Mercurial > hg > graal-compiler
annotate src/share/vm/oops/klassPS.hpp @ 1711:a6bff45449bc
6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
Summary: volatile store to static variable removed in favour of a volatile store to stack to avoid excessive cache coherency traffic; verified that the volatile store is not elided by any of our current compilers.
Reviewed-by: dholmes, dice, jcoomes, kvn
author | ysr |
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date | Tue, 10 Aug 2010 14:53:35 -0700 |
parents | 9d7a8ab3736b |
children | f95d63e2154a |
rev | line source |
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0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2007, 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 |
c18cbe5936b8
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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 #ifndef KLASS_PS_H | |
25 #define KLASS_PS_H | |
26 | |
27 // Expands to Parallel Scavenge and Parallel Old declarations | |
28 | |
29 #ifndef SERIALGC | |
30 #define PARALLEL_GC_DECLS \ | |
31 virtual void oop_push_contents(PSPromotionManager* pm, oop obj); \ | |
32 /* Parallel Old GC support \ | |
33 \ | |
34 The 2-arg version of oop_update_pointers is for objects that are \ | |
35 known not to cross chunk boundaries. The 4-arg version is for \ | |
36 objects that do (or may) cross chunk boundaries; it updates only those \ | |
37 oops that are in the region [beg_addr, end_addr). */ \ | |
38 virtual void oop_follow_contents(ParCompactionManager* cm, oop obj); \ | |
39 virtual int oop_update_pointers(ParCompactionManager* cm, oop obj); \ | |
40 virtual int oop_update_pointers(ParCompactionManager* cm, oop obj, \ | |
41 HeapWord* beg_addr, HeapWord* end_addr); | |
42 | |
43 // Pure virtual version for klass.hpp | |
44 #define PARALLEL_GC_DECLS_PV \ | |
45 virtual void oop_push_contents(PSPromotionManager* pm, oop obj) = 0; \ | |
46 virtual void oop_follow_contents(ParCompactionManager* cm, oop obj) = 0; \ | |
47 virtual int oop_update_pointers(ParCompactionManager* cm, oop obj) = 0; \ | |
48 virtual int oop_update_pointers(ParCompactionManager* cm, oop obj, \ | |
49 HeapWord* beg_addr, HeapWord* end_addr) = 0; | |
50 #else // SERIALGC | |
51 #define PARALLEL_GC_DECLS | |
52 #define PARALLEL_GC_DECLS_PV | |
53 #endif // SERIALGC | |
54 | |
55 #endif // KLASS_PS_H |