Mercurial > hg > truffle

annotate src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp @ 12343:d55c004e1d4d

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
8025305: Cleanup CardTableModRefBS usage in G1 Summary: Move some G1 specific code from CardTableModRefBS to G1SATBCardTableModRefBS. Reviewed-by: brutisso, tschatzl, ehelin
author mgerdin
date Tue, 24 Sep 2013 14:46:29 +0200
parents 2e093b564241
children cefad50507d8 69944b868a32
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
1 /*
6629
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
2 * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
4 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
5 * This code is free software; you can redistribute it and/or modify it
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
6 * under the terms of the GNU General Public License version 2 only, as
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
7 * published by the Free Software Foundation.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
8 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
9 * This code is distributed in the hope that it will be useful, but WITHOUT
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
12 * version 2 for more details (a copy is included in the LICENSE file that
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
13 * accompanied this code).
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
14 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
15 * You should have received a copy of the GNU General Public License version
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
16 * 2 along with this work; if not, write to the Free Software Foundation,
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
18 *
1552
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 752
diff changeset
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
c18cbe5936b8 6941466: Oracle rebranding changes for Hotspot repositories
trims
parents: 752
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: 752
diff changeset
21 * questions.
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
22 *
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
23 */
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
24
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
27
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
28 #include "gc_implementation/g1/concurrentMark.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
29 #include "gc_implementation/g1/g1CollectedHeap.hpp"
2433
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
30 #include "gc_implementation/g1/g1AllocRegion.inline.hpp"
1973
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
31 #include "gc_implementation/g1/g1CollectorPolicy.hpp"
2149
7e37af9d69ef 7011379: G1: overly long concurrent marking cycles
tonyp
parents: 2134
diff changeset
32 #include "gc_implementation/g1/heapRegionSeq.inline.hpp"
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
33 #include "utilities/taskqueue.hpp"
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
34
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
35 // Inline functions for G1CollectedHeap
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
36
3766
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
37 template <class T>
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
38 inline HeapRegion*
3766
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
39 G1CollectedHeap::heap_region_containing(const T addr) const {
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
40 HeapRegion* hr = _hrs.addr_to_region((HeapWord*) addr);
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
41 // hr can be null if addr in perm_gen
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
42 if (hr != NULL && hr->continuesHumongous()) {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
43 hr = hr->humongous_start_region();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
44 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
45 return hr;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
46 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
47
3766
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
48 template <class T>
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
49 inline HeapRegion*
3766
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
50 G1CollectedHeap::heap_region_containing_raw(const T addr) const {
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
51 assert(_g1_reserved.contains((const void*) addr), "invariant");
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
52 HeapRegion* res = _hrs.addr_to_region_unsafe((HeapWord*) addr);
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
53 return res;
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
54 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
55
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
56 inline bool G1CollectedHeap::obj_in_cs(oop obj) {
3766
c3f1170908be 7045330: G1: Simplify/fix the HeapRegionSeq class
tonyp
parents: 2433
diff changeset
57 HeapRegion* r = _hrs.addr_to_region((HeapWord*) obj);
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
58 return r != NULL && r->in_collection_set();
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
59 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
60
1973
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
61 inline HeapWord*
2433
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
62 G1CollectedHeap::attempt_allocation(size_t word_size,
8853
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents: 6629
diff changeset
63 unsigned int* gc_count_before_ret,
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents: 6629
diff changeset
64 int* gclocker_retry_count_ret) {
2134
b158bed62ef5 6994297: G1: do first-level slow-path allocations with a CAS
tonyp
parents: 1991
diff changeset
65 assert_heap_not_locked_and_not_at_safepoint();
2433
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
66 assert(!isHumongous(word_size), "attempt_allocation() should not "
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
67 "be called for humongous allocation requests");
1973
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
68
2433
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
69 HeapWord* result = _mutator_alloc_region.attempt_allocation(word_size,
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
70 false /* bot_updates */);
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
71 if (result == NULL) {
8853
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents: 6629
diff changeset
72 result = attempt_allocation_slow(word_size,
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents: 6629
diff changeset
73 gc_count_before_ret,
2e093b564241 7014552: gc/lock/jni/jnilockXXX works too slow on 1-processor machine
mgerdin
parents: 6629
diff changeset
74 gclocker_retry_count_ret);
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
75 }
2433
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
76 assert_heap_not_locked();
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
77 if (result != NULL) {
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
78 dirty_young_block(result, word_size);
2134
b158bed62ef5 6994297: G1: do first-level slow-path allocations with a CAS
tonyp
parents: 1991
diff changeset
79 }
2433
abdfc822206f 7023069: G1: Introduce symmetric locking in the slow allocation path
tonyp
parents: 2152
diff changeset
80 return result;
2134
b158bed62ef5 6994297: G1: do first-level slow-path allocations with a CAS
tonyp
parents: 1991
diff changeset
81 }
b158bed62ef5 6994297: G1: do first-level slow-path allocations with a CAS
tonyp
parents: 1991
diff changeset
82
3830
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
83 inline HeapWord* G1CollectedHeap::survivor_attempt_allocation(size_t
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
84 word_size) {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
85 assert(!isHumongous(word_size),
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
86 "we should not be seeing humongous-size allocations in this path");
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
87
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
88 HeapWord* result = _survivor_gc_alloc_region.attempt_allocation(word_size,
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
89 false /* bot_updates */);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
90 if (result == NULL) {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
91 MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
92 result = _survivor_gc_alloc_region.attempt_allocation_locked(word_size,
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
93 false /* bot_updates */);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
94 }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
95 if (result != NULL) {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
96 dirty_young_block(result, word_size);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
97 }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
98 return result;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
99 }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
100
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
101 inline HeapWord* G1CollectedHeap::old_attempt_allocation(size_t word_size) {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
102 assert(!isHumongous(word_size),
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
103 "we should not be seeing humongous-size allocations in this path");
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
104
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
105 HeapWord* result = _old_gc_alloc_region.attempt_allocation(word_size,
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
106 true /* bot_updates */);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
107 if (result == NULL) {
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
108 MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
109 result = _old_gc_alloc_region.attempt_allocation_locked(word_size,
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
110 true /* bot_updates */);
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
111 }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
112 return result;
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
113 }
f44782f04dd4 7039627: G1: avoid BOT updates for survivor allocations and dirty survivor regions incrementally
tonyp
parents: 3766
diff changeset
114
1973
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
115 // It dirties the cards that cover the block so that so that the post
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
116 // write barrier never queues anything when updating objects on this
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
117 // block. It is assumed (and in fact we assert) that the block
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
118 // belongs to a young region.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
119 inline void
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
120 G1CollectedHeap::dirty_young_block(HeapWord* start, size_t word_size) {
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
121 assert_heap_not_locked();
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
122
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
123 // Assign the containing region to containing_hr so that we don't
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
124 // have to keep calling heap_region_containing_raw() in the
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
125 // asserts below.
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
126 DEBUG_ONLY(HeapRegion* containing_hr = heap_region_containing_raw(start);)
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
127 assert(containing_hr != NULL && start != NULL && word_size > 0,
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
128 "pre-condition");
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
129 assert(containing_hr->is_in(start), "it should contain start");
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
130 assert(containing_hr->is_young(), "it should be young");
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
131 assert(!containing_hr->isHumongous(), "it should not be humongous");
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
132
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
133 HeapWord* end = start + word_size;
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
134 assert(containing_hr->is_in(end - 1), "it should also contain end - 1");
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
135
631f79e71e90 6974966: G1: unnecessary direct-to-old allocations
tonyp
parents: 1972
diff changeset
136 MemRegion mr(start, end);
12343
d55c004e1d4d 8025305: Cleanup CardTableModRefBS usage in G1
mgerdin
parents: 8853
diff changeset
137 g1_barrier_set()->dirty(mr);
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
138 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
139
1709
5f429ee79634 6966222: G1: simplify TaskQueue overflow handling
jcoomes
parents: 1552
diff changeset
140 inline RefToScanQueue* G1CollectedHeap::task_queue(int i) const {
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
141 return _task_queues->queue(i);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
142 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
143
6629
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
144 inline bool G1CollectedHeap::isMarkedPrev(oop obj) const {
342
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
145 return _cm->prevMarkBitMap()->isMarked((HeapWord *)obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
146 }
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
147
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
148 inline bool G1CollectedHeap::isMarkedNext(oop obj) const {
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
149 return _cm->nextMarkBitMap()->isMarked((HeapWord *)obj);
37f87013dfd8 6711316: Open source the Garbage-First garbage collector
ysr
parents:
diff changeset
150 }
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
151
6629
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
152 #ifndef PRODUCT
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
153 // Support for G1EvacuationFailureALot
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
154
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
155 inline bool
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
156 G1CollectedHeap::evacuation_failure_alot_for_gc_type(bool gcs_are_young,
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
157 bool during_initial_mark,
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
158 bool during_marking) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
159 bool res = false;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
160 if (during_marking) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
161 res |= G1EvacuationFailureALotDuringConcMark;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
162 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
163 if (during_initial_mark) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
164 res |= G1EvacuationFailureALotDuringInitialMark;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
165 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
166 if (gcs_are_young) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
167 res |= G1EvacuationFailureALotDuringYoungGC;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
168 } else {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
169 // GCs are mixed
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
170 res |= G1EvacuationFailureALotDuringMixedGC;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
171 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
172 return res;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
173 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
174
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
175 inline void
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
176 G1CollectedHeap::set_evacuation_failure_alot_for_current_gc() {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
177 if (G1EvacuationFailureALot) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
178 // Note we can't assert that _evacuation_failure_alot_for_current_gc
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
179 // is clear here. It may have been set during a previous GC but that GC
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
180 // did not copy enough objects (i.e. G1EvacuationFailureALotCount) to
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
181 // trigger an evacuation failure and clear the flags and and counts.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
182
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
183 // Check if we have gone over the interval.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
184 const size_t gc_num = total_collections();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
185 const size_t elapsed_gcs = gc_num - _evacuation_failure_alot_gc_number;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
186
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
187 _evacuation_failure_alot_for_current_gc = (elapsed_gcs >= G1EvacuationFailureALotInterval);
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
188
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
189 // Now check if G1EvacuationFailureALot is enabled for the current GC type.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
190 const bool gcs_are_young = g1_policy()->gcs_are_young();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
191 const bool during_im = g1_policy()->during_initial_mark_pause();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
192 const bool during_marking = mark_in_progress();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
193
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
194 _evacuation_failure_alot_for_current_gc &=
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
195 evacuation_failure_alot_for_gc_type(gcs_are_young,
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
196 during_im,
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
197 during_marking);
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
198 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
199 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
200
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
201 inline bool
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
202 G1CollectedHeap::evacuation_should_fail() {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
203 if (!G1EvacuationFailureALot || !_evacuation_failure_alot_for_current_gc) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
204 return false;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
205 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
206 // G1EvacuationFailureALot is in effect for current GC
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
207 // Access to _evacuation_failure_alot_count is not atomic;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
208 // the value does not have to be exact.
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
209 if (++_evacuation_failure_alot_count < G1EvacuationFailureALotCount) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
210 return false;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
211 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
212 _evacuation_failure_alot_count = 0;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
213 return true;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
214 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
215
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
216 inline void G1CollectedHeap::reset_evacuation_should_fail() {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
217 if (G1EvacuationFailureALot) {
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
218 _evacuation_failure_alot_gc_number = total_collections();
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
219 _evacuation_failure_alot_count = 0;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
220 _evacuation_failure_alot_for_current_gc = false;
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
221 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
222 }
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
223 #endif // #ifndef PRODUCT
c9814fadeb38 7041879: G1: introduce stress testing parameter to cause frequent evacuation failures
johnc
parents: 3830
diff changeset
224
1972
f95d63e2154a 6989984: Use standard include model for Hospot
stefank
parents: 1718
diff changeset
225 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP