Mercurial > hg > graal-compiler
annotate src/share/vm/oops/arrayKlassKlass.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 | 126ea7725993 |
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) 1997, 2006, Oracle and/or its affiliates. All rights reserved. |
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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
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // arrayKlassKlass is the abstract baseclass for all array class classes | |
26 | |
27 class arrayKlassKlass : public klassKlass { | |
28 public: | |
29 // Testing | |
30 bool oop_is_arrayKlass() const { return true; } | |
31 | |
32 // Allocation | |
33 DEFINE_ALLOCATE_PERMANENT(arrayKlassKlass); | |
34 static klassOop create_klass(TRAPS); | |
35 | |
36 // Casting from klassOop | |
37 static arrayKlassKlass* cast(klassOop k) { | |
38 assert(k->klass_part()->oop_is_klass(), "cast to arrayKlassKlass"); | |
39 return (arrayKlassKlass*) k->klass_part(); | |
40 } | |
41 | |
42 // Sizing | |
43 static int header_size() { return oopDesc::header_size() + sizeof(arrayKlassKlass)/HeapWordSize; } | |
44 int object_size() const { return align_object_size(header_size()); } | |
45 | |
46 // Garbage collection | |
47 void oop_follow_contents(oop obj); | |
48 int oop_adjust_pointers(oop obj); | |
49 bool oop_is_parsable(oop obj) const; | |
50 | |
51 // Parallel Scavenge and Parallel Old | |
52 PARALLEL_GC_DECLS | |
53 | |
54 // Iterators | |
55 int oop_oop_iterate(oop obj, OopClosure* blk); | |
56 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
57 | |
58 public: | |
59 // Printing | |
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6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
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60 void oop_print_value_on(oop obj, outputStream* st); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
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61 #ifndef PRODUCT |
0 | 62 void oop_print_on(oop obj, outputStream* st); |
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63 #endif //PRODUCT |
0 | 64 |
65 // Verification | |
66 const char* internal_name() const; | |
67 void oop_verify_on(oop obj, outputStream* st); | |
68 }; |