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comparison src/share/vm/oops/annotations.hpp @ 6725:da91efe96a93

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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
date Sat, 01 Sep 2012 13:25:18 -0400
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children 35431a769282
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6724:36d1d483d5d6 6725:da91efe96a93
1 /*
2 * Copyright (c) 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_ANNOTATIONS_HPP
26 #define SHARE_VM_OOPS_ANNOTATIONS_HPP
27
28 #include "oops/metadata.hpp"
29 #include "runtime/handles.hpp"
30 #include "utilities/array.hpp"
31 #include "utilities/exceptions.hpp"
32 #include "utilities/globalDefinitions.hpp"
33
34
35 class ClassLoaderData;
36 class outputStream;
37
38 typedef Array<u1> AnnotationArray;
39
40 // Class to hold the various types of annotations. The only metadata that points
41 // to this is InstanceKlass.
42
43 class Annotations: public MetaspaceObj {
44
45 // Annotations for this class, or null if none.
46 AnnotationArray* _class_annotations;
47 // Annotation objects (byte arrays) for fields, or null if no annotations.
48 // Indices correspond to entries (not indices) in fields array.
49 Array<AnnotationArray*>* _fields_annotations;
50 // Annotation objects (byte arrays) for methods, or null if no annotations.
51 // Index is the idnum, which is initially the same as the methods array index.
52 Array<AnnotationArray*>* _methods_annotations;
53 // Annotation objects (byte arrays) for methods' parameters, or null if no
54 // such annotations.
55 // Index is the idnum, which is initially the same as the methods array index.
56 Array<AnnotationArray*>* _methods_parameter_annotations;
57 // Annotation objects (byte arrays) for methods' default values, or null if no
58 // such annotations.
59 // Index is the idnum, which is initially the same as the methods array index.
60 Array<AnnotationArray*>* _methods_default_annotations;
61
62 // Constructor where some some values are known to not be null
63 Annotations(Array<AnnotationArray*>* fa, Array<AnnotationArray*>* ma,
64 Array<AnnotationArray*>* mpa, Array<AnnotationArray*>* mda) :
65 _class_annotations(NULL),
66 _fields_annotations(fa),
67 _methods_annotations(ma),
68 _methods_parameter_annotations(mpa),
69 _methods_default_annotations(mda) {}
70
71 public:
72 // Allocate instance of this class
73 static Annotations* allocate(ClassLoaderData* loader_data, TRAPS);
74 static Annotations* allocate(ClassLoaderData* loader_data,
75 Array<AnnotationArray*>* fa,
76 Array<AnnotationArray*>* ma,
77 Array<AnnotationArray*>* mpa,
78 Array<AnnotationArray*>* mda, TRAPS);
79 void deallocate_contents(ClassLoaderData* loader_data);
80 DEBUG_ONLY(bool on_stack() { return false; }) // for template
81 static int size() { return sizeof(Annotations) / wordSize; }
82
83 // Constructor to initialize to null
84 Annotations() : _class_annotations(NULL), _fields_annotations(NULL),
85 _methods_annotations(NULL),
86 _methods_parameter_annotations(NULL),
87 _methods_default_annotations(NULL) {}
88
89 AnnotationArray* class_annotations() const { return _class_annotations; }
90 Array<AnnotationArray*>* fields_annotations() const { return _fields_annotations; }
91 Array<AnnotationArray*>* methods_annotations() const { return _methods_annotations; }
92 Array<AnnotationArray*>* methods_parameter_annotations() const { return _methods_parameter_annotations; }
93 Array<AnnotationArray*>* methods_default_annotations() const { return _methods_default_annotations; }
94
95 void set_class_annotations(AnnotationArray* md) { _class_annotations = md; }
96 void set_fields_annotations(Array<AnnotationArray*>* md) { _fields_annotations = md; }
97 void set_methods_annotations(Array<AnnotationArray*>* md) { _methods_annotations = md; }
98 void set_methods_parameter_annotations(Array<AnnotationArray*>* md) { _methods_parameter_annotations = md; }
99 void set_methods_default_annotations(Array<AnnotationArray*>* md) { _methods_default_annotations = md; }
100
101 // Redefine classes support
102 AnnotationArray* get_method_annotations_of(int idnum)
103 { return get_method_annotations_from(idnum, _methods_annotations); }
104
105 AnnotationArray* get_method_parameter_annotations_of(int idnum)
106 { return get_method_annotations_from(idnum, _methods_parameter_annotations); }
107 AnnotationArray* get_method_default_annotations_of(int idnum)
108 { return get_method_annotations_from(idnum, _methods_default_annotations); }
109
110
111 void set_method_annotations_of(instanceKlassHandle ik,
112 int idnum, AnnotationArray* anno, TRAPS) {
113 set_methods_annotations_of(ik, idnum, anno, &_methods_annotations, THREAD);
114 }
115
116 void set_method_parameter_annotations_of(instanceKlassHandle ik,
117 int idnum, AnnotationArray* anno, TRAPS) {
118 set_methods_annotations_of(ik, idnum, anno, &_methods_parameter_annotations, THREAD);
119 }
120
121 void set_method_default_annotations_of(instanceKlassHandle ik,
122 int idnum, AnnotationArray* anno, TRAPS) {
123 set_methods_annotations_of(ik, idnum, anno, &_methods_default_annotations, THREAD);
124 }
125
126 // Turn metadata annotations into a Java heap object (oop)
127 static typeArrayOop make_java_array(AnnotationArray* annotations, TRAPS);
128
129 inline AnnotationArray* get_method_annotations_from(int idnum, Array<AnnotationArray*>* annos);
130 void set_annotations(Array<AnnotationArray*>* md, Array<AnnotationArray*>** md_p) { *md_p = md; }
131
132 private:
133 void set_methods_annotations_of(instanceKlassHandle ik,
134 int idnum, AnnotationArray* anno,
135 Array<AnnotationArray*>** md_p, TRAPS);
136
137 public:
138 const char* internal_name() const { return "{constant pool}"; }
139 #ifndef PRODUCT
140 void print_on(outputStream* st) const;
141 #endif
142 void print_value_on(outputStream* st) const;
143 };
144
145
146 // For method with idnum get the method's Annotations
147 inline AnnotationArray* Annotations::get_method_annotations_from(int idnum, Array<AnnotationArray*>* annos) {
148 if (annos == NULL || annos->length() <= idnum) {
149 return NULL;
150 }
151 return annos->at(idnum);
152 }
153 #endif // SHARE_VM_OOPS_ANNOTATIONS_HPP