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annotate src/share/vm/memory/space.inline.hpp @ 9202:b6629b739a55
Merge.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Mon, 22 Apr 2013 09:54:57 +0200 |
parents | b9a9ed0f8eeb |
children | c49dcaf78a65 |
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0 | 1 /* |
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7197424: update copyright year to match last edit in jdk8 hotspot repository
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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. |
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5 * This code is free software; you can redistribute it and/or modify it | |
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12 * version 2 for more details (a copy is included in the LICENSE file that | |
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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_SPACE_INLINE_HPP |
26 #define SHARE_VM_MEMORY_SPACE_INLINE_HPP | |
27 | |
28 #include "gc_interface/collectedHeap.hpp" | |
29 #include "memory/space.hpp" | |
30 #include "memory/universe.hpp" | |
31 #include "runtime/safepoint.hpp" | |
32 | |
342 | 33 inline HeapWord* Space::block_start(const void* p) { |
34 return block_start_const(p); | |
35 } | |
36 | |
0 | 37 inline HeapWord* OffsetTableContigSpace::allocate(size_t size) { |
38 HeapWord* res = ContiguousSpace::allocate(size); | |
39 if (res != NULL) { | |
40 _offsets.alloc_block(res, size); | |
41 } | |
42 return res; | |
43 } | |
44 | |
45 // Because of the requirement of keeping "_offsets" up to date with the | |
46 // allocations, we sequentialize these with a lock. Therefore, best if | |
47 // this is used for larger LAB allocations only. | |
48 inline HeapWord* OffsetTableContigSpace::par_allocate(size_t size) { | |
49 MutexLocker x(&_par_alloc_lock); | |
50 // This ought to be just "allocate", because of the lock above, but that | |
51 // ContiguousSpace::allocate asserts that either the allocating thread | |
52 // holds the heap lock or it is the VM thread and we're at a safepoint. | |
53 // The best I (dld) could figure was to put a field in ContiguousSpace | |
54 // meaning "locking at safepoint taken care of", and set/reset that | |
55 // here. But this will do for now, especially in light of the comment | |
56 // above. Perhaps in the future some lock-free manner of keeping the | |
57 // coordination. | |
58 HeapWord* res = ContiguousSpace::par_allocate(size); | |
59 if (res != NULL) { | |
60 _offsets.alloc_block(res, size); | |
61 } | |
62 return res; | |
63 } | |
64 | |
342 | 65 inline HeapWord* |
66 OffsetTableContigSpace::block_start_const(const void* p) const { | |
0 | 67 return _offsets.block_start(p); |
68 } | |
69 | |
1972 | 70 #endif // SHARE_VM_MEMORY_SPACE_INLINE_HPP |