Mercurial > hg > truffle
annotate src/share/vm/memory/blockOffsetTable.inline.hpp @ 7179:d0aa87f04bd5
8003720: NPG: Method in interpreter stack frame can be deallocated
Summary: Pass down a closure during root scanning to keep the class of the method alive.
Reviewed-by: coleenp, jcoomes
author | stefank |
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date | Tue, 27 Nov 2012 10:13:20 +0100 |
parents | da91efe96a93 |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef SHARE_VM_MEMORY_BLOCKOFFSETTABLE_INLINE_HPP |
26 #define SHARE_VM_MEMORY_BLOCKOFFSETTABLE_INLINE_HPP | |
27 | |
28 #include "memory/blockOffsetTable.hpp" | |
29 #include "memory/space.hpp" | |
30 #include "runtime/safepoint.hpp" | |
31 | |
0 | 32 ////////////////////////////////////////////////////////////////////////// |
33 // BlockOffsetTable inlines | |
34 ////////////////////////////////////////////////////////////////////////// | |
35 inline HeapWord* BlockOffsetTable::block_start(const void* addr) const { | |
36 if (addr >= _bottom && addr < _end) { | |
37 return block_start_unsafe(addr); | |
38 } else { | |
39 return NULL; | |
40 } | |
41 } | |
42 | |
43 ////////////////////////////////////////////////////////////////////////// | |
44 // BlockOffsetSharedArray inlines | |
45 ////////////////////////////////////////////////////////////////////////// | |
46 inline size_t BlockOffsetSharedArray::index_for(const void* p) const { | |
47 char* pc = (char*)p; | |
48 assert(pc >= (char*)_reserved.start() && | |
49 pc < (char*)_reserved.end(), | |
50 "p not in range."); | |
51 size_t delta = pointer_delta(pc, _reserved.start(), sizeof(char)); | |
52 size_t result = delta >> LogN; | |
53 assert(result < _vs.committed_size(), "bad index from address"); | |
54 return result; | |
55 } | |
56 | |
57 inline HeapWord* BlockOffsetSharedArray::address_for_index(size_t index) const { | |
58 assert(index < _vs.committed_size(), "bad index"); | |
59 HeapWord* result = _reserved.start() + (index << LogN_words); | |
60 assert(result >= _reserved.start() && result < _reserved.end(), | |
61 "bad address from index"); | |
62 return result; | |
63 } | |
64 | |
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65 inline void BlockOffsetSharedArray::check_reducing_assertion(bool reducing) { |
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66 assert(reducing || !SafepointSynchronize::is_at_safepoint() || init_to_zero() || |
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67 Thread::current()->is_VM_thread() || |
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68 Thread::current()->is_ConcurrentGC_thread() || |
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69 ((!Thread::current()->is_ConcurrentGC_thread()) && |
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70 ParGCRareEvent_lock->owned_by_self()), "Crack"); |
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71 } |
0 | 72 |
73 ////////////////////////////////////////////////////////////////////////// | |
74 // BlockOffsetArrayNonContigSpace inlines | |
75 ////////////////////////////////////////////////////////////////////////// | |
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76 inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk, |
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77 size_t size) { |
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78 freed(blk, blk + size); |
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79 } |
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80 |
0 | 81 inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk_start, |
82 HeapWord* blk_end) { | |
83 // Verify that the BOT shows [blk_start, blk_end) to be one block. | |
84 verify_single_block(blk_start, blk_end); | |
85 // adjust _unallocated_block upward or downward | |
86 // as appropriate | |
87 if (BlockOffsetArrayUseUnallocatedBlock) { | |
88 assert(_unallocated_block <= _end, | |
89 "Inconsistent value for _unallocated_block"); | |
90 if (blk_end >= _unallocated_block && blk_start <= _unallocated_block) { | |
91 // CMS-specific note: a block abutting _unallocated_block to | |
92 // its left is being freed, a new block is being added or | |
93 // we are resetting following a compaction | |
94 _unallocated_block = blk_start; | |
95 } | |
96 } | |
97 } | |
1972 | 98 |
99 #endif // SHARE_VM_MEMORY_BLOCKOFFSETTABLE_INLINE_HPP |