Mercurial > hg > graal-compiler
annotate src/share/vm/gc_implementation/g1/heapRegionSeq.inline.hpp @ 2434:c84ee870e0b9
7033292: G1: nightly failure: Non-dirty cards in region that should be dirty
Summary: The epochs on the card cache array are initialized to 0 and our initial epoch also starts at 0. So, until the first GC, it might be possible to successfully "claim" a card which was in fact never initialized.
Reviewed-by: johnc, iveresov, ysr
author | tonyp |
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date | Mon, 04 Apr 2011 13:18:35 -0400 |
parents | f95d63e2154a |
children | c3f1170908be |
rev | line source |
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342 | 1 /* |
1972 | 2 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved. |
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4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
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8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
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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). | |
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15 * You should have received a copy of the GNU General Public License version | |
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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_HEAPREGIONSEQ_INLINE_HPP |
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP | |
27 | |
28 #include "gc_implementation/g1/heapRegionSeq.hpp" | |
29 | |
342 | 30 inline HeapRegion* HeapRegionSeq::addr_to_region(const void* addr) { |
31 assert(_seq_bottom != NULL, "bad _seq_bottom in addr_to_region"); | |
32 if ((char*) addr >= _seq_bottom) { | |
33 size_t diff = (size_t) pointer_delta((HeapWord*) addr, | |
34 (HeapWord*) _seq_bottom); | |
35 int index = (int) (diff >> HeapRegion::LogOfHRGrainWords); | |
36 assert(index >= 0, "invariant / paranoia"); | |
37 if (index < _regions.length()) { | |
38 HeapRegion* hr = _regions.at(index); | |
39 assert(hr->is_in_reserved(addr), | |
40 "addr_to_region is wrong..."); | |
41 return hr; | |
42 } | |
43 } | |
44 return NULL; | |
45 } | |
1972 | 46 |
47 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_HEAPREGIONSEQ_INLINE_HPP |