Mercurial > hg > truffle
comparison src/share/vm/ci/ciMetadata.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 | bd7a7ce2e264 |
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1 /* | |
2 * Copyright (c) 1999, 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_CI_CIMETADATA_HPP | |
26 #define SHARE_VM_CI_CIMETADATA_HPP | |
27 | |
28 #include "ci/ciBaseObject.hpp" | |
29 #include "ci/ciClassList.hpp" | |
30 #include "memory/allocation.hpp" | |
31 #include "runtime/handles.hpp" | |
32 #include "runtime/jniHandles.hpp" | |
33 | |
34 // ciMetadata | |
35 // | |
36 // Compiler interface to metadata object in the VM, not Java object. | |
37 | |
38 class ciMetadata: public ciBaseObject { | |
39 CI_PACKAGE_ACCESS | |
40 friend class ciEnv; | |
41 | |
42 protected: | |
43 Metadata* _metadata; | |
44 | |
45 ciMetadata(): _metadata(NULL) {} | |
46 ciMetadata(Metadata* o): _metadata(o) {} | |
47 | |
48 virtual bool is_classless() const { return false; } | |
49 public: | |
50 bool is_loaded() const { return _metadata != NULL || is_classless(); } | |
51 | |
52 virtual bool is_metadata() const { return true; } | |
53 | |
54 virtual bool is_type() const { return false; } | |
55 virtual bool is_cpcache() const { return false; } | |
56 virtual bool is_return_address() const { return false; } | |
57 virtual bool is_method() const { return false; } | |
58 virtual bool is_method_data() const { return false; } | |
59 virtual bool is_klass() const { return false; } | |
60 virtual bool is_instance_klass() const { return false; } | |
61 virtual bool is_array_klass() const { return false; } | |
62 virtual bool is_obj_array_klass() const { return false; } | |
63 virtual bool is_type_array_klass() const { return false; } | |
64 | |
65 ciMethod* as_method() { | |
66 assert(is_method(), "bad cast"); | |
67 return (ciMethod*)this; | |
68 } | |
69 ciMethodData* as_method_data() { | |
70 assert(is_method_data(), "bad cast"); | |
71 return (ciMethodData*)this; | |
72 } | |
73 ciSymbol* as_symbol() { | |
74 assert(is_symbol(), "bad cast"); | |
75 return (ciSymbol*)this; | |
76 } | |
77 ciType* as_type() { | |
78 assert(is_type(), "bad cast"); | |
79 return (ciType*)this; | |
80 } | |
81 ciReturnAddress* as_return_address() { | |
82 assert(is_return_address(), "bad cast"); | |
83 return (ciReturnAddress*)this; | |
84 } | |
85 ciKlass* as_klass() { | |
86 assert(is_klass(), "bad cast"); | |
87 return (ciKlass*)this; | |
88 } | |
89 ciInstanceKlass* as_instance_klass() { | |
90 assert(is_instance_klass(), "bad cast"); | |
91 return (ciInstanceKlass*)this; | |
92 } | |
93 ciArrayKlass* as_array_klass() { | |
94 assert(is_array_klass(), "bad cast"); | |
95 return (ciArrayKlass*)this; | |
96 } | |
97 ciObjArrayKlass* as_obj_array_klass() { | |
98 assert(is_obj_array_klass(), "bad cast"); | |
99 return (ciObjArrayKlass*)this; | |
100 } | |
101 ciTypeArrayKlass* as_type_array_klass() { | |
102 assert(is_type_array_klass(), "bad cast"); | |
103 return (ciTypeArrayKlass*)this; | |
104 } | |
105 | |
106 Metadata* constant_encoding() { return _metadata; } | |
107 | |
108 bool equals(ciMetadata* obj) const { return (this == obj); } | |
109 | |
110 int hash() { return ident() * 31; } // ??? | |
111 | |
112 void print(outputStream* st); | |
113 virtual void print_impl(outputStream* st) {} | |
114 virtual const char* type_string() { return "ciMetadata"; } | |
115 | |
116 void print() { print(tty); } | |
117 void print_metadata(outputStream* st = tty); | |
118 | |
119 }; | |
120 #endif // SHARE_VM_CI_CIMETADATA_HPP |