Mercurial > hg > graal-compiler
annotate src/share/vm/memory/blockOffsetTable.inline.hpp @ 1846:d55217dc206f
6829194: JSR 292 needs to support compressed oops
Reviewed-by: kvn, jrose
author | twisti |
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date | Mon, 11 Oct 2010 04:18:58 -0700 |
parents | be3f9c242c9d |
children | f95d63e2154a |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2010, 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 | |
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7 * published by the Free Software Foundation. | |
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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 | |
25 ////////////////////////////////////////////////////////////////////////// | |
26 // BlockOffsetTable inlines | |
27 ////////////////////////////////////////////////////////////////////////// | |
28 inline HeapWord* BlockOffsetTable::block_start(const void* addr) const { | |
29 if (addr >= _bottom && addr < _end) { | |
30 return block_start_unsafe(addr); | |
31 } else { | |
32 return NULL; | |
33 } | |
34 } | |
35 | |
36 ////////////////////////////////////////////////////////////////////////// | |
37 // BlockOffsetSharedArray inlines | |
38 ////////////////////////////////////////////////////////////////////////// | |
39 inline size_t BlockOffsetSharedArray::index_for(const void* p) const { | |
40 char* pc = (char*)p; | |
41 assert(pc >= (char*)_reserved.start() && | |
42 pc < (char*)_reserved.end(), | |
43 "p not in range."); | |
44 size_t delta = pointer_delta(pc, _reserved.start(), sizeof(char)); | |
45 size_t result = delta >> LogN; | |
46 assert(result < _vs.committed_size(), "bad index from address"); | |
47 return result; | |
48 } | |
49 | |
50 inline HeapWord* BlockOffsetSharedArray::address_for_index(size_t index) const { | |
51 assert(index < _vs.committed_size(), "bad index"); | |
52 HeapWord* result = _reserved.start() + (index << LogN_words); | |
53 assert(result >= _reserved.start() && result < _reserved.end(), | |
54 "bad address from index"); | |
55 return result; | |
56 } | |
57 | |
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58 inline void BlockOffsetSharedArray::check_reducing_assertion(bool reducing) { |
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59 assert(reducing || !SafepointSynchronize::is_at_safepoint() || init_to_zero() || |
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60 Thread::current()->is_VM_thread() || |
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61 Thread::current()->is_ConcurrentGC_thread() || |
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62 ((!Thread::current()->is_ConcurrentGC_thread()) && |
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63 ParGCRareEvent_lock->owned_by_self()), "Crack"); |
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64 } |
0 | 65 |
66 ////////////////////////////////////////////////////////////////////////// | |
67 // BlockOffsetArrayNonContigSpace inlines | |
68 ////////////////////////////////////////////////////////////////////////// | |
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69 inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk, |
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70 size_t size) { |
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71 freed(blk, blk + size); |
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72 } |
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73 |
0 | 74 inline void BlockOffsetArrayNonContigSpace::freed(HeapWord* blk_start, |
75 HeapWord* blk_end) { | |
76 // Verify that the BOT shows [blk_start, blk_end) to be one block. | |
77 verify_single_block(blk_start, blk_end); | |
78 // adjust _unallocated_block upward or downward | |
79 // as appropriate | |
80 if (BlockOffsetArrayUseUnallocatedBlock) { | |
81 assert(_unallocated_block <= _end, | |
82 "Inconsistent value for _unallocated_block"); | |
83 if (blk_end >= _unallocated_block && blk_start <= _unallocated_block) { | |
84 // CMS-specific note: a block abutting _unallocated_block to | |
85 // its left is being freed, a new block is being added or | |
86 // we are resetting following a compaction | |
87 _unallocated_block = blk_start; | |
88 } | |
89 } | |
90 } |