Mercurial > jdk8-mips64-public > hotspot / file comparison
comparison: src/share/vm/runtime/fieldDescriptor.hpp
src/share/vm/runtime/fieldDescriptor.hpp
- changeset 0
- f90c822e73f8
- child 6876
- 710a3c8b516e
equal
deleted
inserted
replaced
| -1:000000000000 | 0:f90c822e73f8 |
|---|---|
| 1 /* | |
| 2 * Copyright (c) 1997, 2013, 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_RUNTIME_FIELDDESCRIPTOR_HPP | |
| 26 #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP | |
| 27 | |
| 28 #include "oops/constantPool.hpp" | |
| 29 #include "oops/symbol.hpp" | |
| 30 #include "runtime/fieldType.hpp" | |
| 31 #include "utilities/accessFlags.hpp" | |
| 32 #include "utilities/constantTag.hpp" | |
| 33 | |
| 34 // A fieldDescriptor describes the attributes of a single field (instance or class variable). | |
| 35 // It needs the class constant pool to work (because it only holds indices into the pool | |
| 36 // rather than the actual info). | |
| 37 | |
| 38 class fieldDescriptor VALUE_OBJ_CLASS_SPEC { | |
| 39 private: | |
| 40 AccessFlags _access_flags; | |
| 41 int _index; // the field index | |
| 42 constantPoolHandle _cp; | |
| 43 | |
| 44 // update the access_flags for the field in the klass | |
| 45 void update_klass_field_access_flag() { | |
| 46 InstanceKlass* ik = field_holder(); | |
| 47 ik->field(index())->set_access_flags(_access_flags.as_short()); | |
| 48 } | |
| 49 | |
| 50 FieldInfo* field() const { | |
| 51 InstanceKlass* ik = field_holder(); | |
| 52 return ik->field(_index); | |
| 53 } | |
| 54 | |
| 55 public: | |
| 56 fieldDescriptor() { | |
| 57 DEBUG_ONLY(_index = badInt); | |
| 58 } | |
| 59 fieldDescriptor(InstanceKlass* ik, int index) { | |
| 60 DEBUG_ONLY(_index = badInt); | |
| 61 reinitialize(ik, index); | |
| 62 } | |
| 63 Symbol* name() const { | |
| 64 return field()->name(_cp); | |
| 65 } | |
| 66 Symbol* signature() const { | |
| 67 return field()->signature(_cp); | |
| 68 } | |
| 69 InstanceKlass* field_holder() const { return _cp->pool_holder(); } | |
| 70 ConstantPool* constants() const { return _cp(); } | |
| 71 AccessFlags access_flags() const { return _access_flags; } | |
| 72 oop loader() const; | |
| 73 // Offset (in words) of field from start of instanceOop / Klass* | |
| 74 int offset() const { return field()->offset(); } | |
| 75 Symbol* generic_signature() const; | |
| 76 int index() const { return _index; } | |
| 77 AnnotationArray* annotations() const; | |
| 78 AnnotationArray* type_annotations() const; | |
| 79 | |
| 80 // Initial field value | |
| 81 bool has_initial_value() const { return field()->initval_index() != 0; } | |
| 82 int initial_value_index() const { return field()->initval_index(); } | |
| 83 constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() | |
| 84 jint int_initial_value() const; | |
| 85 jlong long_initial_value() const; | |
| 86 jfloat float_initial_value() const; | |
| 87 jdouble double_initial_value() const; | |
| 88 oop string_initial_value(TRAPS) const; | |
| 89 | |
| 90 // Field signature type | |
| 91 BasicType field_type() const { return FieldType::basic_type(signature()); } | |
| 92 | |
| 93 // Access flags | |
| 94 bool is_public() const { return access_flags().is_public(); } | |
| 95 bool is_private() const { return access_flags().is_private(); } | |
| 96 bool is_protected() const { return access_flags().is_protected(); } | |
| 97 bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } | |
| 98 | |
| 99 bool is_static() const { return access_flags().is_static(); } | |
| 100 bool is_final() const { return access_flags().is_final(); } | |
| 101 bool is_volatile() const { return access_flags().is_volatile(); } | |
| 102 bool is_transient() const { return access_flags().is_transient(); } | |
| 103 | |
| 104 bool is_synthetic() const { return access_flags().is_synthetic(); } | |
| 105 | |
| 106 bool is_field_access_watched() const { return access_flags().is_field_access_watched(); } | |
| 107 bool is_field_modification_watched() const | |
| 108 { return access_flags().is_field_modification_watched(); } | |
| 109 bool has_generic_signature() const { return access_flags().field_has_generic_signature(); } | |
| 110 | |
| 111 void set_is_field_access_watched(const bool value) { | |
| 112 _access_flags.set_is_field_access_watched(value); | |
| 113 update_klass_field_access_flag(); | |
| 114 } | |
| 115 | |
| 116 void set_is_field_modification_watched(const bool value) { | |
| 117 _access_flags.set_is_field_modification_watched(value); | |
| 118 update_klass_field_access_flag(); | |
| 119 } | |
| 120 | |
| 121 // Initialization | |
| 122 void reinitialize(InstanceKlass* ik, int index); | |
| 123 | |
| 124 // Print | |
| 125 void print() { print_on(tty); } | |
| 126 void print_on(outputStream* st) const PRODUCT_RETURN; | |
| 127 void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; | |
| 128 void verify() const PRODUCT_RETURN; | |
| 129 }; | |
| 130 | |
| 131 #endif // SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP |
