Mercurial > hg > graal-compiler
comparison src/share/vm/oops/instanceClassLoaderKlass.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author | coleenp |
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date | Sat, 01 Sep 2012 13:25:18 -0400 |
parents | |
children | aed758eda82a |
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6724:36d1d483d5d6 | 6725:da91efe96a93 |
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1 /* | |
2 * Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved. | |
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 * | |
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
20 * or visit www.oracle.com if you need additional information or have any | |
21 * questions. | |
22 * | |
23 */ | |
24 | |
25 #ifndef SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP | |
26 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP | |
27 | |
28 #include "oops/instanceKlass.hpp" | |
29 | |
30 // An instanceClassLoaderKlass is a specialization of the InstanceKlass. It does | |
31 // not add any field. It is added to walk the dependencies for the class loader | |
32 // key that this class loader points to. This is how the loader_data graph is | |
33 // walked and dependant class loaders are kept alive. I thought we walked | |
34 // the list later? | |
35 | |
36 class instanceClassLoaderKlass: public InstanceKlass { | |
37 friend class VMStructs; | |
38 friend class InstanceKlass; | |
39 | |
40 // Constructor | |
41 instanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous) | |
42 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {} | |
43 | |
44 public: | |
45 virtual bool oop_is_instanceClassLoader() const { return true; } | |
46 | |
47 instanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); } | |
48 | |
49 // Iterators | |
50 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) { | |
51 return oop_oop_iterate_v(obj, blk); | |
52 } | |
53 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) { | |
54 return oop_oop_iterate_v_m(obj, blk, mr); | |
55 } | |
56 | |
57 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \ | |
58 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \ | |
59 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr); | |
60 | |
61 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL) | |
62 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL) | |
63 | |
64 #ifndef SERIALGC | |
65 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \ | |
66 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk); | |
67 | |
68 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) | |
69 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL) | |
70 #endif // !SERIALGC | |
71 | |
72 // Garbage collection | |
73 void oop_follow_contents(oop obj); | |
74 | |
75 // Parallel Scavenge and Parallel Old | |
76 PARALLEL_GC_DECLS | |
77 }; | |
78 | |
79 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP |