duke@435: /* drchase@5732: * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. duke@435: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. duke@435: * duke@435: * This code is free software; you can redistribute it and/or modify it duke@435: * under the terms of the GNU General Public License version 2 only, as duke@435: * published by the Free Software Foundation. duke@435: * duke@435: * This code is distributed in the hope that it will be useful, but WITHOUT duke@435: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or duke@435: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License duke@435: * version 2 for more details (a copy is included in the LICENSE file that duke@435: * accompanied this code). duke@435: * duke@435: * You should have received a copy of the GNU General Public License version duke@435: * 2 along with this work; if not, write to the Free Software Foundation, duke@435: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. duke@435: * trims@1907: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA trims@1907: * or visit www.oracle.com if you need additional information or have any trims@1907: * questions. duke@435: * duke@435: */ duke@435: stefank@2314: #ifndef SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP stefank@2314: #define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP stefank@2314: coleenp@4037: #include "oops/constantPool.hpp" coleenp@2497: #include "oops/symbol.hpp" stefank@2314: #include "runtime/fieldType.hpp" stefank@2314: #include "utilities/accessFlags.hpp" stefank@2314: #include "utilities/constantTag.hpp" stefank@2314: duke@435: // A fieldDescriptor describes the attributes of a single field (instance or class variable). duke@435: // It needs the class constant pool to work (because it only holds indices into the pool duke@435: // rather than the actual info). duke@435: duke@435: class fieldDescriptor VALUE_OBJ_CLASS_SPEC { duke@435: private: duke@435: AccessFlags _access_flags; never@3137: int _index; // the field index duke@435: constantPoolHandle _cp; duke@435: never@3137: // update the access_flags for the field in the klass never@3137: void update_klass_field_access_flag() { coleenp@4251: InstanceKlass* ik = field_holder(); never@3137: ik->field(index())->set_access_flags(_access_flags.as_short()); never@3137: } never@3137: never@3137: FieldInfo* field() const { coleenp@4251: InstanceKlass* ik = field_holder(); never@3137: return ik->field(_index); never@3137: } never@3137: duke@435: public: drchase@5732: fieldDescriptor() { drchase@5732: DEBUG_ONLY(_index = badInt); drchase@5732: } drchase@5732: fieldDescriptor(InstanceKlass* ik, int index) { drchase@5732: DEBUG_ONLY(_index = badInt); drchase@5732: reinitialize(ik, index); drchase@5732: } never@3137: Symbol* name() const { never@3137: return field()->name(_cp); never@3137: } never@3137: Symbol* signature() const { never@3137: return field()->signature(_cp); never@3137: } coleenp@4251: InstanceKlass* field_holder() const { return _cp->pool_holder(); } coleenp@4251: ConstantPool* constants() const { return _cp(); } coleenp@4251: AccessFlags access_flags() const { return _access_flags; } coleenp@4251: oop loader() const; coleenp@4037: // Offset (in words) of field from start of instanceOop / Klass* coleenp@4251: int offset() const { return field()->offset(); } coleenp@4251: Symbol* generic_signature() const; coleenp@4251: int index() const { return _index; } coleenp@4251: AnnotationArray* annotations() const; stefank@4393: AnnotationArray* type_annotations() const; duke@435: duke@435: // Initial field value coleenp@4251: bool has_initial_value() const { return field()->initval_index() != 0; } coleenp@4251: int initial_value_index() const { return field()->initval_index(); } duke@435: constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double() coleenp@4251: jint int_initial_value() const; coleenp@4251: jlong long_initial_value() const; coleenp@4251: jfloat float_initial_value() const; coleenp@4251: jdouble double_initial_value() const; coleenp@4251: oop string_initial_value(TRAPS) const; duke@435: duke@435: // Field signature type coleenp@4251: BasicType field_type() const { return FieldType::basic_type(signature()); } duke@435: duke@435: // Access flags coleenp@4251: bool is_public() const { return access_flags().is_public(); } coleenp@4251: bool is_private() const { return access_flags().is_private(); } coleenp@4251: bool is_protected() const { return access_flags().is_protected(); } coleenp@4251: bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); } duke@435: coleenp@4251: bool is_static() const { return access_flags().is_static(); } coleenp@4251: bool is_final() const { return access_flags().is_final(); } coleenp@4251: bool is_volatile() const { return access_flags().is_volatile(); } coleenp@4251: bool is_transient() const { return access_flags().is_transient(); } duke@435: coleenp@4251: bool is_synthetic() const { return access_flags().is_synthetic(); } duke@435: coleenp@4251: bool is_field_access_watched() const { return access_flags().is_field_access_watched(); } duke@435: bool is_field_modification_watched() const coleenp@4251: { return access_flags().is_field_modification_watched(); } coleenp@4251: bool has_generic_signature() const { return access_flags().field_has_generic_signature(); } never@3137: never@3137: void set_is_field_access_watched(const bool value) { never@3137: _access_flags.set_is_field_access_watched(value); never@3137: update_klass_field_access_flag(); never@3137: } never@3137: never@3137: void set_is_field_modification_watched(const bool value) { never@3137: _access_flags.set_is_field_modification_watched(value); never@3137: update_klass_field_access_flag(); never@3137: } duke@435: duke@435: // Initialization drchase@5732: void reinitialize(InstanceKlass* ik, int index); duke@435: duke@435: // Print twisti@3969: void print() { print_on(tty); } duke@435: void print_on(outputStream* st) const PRODUCT_RETURN; duke@435: void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN; drchase@5732: void verify() const PRODUCT_RETURN; duke@435: }; stefank@2314: stefank@2314: #endif // SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP