Mercurial > hg > truffle
annotate src/share/vm/memory/blockOffsetTable.inline.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f95d63e2154a |
| children |
| rev | line source |
|---|---|
| 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 |