Mercurial > hg > graal-compiler
annotate src/share/vm/prims/jvmtiUtil.cpp @ 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 | c18cbe5936b8 |
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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6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_jvmtiUtil.cpp.incl" | |
27 // | |
28 // class JvmtiUtil | |
29 // | |
30 | |
31 ResourceArea* JvmtiUtil::_single_threaded_resource_area = NULL; | |
32 | |
33 ResourceArea* JvmtiUtil::single_threaded_resource_area() { | |
34 if (_single_threaded_resource_area == NULL) { | |
35 // lazily create the single threaded resource area | |
36 // pick a size which is not a standard since the pools don't exist yet | |
37 _single_threaded_resource_area = new ResourceArea(Chunk::non_pool_size); | |
38 } | |
39 return _single_threaded_resource_area; | |
40 } |