Mercurial > hg > graal-compiler
annotate src/share/vm/memory/space.inline.hpp @ 1941:79d04223b8a5
Added caching for resolved types and resolved fields.
This is crucial, because the local load elimination will lead to wrong results, if field equality (of two RiField objects with the same object and the same RiType) is not given. The caching makes sure that the default equals implementation is sufficient.
| author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
|---|---|
| date | Tue, 28 Dec 2010 18:33:26 +0100 |
| parents | c18cbe5936b8 |
| children | f95d63e2154a |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2006, 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 | |
| 342 | 25 inline HeapWord* Space::block_start(const void* p) { |
| 26 return block_start_const(p); | |
| 27 } | |
| 28 | |
| 0 | 29 inline HeapWord* OffsetTableContigSpace::allocate(size_t size) { |
| 30 HeapWord* res = ContiguousSpace::allocate(size); | |
| 31 if (res != NULL) { | |
| 32 _offsets.alloc_block(res, size); | |
| 33 } | |
| 34 return res; | |
| 35 } | |
| 36 | |
| 37 // Because of the requirement of keeping "_offsets" up to date with the | |
| 38 // allocations, we sequentialize these with a lock. Therefore, best if | |
| 39 // this is used for larger LAB allocations only. | |
| 40 inline HeapWord* OffsetTableContigSpace::par_allocate(size_t size) { | |
| 41 MutexLocker x(&_par_alloc_lock); | |
| 42 // This ought to be just "allocate", because of the lock above, but that | |
| 43 // ContiguousSpace::allocate asserts that either the allocating thread | |
| 44 // holds the heap lock or it is the VM thread and we're at a safepoint. | |
| 45 // The best I (dld) could figure was to put a field in ContiguousSpace | |
| 46 // meaning "locking at safepoint taken care of", and set/reset that | |
| 47 // here. But this will do for now, especially in light of the comment | |
| 48 // above. Perhaps in the future some lock-free manner of keeping the | |
| 49 // coordination. | |
| 50 HeapWord* res = ContiguousSpace::par_allocate(size); | |
| 51 if (res != NULL) { | |
| 52 _offsets.alloc_block(res, size); | |
| 53 } | |
| 54 return res; | |
| 55 } | |
| 56 | |
| 342 | 57 inline HeapWord* |
| 58 OffsetTableContigSpace::block_start_const(const void* p) const { | |
| 0 | 59 return _offsets.block_start(p); |
| 60 } | |
| 61 | |
| 62 inline HeapWord* ContiguousSpace::concurrent_iteration_safe_limit() | |
| 63 { | |
| 64 assert(_concurrent_iteration_safe_limit <= top(), | |
| 65 "_concurrent_iteration_safe_limit update missed"); | |
| 66 return _concurrent_iteration_safe_limit; | |
| 67 } | |
| 68 | |
| 69 inline void ContiguousSpace::set_concurrent_iteration_safe_limit(HeapWord* new_limit) | |
| 70 { | |
| 71 assert(new_limit <= top(), "uninitialized objects in the safe range"); | |
| 72 _concurrent_iteration_safe_limit = new_limit; | |
| 73 } |