Mercurial > hg > graal-compiler
annotate src/share/vm/memory/resourceArea.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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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 | |
25 # include "incls/_precompiled.incl" | |
26 # include "incls/_resourceArea.cpp.incl" | |
27 | |
28 //------------------------------ResourceMark----------------------------------- | |
29 debug_only(int ResourceArea::_warned;) // to suppress multiple warnings | |
30 | |
31 // The following routines are declared in allocation.hpp and used everywhere: | |
32 | |
33 // Allocation in thread-local resource area | |
34 extern char* resource_allocate_bytes(size_t size) { | |
35 return Thread::current()->resource_area()->allocate_bytes(size); | |
36 } | |
37 extern char* resource_allocate_bytes(Thread* thread, size_t size) { | |
38 return thread->resource_area()->allocate_bytes(size); | |
39 } | |
40 | |
41 extern char* resource_reallocate_bytes( char *old, size_t old_size, size_t new_size){ | |
42 return (char*)Thread::current()->resource_area()->Arealloc(old, old_size, new_size); | |
43 } | |
44 | |
45 extern void resource_free_bytes( char *old, size_t size ) { | |
46 Thread::current()->resource_area()->Afree(old, size); | |
47 } | |
48 | |
49 #ifdef ASSERT | |
50 ResourceMark::ResourceMark(Thread *thread) { | |
51 assert(thread == Thread::current(), "not the current thread"); | |
52 initialize(thread); | |
53 } | |
54 | |
55 DeoptResourceMark::DeoptResourceMark(Thread *thread) { | |
56 assert(thread == Thread::current(), "not the current thread"); | |
57 initialize(thread); | |
58 } | |
59 #endif | |
60 | |
61 | |
62 //------------------------------------------------------------------------------- | |
63 // Non-product code | |
64 #ifndef PRODUCT | |
65 | |
66 void ResourceMark::free_malloced_objects() { | |
67 Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm); | |
68 } | |
69 | |
70 void DeoptResourceMark::free_malloced_objects() { | |
71 Arena::free_malloced_objects(_chunk, _hwm, _max, _area->_hwm); | |
72 } | |
73 | |
74 #endif |