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src/share/vm/runtime/fieldDescriptor.hpp@bf6481e5f96d (annotated)

src/share/vm/runtime/fieldDescriptor.hpp

Wed, 06 Jul 2011 13:02:54 -0700

author

jcoomes

date

Wed, 06 Jul 2011 13:02:54 -0700

changeset 2997

bf6481e5f96d

parent 2708

1d1603768966

child 3137

e6b1331a51d2

permissions

-rw-r--r--

7061225: os::print_cpu_info() should support os-specific data
Reviewed-by: dholmes, never, jwilhelm, kvn

duke@435	1	/*
trims@2708	2	* Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
duke@435	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
duke@435	4	*
duke@435	5	* This code is free software; you can redistribute it and/or modify it
duke@435	6	* under the terms of the GNU General Public License version 2 only, as
duke@435	7	* published by the Free Software Foundation.
duke@435	8	*
duke@435	9	* This code is distributed in the hope that it will be useful, but WITHOUT
duke@435	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
duke@435	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
duke@435	12	* version 2 for more details (a copy is included in the LICENSE file that
duke@435	13	* accompanied this code).
duke@435	14	*
duke@435	15	* You should have received a copy of the GNU General Public License version
duke@435	16	* 2 along with this work; if not, write to the Free Software Foundation,
duke@435	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
duke@435	18	*
trims@1907	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
trims@1907	20	* or visit www.oracle.com if you need additional information or have any
trims@1907	21	* questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
stefank@2314	25	#ifndef SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP
stefank@2314	26	#define SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP
stefank@2314	27
stefank@2314	28	#include "oops/constantPoolOop.hpp"
stefank@2314	29	#include "oops/klassOop.hpp"
stefank@2314	30	#include "oops/oop.inline.hpp"
coleenp@2497	31	#include "oops/symbol.hpp"
stefank@2314	32	#include "runtime/fieldType.hpp"
stefank@2314	33	#include "utilities/accessFlags.hpp"
stefank@2314	34	#include "utilities/constantTag.hpp"
stefank@2314	35
duke@435	36	// A fieldDescriptor describes the attributes of a single field (instance or class variable).
duke@435	37	// It needs the class constant pool to work (because it only holds indices into the pool
duke@435	38	// rather than the actual info).
duke@435	39
duke@435	40	class fieldDescriptor VALUE_OBJ_CLASS_SPEC {
duke@435	41	private:
duke@435	42	AccessFlags _access_flags;
duke@435	43	int _name_index;
duke@435	44	int _signature_index;
duke@435	45	int _initial_value_index;
duke@435	46	int _offset;
duke@435	47	int _generic_signature_index;
duke@435	48	int _index; // index into fields() array
duke@435	49	constantPoolHandle _cp;
duke@435	50
duke@435	51	public:
coleenp@2497	52	Symbol* name() const { return _cp->symbol_at(_name_index); }
coleenp@2497	53	Symbol* signature() const { return _cp->symbol_at(_signature_index); }
duke@435	54	klassOop field_holder() const { return _cp->pool_holder(); }
duke@435	55	constantPoolOop constants() const { return _cp(); }
duke@435	56	AccessFlags access_flags() const { return _access_flags; }
duke@435	57	oop loader() const;
duke@435	58	// Offset (in words) of field from start of instanceOop / klassOop
duke@435	59	int offset() const { return _offset; }
coleenp@2497	60	Symbol* generic_signature() const { return (_generic_signature_index > 0 ? _cp->symbol_at(_generic_signature_index) : (Symbol*)NULL); }
duke@435	61	int index() const { return _index; }
duke@435	62	typeArrayOop annotations() const;
duke@435	63
duke@435	64	// Initial field value
duke@435	65	bool has_initial_value() const { return _initial_value_index != 0; }
duke@435	66	constantTag initial_value_tag() const; // The tag will return true on one of is_int(), is_long(), is_single(), is_double()
duke@435	67	jint int_initial_value() const;
duke@435	68	jlong long_initial_value() const;
duke@435	69	jfloat float_initial_value() const;
duke@435	70	jdouble double_initial_value() const;
duke@435	71	oop string_initial_value(TRAPS) const;
duke@435	72
duke@435	73	// Field signature type
duke@435	74	BasicType field_type() const { return FieldType::basic_type(signature()); }
duke@435	75
duke@435	76	// Access flags
duke@435	77	bool is_public() const { return _access_flags.is_public(); }
duke@435	78	bool is_private() const { return _access_flags.is_private(); }
duke@435	79	bool is_protected() const { return _access_flags.is_protected(); }
duke@435	80	bool is_package_private() const { return !is_public() && !is_private() && !is_protected(); }
duke@435	81
duke@435	82	bool is_static() const { return _access_flags.is_static(); }
duke@435	83	bool is_final() const { return _access_flags.is_final(); }
duke@435	84	bool is_volatile() const { return _access_flags.is_volatile(); }
duke@435	85	bool is_transient() const { return _access_flags.is_transient(); }
duke@435	86
duke@435	87	bool is_synthetic() const { return _access_flags.is_synthetic(); }
duke@435	88
duke@435	89	bool is_field_access_watched() const { return _access_flags.is_field_access_watched(); }
duke@435	90	bool is_field_modification_watched() const
duke@435	91	{ return _access_flags.is_field_modification_watched(); }
duke@435	92	void set_is_field_access_watched(const bool value)
duke@435	93	{ _access_flags.set_is_field_access_watched(value); }
duke@435	94	void set_is_field_modification_watched(const bool value)
duke@435	95	{ _access_flags.set_is_field_modification_watched(value); }
duke@435	96
duke@435	97	// Initialization
duke@435	98	void initialize(klassOop k, int index);
duke@435	99
duke@435	100	// Print
duke@435	101	void print_on(outputStream* st) const PRODUCT_RETURN;
duke@435	102	void print_on_for(outputStream* st, oop obj) PRODUCT_RETURN;
duke@435	103	};
stefank@2314	104
stefank@2314	105	#endif // SHARE_VM_RUNTIME_FIELDDESCRIPTOR_HPP