|
3938
|
1 /*
|
|
|
2 * Copyright (c) 2011, 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_FIELDSTREAMS_HPP
|
|
|
26 #define SHARE_VM_OOPS_FIELDSTREAMS_HPP
|
|
|
27
|
|
|
28 #include "oops/instanceKlass.hpp"
|
|
|
29 #include "oops/fieldInfo.hpp"
|
|
|
30
|
|
|
31 // The is the base class for iteration over the fields array
|
|
|
32 // describing the declared fields in the class. Several subclasses
|
|
|
33 // are provided depending on the kind of iteration required. The
|
|
|
34 // JavaFieldStream is for iterating over regular Java fields and it
|
|
|
35 // generally the preferred iterator. InternalFieldStream only
|
|
|
36 // iterates over fields that have been injected by the JVM.
|
|
|
37 // AllFieldStream exposes all fields and should only be used in rare
|
|
|
38 // cases.
|
|
|
39 class FieldStreamBase : public StackObj {
|
|
|
40 protected:
|
|
|
41 typeArrayHandle _fields;
|
|
|
42 constantPoolHandle _constants;
|
|
|
43 int _index;
|
|
|
44 int _limit;
|
|
|
45
|
|
|
46 FieldInfo* field() const { return FieldInfo::from_field_array(_fields(), _index); }
|
|
|
47
|
|
|
48 FieldStreamBase(typeArrayHandle fields, constantPoolHandle constants, int start, int limit) {
|
|
|
49 _fields = fields;
|
|
|
50 _constants = constants;
|
|
|
51 _index = start;
|
|
|
52 _limit = limit;
|
|
|
53 }
|
|
|
54
|
|
|
55 FieldStreamBase(typeArrayHandle fields, constantPoolHandle constants) {
|
|
|
56 _fields = fields;
|
|
|
57 _constants = constants;
|
|
|
58 _index = 0;
|
|
|
59 _limit = fields->length() / FieldInfo::field_slots;
|
|
|
60 }
|
|
|
61
|
|
|
62 public:
|
|
|
63 FieldStreamBase(instanceKlass* klass) {
|
|
|
64 _fields = klass->fields();
|
|
|
65 _constants = klass->constants();
|
|
|
66 _index = 0;
|
|
|
67 _limit = klass->java_fields_count();
|
|
|
68 }
|
|
|
69 FieldStreamBase(instanceKlassHandle klass) {
|
|
|
70 _fields = klass->fields();
|
|
|
71 _constants = klass->constants();
|
|
|
72 _index = 0;
|
|
|
73 _limit = klass->java_fields_count();
|
|
|
74 }
|
|
|
75
|
|
|
76 // accessors
|
|
|
77 int index() const { return _index; }
|
|
|
78
|
|
|
79 void next() { _index += 1; }
|
|
|
80 bool done() const { return _index >= _limit; }
|
|
|
81
|
|
|
82 // Accessors for current field
|
|
|
83 AccessFlags access_flags() const {
|
|
|
84 AccessFlags flags;
|
|
|
85 flags.set_flags(field()->access_flags());
|
|
|
86 return flags;
|
|
|
87 }
|
|
|
88
|
|
|
89 void set_access_flags(u2 flags) const {
|
|
|
90 field()->set_access_flags(flags);
|
|
|
91 }
|
|
|
92
|
|
|
93 void set_access_flags(AccessFlags flags) const {
|
|
|
94 set_access_flags(flags.as_short());
|
|
|
95 }
|
|
|
96
|
|
|
97 Symbol* name() const {
|
|
|
98 return field()->name(_constants);
|
|
|
99 }
|
|
|
100
|
|
|
101 Symbol* signature() const {
|
|
|
102 return field()->signature(_constants);
|
|
|
103 }
|
|
|
104
|
|
|
105 Symbol* generic_signature() const {
|
|
|
106 return field()->generic_signature(_constants);
|
|
|
107 }
|
|
|
108
|
|
|
109 int offset() const {
|
|
|
110 return field()->offset();
|
|
|
111 }
|
|
|
112
|
|
|
113 void set_offset(int offset) {
|
|
|
114 field()->set_offset(offset);
|
|
|
115 }
|
|
|
116 };
|
|
|
117
|
|
|
118 // Iterate over only the internal fields
|
|
|
119 class JavaFieldStream : public FieldStreamBase {
|
|
|
120 public:
|
|
|
121 JavaFieldStream(instanceKlass* k): FieldStreamBase(k->fields(), k->constants(), 0, k->java_fields_count()) {}
|
|
|
122 JavaFieldStream(instanceKlassHandle k): FieldStreamBase(k->fields(), k->constants(), 0, k->java_fields_count()) {}
|
|
|
123
|
|
|
124 int name_index() const {
|
|
|
125 assert(!field()->is_internal(), "regular only");
|
|
|
126 return field()->name_index();
|
|
|
127 }
|
|
|
128 void set_name_index(int index) {
|
|
|
129 assert(!field()->is_internal(), "regular only");
|
|
|
130 field()->set_name_index(index);
|
|
|
131 }
|
|
|
132 int signature_index() const {
|
|
|
133 assert(!field()->is_internal(), "regular only");
|
|
|
134 return field()->signature_index();
|
|
|
135 }
|
|
|
136 void set_signature_index(int index) {
|
|
|
137 assert(!field()->is_internal(), "regular only");
|
|
|
138 field()->set_signature_index(index);
|
|
|
139 }
|
|
|
140 int generic_signature_index() const {
|
|
|
141 assert(!field()->is_internal(), "regular only");
|
|
|
142 return field()->generic_signature_index();
|
|
|
143 }
|
|
|
144 void set_generic_signature_index(int index) {
|
|
|
145 assert(!field()->is_internal(), "regular only");
|
|
|
146 field()->set_generic_signature_index(index);
|
|
|
147 }
|
|
|
148 int initval_index() const {
|
|
|
149 assert(!field()->is_internal(), "regular only");
|
|
|
150 return field()->initval_index();
|
|
|
151 }
|
|
|
152 void set_initval_index(int index) {
|
|
|
153 assert(!field()->is_internal(), "regular only");
|
|
|
154 return field()->set_initval_index(index);
|
|
|
155 }
|
|
|
156 };
|
|
|
157
|
|
|
158
|
|
|
159 // Iterate over only the internal fields
|
|
|
160 class InternalFieldStream : public FieldStreamBase {
|
|
|
161 public:
|
|
|
162 InternalFieldStream(instanceKlass* k): FieldStreamBase(k->fields(), k->constants(), k->java_fields_count(), k->all_fields_count()) {}
|
|
|
163 InternalFieldStream(instanceKlassHandle k): FieldStreamBase(k->fields(), k->constants(), k->java_fields_count(), k->all_fields_count()) {}
|
|
|
164 };
|
|
|
165
|
|
|
166
|
|
|
167 class AllFieldStream : public FieldStreamBase {
|
|
|
168 public:
|
|
|
169 AllFieldStream(typeArrayHandle fields, constantPoolHandle constants): FieldStreamBase(fields, constants) {}
|
|
|
170 AllFieldStream(instanceKlass* k): FieldStreamBase(k->fields(), k->constants()) {}
|
|
|
171 AllFieldStream(instanceKlassHandle k): FieldStreamBase(k->fields(), k->constants()) {}
|
|
|
172 };
|
|
|
173
|
|
|
174 #endif // SHARE_VM_OOPS_FIELDSTREAMS_HPP
|
