Mercurial > hg > graal-compiler
annotate src/share/vm/memory/genMarkSweep.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 | 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
6941466: Oracle rebranding changes for Hotspot repositories
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parents:
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20 * or visit www.oracle.com if you need additional information or have any |
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6941466: Oracle rebranding changes for Hotspot repositories
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 class GenMarkSweep : public MarkSweep { | |
26 friend class VM_MarkSweep; | |
342 | 27 friend class G1MarkSweep; |
0 | 28 public: |
29 static void invoke_at_safepoint(int level, ReferenceProcessor* rp, | |
30 bool clear_all_softrefs); | |
31 | |
32 private: | |
33 | |
34 // Mark live objects | |
35 static void mark_sweep_phase1(int level, bool clear_all_softrefs); | |
36 // Calculate new addresses | |
37 static void mark_sweep_phase2(); | |
38 // Update pointers | |
39 static void mark_sweep_phase3(int level); | |
40 // Move objects to new positions | |
41 static void mark_sweep_phase4(); | |
42 | |
43 // Temporary data structures for traversal and storing/restoring marks | |
44 static void allocate_stacks(); | |
45 static void deallocate_stacks(); | |
46 }; |