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src/share/vm/utilities/accessFlags.hpp@a1980da045cc (annotated)

src/share/vm/utilities/accessFlags.hpp

Fri, 07 Nov 2008 09:29:38 -0800

author

kvn

date

Fri, 07 Nov 2008 09:29:38 -0800

changeset 855

a1980da045cc

parent 435

a61af66fc99e

child 1145

e5b0439ef4ae

permissions

-rw-r--r--

6462850: generate biased locking code in C2 ideal graph
Summary: Inline biased locking code in C2 ideal graph during macro nodes expansion
Reviewed-by: never

duke@435	1	/*
duke@435	2	* Copyright 1997-2007 Sun Microsystems, Inc. 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	*
duke@435	19	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
duke@435	20	* CA 95054 USA or visit www.sun.com if you need additional information or
duke@435	21	* have any questions.
duke@435	22	*
duke@435	23	*/
duke@435	24
duke@435	25	// AccessFlags is an abstraction over Java access flags.
duke@435	26
duke@435	27
duke@435	28	enum {
duke@435	29	// See jvm.h for shared JVM_ACC_XXX access flags
duke@435	30
duke@435	31	// HotSpot-specific access flags
duke@435	32
duke@435	33	// flags actually put in .class file
duke@435	34	JVM_ACC_WRITTEN_FLAGS = 0x00007FFF,
duke@435	35
duke@435	36	// methodOop flags
duke@435	37	JVM_ACC_MONITOR_MATCH = 0x10000000, // True if we know that monitorenter/monitorexit bytecodes match
duke@435	38	JVM_ACC_HAS_MONITOR_BYTECODES = 0x20000000, // Method contains monitorenter/monitorexit bytecodes
duke@435	39	JVM_ACC_HAS_LOOPS = 0x40000000, // Method has loops
duke@435	40	JVM_ACC_LOOPS_FLAG_INIT = (int)0x80000000,// The loop flag has been initialized
duke@435	41	JVM_ACC_QUEUED = 0x01000000, // Queued for compilation
duke@435	42	JVM_ACC_NOT_TIER1_COMPILABLE = 0x04000000,
duke@435	43	JVM_ACC_NOT_OSR_COMPILABLE = 0x08000000,
duke@435	44	JVM_ACC_HAS_LINE_NUMBER_TABLE = 0x00100000,
duke@435	45	JVM_ACC_HAS_CHECKED_EXCEPTIONS = 0x00400000,
duke@435	46	JVM_ACC_HAS_JSRS = 0x00800000,
duke@435	47	JVM_ACC_IS_OLD = 0x00010000, // RedefineClasses() has replaced this method
duke@435	48	JVM_ACC_IS_OBSOLETE = 0x00020000, // RedefineClasses() has made method obsolete
duke@435	49	JVM_ACC_IS_PREFIXED_NATIVE = 0x00040000, // JVMTI has prefixed this native method
duke@435	50
duke@435	51	// klassOop flags
duke@435	52	JVM_ACC_HAS_MIRANDA_METHODS = 0x10000000, // True if this class has miranda methods in it's vtable
duke@435	53	JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000, // True if klass has a vanilla default constructor
duke@435	54	JVM_ACC_HAS_FINALIZER = 0x40000000, // True if klass has a non-empty finalize() method
duke@435	55	JVM_ACC_IS_CLONEABLE = (int)0x80000000,// True if klass supports the Clonable interface
duke@435	56	JVM_ACC_HAS_FINAL_METHOD = 0x01000000, // True if klass has final method
duke@435	57
duke@435	58	// klassOop and methodOop flags
duke@435	59	JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000,
duke@435	60
duke@435	61	JVM_ACC_PROMOTED_FLAGS = 0x00200000, // flags promoted from methods to the holding klass
duke@435	62
duke@435	63	// field flags
duke@435	64	// Note: these flags must be defined in the low order 16 bits because
duke@435	65	// instanceKlass only stores a ushort worth of information from the
duke@435	66	// AccessFlags value.
duke@435	67	// These bits must not conflict with any other field-related access flags
duke@435	68	// (e.g., ACC_ENUM).
duke@435	69	// Note that the class-related ACC_ANNOTATION bit conflicts with these flags.
duke@435	70	JVM_ACC_FIELD_ACCESS_WATCHED = 0x00002000, // field access is watched by JVMTI
duke@435	71	JVM_ACC_FIELD_MODIFICATION_WATCHED = 0x00008000, // field modification is watched by JVMTI
duke@435	72
duke@435	73	// flags accepted by set_field_flags()
duke@435	74	JVM_ACC_FIELD_FLAGS = 0x00008000 | JVM_ACC_WRITTEN_FLAGS
duke@435	75	};
duke@435	76
duke@435	77
duke@435	78	class AccessFlags VALUE_OBJ_CLASS_SPEC {
duke@435	79	friend class VMStructs;
duke@435	80	private:
duke@435	81	jint _flags;
duke@435	82
duke@435	83	public:
duke@435	84	// Java access flags
duke@435	85	bool is_public () const { return (_flags & JVM_ACC_PUBLIC ) != 0; }
duke@435	86	bool is_private () const { return (_flags & JVM_ACC_PRIVATE ) != 0; }
duke@435	87	bool is_protected () const { return (_flags & JVM_ACC_PROTECTED ) != 0; }
duke@435	88	bool is_static () const { return (_flags & JVM_ACC_STATIC ) != 0; }
duke@435	89	bool is_final () const { return (_flags & JVM_ACC_FINAL ) != 0; }
duke@435	90	bool is_synchronized() const { return (_flags & JVM_ACC_SYNCHRONIZED) != 0; }
duke@435	91	bool is_super () const { return (_flags & JVM_ACC_SUPER ) != 0; }
duke@435	92	bool is_volatile () const { return (_flags & JVM_ACC_VOLATILE ) != 0; }
duke@435	93	bool is_transient () const { return (_flags & JVM_ACC_TRANSIENT ) != 0; }
duke@435	94	bool is_native () const { return (_flags & JVM_ACC_NATIVE ) != 0; }
duke@435	95	bool is_interface () const { return (_flags & JVM_ACC_INTERFACE ) != 0; }
duke@435	96	bool is_abstract () const { return (_flags & JVM_ACC_ABSTRACT ) != 0; }
duke@435	97	bool is_strict () const { return (_flags & JVM_ACC_STRICT ) != 0; }
duke@435	98
duke@435	99	// Attribute flags
duke@435	100	bool is_synthetic () const { return (_flags & JVM_ACC_SYNTHETIC ) != 0; }
duke@435	101
duke@435	102	// methodOop flags
duke@435	103	bool is_monitor_matching () const { return (_flags & JVM_ACC_MONITOR_MATCH ) != 0; }
duke@435	104	bool has_monitor_bytecodes () const { return (_flags & JVM_ACC_HAS_MONITOR_BYTECODES ) != 0; }
duke@435	105	bool has_loops () const { return (_flags & JVM_ACC_HAS_LOOPS ) != 0; }
duke@435	106	bool loops_flag_init () const { return (_flags & JVM_ACC_LOOPS_FLAG_INIT ) != 0; }
duke@435	107	bool queued_for_compilation () const { return (_flags & JVM_ACC_QUEUED ) != 0; }
duke@435	108	bool is_not_tier1_compilable () const { return (_flags & JVM_ACC_NOT_TIER1_COMPILABLE ) != 0; }
duke@435	109	bool is_not_osr_compilable () const { return (_flags & JVM_ACC_NOT_OSR_COMPILABLE ) != 0; }
duke@435	110	bool has_linenumber_table () const { return (_flags & JVM_ACC_HAS_LINE_NUMBER_TABLE ) != 0; }
duke@435	111	bool has_checked_exceptions () const { return (_flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; }
duke@435	112	bool has_jsrs () const { return (_flags & JVM_ACC_HAS_JSRS ) != 0; }
duke@435	113	bool is_old () const { return (_flags & JVM_ACC_IS_OLD ) != 0; }
duke@435	114	bool is_obsolete () const { return (_flags & JVM_ACC_IS_OBSOLETE ) != 0; }
duke@435	115	bool is_prefixed_native () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE ) != 0; }
duke@435	116
duke@435	117	// klassOop flags
duke@435	118	bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; }
duke@435	119	bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; }
duke@435	120	bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; }
duke@435	121	bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; }
duke@435	122	bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; }
duke@435	123	// klassOop and methodOop flags
duke@435	124	bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; }
duke@435	125	void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
duke@435	126	void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
duke@435	127
duke@435	128	// field flags
duke@435	129	bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; }
duke@435	130	bool is_field_modification_watched() const
duke@435	131	{ return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; }
duke@435	132
duke@435	133	// get .class file flags
duke@435	134	jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); }
duke@435	135
duke@435	136	// Initialization
duke@435	137	void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); }
duke@435	138	void set_field_flags(jint flags) { _flags = (flags & JVM_ACC_FIELD_FLAGS); }
duke@435	139	void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); }
duke@435	140
duke@435	141	void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); }
duke@435	142	void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); }
duke@435	143
duke@435	144	// Atomic update of flags
duke@435	145	void atomic_set_bits(jint bits);
duke@435	146	void atomic_clear_bits(jint bits);
duke@435	147
duke@435	148	private:
duke@435	149	friend class methodOopDesc;
duke@435	150	friend class Klass;
duke@435	151	friend class ClassFileParser;
duke@435	152	// the functions below should only be called on the _access_flags inst var directly,
duke@435	153	// otherwise they are just changing a copy of the flags
duke@435	154
duke@435	155	// attribute flags
duke@435	156	void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); }
duke@435	157
duke@435	158	// methodOop flags
duke@435	159	void set_monitor_matching() { atomic_set_bits(JVM_ACC_MONITOR_MATCH); }
duke@435	160	void set_has_monitor_bytecodes() { atomic_set_bits(JVM_ACC_HAS_MONITOR_BYTECODES); }
duke@435	161	void set_has_loops() { atomic_set_bits(JVM_ACC_HAS_LOOPS); }
duke@435	162	void set_loops_flag_init() { atomic_set_bits(JVM_ACC_LOOPS_FLAG_INIT); }
duke@435	163	void set_not_tier1_compilable() { atomic_set_bits(JVM_ACC_NOT_TIER1_COMPILABLE); }
duke@435	164	void set_not_osr_compilable() { atomic_set_bits(JVM_ACC_NOT_OSR_COMPILABLE); }
duke@435	165	void set_has_linenumber_table() { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE); }
duke@435	166	void set_has_checked_exceptions() { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS); }
duke@435	167	void set_has_jsrs() { atomic_set_bits(JVM_ACC_HAS_JSRS); }
duke@435	168	void set_is_old() { atomic_set_bits(JVM_ACC_IS_OLD); }
duke@435	169	void set_is_obsolete() { atomic_set_bits(JVM_ACC_IS_OBSOLETE); }
duke@435	170	void set_is_prefixed_native() { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE); }
duke@435	171
duke@435	172	// klassOop flags
duke@435	173	void set_has_vanilla_constructor() { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); }
duke@435	174	void set_has_finalizer() { atomic_set_bits(JVM_ACC_HAS_FINALIZER); }
duke@435	175	void set_has_final_method() { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD); }
duke@435	176	void set_is_cloneable() { atomic_set_bits(JVM_ACC_IS_CLONEABLE); }
duke@435	177	void set_has_miranda_methods() { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS); }
duke@435	178
duke@435	179	public:
duke@435	180	// field flags
duke@435	181	void set_is_field_access_watched(const bool value)
duke@435	182	{
duke@435	183	if (value) {
duke@435	184	atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
duke@435	185	} else {
duke@435	186	atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
duke@435	187	}
duke@435	188	}
duke@435	189	void set_is_field_modification_watched(const bool value)
duke@435	190	{
duke@435	191	if (value) {
duke@435	192	atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
duke@435	193	} else {
duke@435	194	atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
duke@435	195	}
duke@435	196	}
duke@435	197
duke@435	198	// Conversion
duke@435	199	jshort as_short() { return (jshort)_flags; }
duke@435	200	jint as_int() { return _flags; }
duke@435	201
duke@435	202	// Printing/debugging
duke@435	203	void print_on(outputStream* st) const PRODUCT_RETURN;
duke@435	204	};