173 public: |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
174 SurvivorGCAllocRegion() |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
175 : 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
|
176 }; |
|
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 class OldGCAllocRegion : public G1AllocRegion { |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
179 protected: |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
180 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
|
181 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
|
182 public: |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
183 OldGCAllocRegion() |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
184 : 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
|
185 }; |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
186 |
| 12080 | 187 // The G1 STW is alive closure. |
| 188 // An instance is embedded into the G1CH and used as the | |
| 189 // (optional) _is_alive_non_header closure in the STW | |
| 190 // reference processor. It is also extensively used during | |
| 191 // reference processing during STW evacuation pauses. | |
| 192 class G1STWIsAliveClosure: public BoolObjectClosure { | |
| 193 G1CollectedHeap* _g1; | |
| 194 public: | |
| 195 G1STWIsAliveClosure(G1CollectedHeap* g1) : _g1(g1) {} | |
| 196 bool do_object_b(oop p); | |
| 197 }; | |
| 198 | |
| 342 | 199 class RefineCardTableEntryClosure; |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
200 |
| 342 | 201 class G1CollectedHeap : public SharedHeap { |
| 202 friend class VM_G1CollectForAllocation; | |
| 203 friend class VM_G1CollectFull; | |
| 204 friend class VM_G1IncCollectionPause; | |
| 205 friend class VMStructs; | |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
206 friend class MutatorAllocRegion; |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
207 friend class SurvivorGCAllocRegion; |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
208 friend class OldGCAllocRegion; |
| 342 | 209 |
| 210 // Closures used in implementation. | |
| 5987 | 211 template <bool do_gen_barrier, G1Barrier barrier, bool do_mark_object> |
| 212 friend class G1ParCopyClosure; | |
| 342 | 213 friend class G1IsAliveClosure; |
| 214 friend class G1EvacuateFollowersClosure; | |
| 215 friend class G1ParScanThreadState; | |
| 216 friend class G1ParScanClosureSuper; | |
| 217 friend class G1ParEvacuateFollowersClosure; | |
| 218 friend class G1ParTask; | |
| 219 friend class G1FreeGarbageRegionClosure; | |
| 220 friend class RefineCardTableEntryClosure; | |
| 221 friend class G1PrepareCompactClosure; | |
| 222 friend class RegionSorter; | |
| 2152 | 223 friend class RegionResetter; |
| 342 | 224 friend class CountRCClosure; |
| 225 friend class EvacPopObjClosure; | |
|
796
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
678
diff
changeset
|
226 friend class G1ParCleanupCTTask; |
| 342 | 227 |
| 228 // Other related classes. | |
| 229 friend class G1MarkSweep; | |
| 230 | |
| 231 private: | |
| 232 // The one and only G1CollectedHeap, so static functions can find it. | |
| 233 static G1CollectedHeap* _g1h; | |
| 234 | |
|
942
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
941
diff
changeset
|
235 static size_t _humongous_object_threshold_in_words; |
|
2c79770d1f6e
6819085: G1: use larger and/or user settable region size
tonyp
parents:
941
diff
changeset
|
236 |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
237 // Storage for the G1 heap. |
| 342 | 238 VirtualSpace _g1_storage; |
| 239 MemRegion _g1_reserved; | |
| 240 | |
| 241 // The part of _g1_storage that is currently committed. | |
| 242 MemRegion _g1_committed; | |
| 243 | |
| 2152 | 244 // The master free list. It will satisfy all new region allocations. |
| 245 MasterFreeRegionList _free_list; | |
| 246 | |
| 247 // The secondary free list which contains regions that have been | |
| 248 // freed up during the cleanup process. This will be appended to the | |
| 249 // master free list when appropriate. | |
| 250 SecondaryFreeRegionList _secondary_free_list; | |
| 251 | |
| 4072 | 252 // It keeps track of the old regions. |
| 253 MasterOldRegionSet _old_set; | |
| 254 | |
| 2152 | 255 // It keeps track of the humongous regions. |
| 256 MasterHumongousRegionSet _humongous_set; | |
| 342 | 257 |
| 258 // 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
|
259 uint _expansion_regions; |
| 342 | 260 |
| 261 // The block offset table for the G1 heap. | |
| 262 G1BlockOffsetSharedArray* _bot_shared; | |
| 263 | |
| 4072 | 264 // Tears down the region sets / lists so that they are empty and the |
| 265 // regions on the heap do not belong to a region set / list. The | |
| 266 // only exception is the humongous set which we leave unaltered. If | |
| 267 // free_list_only is true, it will only tear down the master free | |
| 268 // list. It is called before a Full GC (free_list_only == false) or | |
| 269 // before heap shrinking (free_list_only == true). | |
| 270 void tear_down_region_sets(bool free_list_only); | |
| 271 | |
| 272 // Rebuilds the region sets / lists so that they are repopulated to | |
| 273 // reflect the contents of the heap. The only exception is the | |
| 274 // humongous set which was not torn down in the first place. If | |
| 275 // free_list_only is true, it will only rebuild the master free | |
| 276 // list. It is called after a Full GC (free_list_only == false) or | |
| 277 // after heap shrinking (free_list_only == true). | |
| 278 void rebuild_region_sets(bool free_list_only); | |
| 342 | 279 |
| 280 // The sequence of all heap regions in the heap. | |
| 3766 | 281 HeapRegionSeq _hrs; |
| 342 | 282 |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
283 // Alloc region used to satisfy mutator allocation requests. |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
284 MutatorAllocRegion _mutator_alloc_region; |
| 342 | 285 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
286 // 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
|
287 // survivor objects. |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
288 SurvivorGCAllocRegion _survivor_gc_alloc_region; |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
289 |
| 6595 | 290 // PLAB sizing policy for survivors. |
| 291 PLABStats _survivor_plab_stats; | |
| 292 | |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
293 // 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
|
294 // old objects. |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
295 OldGCAllocRegion _old_gc_alloc_region; |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
296 |
| 6595 | 297 // PLAB sizing policy for tenured objects. |
| 298 PLABStats _old_plab_stats; | |
| 299 | |
| 300 PLABStats* stats_for_purpose(GCAllocPurpose purpose) { | |
| 301 PLABStats* stats = NULL; | |
| 302 | |
| 303 switch (purpose) { | |
| 304 case GCAllocForSurvived: | |
| 305 stats = &_survivor_plab_stats; | |
| 306 break; | |
| 307 case GCAllocForTenured: | |
| 308 stats = &_old_plab_stats; | |
| 309 break; | |
| 310 default: | |
| 311 assert(false, "unrecognized GCAllocPurpose"); | |
| 312 } | |
| 313 | |
| 314 return stats; | |
| 315 } | |
| 316 | |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
317 // 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
|
318 // 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
|
319 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
|
320 |
|
4781
bacb651cf5bf
7113006: G1: excessive ergo output when an evac failure happens
tonyp
parents:
4728
diff
changeset
|
321 // 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
|
322 // 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
|
323 // 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
|
324 // 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
|
325 // 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
|
326 // start of each GC. |
|
bacb651cf5bf
7113006: G1: excessive ergo output when an evac failure happens
tonyp
parents:
4728
diff
changeset
|
327 bool _expand_heap_after_alloc_failure; |
|
bacb651cf5bf
7113006: G1: excessive ergo output when an evac failure happens
tonyp
parents:
4728
diff
changeset
|
328 |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
329 // 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
|
330 void init_mutator_alloc_region(); |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
331 |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
332 // It releases the mutator alloc region. |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
333 void release_mutator_alloc_region(); |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
334 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
335 // It initializes the GC alloc regions at the start of a GC. |
| 10405 | 336 void init_gc_alloc_regions(EvacuationInfo& evacuation_info); |
| 342 | 337 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
338 // It releases the GC alloc regions at the end of a GC. |
| 10405 | 339 void release_gc_alloc_regions(uint no_of_gc_workers, EvacuationInfo& evacuation_info); |
| 342 | 340 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
341 // 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
|
342 // before a Full GC. |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
343 void abandon_gc_alloc_regions(); |
| 342 | 344 |
|
3289
b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
3285
diff
changeset
|
345 // Helper for monitoring and management support. |
|
b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
3285
diff
changeset
|
346 G1MonitoringSupport* _g1mm; |
|
b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
3285
diff
changeset
|
347 |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
348 // Determines PLAB size for a particular allocation purpose. |
| 6595 | 349 size_t desired_plab_sz(GCAllocPurpose purpose); |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
350 |
| 342 | 351 // Outside of GC pauses, the number of bytes used in all regions other |
| 352 // than the current allocation region. | |
| 353 size_t _summary_bytes_used; | |
| 354 | |
| 526 | 355 // This is used for a quick test on whether a reference points into |
| 356 // the collection set or not. Basically, we have an array, with one | |
| 357 // byte per region, and that byte denotes whether the corresponding | |
| 358 // region is in the collection set or not. The entry corresponding | |
| 359 // the bottom of the heap, i.e., region 0, is pointed to by | |
| 360 // _in_cset_fast_test_base. The _in_cset_fast_test field has been | |
| 361 // biased so that it actually points to address 0 of the address | |
| 362 // space, to make the test as fast as possible (we can simply shift | |
| 363 // the address to address into it, instead of having to subtract the | |
| 364 // bottom of the heap from the address before shifting it; basically | |
| 365 // it works in the same way the card table works). | |
| 366 bool* _in_cset_fast_test; | |
| 367 | |
| 368 // The allocated array used for the fast test on whether a reference | |
| 369 // points into the collection set or not. This field is also used to | |
| 370 // free the array. | |
| 371 bool* _in_cset_fast_test_base; | |
| 372 | |
| 373 // 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
|
374 uint _in_cset_fast_test_length; |
| 526 | 375 |
|
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
|
376 volatile unsigned _gc_time_stamp; |
| 342 | 377 |
| 378 size_t* _surviving_young_words; | |
| 379 | |
|
3778
5f6f2615433a
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
3777
diff
changeset
|
380 G1HRPrinter _hr_printer; |
|
5f6f2615433a
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
3777
diff
changeset
|
381 |
| 342 | 382 void setup_surviving_young_words(); |
| 383 void update_surviving_young_words(size_t* surv_young_words); | |
| 384 void cleanup_surviving_young_words(); | |
| 385 | |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
386 // 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
|
387 // 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
|
388 // explicitly started if: |
|
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
389 // (a) cause == _gc_locker and +GCLockerInvokesConcurrent, or |
|
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
390 // (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
|
391 // (c) cause == _g1_humongous_allocation |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
392 bool should_do_concurrent_full_gc(GCCause::Cause cause); |
|
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
393 |
|
6120
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
394 // 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
|
395 // concurrent cycles) we have started. |
|
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
396 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
|
397 |
|
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
398 // 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
|
399 // concurrent cycles) we have completed. |
|
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
400 volatile unsigned int _old_marking_cycles_completed; |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
401 |
| 10405 | 402 bool _concurrent_cycle_started; |
| 403 | |
|
3285
49a67202bc67
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
2435
diff
changeset
|
404 // 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
|
405 // 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
|
406 // 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
|
407 // frequent marking cycles and stress the cleanup / concurrent |
|
49a67202bc67
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
2435
diff
changeset
|
408 // 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
|
409 // 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
|
410 void allocate_dummy_regions() PRODUCT_RETURN; |
|
49a67202bc67
7011855: G1: non-product flag to artificially grow the heap
tonyp
parents:
2435
diff
changeset
|
411 |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
412 // 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
|
413 void clear_rsets_post_compaction(); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
414 |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
415 // 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
|
416 // heap after a compaction. |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
417 void print_hrs_post_compaction(); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
418 |
|
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
|
419 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
|
420 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
|
421 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
|
422 |
|
6752
9646b7ff4d14
7198130: G1: PrintReferenceGC output comes out of order
brutisso
parents:
6725
diff
changeset
|
423 void log_gc_header(); |
|
9646b7ff4d14
7198130: G1: PrintReferenceGC output comes out of order
brutisso
parents:
6725
diff
changeset
|
424 void log_gc_footer(double pause_time_sec); |
|
9646b7ff4d14
7198130: G1: PrintReferenceGC output comes out of order
brutisso
parents:
6725
diff
changeset
|
425 |
| 1973 | 426 // These are macros so that, if the assert fires, we get the correct |
| 427 // line number, file, etc. | |
| 428 | |
| 2361 | 429 #define heap_locking_asserts_err_msg(_extra_message_) \ |
| 2152 | 430 err_msg("%s : Heap_lock locked: %s, at safepoint: %s, is VM thread: %s", \ |
| 2361 | 431 (_extra_message_), \ |
| 2152 | 432 BOOL_TO_STR(Heap_lock->owned_by_self()), \ |
| 433 BOOL_TO_STR(SafepointSynchronize::is_at_safepoint()), \ | |
| 434 BOOL_TO_STR(Thread::current()->is_VM_thread())) | |
| 1973 | 435 |
| 436 #define assert_heap_locked() \ | |
| 437 do { \ | |
| 438 assert(Heap_lock->owned_by_self(), \ | |
| 439 heap_locking_asserts_err_msg("should be holding the Heap_lock")); \ | |
| 440 } while (0) | |
| 441 | |
| 2361 | 442 #define assert_heap_locked_or_at_safepoint(_should_be_vm_thread_) \ |
| 1973 | 443 do { \ |
| 444 assert(Heap_lock->owned_by_self() || \ | |
| 2152 | 445 (SafepointSynchronize::is_at_safepoint() && \ |
| 2361 | 446 ((_should_be_vm_thread_) == Thread::current()->is_VM_thread())), \ |
| 1973 | 447 heap_locking_asserts_err_msg("should be holding the Heap_lock or " \ |
| 448 "should be at a safepoint")); \ | |
| 449 } while (0) | |
| 450 | |
| 451 #define assert_heap_locked_and_not_at_safepoint() \ | |
| 452 do { \ | |
| 453 assert(Heap_lock->owned_by_self() && \ | |
| 454 !SafepointSynchronize::is_at_safepoint(), \ | |
| 455 heap_locking_asserts_err_msg("should be holding the Heap_lock and " \ | |
| 456 "should not be at a safepoint")); \ | |
| 457 } while (0) | |
| 458 | |
| 459 #define assert_heap_not_locked() \ | |
| 460 do { \ | |
| 461 assert(!Heap_lock->owned_by_self(), \ | |
| 462 heap_locking_asserts_err_msg("should not be holding the Heap_lock")); \ | |
| 463 } while (0) | |
| 464 | |
| 465 #define assert_heap_not_locked_and_not_at_safepoint() \ | |
| 466 do { \ | |
| 467 assert(!Heap_lock->owned_by_self() && \ | |
| 468 !SafepointSynchronize::is_at_safepoint(), \ | |
| 469 heap_locking_asserts_err_msg("should not be holding the Heap_lock and " \ | |
| 470 "should not be at a safepoint")); \ | |
| 471 } while (0) | |
| 472 | |
| 2361 | 473 #define assert_at_safepoint(_should_be_vm_thread_) \ |
| 1973 | 474 do { \ |
| 2152 | 475 assert(SafepointSynchronize::is_at_safepoint() && \ |
| 2361 | 476 ((_should_be_vm_thread_) == Thread::current()->is_VM_thread()), \ |
| 1973 | 477 heap_locking_asserts_err_msg("should be at a safepoint")); \ |
| 478 } while (0) | |
| 479 | |
| 480 #define assert_not_at_safepoint() \ | |
| 481 do { \ | |
| 482 assert(!SafepointSynchronize::is_at_safepoint(), \ | |
| 483 heap_locking_asserts_err_msg("should not be at a safepoint")); \ | |
| 484 } while (0) | |
| 485 | |
| 342 | 486 protected: |
| 487 | |
|
3823
14a2fd14c0db
7068240: G1: Long "parallel other time" and "ext root scanning" when running specific benchmark
johnc
parents:
3778
diff
changeset
|
488 // The young region list. |
| 342 | 489 YoungList* _young_list; |
| 490 | |
| 491 // The current policy object for the collector. | |
| 492 G1CollectorPolicy* _g1_policy; | |
| 493 | |
| 2152 | 494 // 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
|
495 // 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
|
496 // check whether there's anything available on the |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
497 // 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
|
498 // that list, if _free_regions_coming is set. |
| 2361 | 499 HeapRegion* new_region_try_secondary_free_list(); |
| 342 | 500 |
| 2361 | 501 // Try to allocate a single non-humongous HeapRegion sufficient for |
| 502 // an allocation of the given word_size. If do_expand is true, | |
| 503 // attempt to expand the heap if necessary to satisfy the allocation | |
| 504 // request. | |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
505 HeapRegion* new_region(size_t word_size, bool do_expand); |
| 342 | 506 |
| 2361 | 507 // Attempt to satisfy a humongous allocation request of the given |
| 508 // size by finding a contiguous set of free regions of num_regions | |
| 509 // length and remove them from the master free list. Return the | |
| 3766 | 510 // index of the first region or G1_NULL_HRS_INDEX if the search |
| 511 // was unsuccessful. | |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
512 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
|
513 size_t word_size); |
| 342 | 514 |
| 2361 | 515 // Initialize a contiguous set of free regions of length num_regions |
| 516 // and starting at index first so that they appear as a single | |
| 517 // humongous region. | |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
518 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
|
519 uint num_regions, |
| 2361 | 520 size_t word_size); |
| 521 | |
| 522 // Attempt to allocate a humongous object of the given size. Return | |
| 523 // NULL if unsuccessful. | |
| 2152 | 524 HeapWord* humongous_obj_allocate(size_t word_size); |
| 1973 | 525 |
| 526 // The following two methods, allocate_new_tlab() and | |
| 527 // mem_allocate(), are the two main entry points from the runtime | |
| 528 // into the G1's allocation routines. They have the following | |
| 529 // assumptions: | |
| 530 // | |
| 531 // * They should both be called outside safepoints. | |
| 532 // | |
| 533 // * They should both be called without holding the Heap_lock. | |
| 534 // | |
| 535 // * All allocation requests for new TLABs should go to | |
| 536 // allocate_new_tlab(). | |
| 537 // | |
|
3774
c9ca3f51cf41
6994322: Remove the is_tlab and is_noref / is_large_noref parameters from the CollectedHeap
tonyp
parents:
3772
diff
changeset
|
538 // * All non-TLAB allocation requests should go to mem_allocate(). |
| 1973 | 539 // |
| 540 // * If either call cannot satisfy the allocation request using the | |
| 541 // current allocating region, they will try to get a new one. If | |
| 542 // this fails, they will attempt to do an evacuation pause and | |
| 543 // retry the allocation. | |
| 544 // | |
| 545 // * If all allocation attempts fail, even after trying to schedule | |
| 546 // an evacuation pause, allocate_new_tlab() will return NULL, | |
| 547 // whereas mem_allocate() will attempt a heap expansion and/or | |
| 548 // schedule a Full GC. | |
| 549 // | |
| 550 // * We do not allow humongous-sized TLABs. So, allocate_new_tlab | |
| 551 // should never be called with word_size being humongous. All | |
| 552 // humongous allocation requests should go to mem_allocate() which | |
| 553 // will satisfy them with a special path. | |
| 554 | |
| 555 virtual HeapWord* allocate_new_tlab(size_t word_size); | |
| 556 | |
| 557 virtual HeapWord* mem_allocate(size_t word_size, | |
| 558 bool* gc_overhead_limit_was_exceeded); | |
| 342 | 559 |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
560 // 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
|
561 // 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
|
562 // 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
|
563 // 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
|
564 // 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
|
565 // 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
|
566 // 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
|
567 // Heap_lock just to read the GC count. |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
568 |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
569 // 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
|
570 // 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
|
571 // should only be used for non-humongous allocations. |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
572 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
|
573 unsigned int* gc_count_before_ret, |
|
2e093b564241
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
8038
diff
changeset
|
574 int* gclocker_retry_count_ret); |
| 342 | 575 |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
576 // 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
|
577 // retry the allocation attempt, potentially scheduling a GC |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
578 // 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
|
579 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
|
580 unsigned int* gc_count_before_ret, |
|
2e093b564241
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
8038
diff
changeset
|
581 int* gclocker_retry_count_ret); |
|
2134
b158bed62ef5
6994297: G1: do first-level slow-path allocations with a CAS
tonyp
parents:
2133
diff
changeset
|
582 |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
583 // 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
|
584 // potentially schedule a GC pause. |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
585 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
|
586 unsigned int* gc_count_before_ret, |
|
2e093b564241
7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents:
8038
diff
changeset
|
587 int* gclocker_retry_count_ret); |
| 1973 | 588 |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
589 // 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
|
590 // 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
|
591 // 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
|
592 // or not. |
| 1973 | 593 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
|
594 bool expect_null_mutator_alloc_region); |
| 1973 | 595 |
| 596 // It dirties the cards that cover the block so that so that the post | |
| 597 // write barrier never queues anything when updating objects on this | |
| 598 // block. It is assumed (and in fact we assert) that the block | |
| 599 // belongs to a young region. | |
| 600 inline void dirty_young_block(HeapWord* start, size_t word_size); | |
| 342 | 601 |
| 602 // Allocate blocks during garbage collection. Will ensure an | |
| 603 // allocation region, either by picking one or expanding the | |
| 604 // heap, and then allocate a block of the given size. The block | |
| 605 // may not be a humongous - it must fit into a single heap region. | |
| 606 HeapWord* par_allocate_during_gc(GCAllocPurpose purpose, size_t word_size); | |
| 607 | |
| 608 // Ensure that no further allocations can happen in "r", bearing in mind | |
| 609 // that parallel threads might be attempting allocations. | |
| 610 void par_allocate_remaining_space(HeapRegion* r); | |
| 611 | |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
612 // 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
|
613 inline HeapWord* survivor_attempt_allocation(size_t word_size); |
| 545 | 614 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
615 // 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
|
616 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
|
617 |
|
3830
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
618 // 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
|
619 |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
620 // For mutator alloc regions. |
|
2433
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
621 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
|
622 void retire_mutator_alloc_region(HeapRegion* alloc_region, |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
623 size_t allocated_bytes); |
|
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 // For GC alloc regions. |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
626 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
|
627 GCAllocPurpose ap); |
|
f44782f04dd4
7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents:
3823
diff
changeset
|
628 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
|
629 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
|
630 |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
631 // - if explicit_gc is true, the GC is for a System.gc() or a heap |
| 1973 | 632 // inspection request and should collect the entire heap |
| 633 // - if clear_all_soft_refs is true, all soft references should be | |
| 634 // cleared during the GC | |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
635 // - if explicit_gc is false, word_size describes the allocation that |
| 1973 | 636 // the GC should attempt (at least) to satisfy |
| 637 // - it returns false if it is unable to do the collection due to the | |
| 638 // GC locker being active, true otherwise | |
| 639 bool do_collection(bool explicit_gc, | |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
640 bool clear_all_soft_refs, |
| 342 | 641 size_t word_size); |
| 642 | |
| 643 // Callback from VM_G1CollectFull operation. | |
| 644 // Perform a full collection. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
645 virtual void do_full_collection(bool clear_all_soft_refs); |
| 342 | 646 |
| 647 // Resize the heap if necessary after a full collection. If this is | |
| 648 // after a collect-for allocation, "word_size" is the allocation size, | |
| 649 // and will be considered part of the used portion of the heap. | |
| 650 void resize_if_necessary_after_full_collection(size_t word_size); | |
| 651 | |
| 652 // Callback from VM_G1CollectForAllocation operation. | |
| 653 // This function does everything necessary/possible to satisfy a | |
| 654 // failed allocation request (including collection, expansion, etc.) | |
| 1973 | 655 HeapWord* satisfy_failed_allocation(size_t word_size, bool* succeeded); |
| 342 | 656 |
| 657 // Attempting to expand the heap sufficiently | |
| 658 // to support an allocation of the given "word_size". If | |
| 659 // successful, perform the allocation and return the address of the | |
| 660 // allocated block, or else "NULL". | |
| 1973 | 661 HeapWord* expand_and_allocate(size_t word_size); |
| 342 | 662 |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
663 // Process any reference objects discovered during |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
664 // an incremental evacuation pause. |
| 6819 | 665 void process_discovered_references(uint no_of_gc_workers); |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
666 |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
667 // Enqueue any remaining discovered references |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
668 // after processing. |
| 6819 | 669 void enqueue_discovered_references(uint no_of_gc_workers); |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
670 |
| 342 | 671 public: |
|
3289
b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
3285
diff
changeset
|
672 |
|
3980
8229bd737950
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
3979
diff
changeset
|
673 G1MonitoringSupport* g1mm() { |
|
8229bd737950
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
3979
diff
changeset
|
674 assert(_g1mm != NULL, "should have been initialized"); |
|
8229bd737950
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
3979
diff
changeset
|
675 return _g1mm; |
|
8229bd737950
7075646: G1: fix inconsistencies in the monitoring data
tonyp
parents:
3979
diff
changeset
|
676 } |
|
3289
b52782ae3880
6946417: G1: Java VisualVM does not support G1 properly.
jmasa
parents:
3285
diff
changeset
|
677 |
| 342 | 678 // 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
|
679 // 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
|
680 // false otherwise. |
| 342 | 681 // (Rounds up to a HeapRegion boundary.) |
|
2188
c33825b68624
6923430: G1: assert(res != 0,"This should have worked.")
johnc
parents:
2173
diff
changeset
|
682 bool expand(size_t expand_bytes); |
| 342 | 683 |
| 684 // Do anything common to GC's. | |
| 685 virtual void gc_prologue(bool full); | |
| 686 virtual void gc_epilogue(bool full); | |
| 687 | |
|
8505
dee7c8b578c7
-Integration of WB Serial Snippets-Integration of G1 WB Snippets (partially working)-Fix allocation bug with -XX:-UseTLAB and -XX:+UseSerialGC
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8504
diff
changeset
|
688 #ifdef GRAAL |
|
dee7c8b578c7
-Integration of WB Serial Snippets-Integration of G1 WB Snippets (partially working)-Fix allocation bug with -XX:-UseTLAB and -XX:+UseSerialGC
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8504
diff
changeset
|
689 HeapWord** top_addr() const; |
|
dee7c8b578c7
-Integration of WB Serial Snippets-Integration of G1 WB Snippets (partially working)-Fix allocation bug with -XX:-UseTLAB and -XX:+UseSerialGC
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8504
diff
changeset
|
690 HeapWord** end_addr() const; |
|
dee7c8b578c7
-Integration of WB Serial Snippets-Integration of G1 WB Snippets (partially working)-Fix allocation bug with -XX:-UseTLAB and -XX:+UseSerialGC
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8504
diff
changeset
|
691 #endif |
|
dee7c8b578c7
-Integration of WB Serial Snippets-Integration of G1 WB Snippets (partially working)-Fix allocation bug with -XX:-UseTLAB and -XX:+UseSerialGC
Christos Kotselidis <christos.kotselidis@oracle.com>
parents:
8504
diff
changeset
|
692 |
| 526 | 693 // We register a region with the fast "in collection set" test. We |
| 694 // simply set to true the array slot corresponding to this region. | |
| 695 void register_region_with_in_cset_fast_test(HeapRegion* r) { | |
| 696 assert(_in_cset_fast_test_base != NULL, "sanity"); | |
| 697 assert(r->in_collection_set(), "invariant"); | |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
698 uint index = r->hrs_index(); |
| 3766 | 699 assert(index < _in_cset_fast_test_length, "invariant"); |
| 526 | 700 assert(!_in_cset_fast_test_base[index], "invariant"); |
| 701 _in_cset_fast_test_base[index] = true; | |
| 702 } | |
| 703 | |
| 704 // This is a fast test on whether a reference points into the | |
| 705 // collection set or not. It does not assume that the reference | |
| 706 // points into the heap; if it doesn't, it will return false. | |
| 707 bool in_cset_fast_test(oop obj) { | |
| 708 assert(_in_cset_fast_test != NULL, "sanity"); | |
| 709 if (_g1_committed.contains((HeapWord*) obj)) { | |
| 710 // no need to subtract the bottom of the heap from obj, | |
| 711 // _in_cset_fast_test is biased | |
|
12316
190899198332
7195622: CheckUnhandledOops has limited usefulness now
hseigel
parents:
12233
diff
changeset
|
712 uintx index = cast_from_oop<uintx>(obj) >> HeapRegion::LogOfHRGrainBytes; |
| 526 | 713 bool ret = _in_cset_fast_test[index]; |
| 714 // let's make sure the result is consistent with what the slower | |
| 715 // test returns | |
| 716 assert( ret || !obj_in_cs(obj), "sanity"); | |
| 717 assert(!ret || obj_in_cs(obj), "sanity"); | |
| 718 return ret; | |
| 719 } else { | |
| 720 return false; | |
| 721 } | |
| 722 } | |
| 723 | |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
724 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
|
725 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
|
726 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
|
727 (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
|
728 } |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
729 |
|
6120
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
730 // 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
|
731 // 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
|
732 void increment_old_marking_cycles_started(); |
|
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
733 |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
734 // 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
|
735 // 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
|
736 // 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
|
737 // 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
|
738 // 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
|
739 // 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
|
740 // 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
|
741 // 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
|
742 // 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
|
743 // 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
|
744 // 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
|
745 // 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
|
746 // 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
|
747 // +ExplicitGCInvokesConcurrent). |
|
6120
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
748 void increment_old_marking_cycles_completed(bool concurrent); |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
749 |
|
6120
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
750 unsigned int old_marking_cycles_completed() { |
|
37552638d24a
7172388: G1: _total_full_collections should not be incremented for concurrent cycles
brutisso
parents:
6010
diff
changeset
|
751 return _old_marking_cycles_completed; |
|
1656
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
752 } |
|
4e5661ba9d98
6944166: G1: explicit GCs are not always handled correctly
tonyp
parents:
1611
diff
changeset
|
753 |
| 10405 | 754 void register_concurrent_cycle_start(jlong start_time); |
| 755 void register_concurrent_cycle_end(); | |
| 756 void trace_heap_after_concurrent_cycle(); | |
| 757 | |
| 758 G1YCType yc_type(); | |
| 759 | |
|
3778
5f6f2615433a
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
3777
diff
changeset
|
760 G1HRPrinter* hr_printer() { return &_hr_printer; } |
|
5f6f2615433a
7049999: G1: Make the G1PrintHeapRegions output consistent and complete
tonyp
parents:
3777
diff
changeset
|
761 |
| 342 | 762 protected: |
| 763 | |
| 764 // Shrink the garbage-first heap by at most the given size (in bytes!). | |
| 765 // (Rounds down to a HeapRegion boundary.) | |
| 766 virtual void shrink(size_t expand_bytes); | |
| 767 void shrink_helper(size_t expand_bytes); | |
| 768 | |
| 1709 | 769 #if TASKQUEUE_STATS |
| 770 static void print_taskqueue_stats_hdr(outputStream* const st = gclog_or_tty); | |
| 771 void print_taskqueue_stats(outputStream* const st = gclog_or_tty) const; | |
| 772 void reset_taskqueue_stats(); | |
| 773 #endif // TASKQUEUE_STATS | |
| 774 | |
| 1973 | 775 // Schedule the VM operation that will do an evacuation pause to |
| 776 // satisfy an allocation request of word_size. *succeeded will | |
| 777 // return whether the VM operation was successful (it did do an | |
| 778 // evacuation pause) or not (another thread beat us to it or the GC | |
| 779 // locker was active). Given that we should not be holding the | |
| 780 // Heap_lock when we enter this method, we will pass the | |
| 781 // gc_count_before (i.e., total_collections()) as a parameter since | |
| 782 // it has to be read while holding the Heap_lock. Currently, both | |
| 783 // methods that call do_collection_pause() release the Heap_lock | |
| 784 // 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
|
785 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
|
786 unsigned int gc_count_before, |
|
f7d3b4387a16
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
12080
diff
changeset
|
787 bool* succeeded, |
|
f7d3b4387a16
8022872: G1: Use correct GC cause for young GC triggered by humongous allocations
brutisso
parents:
12080
diff
changeset
|
788 GCCause::Cause gc_cause); |
| 342 | 789 |
| 790 // The guts of the incremental collection pause, executed by the vm | |
| 1973 | 791 // thread. It returns false if it is unable to do the collection due |
| 792 // to the GC locker being active, true otherwise | |
| 793 bool do_collection_pause_at_safepoint(double target_pause_time_ms); | |
| 342 | 794 |
| 795 // Actually do the work of evacuating the collection set. | |
| 10405 | 796 void evacuate_collection_set(EvacuationInfo& evacuation_info); |
| 342 | 797 |
| 798 // The g1 remembered set of the heap. | |
| 799 G1RemSet* _g1_rem_set; | |
| 800 | |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
801 // 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
|
802 // concurrently after the collection. |
|
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
803 DirtyCardQueueSet _dirty_card_queue_set; |
|
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
804 |
| 342 | 805 // The closure used to refine a single card. |
| 806 RefineCardTableEntryClosure* _refine_cte_cl; | |
| 807 | |
| 808 // A function to check the consistency of dirty card logs. | |
| 809 void check_ct_logs_at_safepoint(); | |
| 810 | |
| 1705 | 811 // A DirtyCardQueueSet that is used to hold cards that contain |
| 812 // references into the current collection set. This is used to | |
| 813 // update the remembered sets of the regions in the collection | |
| 814 // set in the event of an evacuation failure. | |
| 815 DirtyCardQueueSet _into_cset_dirty_card_queue_set; | |
| 816 | |
| 342 | 817 // After a collection pause, make the regions in the CS into free |
| 818 // regions. | |
| 10405 | 819 void free_collection_set(HeapRegion* cs_head, EvacuationInfo& evacuation_info); |
| 342 | 820 |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
821 // 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
|
822 // 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
|
823 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
|
824 |
| 342 | 825 // Applies "scan_non_heap_roots" to roots outside the heap, |
| 826 // "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
|
827 // indicate the region in which the root resides), |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
828 // and does "scan_metadata" If "scan_rs" is |
| 342 | 829 // NULL, then this step is skipped. The "worker_i" |
| 830 // param is for use with parallel roots processing, and should be | |
| 831 // the "i" of the calling parallel worker thread's work(i) function. | |
| 832 // 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
|
833 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
|
834 ScanningOption so, |
| 342 | 835 OopClosure* scan_non_heap_roots, |
| 836 OopsInHeapRegionClosure* scan_rs, | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
837 G1KlassScanClosure* scan_klasses, |
| 342 | 838 int worker_i); |
| 839 | |
| 840 // Apply "blk" to all the weak roots of the system. These include | |
| 841 // JNI weak roots, the code cache, system dictionary, symbol table, | |
| 842 // string table, and referents of reachable weak refs. | |
|
10179
a08c80e9e1e5
8012687: Remove unused is_root checks and closures
stefank
parents:
9076
diff
changeset
|
843 void g1_process_weak_roots(OopClosure* root_closure); |
| 342 | 844 |
| 2361 | 845 // Frees a non-humongous region by initializing its contents and |
| 2152 | 846 // adding it to the free list that's passed as a parameter (this is |
| 847 // usually a local list which will be appended to the master free | |
| 848 // list later). The used bytes of freed regions are accumulated in | |
| 849 // pre_used. If par is true, the region's RSet will not be freed | |
| 850 // up. The assumption is that this will be done later. | |
| 851 void free_region(HeapRegion* hr, | |
| 852 size_t* pre_used, | |
| 853 FreeRegionList* free_list, | |
| 854 bool par); | |
| 342 | 855 |
| 2361 | 856 // Frees a humongous region by collapsing it into individual regions |
| 857 // and calling free_region() for each of them. The freed regions | |
| 858 // will be added to the free list that's passed as a parameter (this | |
| 859 // is usually a local list which will be appended to the master free | |
| 860 // list later). The used bytes of freed regions are accumulated in | |
| 861 // pre_used. If par is true, the region's RSet will not be freed | |
| 862 // up. The assumption is that this will be done later. | |
| 2152 | 863 void free_humongous_region(HeapRegion* hr, |
| 864 size_t* pre_used, | |
| 865 FreeRegionList* free_list, | |
| 866 HumongousRegionSet* humongous_proxy_set, | |
| 867 bool par); | |
| 342 | 868 |
| 3766 | 869 // Notifies all the necessary spaces that the committed space has |
| 870 // been updated (either expanded or shrunk). It should be called | |
| 871 // after _g1_storage is updated. | |
| 872 void update_committed_space(HeapWord* old_end, HeapWord* new_end); | |
| 873 | |
| 342 | 874 // The concurrent marker (and the thread it runs in.) |
| 875 ConcurrentMark* _cm; | |
| 876 ConcurrentMarkThread* _cmThread; | |
| 877 bool _mark_in_progress; | |
| 878 | |
| 879 // The concurrent refiner. | |
| 880 ConcurrentG1Refine* _cg1r; | |
| 881 | |
| 882 // The parallel task queues | |
| 883 RefToScanQueueSet *_task_queues; | |
| 884 | |
| 885 // True iff a evacuation has failed in the current collection. | |
| 886 bool _evacuation_failed; | |
| 887 | |
| 10405 | 888 EvacuationFailedInfo* _evacuation_failed_info_array; |
| 342 | 889 |
| 890 // Failed evacuations cause some logical from-space objects to have | |
| 891 // forwarding pointers to themselves. Reset them. | |
| 892 void remove_self_forwarding_pointers(); | |
| 893 | |
|
8038
ad747ee9d0b1
8002144: G1: large number of evacuation failures may lead to large c heap memory usage
brutisso
parents:
6819
diff
changeset
|
894 // 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
|
895 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
|
896 Stack<markOop, mtGC> _preserved_marks_of_objs; |
| 342 | 897 |
| 898 // Preserve the mark of "obj", if necessary, in preparation for its mark | |
| 899 // word being overwritten with a self-forwarding-pointer. | |
| 900 void preserve_mark_if_necessary(oop obj, markOop m); | |
| 901 | |
| 902 // The stack of evac-failure objects left to be scanned. | |
| 903 GrowableArray<oop>* _evac_failure_scan_stack; | |
| 904 // The closure to apply to evac-failure objects. | |
| 905 | |
| 906 OopsInHeapRegionClosure* _evac_failure_closure; | |
| 907 // Set the field above. | |
| 908 void | |
| 909 set_evac_failure_closure(OopsInHeapRegionClosure* evac_failure_closure) { | |
| 910 _evac_failure_closure = evac_failure_closure; | |
| 911 } | |
| 912 | |
| 913 // Push "obj" on the scan stack. | |
| 914 void push_on_evac_failure_scan_stack(oop obj); | |
| 915 // Process scan stack entries until the stack is empty. | |
| 916 void drain_evac_failure_scan_stack(); | |
| 917 // True iff an invocation of "drain_scan_stack" is in progress; to | |
| 918 // prevent unnecessary recursion. | |
| 919 bool _drain_in_progress; | |
| 920 | |
| 921 // Do any necessary initialization for evacuation-failure handling. | |
| 922 // "cl" is the closure that will be used to process evac-failure | |
| 923 // objects. | |
| 924 void init_for_evac_failure(OopsInHeapRegionClosure* cl); | |
| 925 // Do any necessary cleanup for evacuation-failure handling data | |
| 926 // structures. | |
| 927 void finalize_for_evac_failure(); | |
| 928 | |
| 929 // An attempt to evacuate "obj" has failed; take necessary steps. | |
| 10405 | 930 oop handle_evacuation_failure_par(G1ParScanThreadState* _par_scan_state, oop obj); |
| 342 | 931 void handle_evacuation_failure_common(oop obj, markOop m); |
| 932 | |
|
6629
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
933 #ifndef PRODUCT |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
934 // Support for forcing evacuation failures. Analogous to |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
935 // PromotionFailureALot for the other collectors. |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
936 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
937 // Records whether G1EvacuationFailureALot should be in effect |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
938 // for the current GC |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
939 bool _evacuation_failure_alot_for_current_gc; |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
940 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
941 // 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
|
942 // determining whether G1EvaucationFailureALot is in effect |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
943 // for the current GC. |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
944 size_t _evacuation_failure_alot_gc_number; |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
945 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
946 // 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
|
947 volatile size_t _evacuation_failure_alot_count; |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
948 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
949 // Set whether G1EvacuationFailureALot should be in effect |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
950 // 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
|
951 // command line flags are set); |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
952 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
|
953 bool during_initial_mark, |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
954 bool during_marking); |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
955 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
956 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
|
957 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
958 // 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
|
959 inline bool evacuation_should_fail(); |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
960 |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
961 // Reset the G1EvacuationFailureALot counters. Should be called at |
| 10405 | 962 // 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
|
963 inline void reset_evacuation_should_fail(); |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
964 #endif // !PRODUCT |
|
c9814fadeb38
7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents:
6628
diff
changeset
|
965 |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
966 // ("Weak") Reference processing support. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
967 // |
| 10405 | 968 // G1 has 2 instances of the reference processor class. One |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
969 // (_ref_processor_cm) handles reference object discovery |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
970 // and subsequent processing during concurrent marking cycles. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
971 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
972 // The other (_ref_processor_stw) handles reference object |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
973 // discovery and processing during full GCs and incremental |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
974 // evacuation pauses. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
975 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
976 // During an incremental pause, reference discovery will be |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
977 // temporarily disabled for _ref_processor_cm and will be |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
978 // enabled for _ref_processor_stw. At the end of the evacuation |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
979 // pause references discovered by _ref_processor_stw will be |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
980 // processed and discovery will be disabled. The previous |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
981 // setting for reference object discovery for _ref_processor_cm |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
982 // will be re-instated. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
983 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
984 // At the start of marking: |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
985 // * Discovery by the CM ref processor is verified to be inactive |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
986 // and it's discovered lists are empty. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
987 // * Discovery by the CM ref processor is then enabled. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
988 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
989 // At the end of marking: |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
990 // * Any references on the CM ref processor's discovered |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
991 // lists are processed (possibly MT). |
|
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 start of full GC we: |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
994 // * Disable discovery by the CM ref processor and |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
995 // empty CM ref processor's discovered lists |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
996 // (without processing any entries). |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
997 // * Verify that the STW ref processor is inactive and it's |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
998 // discovered lists are empty. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
999 // * Temporarily set STW ref processor discovery as single threaded. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1000 // * Temporarily clear the STW ref processor's _is_alive_non_header |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1001 // field. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1002 // * Finally enable discovery by the STW ref processor. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1003 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1004 // The STW ref processor is used to record any discovered |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1005 // references during the full GC. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1006 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1007 // At the end of a full GC we: |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1008 // * Enqueue any reference objects discovered by the STW ref processor |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1009 // that have non-live referents. This has the side-effect of |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1010 // making the STW ref processor inactive by disabling discovery. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1011 // * Verify that the CM ref processor is still inactive |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1012 // and no references have been placed on it's discovered |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1013 // lists (also checked as a precondition during initial marking). |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1014 |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1015 // The (stw) reference processor... |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1016 ReferenceProcessor* _ref_processor_stw; |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1017 |
| 10405 | 1018 STWGCTimer* _gc_timer_stw; |
| 1019 ConcurrentGCTimer* _gc_timer_cm; | |
| 1020 | |
| 1021 G1OldTracer* _gc_tracer_cm; | |
| 1022 G1NewTracer* _gc_tracer_stw; | |
| 1023 | |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1024 // During reference object discovery, the _is_alive_non_header |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1025 // closure (if non-null) is applied to the referent object to |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1026 // determine whether the referent is live. If so then the |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1027 // reference object does not need to be 'discovered' and can |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1028 // 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
|
1029 // the number of 'discovered' reference objects that need to |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1030 // be processed. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1031 // |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1032 // Instance of the is_alive closure for embedding into the |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1033 // STW reference processor as the _is_alive_non_header field. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1034 // Supplying a value for the _is_alive_non_header field is |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1035 // optional but doing so prevents unnecessary additions to |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1036 // the discovered lists during reference discovery. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1037 G1STWIsAliveClosure _is_alive_closure_stw; |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1038 |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1039 // The (concurrent marking) reference processor... |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1040 ReferenceProcessor* _ref_processor_cm; |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1041 |
|
2037
b03260081e9b
7006113: G1: Initialize ReferenceProcessor::_is_alive_non_header field
johnc
parents:
2030
diff
changeset
|
1042 // Instance of the concurrent mark is_alive closure for embedding |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1043 // into the Concurrent Marking reference processor as the |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1044 // _is_alive_non_header field. Supplying a value for the |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1045 // _is_alive_non_header field is optional but doing so prevents |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1046 // unnecessary additions to the discovered lists during reference |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1047 // discovery. |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1048 G1CMIsAliveClosure _is_alive_closure_cm; |
| 342 | 1049 |
|
4709
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1050 // 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
|
1051 HeapRegion** _worker_cset_start_region; |
|
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1052 |
|
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1053 // 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
|
1054 // 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
|
1055 // 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
|
1056 // 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
|
1057 // of G1CollectedHeap::_gc_time_stamp. |
|
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1058 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
|
1059 |
| 342 | 1060 enum G1H_process_strong_roots_tasks { |
|
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
4783
diff
changeset
|
1061 G1H_PS_filter_satb_buffers, |
| 342 | 1062 G1H_PS_refProcessor_oops_do, |
| 1063 // Leave this one last. | |
| 1064 G1H_PS_NumElements | |
| 1065 }; | |
| 1066 | |
| 1067 SubTasksDone* _process_strong_tasks; | |
| 1068 | |
| 2152 | 1069 volatile bool _free_regions_coming; |
| 342 | 1070 |
| 1071 public: | |
|
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1718
diff
changeset
|
1072 |
|
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1718
diff
changeset
|
1073 SubTasksDone* process_strong_tasks() { return _process_strong_tasks; } |
|
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1718
diff
changeset
|
1074 |
| 342 | 1075 void set_refine_cte_cl_concurrency(bool concurrent); |
| 1076 | |
| 1709 | 1077 RefToScanQueue *task_queue(int i) const; |
| 342 | 1078 |
|
616
4f360ec815ba
6720309: G1: don't synchronously update RSet during evacuation pauses
iveresov
parents:
545
diff
changeset
|
1079 // 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
|
1080 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
|
1081 |
| 1705 | 1082 // A DirtyCardQueueSet that is used to hold cards that contain |
| 1083 // references into the current collection set. This is used to | |
| 1084 // update the remembered sets of the regions in the collection | |
| 1085 // set in the event of an evacuation failure. | |
| 1086 DirtyCardQueueSet& into_cset_dirty_card_queue_set() | |
| 1087 { return _into_cset_dirty_card_queue_set; } | |
| 1088 | |
| 342 | 1089 // Create a G1CollectedHeap with the specified policy. |
| 1090 // Must call the initialize method afterwards. | |
| 1091 // May not return if something goes wrong. | |
| 1092 G1CollectedHeap(G1CollectorPolicy* policy); | |
| 1093 | |
| 1094 // 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
|
1095 // maximum sizes and remembered and barrier sets |
| 342 | 1096 // specified by the policy object. |
| 1097 jint initialize(); | |
| 1098 | |
|
12233
40136aa2cdb1
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
12113
diff
changeset
|
1099 // 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
|
1100 static size_t conservative_max_heap_alignment(); |
|
40136aa2cdb1
8010722: assert: failed: heap size is too big for compressed oops
tschatzl
parents:
12113
diff
changeset
|
1101 |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1102 // Initialize weak reference processing. |
|
2037
b03260081e9b
7006113: G1: Initialize ReferenceProcessor::_is_alive_non_header field
johnc
parents:
2030
diff
changeset
|
1103 virtual void ref_processing_init(); |
| 342 | 1104 |
|
4728
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4709
diff
changeset
|
1105 void set_par_threads(uint t) { |
| 342 | 1106 SharedHeap::set_par_threads(t); |
|
4095
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1107 // Done in SharedHeap but oddly there are |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1108 // two _process_strong_tasks's in a G1CollectedHeap |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1109 // so do it here too. |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1110 _process_strong_tasks->set_n_threads(t); |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1111 } |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1112 |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1113 // Set _n_par_threads according to a policy TBD. |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1114 void set_par_threads(); |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1115 |
|
bca17e38de00
6593758: RFE: Enhance GC ergonomics to dynamically choose ParallelGCThreads
jmasa
parents:
4090
diff
changeset
|
1116 void set_n_termination(int t) { |
|
1833
8b10f48633dc
6984287: Regularize how GC parallel workers are specified.
jmasa
parents:
1718
diff
changeset
|
1117 _process_strong_tasks->set_n_threads(t); |
| 342 | 1118 } |
| 1119 | |
| 1120 virtual CollectedHeap::Name kind() const { | |
| 1121 return CollectedHeap::G1CollectedHeap; | |
| 1122 } | |
| 1123 | |
| 1124 // The current policy object for the collector. | |
| 1125 G1CollectorPolicy* g1_policy() const { return _g1_policy; } | |
| 1126 | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
1127 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
|
1128 |
| 342 | 1129 // Adaptive size policy. No such thing for g1. |
| 1130 virtual AdaptiveSizePolicy* size_policy() { return NULL; } | |
| 1131 | |
| 1132 // The rem set and barrier set. | |
| 1133 G1RemSet* g1_rem_set() const { return _g1_rem_set; } | |
| 1134 | |
| 1135 unsigned get_gc_time_stamp() { | |
| 1136 return _gc_time_stamp; | |
| 1137 } | |
| 1138 | |
| 1139 void reset_gc_time_stamp() { | |
| 1140 _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
|
1141 OrderAccess::fence(); |
|
4709
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1142 // 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
|
1143 // 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
|
1144 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
|
1145 } |
|
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
|
1146 |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1147 void check_gc_time_stamps() PRODUCT_RETURN; |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1148 |
|
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
|
1149 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
|
1150 ++_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
|
1151 OrderAccess::fence(); |
| 342 | 1152 } |
| 1153 | |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1154 // 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
|
1155 // also reset the GC timestamp of its corresponding |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1156 // continues humongous regions too. |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1157 void reset_gc_time_stamps(HeapRegion* hr); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1158 |
| 1705 | 1159 void iterate_dirty_card_closure(CardTableEntryClosure* cl, |
| 1160 DirtyCardQueue* into_cset_dcq, | |
| 1161 bool concurrent, int worker_i); | |
| 342 | 1162 |
| 1163 // The shared block offset table array. | |
| 1164 G1BlockOffsetSharedArray* bot_shared() const { return _bot_shared; } | |
| 1165 | |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1166 // Reference Processing accessors |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1167 |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1168 // The STW reference processor.... |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1169 ReferenceProcessor* ref_processor_stw() const { return _ref_processor_stw; } |
|
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1170 |
| 10405 | 1171 // The Concurrent Marking reference processor... |
|
3979
4dfb2df418f2
6484982: G1: process references during evacuation pauses
johnc
parents:
3973
diff
changeset
|
1172 ReferenceProcessor* ref_processor_cm() const { return _ref_processor_cm; } |
| 342 | 1173 |
| 10405 | 1174 ConcurrentGCTimer* gc_timer_cm() const { return _gc_timer_cm; } |
| 1175 G1OldTracer* gc_tracer_cm() const { return _gc_tracer_cm; } | |
| 1176 | |
| 342 | 1177 virtual size_t capacity() const; |
| 1178 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
|
1179 // 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
|
1180 // 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
|
1181 size_t used_unlocked() const; |
| 342 | 1182 size_t recalculate_used() const; |
| 1183 | |
| 1184 // These virtual functions do the actual allocation. | |
| 1185 // Some heaps may offer a contiguous region for shared non-blocking | |
| 1186 // allocation, via inlined code (by exporting the address of the top and | |
| 1187 // end fields defining the extent of the contiguous allocation region.) | |
| 1188 // But G1CollectedHeap doesn't yet support this. | |
| 1189 | |
| 1190 // Return an estimate of the maximum allocation that could be performed | |
| 1191 // without triggering any collection or expansion activity. In a | |
| 1192 // generational collector, for example, this is probably the largest | |
| 1193 // allocation that could be supported (without expansion) in the youngest | |
| 1194 // generation. It is "unsafe" because no locks are taken; the result | |
| 1195 // should be treated as an approximation, not a guarantee, for use in | |
| 1196 // heuristic resizing decisions. | |
| 1197 virtual size_t unsafe_max_alloc(); | |
| 1198 | |
| 1199 virtual bool is_maximal_no_gc() const { | |
| 1200 return _g1_storage.uncommitted_size() == 0; | |
| 1201 } | |
| 1202 | |
| 1203 // 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
|
1204 uint n_regions() { return _hrs.length(); } |
| 3766 | 1205 |
| 1206 // 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
|
1207 uint max_regions() { return _hrs.max_length(); } |
| 342 | 1208 |
| 1209 // 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
|
1210 uint free_regions() { return _free_list.length(); } |
| 342 | 1211 |
| 1212 // 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
|
1213 uint used_regions() { return n_regions() - free_regions(); } |
| 342 | 1214 |
| 1215 // 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
|
1216 uint expansion_regions() { return _expansion_regions; } |
| 342 | 1217 |
| 3766 | 1218 // Factory method for HeapRegion instances. It will return NULL if |
| 1219 // the allocation fails. | |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
1220 HeapRegion* new_heap_region(uint hrs_index, HeapWord* bottom); |
| 3766 | 1221 |
|
3317
063382f9b575
7035144: G1: nightly failure: Non-dirty cards in region that should be dirty (failures still exist...)
tonyp
parents:
3289
diff
changeset
|
1222 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
|
1223 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
|
1224 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
|
1225 void verify_dirty_young_regions() PRODUCT_RETURN; |
|
abdfc822206f
7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents:
2432
diff
changeset
|
1226 |
| 2152 | 1227 // verify_region_sets() performs verification over the region |
| 1228 // lists. It will be compiled in the product code to be used when | |
| 1229 // necessary (i.e., during heap verification). | |
| 1230 void verify_region_sets(); | |
| 342 | 1231 |
| 2152 | 1232 // verify_region_sets_optional() is planted in the code for |
| 1233 // list verification in non-product builds (and it can be enabled in | |
| 10405 | 1234 // product builds by defining HEAP_REGION_SET_FORCE_VERIFY to be 1). |
| 2152 | 1235 #if HEAP_REGION_SET_FORCE_VERIFY |
| 1236 void verify_region_sets_optional() { | |
| 1237 verify_region_sets(); | |
| 1238 } | |
| 1239 #else // HEAP_REGION_SET_FORCE_VERIFY | |
| 1240 void verify_region_sets_optional() { } | |
| 1241 #endif // HEAP_REGION_SET_FORCE_VERIFY | |
| 342 | 1242 |
| 2152 | 1243 #ifdef ASSERT |
| 2361 | 1244 bool is_on_master_free_list(HeapRegion* hr) { |
| 2152 | 1245 return hr->containing_set() == &_free_list; |
| 1246 } | |
| 342 | 1247 |
| 2361 | 1248 bool is_in_humongous_set(HeapRegion* hr) { |
| 2152 | 1249 return hr->containing_set() == &_humongous_set; |
| 2361 | 1250 } |
| 2152 | 1251 #endif // ASSERT |
| 342 | 1252 |
| 2152 | 1253 // Wrapper for the region list operations that can be called from |
| 1254 // methods outside this class. | |
| 342 | 1255 |
| 2152 | 1256 void secondary_free_list_add_as_tail(FreeRegionList* list) { |
| 1257 _secondary_free_list.add_as_tail(list); | |
| 1258 } | |
| 342 | 1259 |
| 2152 | 1260 void append_secondary_free_list() { |
|
2432
455328d90876
7029458: G1: Add newly-reclaimed regions to the beginning of the region free list, not the end
tonyp
parents:
2361
diff
changeset
|
1261 _free_list.add_as_head(&_secondary_free_list); |
| 2152 | 1262 } |
| 342 | 1263 |
| 2361 | 1264 void append_secondary_free_list_if_not_empty_with_lock() { |
| 1265 // If the secondary free list looks empty there's no reason to | |
| 1266 // take the lock and then try to append it. | |
| 2152 | 1267 if (!_secondary_free_list.is_empty()) { |
| 1268 MutexLockerEx x(SecondaryFreeList_lock, Mutex::_no_safepoint_check_flag); | |
| 1269 append_secondary_free_list(); | |
| 1270 } | |
| 1271 } | |
| 342 | 1272 |
| 4072 | 1273 void old_set_remove(HeapRegion* hr) { |
| 1274 _old_set.remove(hr); | |
| 1275 } | |
| 1276 | |
|
4829
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
1277 size_t non_young_capacity_bytes() { |
|
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
1278 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
|
1279 } |
|
9509c20bba28
6976060: G1: humongous object allocations should initiate marking cycles when necessary
brutisso
parents:
4787
diff
changeset
|
1280 |
| 2152 | 1281 void set_free_regions_coming(); |
| 1282 void reset_free_regions_coming(); | |
| 1283 bool free_regions_coming() { return _free_regions_coming; } | |
| 1284 void wait_while_free_regions_coming(); | |
| 342 | 1285 |
|
4912
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4910
diff
changeset
|
1286 // 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
|
1287 // old GC alloc region. |
|
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4910
diff
changeset
|
1288 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
|
1289 return hr == _retained_old_gc_alloc_region; |
|
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4910
diff
changeset
|
1290 } |
|
a9647476d1a4
7132029: G1: mixed GC phase lasts for longer than it should
tonyp
parents:
4910
diff
changeset
|
1291 |
| 342 | 1292 // Perform a collection of the heap; intended for use in implementing |
| 1293 // "System.gc". This probably implies as full a collection as the | |
| 1294 // "CollectedHeap" supports. | |
| 1295 virtual void collect(GCCause::Cause cause); | |
| 1296 | |
| 1297 // The same as above but assume that the caller holds the Heap_lock. | |
| 1298 void collect_locked(GCCause::Cause cause); | |
| 1299 | |
| 10405 | 1300 // True iff an evacuation has failed in the most-recent collection. |
| 342 | 1301 bool evacuation_failed() { return _evacuation_failed; } |
| 1302 | |
| 2152 | 1303 // It will free a region if it has allocated objects in it that are |
| 1304 // all dead. It calls either free_region() or | |
| 1305 // free_humongous_region() depending on the type of the region that | |
| 1306 // is passed to it. | |
| 2173 | 1307 void free_region_if_empty(HeapRegion* hr, |
| 1308 size_t* pre_used, | |
| 1309 FreeRegionList* free_list, | |
| 4072 | 1310 OldRegionSet* old_proxy_set, |
| 2173 | 1311 HumongousRegionSet* humongous_proxy_set, |
| 1312 HRRSCleanupTask* hrrs_cleanup_task, | |
| 1313 bool par); | |
| 342 | 1314 |
| 2152 | 1315 // It appends the free list to the master free list and updates the |
| 1316 // master humongous list according to the contents of the proxy | |
| 1317 // list. It also adjusts the total used bytes according to pre_used | |
| 1318 // (if par is true, it will do so by taking the ParGCRareEvent_lock). | |
| 1319 void update_sets_after_freeing_regions(size_t pre_used, | |
| 1320 FreeRegionList* free_list, | |
| 4072 | 1321 OldRegionSet* old_proxy_set, |
| 2152 | 1322 HumongousRegionSet* humongous_proxy_set, |
| 1323 bool par); | |
| 342 | 1324 |
| 4708 | 1325 // Returns "TRUE" iff "p" points into the committed areas of the heap. |
| 342 | 1326 virtual bool is_in(const void* p) const; |
| 1327 | |
| 1328 // Return "TRUE" iff the given object address is within the collection | |
| 1329 // set. | |
| 1330 inline bool obj_in_cs(oop obj); | |
| 1331 | |
| 1332 // 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
|
1333 // region of g1. |
| 342 | 1334 bool is_in_g1_reserved(const void* p) const { |
| 1335 return _g1_reserved.contains(p); | |
| 1336 } | |
| 1337 | |
|
2435
371bbc844bf1
7027766: G1: introduce flag to dump the liveness information per region at the end of marking
tonyp
parents:
2433
diff
changeset
|
1338 // 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
|
1339 // 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
|
1340 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
|
1341 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
|
1342 } |
|
371bbc844bf1
7027766: G1: introduce flag to dump the liveness information per region at the end of marking
tonyp
parents:
2433
diff
changeset
|
1343 |
|
371bbc844bf1
7027766: G1: introduce flag to dump the liveness information per region at the end of marking
tonyp
parents:
2433
diff
changeset
|
1344 // Returns a MemRegion that corresponds to the space that has been |
| 342 | 1345 // committed in the heap |
| 1346 MemRegion g1_committed() { | |
| 1347 return _g1_committed; | |
| 1348 } | |
| 1349 | |
| 2311 | 1350 virtual bool is_in_closed_subset(const void* p) const; |
| 342 | 1351 |
| 12343 | 1352 G1SATBCardTableModRefBS* g1_barrier_set() { |
| 1353 return (G1SATBCardTableModRefBS*) barrier_set(); | |
| 1354 } | |
| 1355 | |
| 342 | 1356 // This resets the card table to all zeros. It is used after |
| 1357 // a collection pause which used the card table to claim cards. | |
| 1358 void cleanUpCardTable(); | |
| 1359 | |
| 1360 // Iteration functions. | |
| 1361 | |
| 1362 // Iterate over all the ref-containing fields of all objects, calling | |
| 1363 // "cl.do_oop" on each. | |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
1364 virtual void oop_iterate(ExtendedOopClosure* cl); |
| 342 | 1365 |
| 1366 // 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
|
1367 void oop_iterate(MemRegion mr, ExtendedOopClosure* cl); |
| 342 | 1368 |
| 1369 // 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
|
1370 virtual void object_iterate(ObjectClosure* cl); |
|
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
1371 |
| 678 | 1372 virtual void safe_object_iterate(ObjectClosure* cl) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
1373 object_iterate(cl); |
| 678 | 1374 } |
| 342 | 1375 |
| 1376 // Iterate over all spaces in use in the heap, in ascending address order. | |
| 1377 virtual void space_iterate(SpaceClosure* cl); | |
| 1378 | |
| 1379 // Iterate over heap regions, in address order, terminating the | |
| 1380 // iteration early if the "doHeapRegion" method returns "true". | |
| 3766 | 1381 void heap_region_iterate(HeapRegionClosure* blk) const; |
| 342 | 1382 |
| 3766 | 1383 // Return the region with the given index. It assumes the index is valid. |
|
6010
720b6a76dd9d
7157073: G1: type change size_t -> uint for region counts / indexes
tonyp
parents:
6008
diff
changeset
|
1384 HeapRegion* region_at(uint index) const { return _hrs.at(index); } |
| 342 | 1385 |
| 1386 // Divide the heap region sequence into "chunks" of some size (the number | |
| 1387 // of regions divided by the number of parallel threads times some | |
| 1388 // overpartition factor, currently 4). Assumes that this will be called | |
| 1389 // in parallel by ParallelGCThreads worker threads with discinct worker | |
| 1390 // ids in the range [0..max(ParallelGCThreads-1, 1)], that all parallel | |
| 1391 // calls will use the same "claim_value", and that that claim value is | |
| 1392 // different from the claim_value of any heap region before the start of | |
| 1393 // the iteration. Applies "blk->doHeapRegion" to each of the regions, by | |
| 1394 // attempting to claim the first region in each chunk, and, if | |
| 1395 // successful, applying the closure to each region in the chunk (and | |
| 1396 // setting the claim value of the second and subsequent regions of the | |
| 1397 // chunk.) For now requires that "doHeapRegion" always returns "false", | |
| 1398 // i.e., that a closure never attempt to abort a traversal. | |
| 1399 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
|
1400 uint worker, |
|
441e946dc1af
7121618: Change type of number of GC workers to unsigned int.
jmasa
parents:
4709
diff
changeset
|
1401 uint no_of_par_workers, |
| 342 | 1402 jint claim_value); |
| 1403 | |
| 390 | 1404 // It resets all the region claim values to the default. |
| 1405 void reset_heap_region_claim_values(); | |
| 1406 | |
|
4783
023652e49ac0
7121496: G1: do the per-region evacuation failure handling work in parallel
johnc
parents:
4781
diff
changeset
|
1407 // 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
|
1408 // collection set to the default. |
|
023652e49ac0
7121496: G1: do the per-region evacuation failure handling work in parallel
johnc
parents:
4781
diff
changeset
|
1409 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
|
1410 |
| 355 | 1411 #ifdef ASSERT |
| 1412 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
|
1413 |
|
dc467e8b2c5e
7112743: G1: Reduce overhead of marking closure during evacuation pauses
johnc
parents:
4095
diff
changeset
|
1414 // 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
|
1415 // current collection set. |
|
dc467e8b2c5e
7112743: G1: Reduce overhead of marking closure during evacuation pauses
johnc
parents:
4095
diff
changeset
|
1416 bool check_cset_heap_region_claim_values(jint claim_value); |
| 355 | 1417 #endif // ASSERT |
| 1418 | |
|
4709
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1419 // 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
|
1420 // 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
|
1421 void clear_cset_start_regions(); |
|
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1422 |
|
fd2b426c30db
7119908: G1: Cache CSet start region for each worker for subsequent reuse
johnc
parents:
4708
diff
changeset
|
1423 // 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
|
1424 // 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
|
1425 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
|
1426 |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1427 // 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
|
1428 // HeapRegionIterator classes to calculate the starting region for |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1429 // 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
|
1430 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
|
1431 |
| 342 | 1432 // Iterate over the regions (if any) in the current collection set. |
| 1433 void collection_set_iterate(HeapRegionClosure* blk); | |
| 1434 | |
| 1435 // As above but starting from region r | |
| 1436 void collection_set_iterate_from(HeapRegion* r, HeapRegionClosure *blk); | |
| 1437 | |
| 1438 // Returns the first (lowest address) compactible space in the heap. | |
| 1439 virtual CompactibleSpace* first_compactible_space(); | |
| 1440 | |
| 1441 // A CollectedHeap will contain some number of spaces. This finds the | |
| 1442 // space containing a given address, or else returns NULL. | |
| 1443 virtual Space* space_containing(const void* addr) const; | |
| 1444 | |
| 1445 // A G1CollectedHeap will contain some number of heap regions. This | |
| 1446 // finds the region containing a given address, or else returns NULL. | |
| 3766 | 1447 template <class T> |
| 1448 inline HeapRegion* heap_region_containing(const T addr) const; | |
| 342 | 1449 |
| 1450 // Like the above, but requires "addr" to be in the heap (to avoid a | |
| 1451 // null-check), and unlike the above, may return an continuing humongous | |
| 1452 // region. | |
| 3766 | 1453 template <class T> |
| 1454 inline HeapRegion* heap_region_containing_raw(const T addr) const; | |
| 342 | 1455 |
| 1456 // A CollectedHeap is divided into a dense sequence of "blocks"; that is, | |
| 1457 // each address in the (reserved) heap is a member of exactly | |
| 1458 // one block. The defining characteristic of a block is that it is | |
| 1459 // possible to find its size, and thus to progress forward to the next | |
| 1460 // block. (Blocks may be of different sizes.) Thus, blocks may | |
| 1461 // represent Java objects, or they might be free blocks in a | |
| 1462 // free-list-based heap (or subheap), as long as the two kinds are | |
| 1463 // distinguishable and the size of each is determinable. | |
| 1464 | |
| 1465 // Returns the address of the start of the "block" that contains the | |
| 1466 // address "addr". We say "blocks" instead of "object" since some heaps | |
| 1467 // may not pack objects densely; a chunk may either be an object or a | |
| 1468 // non-object. | |
| 1469 virtual HeapWord* block_start(const void* addr) const; | |
| 1470 | |
| 1471 // Requires "addr" to be the start of a chunk, and returns its size. | |
| 1472 // "addr + size" is required to be the start of a new chunk, or the end | |
| 1473 // of the active area of the heap. | |
| 1474 virtual size_t block_size(const HeapWord* addr) const; | |
| 1475 | |
| 1476 // Requires "addr" to be the start of a block, and returns "TRUE" iff | |
| 1477 // the block is an object. | |
| 1478 virtual bool block_is_obj(const HeapWord* addr) const; | |
| 1479 | |
| 1480 // Does this heap support heap inspection? (+PrintClassHistogram) | |
| 1481 virtual bool supports_heap_inspection() const { return true; } | |
| 1482 | |
| 1483 // Section on thread-local allocation buffers (TLABs) | |
| 1484 // See CollectedHeap for semantics. | |
| 1485 | |
| 1486 virtual bool supports_tlab_allocation() const; | |
| 1487 virtual size_t tlab_capacity(Thread* thr) const; | |
| 1488 virtual size_t unsafe_max_tlab_alloc(Thread* thr) const; | |
| 1489 | |
| 1490 // Can a compiler initialize a new object without store barriers? | |
| 1491 // 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
|
1492 // 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
|
1493 // 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
|
1494 // 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
|
1495 // 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
|
1496 // 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
|
1497 // 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
|
1498 // 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
|
1499 // 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
|
1500 // 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
|
1501 // 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
|
1502 // See ReduceInitialCardMarks. |
| 342 | 1503 virtual bool can_elide_tlab_store_barriers() const { |
|
3988
246daf2c601d
7005808: G1: re-enable ReduceInitialCardMarks for G1
brutisso
parents:
3980
diff
changeset
|
1504 return true; |
|
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1505 } |
|
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1506 |
| 1166 | 1507 virtual bool card_mark_must_follow_store() const { |
| 1508 return true; | |
| 1509 } | |
| 1510 | |
| 3766 | 1511 bool is_in_young(const oop obj) { |
|
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1512 HeapRegion* hr = heap_region_containing(obj); |
|
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1513 return hr != NULL && hr->is_young(); |
|
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1514 } |
|
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1515 |
|
3377
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
3317
diff
changeset
|
1516 #ifdef ASSERT |
|
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
3317
diff
changeset
|
1517 virtual bool is_in_partial_collection(const void* p); |
|
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
3317
diff
changeset
|
1518 #endif |
|
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
3317
diff
changeset
|
1519 |
|
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
3317
diff
changeset
|
1520 virtual bool is_scavengable(const void* addr); |
|
2aa9ddbb9e60
7041789: 30% perf regression with c2/arm following 7017732
jmasa
parents:
3317
diff
changeset
|
1521 |
|
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1522 // 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
|
1523 // 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
|
1524 // 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
|
1525 // 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
|
1526 // information for young gen objects. |
|
1027
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1527 virtual bool can_elide_initializing_store_barrier(oop new_obj) { |
|
39b01ab7035a
6888898: CMS: ReduceInitialCardMarks unsafe in the presence of cms precleaning
ysr
parents:
942
diff
changeset
|
1528 return is_in_young(new_obj); |
| 342 | 1529 } |
| 1530 | |
| 1531 // Returns "true" iff the given word_size is "very large". | |
| 1532 static bool isHumongous(size_t word_size) { | |
|
1313
664ae0c5e0e5
6755988: G1: assert(new_obj != 0 || ... "should be forwarded")
johnc
parents:
1311
diff
changeset
|
1533 // 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
|
1534 // 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
|
1535 // 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
|
1536 // humongous and that we don't allocate a humongous |
|
664ae0c5e0e5
6755988: G1: assert(new_obj != 0 || ... "should be forwarded")
johnc
parents:
1311
diff
changeset
|
1537 // object in a TLAB. |
|
664ae0c5e0e5
6755988: G1: assert(new_obj != 0 || ... "should be forwarded")
johnc
parents:
1311
diff
changeset
|
1538 return word_size > _humongous_object_threshold_in_words; |
| 342 | 1539 } |
| 1540 | |
| 1541 // Update mod union table with the set of dirty cards. | |
| 1542 void updateModUnion(); | |
| 1543 | |
| 1544 // Set the mod union bits corresponding to the given memRegion. Note | |
| 1545 // that this is always a safe operation, since it doesn't clear any | |
| 1546 // bits. | |
| 1547 void markModUnionRange(MemRegion mr); | |
| 1548 | |
| 1549 // Records the fact that a marking phase is no longer in progress. | |
| 1550 void set_marking_complete() { | |
| 1551 _mark_in_progress = false; | |
| 1552 } | |
| 1553 void set_marking_started() { | |
| 1554 _mark_in_progress = true; | |
| 1555 } | |
| 1556 bool mark_in_progress() { | |
| 1557 return _mark_in_progress; | |
| 1558 } | |
| 1559 | |
| 1560 // Print the maximum heap capacity. | |
| 1561 virtual size_t max_capacity() const; | |
| 1562 | |
| 1563 virtual jlong millis_since_last_gc(); | |
| 1564 | |
|
3777
e8b0b0392037
7046182: G1: remove unnecessary iterations over the collection set
tonyp
parents:
3774
diff
changeset
|
1565 |
| 342 | 1566 // Convenience function to be used in situations where the heap type can be |
| 1567 // asserted to be this type. | |
| 1568 static G1CollectedHeap* heap(); | |
| 1569 | |
| 1570 void set_region_short_lived_locked(HeapRegion* hr); | |
| 1571 // add appropriate methods for any other surv rate groups | |
| 1572 | |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1573 YoungList* young_list() { return _young_list; } |
| 342 | 1574 |
| 1575 // debugging | |
| 1576 bool check_young_list_well_formed() { | |
| 1577 return _young_list->check_list_well_formed(); | |
| 1578 } | |
|
1394
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1579 |
|
1316cec51b4d
6819061: G1: eliminate serial Other times that are proportional to the collection set length
johnc
parents:
1391
diff
changeset
|
1580 bool check_young_list_empty(bool check_heap, |
| 342 | 1581 bool check_sample = true); |
| 1582 | |
| 1583 // *** Stuff related to concurrent marking. It's not clear to me that so | |
| 1584 // many of these need to be public. | |
| 1585 | |
| 1586 // The functions below are helper functions that a subclass of | |
| 1587 // "CollectedHeap" can use in the implementation of its virtual | |
| 1588 // functions. | |
| 1589 // This performs a concurrent marking of the live objects in a | |
| 1590 // bitmap off to the side. | |
| 1591 void doConcurrentMark(); | |
| 1592 | |
| 1593 bool isMarkedPrev(oop obj) const; | |
| 1594 bool isMarkedNext(oop obj) const; | |
| 1595 | |
| 1596 // Determine if an object is dead, given the object and also | |
| 1597 // the region to which the object belongs. An object is dead | |
| 1598 // iff a) it was not allocated since the last mark and b) it | |
| 1599 // is not marked. | |
| 1600 | |
| 1601 bool is_obj_dead(const oop obj, const HeapRegion* hr) const { | |
| 1602 return | |
| 1603 !hr->obj_allocated_since_prev_marking(obj) && | |
| 1604 !isMarkedPrev(obj); | |
| 1605 } | |
| 1606 | |
| 1607 // This function returns true when an object has been | |
| 1608 // around since the previous marking and hasn't yet | |
| 1609 // been marked during this marking. | |
| 1610 | |
| 1611 bool is_obj_ill(const oop obj, const HeapRegion* hr) const { | |
| 1612 return | |
| 1613 !hr->obj_allocated_since_next_marking(obj) && | |
| 1614 !isMarkedNext(obj); | |
| 1615 } | |
| 1616 | |
| 1617 // Determine if an object is dead, given only the object itself. | |
| 1618 // This will find the region to which the object belongs and | |
| 1619 // then call the region version of the same function. | |
| 1620 | |
| 1621 // Added if it is NULL it isn't dead. | |
| 1622 | |
|
3772
6747fd0512e0
7004681: G1: Extend marking verification to Full GCs
johnc
parents:
3766
diff
changeset
|
1623 bool is_obj_dead(const oop obj) const { |
| 811 | 1624 const HeapRegion* hr = heap_region_containing(obj); |
| 342 | 1625 if (hr == NULL) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
1626 if (obj == NULL) return false; |
| 342 | 1627 else return true; |
| 1628 } | |
| 1629 else return is_obj_dead(obj, hr); | |
| 1630 } | |
| 1631 | |
|
3772
6747fd0512e0
7004681: G1: Extend marking verification to Full GCs
johnc
parents:
3766
diff
changeset
|
1632 bool is_obj_ill(const oop obj) const { |
| 811 | 1633 const HeapRegion* hr = heap_region_containing(obj); |
| 342 | 1634 if (hr == NULL) { |
|
6725
da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
6629
diff
changeset
|
1635 if (obj == NULL) return false; |
| 342 | 1636 else return true; |
| 1637 } | |
| 1638 else return is_obj_ill(obj, hr); | |
| 1639 } | |
| 1640 | |
| 12080 | 1641 bool allocated_since_marking(oop obj, HeapRegion* hr, VerifyOption vo); |
| 1642 HeapWord* top_at_mark_start(HeapRegion* hr, VerifyOption vo); | |
| 1643 bool is_marked(oop obj, VerifyOption vo); | |
| 1644 const char* top_at_mark_start_str(VerifyOption vo); | |
| 1645 | |
| 1646 ConcurrentMark* concurrent_mark() const { return _cm; } | |
| 1647 | |
| 1648 // Refinement | |
| 1649 | |
| 1650 ConcurrentG1Refine* concurrent_g1_refine() const { return _cg1r; } | |
| 1651 | |
| 1652 // The dirty cards region list is used to record a subset of regions | |
| 1653 // whose cards need clearing. The list if populated during the | |
| 1654 // remembered set scanning and drained during the card table | |
| 1655 // cleanup. Although the methods are reentrant, population/draining | |
| 1656 // phases must not overlap. For synchronization purposes the last | |
| 1657 // element on the list points to itself. | |
| 1658 HeapRegion* _dirty_cards_region_list; | |
| 1659 void push_dirty_cards_region(HeapRegion* hr); | |
| 1660 HeapRegion* pop_dirty_cards_region(); | |
| 1661 | |
| 1662 // Optimized nmethod scanning support routines | |
| 1663 | |
| 1664 // Register the given nmethod with the G1 heap | |
| 1665 virtual void register_nmethod(nmethod* nm); | |
| 1666 | |
| 1667 // Unregister the given nmethod from the G1 heap | |
| 1668 virtual void unregister_nmethod(nmethod* nm); | |
| 1669 | |
| 1670 // Migrate the nmethods in the code root lists of the regions | |
| 1671 // in the collection set to regions in to-space. In the event | |
| 1672 // of an evacuation failure, nmethods that reference objects | |
| 1673 // that were not successfullly evacuated are not migrated. | |
| 1674 void migrate_strong_code_roots(); | |
| 1675 | |
| 1676 // During an initial mark pause, mark all the code roots that | |
| 1677 // point into regions *not* in the collection set. | |
| 1678 void mark_strong_code_roots(uint worker_id); | |
| 1679 | |
| 1680 // Rebuild the stong code root lists for each region | |
| 1681 // after a full GC | |
| 1682 void rebuild_strong_code_roots(); | |
| 1683 | |
| 1684 // Verification | |
| 1685 | |
| 1686 // The following is just to alert the verification code | |
| 1687 // that a full collection has occurred and that the | |
| 1688 // remembered sets are no longer up to date. | |
| 1689 bool _full_collection; | |
| 1690 void set_full_collection() { _full_collection = true;} | |
| 1691 void clear_full_collection() {_full_collection = false;} | |
| 1692 bool full_collection() {return _full_collection;} | |
| 1693 | |
| 1694 // Perform any cleanup actions necessary before allowing a verification. | |
| 1695 virtual void prepare_for_verify(); | |
| 1696 | |
| 1697 // Perform verification. | |
| 1698 | |
| 1699 // vo == UsePrevMarking -> use "prev" marking information, | |
| 1700 // vo == UseNextMarking -> use "next" marking information | |
| 1701 // vo == UseMarkWord -> use the mark word in the object header | |
| 1702 // | |
| 1703 // NOTE: Only the "prev" marking information is guaranteed to be | |
| 1704 // consistent most of the time, so most calls to this should use | |
| 1705 // vo == UsePrevMarking. | |
| 1706 // Currently, there is only one case where this is called with | |
| 1707 // vo == UseNextMarking, which is to verify the "next" marking | |
| 1708 // information at the end of remark. | |
| 1709 // Currently there is only one place where this is called with | |
| 1710 // vo == UseMarkWord, which is to verify the marking during a | |
| 1711 // full GC. | |
| 1712 void verify(bool silent, VerifyOption vo); | |
| 1713 | |
| 1714 // Override; it uses the "prev" marking information | |
| 1715 virtual void verify(bool silent); | |
| 1716 | |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1717 // 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
|
1718 // appropriate method depending on value of the given VerifyOption |
| 12080 | 1719 // parameter. The values for that parameter, and their meanings, |
| 1720 // are the same as those above. | |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1721 |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1722 bool is_obj_dead_cond(const oop obj, |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1723 const HeapRegion* hr, |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1724 const VerifyOption vo) const { |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1725 switch (vo) { |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1726 case VerifyOption_G1UsePrevMarking: return is_obj_dead(obj, hr); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1727 case VerifyOption_G1UseNextMarking: return is_obj_ill(obj, hr); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1728 case VerifyOption_G1UseMarkWord: return !obj->is_gc_marked(); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1729 default: ShouldNotReachHere(); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1730 } |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1731 return false; // keep some compilers happy |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1732 } |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1733 |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1734 bool is_obj_dead_cond(const oop obj, |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1735 const VerifyOption vo) const { |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1736 switch (vo) { |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1737 case VerifyOption_G1UsePrevMarking: return is_obj_dead(obj); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1738 case VerifyOption_G1UseNextMarking: return is_obj_ill(obj); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1739 case VerifyOption_G1UseMarkWord: return !obj->is_gc_marked(); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1740 default: ShouldNotReachHere(); |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1741 } |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1742 return false; // keep some compilers happy |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1743 } |
|
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1744 |
| 12080 | 1745 // Printing |
|
6254
a2f7274eb6ef
7114678: G1: various small fixes, code cleanup, and refactoring
tonyp
parents:
6197
diff
changeset
|
1746 |
| 12080 | 1747 virtual void print_on(outputStream* st) const; |
| 1748 virtual void print_extended_on(outputStream* st) const; | |
| 1749 virtual void print_on_error(outputStream* st) const; | |
| 342 | 1750 |
| 12080 | 1751 virtual void print_gc_threads_on(outputStream* st) const; |
| 1752 virtual void gc_threads_do(ThreadClosure* tc) const; | |
| 342 | 1753 |
| 12080 | 1754 // Override |
| 1755 void print_tracing_info() const; | |
| 1756 | |
| 1757 // The following two methods are helpful for debugging RSet issues. | |
| 1758 void print_cset_rsets() PRODUCT_RETURN; | |
| 1759 void print_all_rsets() PRODUCT_RETURN; | |
|
796
29e7d79232b9
6819065: G1: eliminate high serial card table clearing time
apetrusenko
parents:
678
diff
changeset
|
1760 |
| 342 | 1761 public: |
| 1762 void stop_conc_gc_threads(); | |
| 1763 | |
| 1764 size_t pending_card_num(); | |
| 1765 size_t cards_scanned(); | |
| 1766 | |
| 1767 protected: | |
| 1768 size_t _max_heap_capacity; | |
| 1769 }; | |
| 1770 | |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1771 class G1ParGCAllocBuffer: public ParGCAllocBuffer { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1772 private: |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1773 bool _retired; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1774 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1775 public: |
|
3886
eeae91c9baba
7080389: G1: refactor marking code in evacuation pause copy closures
johnc
parents:
3867
diff
changeset
|
1776 G1ParGCAllocBuffer(size_t gclab_word_size); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1777 |
|
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
4783
diff
changeset
|
1778 void set_buf(HeapWord* buf) { |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1779 ParGCAllocBuffer::set_buf(buf); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1780 _retired = false; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1781 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1782 |
|
4787
2ace1c4ee8da
6888336: G1: avoid explicitly marking and pushing objects in survivor spaces
tonyp
parents:
4783
diff
changeset
|
1783 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
|
1784 if (_retired) |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1785 return; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1786 ParGCAllocBuffer::retire(end_of_gc, retain); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1787 _retired = true; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1788 } |
|
10374
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1789 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1790 bool is_retired() { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1791 return _retired; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1792 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1793 }; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1794 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1795 class G1ParGCAllocBufferContainer { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1796 protected: |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1797 static int const _priority_max = 2; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1798 G1ParGCAllocBuffer* _priority_buffer[_priority_max]; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1799 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1800 public: |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1801 G1ParGCAllocBufferContainer(size_t gclab_word_size) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1802 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1803 _priority_buffer[pr] = new G1ParGCAllocBuffer(gclab_word_size); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1804 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1805 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1806 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1807 ~G1ParGCAllocBufferContainer() { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1808 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1809 assert(_priority_buffer[pr]->is_retired(), "alloc buffers should all retire at this point."); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1810 delete _priority_buffer[pr]; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1811 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1812 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1813 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1814 HeapWord* allocate(size_t word_sz) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1815 HeapWord* obj; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1816 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1817 obj = _priority_buffer[pr]->allocate(word_sz); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1818 if (obj != NULL) return obj; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1819 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1820 return obj; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1821 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1822 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1823 bool contains(void* addr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1824 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1825 if (_priority_buffer[pr]->contains(addr)) return true; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1826 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1827 return false; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1828 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1829 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1830 void undo_allocation(HeapWord* obj, size_t word_sz) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1831 bool finish_undo; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1832 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1833 if (_priority_buffer[pr]->contains(obj)) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1834 _priority_buffer[pr]->undo_allocation(obj, word_sz); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1835 finish_undo = true; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1836 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1837 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1838 if (!finish_undo) ShouldNotReachHere(); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1839 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1840 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1841 size_t words_remaining() { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1842 size_t result = 0; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1843 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1844 result += _priority_buffer[pr]->words_remaining(); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1845 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1846 return result; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1847 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1848 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1849 size_t words_remaining_in_retired_buffer() { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1850 G1ParGCAllocBuffer* retired = _priority_buffer[0]; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1851 return retired->words_remaining(); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1852 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1853 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1854 void flush_stats_and_retire(PLABStats* stats, bool end_of_gc, bool retain) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1855 for (int pr = 0; pr < _priority_max; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1856 _priority_buffer[pr]->flush_stats_and_retire(stats, end_of_gc, retain); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1857 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1858 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1859 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1860 void update(bool end_of_gc, bool retain, HeapWord* buf, size_t word_sz) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1861 G1ParGCAllocBuffer* retired_and_set = _priority_buffer[0]; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1862 retired_and_set->retire(end_of_gc, retain); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1863 retired_and_set->set_buf(buf); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1864 retired_and_set->set_word_size(word_sz); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1865 adjust_priority_order(); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1866 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1867 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1868 private: |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1869 void adjust_priority_order() { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1870 G1ParGCAllocBuffer* retired_and_set = _priority_buffer[0]; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1871 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1872 int last = _priority_max - 1; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1873 for (int pr = 0; pr < last; ++pr) { |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1874 _priority_buffer[pr] = _priority_buffer[pr + 1]; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1875 } |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1876 _priority_buffer[last] = retired_and_set; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1877 } |
|
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 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1880 class G1ParScanThreadState : public StackObj { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1881 protected: |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1882 G1CollectedHeap* _g1h; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1883 RefToScanQueue* _refs; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1884 DirtyCardQueue _dcq; |
| 12343 | 1885 G1SATBCardTableModRefBS* _ct_bs; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1886 G1RemSet* _g1_rem; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1887 |
|
10374
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1888 G1ParGCAllocBufferContainer _surviving_alloc_buffer; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1889 G1ParGCAllocBufferContainer _tenured_alloc_buffer; |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1890 G1ParGCAllocBufferContainer* _alloc_buffers[GCAllocPurposeCount]; |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
1891 ageTable _age_table; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1892 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1893 size_t _alloc_buffer_waste; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1894 size_t _undo_waste; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1895 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1896 OopsInHeapRegionClosure* _evac_failure_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1897 G1ParScanHeapEvacClosure* _evac_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1898 G1ParScanPartialArrayClosure* _partial_scan_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1899 |
| 10405 | 1900 int _hash_seed; |
|
4836
d30fa85f9994
6484965: G1: piggy-back liveness accounting phase on marking
johnc
parents:
4829
diff
changeset
|
1901 uint _queue_num; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1902 |
| 1611 | 1903 size_t _term_attempts; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1904 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1905 double _start; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1906 double _start_strong_roots; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1907 double _strong_roots_time; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1908 double _start_term; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1909 double _term_time; |
|
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 // 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
|
1912 // 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
|
1913 size_t* _surviving_young_words_base; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1914 // 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
|
1915 size_t* _surviving_young_words; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1916 |
| 1709 | 1917 #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
|
1918 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1919 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
|
1920 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1921 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
|
1922 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1923 DirtyCardQueue& dirty_card_queue() { return _dcq; } |
| 12343 | 1924 G1SATBCardTableModRefBS* ctbs() { return _ct_bs; } |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1925 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1926 template <class T> void immediate_rs_update(HeapRegion* from, T* p, int tid) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1927 if (!from->is_survivor()) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1928 _g1_rem->par_write_ref(from, p, tid); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1929 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1930 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1931 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1932 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
|
1933 // 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
|
1934 // 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
|
1935 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
|
1936 size_t card_index = ctbs()->index_for(p); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1937 // 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
|
1938 if (ctbs()->mark_card_deferred(card_index)) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1939 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
|
1940 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1941 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1942 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1943 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1944 public: |
|
4836
d30fa85f9994
6484965: G1: piggy-back liveness accounting phase on marking
johnc
parents:
4829
diff
changeset
|
1945 G1ParScanThreadState(G1CollectedHeap* g1h, uint queue_num); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1946 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1947 ~G1ParScanThreadState() { |
| 6197 | 1948 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
|
1949 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1950 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1951 RefToScanQueue* refs() { return _refs; } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1952 ageTable* age_table() { return &_age_table; } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1953 |
|
10374
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1954 G1ParGCAllocBufferContainer* alloc_buffer(GCAllocPurpose purpose) { |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
1955 return _alloc_buffers[purpose]; |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1956 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1957 |
| 1709 | 1958 size_t alloc_buffer_waste() const { return _alloc_buffer_waste; } |
| 1959 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
|
1960 |
|
1862
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1961 #ifdef ASSERT |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1962 bool verify_ref(narrowOop* ref) const; |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1963 bool verify_ref(oop* ref) const; |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1964 bool verify_task(StarTask ref) const; |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1965 #endif // ASSERT |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1966 |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1967 template <class T> void push_on_queue(T* ref) { |
|
1862
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
1968 assert(verify_ref(ref), "sanity"); |
| 1709 | 1969 refs()->push(ref); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1970 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1971 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1972 template <class T> void update_rs(HeapRegion* from, T* p, int tid) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1973 if (G1DeferredRSUpdate) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1974 deferred_rs_update(from, p, tid); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1975 } else { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1976 immediate_rs_update(from, p, tid); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1977 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1978 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1979 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1980 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
|
1981 HeapWord* obj = NULL; |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
1982 size_t gclab_word_size = _g1h->desired_plab_sz(purpose); |
|
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
1983 if (word_sz * 100 < gclab_word_size * ParallelGCBufferWastePct) { |
|
10374
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1984 G1ParGCAllocBufferContainer* alloc_buf = alloc_buffer(purpose); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1985 |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
1986 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
|
1987 if (buf == NULL) return NULL; // Let caller handle allocation failure. |
|
10374
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1988 |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1989 add_to_alloc_buffer_waste(alloc_buf->words_remaining_in_retired_buffer()); |
|
87c64c0438fb
6976350: G1: deal with fragmentation while copying objects during GC
tamao
parents:
10327
diff
changeset
|
1990 alloc_buf->update(false /* end_of_gc */, false /* retain */, buf, gclab_word_size); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1991 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1992 obj = alloc_buf->allocate(word_sz); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1993 assert(obj != NULL, "buffer was definitely big enough..."); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1994 } else { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1995 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
|
1996 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1997 return obj; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1998 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
1999 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2000 HeapWord* allocate(GCAllocPurpose purpose, size_t word_sz) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2001 HeapWord* obj = alloc_buffer(purpose)->allocate(word_sz); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2002 if (obj != NULL) return obj; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2003 return allocate_slow(purpose, word_sz); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2004 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2005 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2006 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
|
2007 if (alloc_buffer(purpose)->contains(obj)) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2008 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
|
2009 "should contain whole object"); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2010 alloc_buffer(purpose)->undo_allocation(obj, word_sz); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2011 } else { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2012 CollectedHeap::fill_with_object(obj, word_sz); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2013 add_to_undo_waste(word_sz); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2014 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2015 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2016 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2017 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
|
2018 _evac_failure_cl = evac_failure_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2019 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2020 OopsInHeapRegionClosure* evac_failure_closure() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2021 return _evac_failure_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2022 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2023 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2024 void set_evac_closure(G1ParScanHeapEvacClosure* evac_cl) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2025 _evac_cl = evac_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2026 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2027 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2028 void set_partial_scan_closure(G1ParScanPartialArrayClosure* partial_scan_cl) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2029 _partial_scan_cl = partial_scan_cl; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2030 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2031 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2032 int* hash_seed() { return &_hash_seed; } |
|
4836
d30fa85f9994
6484965: G1: piggy-back liveness accounting phase on marking
johnc
parents:
4829
diff
changeset
|
2033 uint queue_num() { return _queue_num; } |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2034 |
| 1709 | 2035 size_t term_attempts() const { return _term_attempts; } |
| 1611 | 2036 void note_term_attempt() { _term_attempts++; } |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2037 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2038 void start_strong_roots() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2039 _start_strong_roots = os::elapsedTime(); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2040 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2041 void end_strong_roots() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2042 _strong_roots_time += (os::elapsedTime() - _start_strong_roots); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2043 } |
| 1709 | 2044 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
|
2045 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2046 void start_term_time() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2047 note_term_attempt(); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2048 _start_term = os::elapsedTime(); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2049 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2050 void end_term_time() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2051 _term_time += (os::elapsedTime() - _start_term); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2052 } |
| 1709 | 2053 double term_time() const { return _term_time; } |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2054 |
| 1709 | 2055 double elapsed_time() const { |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2056 return os::elapsedTime() - _start; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2057 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2058 |
| 1709 | 2059 static void |
| 2060 print_termination_stats_hdr(outputStream* const st = gclog_or_tty); | |
| 2061 void | |
| 2062 print_termination_stats(int i, outputStream* const st = gclog_or_tty) const; | |
| 2063 | |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2064 size_t* surviving_young_words() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2065 // 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
|
2066 // age -1 regions (i.e. non-young ones) |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2067 return _surviving_young_words; |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2068 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2069 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2070 void retire_alloc_buffers() { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2071 for (int ap = 0; ap < GCAllocPurposeCount; ++ap) { |
|
1391
79e419e5ea3b
6942253: G1: replace G1ParallelGCAllocBufferSize with YoungPLABSize and OldPLABSize
apetrusenko
parents:
1313
diff
changeset
|
2072 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
|
2073 add_to_alloc_buffer_waste(waste); |
| 6595 | 2074 _alloc_buffers[ap]->flush_stats_and_retire(_g1h->stats_for_purpose((GCAllocPurpose)ap), |
| 2075 true /* end_of_gc */, | |
| 2076 false /* retain */); | |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2077 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2078 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2079 |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2080 template <class T> void deal_with_reference(T* ref_to_scan) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2081 if (has_partial_array_mask(ref_to_scan)) { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2082 _partial_scan_cl->do_oop_nv(ref_to_scan); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2083 } else { |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2084 // Note: we can use "raw" versions of "region_containing" because |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2085 // "obj_to_scan" is definitely in the heap, and is not in a |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2086 // humongous region. |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2087 HeapRegion* r = _g1h->heap_region_containing_raw(ref_to_scan); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2088 _evac_cl->set_region(r); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2089 _evac_cl->do_oop_nv(ref_to_scan); |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2090 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2091 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2092 |
|
1862
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2093 void deal_with_reference(StarTask ref) { |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2094 assert(verify_task(ref), "sanity"); |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2095 if (ref.is_narrow()) { |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2096 deal_with_reference((narrowOop*)ref); |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2097 } else { |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2098 deal_with_reference((oop*)ref); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2099 } |
|
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2100 } |
|
1862
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2101 |
|
b14ec34b1e07
6989448: G1: refactor and simplify G1ParScanThreadState
jcoomes
parents:
1836
diff
changeset
|
2102 void trim_queue(); |
|
845
df6caf649ff7
6700789: G1: Enable use of compressed oops with G1 heaps
ysr
parents:
838
diff
changeset
|
2103 }; |
| 1972 | 2104 |
| 2105 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_HPP |