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annotate src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp @ 4832:a8a126788ea0
7078465: G1: Don't use the undefined value (-1) for the G1 old memory pool max size
Reviewed-by: johnc, brutisso
author | tonyp |
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date | Thu, 19 Jan 2012 09:13:58 -0500 |
parents | f44782f04dd4 |
children | c9814fadeb38 |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2011, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
342 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP | |
27 | |
28 #include "gc_implementation/g1/concurrentMark.hpp" | |
29 #include "gc_implementation/g1/g1CollectedHeap.hpp" | |
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30 #include "gc_implementation/g1/g1AllocRegion.inline.hpp" |
1973 | 31 #include "gc_implementation/g1/g1CollectorPolicy.hpp" |
2149 | 32 #include "gc_implementation/g1/heapRegionSeq.inline.hpp" |
1972 | 33 #include "utilities/taskqueue.hpp" |
34 | |
342 | 35 // Inline functions for G1CollectedHeap |
36 | |
3766 | 37 template <class T> |
342 | 38 inline HeapRegion* |
3766 | 39 G1CollectedHeap::heap_region_containing(const T addr) const { |
40 HeapRegion* hr = _hrs.addr_to_region((HeapWord*) addr); | |
342 | 41 // hr can be null if addr in perm_gen |
42 if (hr != NULL && hr->continuesHumongous()) { | |
43 hr = hr->humongous_start_region(); | |
44 } | |
45 return hr; | |
46 } | |
47 | |
3766 | 48 template <class T> |
342 | 49 inline HeapRegion* |
3766 | 50 G1CollectedHeap::heap_region_containing_raw(const T addr) const { |
51 assert(_g1_reserved.contains((const void*) addr), "invariant"); | |
52 HeapRegion* res = _hrs.addr_to_region_unsafe((HeapWord*) addr); | |
342 | 53 return res; |
54 } | |
55 | |
56 inline bool G1CollectedHeap::obj_in_cs(oop obj) { | |
3766 | 57 HeapRegion* r = _hrs.addr_to_region((HeapWord*) obj); |
342 | 58 return r != NULL && r->in_collection_set(); |
59 } | |
60 | |
1973 | 61 inline HeapWord* |
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62 G1CollectedHeap::attempt_allocation(size_t word_size, |
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63 unsigned int* gc_count_before_ret) { |
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64 assert_heap_not_locked_and_not_at_safepoint(); |
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65 assert(!isHumongous(word_size), "attempt_allocation() should not " |
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66 "be called for humongous allocation requests"); |
1973 | 67 |
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68 HeapWord* result = _mutator_alloc_region.attempt_allocation(word_size, |
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69 false /* bot_updates */); |
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70 if (result == NULL) { |
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71 result = attempt_allocation_slow(word_size, gc_count_before_ret); |
342 | 72 } |
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73 assert_heap_not_locked(); |
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74 if (result != NULL) { |
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75 dirty_young_block(result, word_size); |
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76 } |
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77 return result; |
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78 } |
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79 |
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80 inline HeapWord* G1CollectedHeap::survivor_attempt_allocation(size_t |
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81 word_size) { |
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82 assert(!isHumongous(word_size), |
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83 "we should not be seeing humongous-size allocations in this path"); |
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84 |
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85 HeapWord* result = _survivor_gc_alloc_region.attempt_allocation(word_size, |
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86 false /* bot_updates */); |
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87 if (result == NULL) { |
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88 MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag); |
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89 result = _survivor_gc_alloc_region.attempt_allocation_locked(word_size, |
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90 false /* bot_updates */); |
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91 } |
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92 if (result != NULL) { |
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93 dirty_young_block(result, word_size); |
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94 } |
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95 return result; |
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96 } |
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97 |
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98 inline HeapWord* G1CollectedHeap::old_attempt_allocation(size_t word_size) { |
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99 assert(!isHumongous(word_size), |
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100 "we should not be seeing humongous-size allocations in this path"); |
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101 |
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102 HeapWord* result = _old_gc_alloc_region.attempt_allocation(word_size, |
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103 true /* bot_updates */); |
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104 if (result == NULL) { |
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105 MutexLockerEx x(FreeList_lock, Mutex::_no_safepoint_check_flag); |
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106 result = _old_gc_alloc_region.attempt_allocation_locked(word_size, |
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107 true /* bot_updates */); |
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108 } |
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109 return result; |
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110 } |
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111 |
1973 | 112 // It dirties the cards that cover the block so that so that the post |
113 // write barrier never queues anything when updating objects on this | |
114 // block. It is assumed (and in fact we assert) that the block | |
115 // belongs to a young region. | |
116 inline void | |
117 G1CollectedHeap::dirty_young_block(HeapWord* start, size_t word_size) { | |
118 assert_heap_not_locked(); | |
119 | |
120 // Assign the containing region to containing_hr so that we don't | |
121 // have to keep calling heap_region_containing_raw() in the | |
122 // asserts below. | |
123 DEBUG_ONLY(HeapRegion* containing_hr = heap_region_containing_raw(start);) | |
124 assert(containing_hr != NULL && start != NULL && word_size > 0, | |
125 "pre-condition"); | |
126 assert(containing_hr->is_in(start), "it should contain start"); | |
127 assert(containing_hr->is_young(), "it should be young"); | |
128 assert(!containing_hr->isHumongous(), "it should not be humongous"); | |
129 | |
130 HeapWord* end = start + word_size; | |
131 assert(containing_hr->is_in(end - 1), "it should also contain end - 1"); | |
132 | |
133 MemRegion mr(start, end); | |
134 ((CardTableModRefBS*)_g1h->barrier_set())->dirty(mr); | |
342 | 135 } |
136 | |
1709 | 137 inline RefToScanQueue* G1CollectedHeap::task_queue(int i) const { |
342 | 138 return _task_queues->queue(i); |
139 } | |
140 | |
141 inline bool G1CollectedHeap::isMarkedPrev(oop obj) const { | |
142 return _cm->prevMarkBitMap()->isMarked((HeapWord *)obj); | |
143 } | |
144 | |
145 inline bool G1CollectedHeap::isMarkedNext(oop obj) const { | |
146 return _cm->nextMarkBitMap()->isMarked((HeapWord *)obj); | |
147 } | |
1972 | 148 |
149 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1COLLECTEDHEAP_INLINE_HPP |