Mercurial > hg > truffle
annotate src/share/vm/gc_implementation/g1/g1CollectedHeap.inline.hpp @ 1836:894b1d7c7e01
6423256: GC stacks should use a better data structure
6942771: SEGV in ParScanThreadState::take_from_overflow_stack
Reviewed-by: apetrusenko, ysr, pbk
author | jcoomes |
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date | Tue, 28 Sep 2010 15:56:15 -0700 |
parents | bb847e31b836 |
children | f95d63e2154a |
rev | line source |
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342 | 1 /* |
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2 * Copyright (c) 2001, 2009, 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 | |
25 // Inline functions for G1CollectedHeap | |
26 | |
27 inline HeapRegion* | |
28 G1CollectedHeap::heap_region_containing(const void* addr) const { | |
29 HeapRegion* hr = _hrs->addr_to_region(addr); | |
30 // hr can be null if addr in perm_gen | |
31 if (hr != NULL && hr->continuesHumongous()) { | |
32 hr = hr->humongous_start_region(); | |
33 } | |
34 return hr; | |
35 } | |
36 | |
37 inline HeapRegion* | |
38 G1CollectedHeap::heap_region_containing_raw(const void* addr) const { | |
526 | 39 assert(_g1_reserved.contains(addr), "invariant"); |
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40 size_t index = pointer_delta(addr, _g1_reserved.start(), 1) |
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41 >> HeapRegion::LogOfHRGrainBytes; |
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42 |
526 | 43 HeapRegion* res = _hrs->at(index); |
44 assert(res == _hrs->addr_to_region(addr), "sanity"); | |
342 | 45 return res; |
46 } | |
47 | |
48 inline bool G1CollectedHeap::obj_in_cs(oop obj) { | |
49 HeapRegion* r = _hrs->addr_to_region(obj); | |
50 return r != NULL && r->in_collection_set(); | |
51 } | |
52 | |
53 inline HeapWord* G1CollectedHeap::attempt_allocation(size_t word_size, | |
54 bool permit_collection_pause) { | |
55 HeapWord* res = NULL; | |
56 | |
57 assert( SafepointSynchronize::is_at_safepoint() || | |
58 Heap_lock->owned_by_self(), "pre-condition of the call" ); | |
59 | |
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60 // All humongous allocation requests should go through the slow path in |
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61 // attempt_allocation_slow(). |
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62 if (!isHumongous(word_size) && _cur_alloc_region != NULL) { |
342 | 63 // If this allocation causes a region to become non empty, |
64 // then we need to update our free_regions count. | |
65 | |
66 if (_cur_alloc_region->is_empty()) { | |
67 res = _cur_alloc_region->allocate(word_size); | |
68 if (res != NULL) | |
69 _free_regions--; | |
70 } else { | |
71 res = _cur_alloc_region->allocate(word_size); | |
72 } | |
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73 |
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74 if (res != NULL) { |
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75 if (!SafepointSynchronize::is_at_safepoint()) { |
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76 assert( Heap_lock->owned_by_self(), "invariant" ); |
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77 Heap_lock->unlock(); |
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78 } |
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79 return res; |
342 | 80 } |
81 } | |
82 // attempt_allocation_slow will also unlock the heap lock when appropriate. | |
83 return attempt_allocation_slow(word_size, permit_collection_pause); | |
84 } | |
85 | |
1709 | 86 inline RefToScanQueue* G1CollectedHeap::task_queue(int i) const { |
342 | 87 return _task_queues->queue(i); |
88 } | |
89 | |
90 inline bool G1CollectedHeap::isMarkedPrev(oop obj) const { | |
91 return _cm->prevMarkBitMap()->isMarked((HeapWord *)obj); | |
92 } | |
93 | |
94 inline bool G1CollectedHeap::isMarkedNext(oop obj) const { | |
95 return _cm->nextMarkBitMap()->isMarked((HeapWord *)obj); | |
96 } |