Mercurial > hg > truffle
annotate src/share/vm/oops/typeArrayKlassKlass.hpp @ 3746:537a4053b0f9
7042740: CMS: assert(n> q) failed: Looping at: ... blockOffsetTable.cpp:557
Summary: Do a one-step look-ahead, when sweeping free or garbage blocks, to avoid overstepping sweep limit, which may become a non-block-boundary because of a heap expansion delta coalescing with a previously co-terminal free block.
Reviewed-by: brutisso, tonyp
author | ysr |
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date | Mon, 23 May 2011 16:42:14 -0700 |
parents | f95d63e2154a |
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0 | 1 /* |
1972 | 2 * Copyright (c) 1997, 2010, 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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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 | |
1972 | 25 #ifndef SHARE_VM_OOPS_TYPEARRAYKLASSKLASS_HPP |
26 #define SHARE_VM_OOPS_TYPEARRAYKLASSKLASS_HPP | |
27 | |
28 #include "oops/arrayKlassKlass.hpp" | |
29 #include "oops/typeArrayKlass.hpp" | |
30 | |
0 | 31 // A typeArrayKlassKlass is the klass of a typeArrayKlass |
32 | |
33 class typeArrayKlassKlass : public arrayKlassKlass { | |
34 public: | |
35 // Testing | |
36 bool oop_is_typeArrayKlass() const { return true; } | |
37 | |
38 // Dispatched operation | |
39 int oop_size(oop obj) const { return typeArrayKlass::cast(klassOop(obj))->object_size(); } | |
40 int klass_oop_size() const { return object_size(); } | |
41 | |
42 // Allocation | |
43 DEFINE_ALLOCATE_PERMANENT(typeArrayKlassKlass); | |
44 static klassOop create_klass(TRAPS); | |
45 | |
46 // Casting from klassOop | |
47 static typeArrayKlassKlass* cast(klassOop k) { | |
48 assert(k->klass_part()->oop_is_klass(), "cast to typeArrayKlassKlass"); | |
49 return (typeArrayKlassKlass*) k->klass_part(); | |
50 } | |
51 | |
52 // Sizing | |
53 static int header_size() { return oopDesc::header_size() + sizeof(typeArrayKlassKlass)/HeapWordSize; } | |
54 int object_size() const { return align_object_size(header_size()); } | |
55 | |
56 public: | |
57 // Printing | |
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58 void oop_print_value_on(oop obj, outputStream* st); |
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59 #ifndef PRODUCT |
0 | 60 void oop_print_on(oop obj, outputStream* st); |
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61 #endif //PRODUCT |
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62 |
0 | 63 const char* internal_name() const; |
64 }; | |
1972 | 65 |
66 #endif // SHARE_VM_OOPS_TYPEARRAYKLASSKLASS_HPP |