Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/runtime/fieldDescriptor.hpp@710a3c8b516e (annotated)
src/share/vm/runtime/fieldDescriptor.hpp
Tue, 08 Aug 2017 15:57:29 +0800
- author
- aoqi
- date
- Tue, 08 Aug 2017 15:57:29 +0800
- changeset 6876
- 710a3c8b516e
- parent 5732
- b2e698d2276c
- parent 0
- f90c822e73f8
- child 8856
- ac27a9c85bea
- permissions
- -rw-r--r--
merge
| aoqi@0 | 1 | /* |
| aoqi@0 | 2 | * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
| aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| aoqi@0 | 4 | * |
| aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
| aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| aoqi@0 | 7 | * published by the Free Software Foundation. |
| aoqi@0 | 8 | * |
| aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| aoqi@0 | 13 | * accompanied this code). |
| aoqi@0 | 14 | * |
| aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
| aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| aoqi@0 | 18 | * |
| aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
| aoqi@0 | 21 | * questions. |
| aoqi@0 | 22 | * |
| aoqi@0 | 23 | */ |
| aoqi@0 | 24 | |
| aoqi@0 | 25 | #ifndef SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP |
| aoqi@0 | 26 | #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP |
| aoqi@0 | 27 | |
| aoqi@0 | 28 | #include "oops/constantPool.hpp" |
| aoqi@0 | 29 | #include "oops/symbol.hpp" |
| aoqi@0 | 30 | #include "runtime/fieldType.hpp" |
| aoqi@0 | 31 | #include "utilities/accessFlags.hpp" |
| aoqi@0 | 32 | #include "utilities/constantTag.hpp" |
| aoqi@0 | 33 | |
| aoqi@0 | 34 | // A fieldDescriptor describes the attributes of a single field (instance or class variable). |
| aoqi@0 | 35 | // It needs the class constant pool to work (because it only holds indices into the pool |
| aoqi@0 | 36 | // rather than the actual info). |
| aoqi@0 | 37 | |
| aoqi@0 | 38 | class fieldDescriptor VALUE_OBJ_CLASS_SPEC { |
| aoqi@0 | 39 | private: |
| aoqi@0 | 40 | AccessFlags _access_flags; |
| aoqi@0 | 41 | int _index; // the field index |
| aoqi@0 | 42 | constantPoolHandle _cp; |
| aoqi@0 | 43 | |
| aoqi@0 | 44 | // update the access_flags for the field in the klass |
| aoqi@0 | 45 | void update_klass_field_access_flag() { |
| aoqi@0 | 46 | InstanceKlass* ik = field_holder(); |
| aoqi@0 | 47 | ik->field(index())->set_access_flags(_access_flags.as_short()); |
| aoqi@0 | 48 | } |
| aoqi@0 | 49 | |
| aoqi@0 | 50 | FieldInfo* field() const { |
| aoqi@0 | 51 | InstanceKlass* ik = field_holder(); |
| aoqi@0 | 52 | return ik->field(_index); |
| aoqi@0 | 53 | } |
| aoqi@0 | 54 | |
| aoqi@0 | 55 | public: |
| aoqi@0 | 56 | fieldDescriptor() { |
| aoqi@0 | 57 | DEBUG_ONLY(_index = badInt); |
| aoqi@0 | 58 | } |
| aoqi@0 | 59 | fieldDescriptor(InstanceKlass* ik, int index) { |
| aoqi@0 | 60 | DEBUG_ONLY(_index = badInt); |
| aoqi@0 | 61 | reinitialize(ik, index); |
| aoqi@0 | 62 | } |
| aoqi@0 | 63 | Symbol* name() const { |
| aoqi@0 | 64 | return field()->name(_cp); |
| aoqi@0 | 65 | } |
| aoqi@0 | 66 | Symbol* signature() const { |
| aoqi@0 | 67 | return field()->signature(_cp); |
| aoqi@0 | 68 | } |
| aoqi@0 | 69 | InstanceKlass* field_holder() const { return _cp->pool_holder(); } |
| aoqi@0 | 70 | ConstantPool* constants() const { return _cp(); } |
| aoqi@0 | 71 | AccessFlags access_flags() const { return _access_flags; } |
| aoqi@0 | 72 | oop loader() const; |
| aoqi@0 | 73 | // Offset (in words) of field from start of instanceOop / Klass* |
| aoqi@0 | 74 | int offset() const { return field()->offset(); } |
| aoqi@0 | 75 | Symbol* generic_signature() const; |
| aoqi@0 | 76 | int index() const { return _index; } |
| aoqi@0 | 77 | AnnotationArray* annotations() const; |
| aoqi@0 | 78 | AnnotationArray* type_annotations() const; |
| aoqi@0 | 79 | |
| aoqi@0 | 80 | // Initial field value |
| aoqi@0 | 81 | bool has_initial_value() const { return field()->initval_index() != 0; } |
| aoqi@0 | 82 | int initial_value_index() const { return field()->initval_index(); } |
| aoqi@0 | 83 | constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() |
| aoqi@0 | 84 | jint int_initial_value() const; |
| aoqi@0 | 85 | jlong long_initial_value() const; |
| aoqi@0 | 86 | jfloat float_initial_value() const; |
| aoqi@0 | 87 | jdouble double_initial_value() const; |
| aoqi@0 | 88 | oop string_initial_value(TRAPS) const; |
| aoqi@0 | 89 | |
| aoqi@0 | 90 | // Field signature type |
| aoqi@0 | 91 | BasicType field_type() const { return FieldType::basic_type(signature()); } |
| aoqi@0 | 92 | |
| aoqi@0 | 93 | // Access flags |
| aoqi@0 | 94 | bool is_public() const { return access_flags().is_public(); } |
| aoqi@0 | 95 | bool is_private() const { return access_flags().is_private(); } |
| aoqi@0 | 96 | bool is_protected() const { return access_flags().is_protected(); } |
| aoqi@0 | 97 | bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } |
| aoqi@0 | 98 | |
| aoqi@0 | 99 | bool is_static() const { return access_flags().is_static(); } |
| aoqi@0 | 100 | bool is_final() const { return access_flags().is_final(); } |
| aoqi@0 | 101 | bool is_volatile() const { return access_flags().is_volatile(); } |
| aoqi@0 | 102 | bool is_transient() const { return access_flags().is_transient(); } |
| aoqi@0 | 103 | |
| aoqi@0 | 104 | bool is_synthetic() const { return access_flags().is_synthetic(); } |
| aoqi@0 | 105 | |
| aoqi@0 | 106 | bool is_field_access_watched() const { return access_flags().is_field_access_watched(); } |
| aoqi@0 | 107 | bool is_field_modification_watched() const |
| aoqi@0 | 108 | { return access_flags().is_field_modification_watched(); } |
| aoqi@0 | 109 | bool has_generic_signature() const { return access_flags().field_has_generic_signature(); } |
| aoqi@0 | 110 | |
| aoqi@0 | 111 | void set_is_field_access_watched(const bool value) { |
| aoqi@0 | 112 | _access_flags.set_is_field_access_watched(value); |
| aoqi@0 | 113 | update_klass_field_access_flag(); |
| aoqi@0 | 114 | } |
| aoqi@0 | 115 | |
| aoqi@0 | 116 | void set_is_field_modification_watched(const bool value) { |
| aoqi@0 | 117 | _access_flags.set_is_field_modification_watched(value); |
| aoqi@0 | 118 | update_klass_field_access_flag(); |
| aoqi@0 | 119 | } |
| aoqi@0 | 120 | |
| aoqi@0 | 121 | // Initialization |
| aoqi@0 | 122 | void reinitialize(InstanceKlass* ik, int index); |
| aoqi@0 | 123 | |
| aoqi@0 | 124 | |
| aoqi@0 | 125 | void print() { print_on(tty); } |
| aoqi@0 | 126 | void print_on(outputStream* st) const PRODUCT_RETURN; |
| aoqi@0 | 127 | void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; |
| aoqi@0 | 128 | void verify() const PRODUCT_RETURN; |
| aoqi@0 | 129 | }; |
| aoqi@0 | 130 | |
| aoqi@0 | 131 | #endif // SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP |
