Mercurial > hg > truffle
diff src/share/vm/utilities/accessFlags.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | e5b0439ef4ae |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/share/vm/utilities/accessFlags.hpp Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,204 @@ +/* + * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + * + */ + +// AccessFlags is an abstraction over Java access flags. + + +enum { + // See jvm.h for shared JVM_ACC_XXX access flags + + // HotSpot-specific access flags + + // flags actually put in .class file + JVM_ACC_WRITTEN_FLAGS = 0x00007FFF, + + // methodOop flags + JVM_ACC_MONITOR_MATCH = 0x10000000, // True if we know that monitorenter/monitorexit bytecodes match + JVM_ACC_HAS_MONITOR_BYTECODES = 0x20000000, // Method contains monitorenter/monitorexit bytecodes + JVM_ACC_HAS_LOOPS = 0x40000000, // Method has loops + JVM_ACC_LOOPS_FLAG_INIT = (int)0x80000000,// The loop flag has been initialized + JVM_ACC_QUEUED = 0x01000000, // Queued for compilation + JVM_ACC_NOT_TIER1_COMPILABLE = 0x04000000, + JVM_ACC_NOT_OSR_COMPILABLE = 0x08000000, + JVM_ACC_HAS_LINE_NUMBER_TABLE = 0x00100000, + JVM_ACC_HAS_CHECKED_EXCEPTIONS = 0x00400000, + JVM_ACC_HAS_JSRS = 0x00800000, + JVM_ACC_IS_OLD = 0x00010000, // RedefineClasses() has replaced this method + JVM_ACC_IS_OBSOLETE = 0x00020000, // RedefineClasses() has made method obsolete + JVM_ACC_IS_PREFIXED_NATIVE = 0x00040000, // JVMTI has prefixed this native method + + // klassOop flags + JVM_ACC_HAS_MIRANDA_METHODS = 0x10000000, // True if this class has miranda methods in it's vtable + JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000, // True if klass has a vanilla default constructor + JVM_ACC_HAS_FINALIZER = 0x40000000, // True if klass has a non-empty finalize() method + JVM_ACC_IS_CLONEABLE = (int)0x80000000,// True if klass supports the Clonable interface + JVM_ACC_HAS_FINAL_METHOD = 0x01000000, // True if klass has final method + + // klassOop and methodOop flags + JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000, + + JVM_ACC_PROMOTED_FLAGS = 0x00200000, // flags promoted from methods to the holding klass + + // field flags + // Note: these flags must be defined in the low order 16 bits because + // instanceKlass only stores a ushort worth of information from the + // AccessFlags value. + // These bits must not conflict with any other field-related access flags + // (e.g., ACC_ENUM). + // Note that the class-related ACC_ANNOTATION bit conflicts with these flags. + JVM_ACC_FIELD_ACCESS_WATCHED = 0x00002000, // field access is watched by JVMTI + JVM_ACC_FIELD_MODIFICATION_WATCHED = 0x00008000, // field modification is watched by JVMTI + + // flags accepted by set_field_flags() + JVM_ACC_FIELD_FLAGS = 0x00008000 | JVM_ACC_WRITTEN_FLAGS +}; + + +class AccessFlags VALUE_OBJ_CLASS_SPEC { + friend class VMStructs; + private: + jint _flags; + + public: + // Java access flags + bool is_public () const { return (_flags & JVM_ACC_PUBLIC ) != 0; } + bool is_private () const { return (_flags & JVM_ACC_PRIVATE ) != 0; } + bool is_protected () const { return (_flags & JVM_ACC_PROTECTED ) != 0; } + bool is_static () const { return (_flags & JVM_ACC_STATIC ) != 0; } + bool is_final () const { return (_flags & JVM_ACC_FINAL ) != 0; } + bool is_synchronized() const { return (_flags & JVM_ACC_SYNCHRONIZED) != 0; } + bool is_super () const { return (_flags & JVM_ACC_SUPER ) != 0; } + bool is_volatile () const { return (_flags & JVM_ACC_VOLATILE ) != 0; } + bool is_transient () const { return (_flags & JVM_ACC_TRANSIENT ) != 0; } + bool is_native () const { return (_flags & JVM_ACC_NATIVE ) != 0; } + bool is_interface () const { return (_flags & JVM_ACC_INTERFACE ) != 0; } + bool is_abstract () const { return (_flags & JVM_ACC_ABSTRACT ) != 0; } + bool is_strict () const { return (_flags & JVM_ACC_STRICT ) != 0; } + + // Attribute flags + bool is_synthetic () const { return (_flags & JVM_ACC_SYNTHETIC ) != 0; } + + // methodOop flags + bool is_monitor_matching () const { return (_flags & JVM_ACC_MONITOR_MATCH ) != 0; } + bool has_monitor_bytecodes () const { return (_flags & JVM_ACC_HAS_MONITOR_BYTECODES ) != 0; } + bool has_loops () const { return (_flags & JVM_ACC_HAS_LOOPS ) != 0; } + bool loops_flag_init () const { return (_flags & JVM_ACC_LOOPS_FLAG_INIT ) != 0; } + bool queued_for_compilation () const { return (_flags & JVM_ACC_QUEUED ) != 0; } + bool is_not_tier1_compilable () const { return (_flags & JVM_ACC_NOT_TIER1_COMPILABLE ) != 0; } + bool is_not_osr_compilable () const { return (_flags & JVM_ACC_NOT_OSR_COMPILABLE ) != 0; } + bool has_linenumber_table () const { return (_flags & JVM_ACC_HAS_LINE_NUMBER_TABLE ) != 0; } + bool has_checked_exceptions () const { return (_flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; } + bool has_jsrs () const { return (_flags & JVM_ACC_HAS_JSRS ) != 0; } + bool is_old () const { return (_flags & JVM_ACC_IS_OLD ) != 0; } + bool is_obsolete () const { return (_flags & JVM_ACC_IS_OBSOLETE ) != 0; } + bool is_prefixed_native () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE ) != 0; } + + // klassOop flags + bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; } + bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; } + bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; } + bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; } + bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; } + // klassOop and methodOop flags + bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; } + void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } + void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } + + // field flags + bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; } + bool is_field_modification_watched() const + { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; } + + // get .class file flags + jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); } + + // Initialization + void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); } + void set_field_flags(jint flags) { _flags = (flags & JVM_ACC_FIELD_FLAGS); } + void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); } + + void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); } + void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); } + + // Atomic update of flags + void atomic_set_bits(jint bits); + void atomic_clear_bits(jint bits); + + private: + friend class methodOopDesc; + friend class Klass; + friend class ClassFileParser; + // the functions below should only be called on the _access_flags inst var directly, + // otherwise they are just changing a copy of the flags + + // attribute flags + void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); } + + // methodOop flags + void set_monitor_matching() { atomic_set_bits(JVM_ACC_MONITOR_MATCH); } + void set_has_monitor_bytecodes() { atomic_set_bits(JVM_ACC_HAS_MONITOR_BYTECODES); } + void set_has_loops() { atomic_set_bits(JVM_ACC_HAS_LOOPS); } + void set_loops_flag_init() { atomic_set_bits(JVM_ACC_LOOPS_FLAG_INIT); } + void set_not_tier1_compilable() { atomic_set_bits(JVM_ACC_NOT_TIER1_COMPILABLE); } + void set_not_osr_compilable() { atomic_set_bits(JVM_ACC_NOT_OSR_COMPILABLE); } + void set_has_linenumber_table() { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE); } + void set_has_checked_exceptions() { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS); } + void set_has_jsrs() { atomic_set_bits(JVM_ACC_HAS_JSRS); } + void set_is_old() { atomic_set_bits(JVM_ACC_IS_OLD); } + void set_is_obsolete() { atomic_set_bits(JVM_ACC_IS_OBSOLETE); } + void set_is_prefixed_native() { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE); } + + // klassOop flags + void set_has_vanilla_constructor() { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); } + void set_has_finalizer() { atomic_set_bits(JVM_ACC_HAS_FINALIZER); } + void set_has_final_method() { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD); } + void set_is_cloneable() { atomic_set_bits(JVM_ACC_IS_CLONEABLE); } + void set_has_miranda_methods() { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS); } + + public: + // field flags + void set_is_field_access_watched(const bool value) + { + if (value) { + atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED); + } else { + atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED); + } + } + void set_is_field_modification_watched(const bool value) + { + if (value) { + atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); + } else { + atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); + } + } + + // Conversion + jshort as_short() { return (jshort)_flags; } + jint as_int() { return _flags; } + + // Printing/debugging + void print_on(outputStream* st) const PRODUCT_RETURN; +};