Mercurial > hg > truffle
annotate src/share/vm/runtime/fieldDescriptor.hpp @ 4724:0841c0ec2ed6
7123810: new hotspot build - hs23-b10
Reviewed-by: jcoomes
author | amurillo |
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date | Fri, 23 Dec 2011 15:29:34 -0800 |
parents | e6b1331a51d2 |
children | 04b9a2566eec 71afdabfd05b |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 2011, 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_RUNTIME_FIELDDESCRIPTOR_HPP |
26 #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP | |
27 | |
28 #include "oops/constantPoolOop.hpp" | |
29 #include "oops/klassOop.hpp" | |
30 #include "oops/oop.inline.hpp" | |
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31 #include "oops/symbol.hpp" |
1972 | 32 #include "runtime/fieldType.hpp" |
33 #include "utilities/accessFlags.hpp" | |
34 #include "utilities/constantTag.hpp" | |
35 | |
0 | 36 // A fieldDescriptor describes the attributes of a single field (instance or class variable). |
37 // It needs the class constant pool to work (because it only holds indices into the pool | |
38 // rather than the actual info). | |
39 | |
40 class fieldDescriptor VALUE_OBJ_CLASS_SPEC { | |
41 private: | |
42 AccessFlags _access_flags; | |
3938 | 43 int _index; // the field index |
0 | 44 constantPoolHandle _cp; |
45 | |
3938 | 46 // update the access_flags for the field in the klass |
47 void update_klass_field_access_flag() { | |
48 instanceKlass* ik = instanceKlass::cast(field_holder()); | |
49 ik->field(index())->set_access_flags(_access_flags.as_short()); | |
50 } | |
51 | |
52 FieldInfo* field() const { | |
53 instanceKlass* ik = instanceKlass::cast(field_holder()); | |
54 return ik->field(_index); | |
55 } | |
56 | |
0 | 57 public: |
3938 | 58 Symbol* name() const { |
59 return field()->name(_cp); | |
60 } | |
61 Symbol* signature() const { | |
62 return field()->signature(_cp); | |
63 } | |
0 | 64 klassOop field_holder() const { return _cp->pool_holder(); } |
65 constantPoolOop constants() const { return _cp(); } | |
66 AccessFlags access_flags() const { return _access_flags; } | |
67 oop loader() const; | |
68 // Offset (in words) of field from start of instanceOop / klassOop | |
3938 | 69 int offset() const { return field()->offset(); } |
70 Symbol* generic_signature() const { return field()->generic_signature(_cp); } | |
0 | 71 int index() const { return _index; } |
72 typeArrayOop annotations() const; | |
73 | |
74 // Initial field value | |
3938 | 75 bool has_initial_value() const { return field()->initval_index() != 0; } |
76 int initial_value_index() const { return field()->initval_index(); } | |
0 | 77 constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() |
78 jint int_initial_value() const; | |
79 jlong long_initial_value() const; | |
80 jfloat float_initial_value() const; | |
81 jdouble double_initial_value() const; | |
82 oop string_initial_value(TRAPS) const; | |
83 | |
84 // Field signature type | |
85 BasicType field_type() const { return FieldType::basic_type(signature()); } | |
86 | |
87 // Access flags | |
3938 | 88 bool is_public() const { return access_flags().is_public(); } |
89 bool is_private() const { return access_flags().is_private(); } | |
90 bool is_protected() const { return access_flags().is_protected(); } | |
0 | 91 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } |
92 | |
3938 | 93 bool is_static() const { return access_flags().is_static(); } |
94 bool is_final() const { return access_flags().is_final(); } | |
95 bool is_volatile() const { return access_flags().is_volatile(); } | |
96 bool is_transient() const { return access_flags().is_transient(); } | |
0 | 97 |
3938 | 98 bool is_synthetic() const { return access_flags().is_synthetic(); } |
0 | 99 |
3938 | 100 bool is_field_access_watched() const { return access_flags().is_field_access_watched(); } |
0 | 101 bool is_field_modification_watched() const |
3938 | 102 { return access_flags().is_field_modification_watched(); } |
103 | |
104 void set_is_field_access_watched(const bool value) { | |
105 _access_flags.set_is_field_access_watched(value); | |
106 update_klass_field_access_flag(); | |
107 } | |
108 | |
109 void set_is_field_modification_watched(const bool value) { | |
110 _access_flags.set_is_field_modification_watched(value); | |
111 update_klass_field_access_flag(); | |
112 } | |
0 | 113 |
114 // Initialization | |
115 void initialize(klassOop k, int index); | |
116 | |
117 // Print | |
118 void print_on(outputStream* st) const PRODUCT_RETURN; | |
119 void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; | |
120 }; | |
1972 | 121 |
122 #endif // SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP |