Mercurial > hg > graal-compiler
annotate src/share/vm/oops/instanceKlassKlass.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 |
---|---|
date | Tue, 10 Aug 2010 14:53:35 -0700 |
parents | c18cbe5936b8 |
children | f95d63e2154a |
rev | line source |
---|---|
0 | 1 /* |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
2 * Copyright (c) 1997, 2009, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 * | |
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1155
diff
changeset
|
21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 // An instanceKlassKlass is the klass of an instanceKlass | |
26 | |
27 class instanceKlassKlass : public klassKlass { | |
28 public: | |
29 // Dispatched operation | |
30 bool oop_is_klass() const { return true; } | |
31 bool oop_is_instanceKlass() const { return true; } | |
32 | |
33 int oop_size(oop obj) const; | |
34 int klass_oop_size() const { return object_size(); } | |
35 | |
36 // Allocation | |
37 DEFINE_ALLOCATE_PERMANENT(instanceKlassKlass); | |
38 static klassOop create_klass(TRAPS); | |
39 klassOop allocate_instance_klass(int vtable_len, | |
40 int itable_len, | |
41 int static_field_size, | |
939
9eebd3ac74cf
6845368: large objects cause a crash or unexpected exception
jcoomes
parents:
938
diff
changeset
|
42 unsigned int nonstatic_oop_map_count, |
0 | 43 ReferenceType rt, |
44 TRAPS); | |
45 | |
46 // Casting from klassOop | |
47 static instanceKlassKlass* cast(klassOop k) { | |
48 assert(k->klass_part()->oop_is_klass(), "cast to instanceKlassKlass"); | |
49 return (instanceKlassKlass*) k->klass_part(); | |
50 } | |
51 | |
52 // Sizing | |
53 static int header_size() { return oopDesc::header_size() + sizeof(instanceKlassKlass)/HeapWordSize; } | |
54 int object_size() const { return align_object_size(header_size()); } | |
55 | |
56 // Garbage collection | |
57 void oop_follow_contents(oop obj); | |
58 int oop_adjust_pointers(oop obj); | |
59 bool oop_is_parsable(oop obj) const; | |
60 | |
61 // Parallel Scavenge and Parallel Old | |
62 PARALLEL_GC_DECLS | |
63 | |
64 // Iterators | |
65 int oop_oop_iterate(oop obj, OopClosure* blk); | |
66 int oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr); | |
67 | |
68 private: | |
69 // Apply closure to the InstanceKlass oops that are outside the java heap. | |
70 inline void iterate_c_heap_oops(instanceKlass* ik, OopClosure* closure); | |
71 | |
72 public: | |
73 // Printing | |
1155
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
948
diff
changeset
|
74 void oop_print_value_on(oop obj, outputStream* st); |
4e6abf09f540
6912062: disassembler plugin needs to produce symbolic information in product mode
jrose
parents:
948
diff
changeset
|
75 #ifndef PRODUCT |
0 | 76 void oop_print_on(oop obj, outputStream* st); |
77 #endif | |
78 | |
79 // Verification | |
80 const char* internal_name() const; | |
81 void oop_verify_on(oop obj, outputStream* st); | |
82 // tells whether obj is partially constructed (gc during class loading) | |
83 bool oop_partially_loaded(oop obj) const; | |
84 void oop_set_partially_loaded(oop obj); | |
85 }; |