aoqi@0: /* aoqi@0: * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. aoqi@0: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. aoqi@0: * aoqi@0: * This code is free software; you can redistribute it and/or modify it aoqi@0: * under the terms of the GNU General Public License version 2 only, as aoqi@0: * published by the Free Software Foundation. aoqi@0: * aoqi@0: * This code is distributed in the hope that it will be useful, but WITHOUT aoqi@0: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or aoqi@0: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License aoqi@0: * version 2 for more details (a copy is included in the LICENSE file that aoqi@0: * accompanied this code). aoqi@0: * aoqi@0: * You should have received a copy of the GNU General Public License version aoqi@0: * 2 along with this work; if not, write to the Free Software Foundation, aoqi@0: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. aoqi@0: * aoqi@0: * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA aoqi@0: * or visit www.oracle.com if you need additional information or have any aoqi@0: * questions. aoqi@0: * aoqi@0: */ aoqi@0: aoqi@0: #ifndef SHARE_VM_UTILITIES_ACCESSFLAGS_HPP aoqi@0: #define SHARE_VM_UTILITIES_ACCESSFLAGS_HPP aoqi@0: aoqi@0: #include "prims/jvm.h" aoqi@0: #include "utilities/top.hpp" aoqi@0: aoqi@0: // AccessFlags is an abstraction over Java access flags. aoqi@0: aoqi@0: aoqi@0: enum { aoqi@0: // See jvm.h for shared JVM_ACC_XXX access flags aoqi@0: aoqi@0: // HotSpot-specific access flags aoqi@0: aoqi@0: // flags actually put in .class file aoqi@0: JVM_ACC_WRITTEN_FLAGS = 0x00007FFF, aoqi@0: aoqi@0: // Method* flags aoqi@0: JVM_ACC_MONITOR_MATCH = 0x10000000, // True if we know that monitorenter/monitorexit bytecodes match aoqi@0: JVM_ACC_HAS_MONITOR_BYTECODES = 0x20000000, // Method contains monitorenter/monitorexit bytecodes aoqi@0: JVM_ACC_HAS_LOOPS = 0x40000000, // Method has loops aoqi@0: JVM_ACC_LOOPS_FLAG_INIT = (int)0x80000000,// The loop flag has been initialized aoqi@0: JVM_ACC_QUEUED = 0x01000000, // Queued for compilation aoqi@0: JVM_ACC_NOT_C2_COMPILABLE = 0x02000000, aoqi@0: JVM_ACC_NOT_C1_COMPILABLE = 0x04000000, aoqi@0: JVM_ACC_NOT_C2_OSR_COMPILABLE = 0x08000000, aoqi@0: JVM_ACC_HAS_LINE_NUMBER_TABLE = 0x00100000, aoqi@0: JVM_ACC_HAS_CHECKED_EXCEPTIONS = 0x00400000, aoqi@0: JVM_ACC_HAS_JSRS = 0x00800000, aoqi@0: JVM_ACC_IS_OLD = 0x00010000, // RedefineClasses() has replaced this method aoqi@0: JVM_ACC_IS_OBSOLETE = 0x00020000, // RedefineClasses() has made method obsolete aoqi@0: JVM_ACC_IS_PREFIXED_NATIVE = 0x00040000, // JVMTI has prefixed this native method aoqi@0: JVM_ACC_ON_STACK = 0x00080000, // RedefinedClasses() is used on the stack aoqi@0: aoqi@0: // Klass* flags aoqi@0: JVM_ACC_HAS_MIRANDA_METHODS = 0x10000000, // True if this class has miranda methods in it's vtable aoqi@0: JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000, // True if klass has a vanilla default constructor aoqi@0: JVM_ACC_HAS_FINALIZER = 0x40000000, // True if klass has a non-empty finalize() method aoqi@0: JVM_ACC_IS_CLONEABLE = (int)0x80000000,// True if klass supports the Clonable interface aoqi@0: JVM_ACC_HAS_FINAL_METHOD = 0x01000000, // True if klass has final method aoqi@0: aoqi@0: // Klass* and Method* flags aoqi@0: JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000, aoqi@0: aoqi@0: JVM_ACC_PROMOTED_FLAGS = 0x00200000, // flags promoted from methods to the holding klass aoqi@0: aoqi@0: // field flags aoqi@0: // Note: these flags must be defined in the low order 16 bits because aoqi@0: // InstanceKlass only stores a ushort worth of information from the aoqi@0: // AccessFlags value. aoqi@0: // These bits must not conflict with any other field-related access flags aoqi@0: // (e.g., ACC_ENUM). aoqi@0: // Note that the class-related ACC_ANNOTATION bit conflicts with these flags. aoqi@0: JVM_ACC_FIELD_ACCESS_WATCHED = 0x00002000, // field access is watched by JVMTI aoqi@0: JVM_ACC_FIELD_MODIFICATION_WATCHED = 0x00008000, // field modification is watched by JVMTI aoqi@0: JVM_ACC_FIELD_INTERNAL = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT aoqi@0: JVM_ACC_FIELD_STABLE = 0x00000020, // @Stable field, same as JVM_ACC_SYNCHRONIZED aoqi@0: JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE = 0x00000800, // field has generic signature aoqi@0: aoqi@0: JVM_ACC_FIELD_INTERNAL_FLAGS = JVM_ACC_FIELD_ACCESS_WATCHED | aoqi@0: JVM_ACC_FIELD_MODIFICATION_WATCHED | aoqi@0: JVM_ACC_FIELD_INTERNAL | aoqi@0: JVM_ACC_FIELD_STABLE | aoqi@0: JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE, aoqi@0: aoqi@0: // flags accepted by set_field_flags() aoqi@0: JVM_ACC_FIELD_FLAGS = JVM_RECOGNIZED_FIELD_MODIFIERS | JVM_ACC_FIELD_INTERNAL_FLAGS aoqi@0: aoqi@0: }; aoqi@0: aoqi@0: aoqi@0: class AccessFlags VALUE_OBJ_CLASS_SPEC { aoqi@0: friend class VMStructs; aoqi@0: private: aoqi@0: jint _flags; aoqi@0: aoqi@0: public: aoqi@0: // Java access flags aoqi@0: bool is_public () const { return (_flags & JVM_ACC_PUBLIC ) != 0; } aoqi@0: bool is_private () const { return (_flags & JVM_ACC_PRIVATE ) != 0; } aoqi@0: bool is_protected () const { return (_flags & JVM_ACC_PROTECTED ) != 0; } aoqi@0: bool is_static () const { return (_flags & JVM_ACC_STATIC ) != 0; } aoqi@0: bool is_final () const { return (_flags & JVM_ACC_FINAL ) != 0; } aoqi@0: bool is_synchronized() const { return (_flags & JVM_ACC_SYNCHRONIZED) != 0; } aoqi@0: bool is_super () const { return (_flags & JVM_ACC_SUPER ) != 0; } aoqi@0: bool is_volatile () const { return (_flags & JVM_ACC_VOLATILE ) != 0; } aoqi@0: bool is_transient () const { return (_flags & JVM_ACC_TRANSIENT ) != 0; } aoqi@0: bool is_native () const { return (_flags & JVM_ACC_NATIVE ) != 0; } aoqi@0: bool is_interface () const { return (_flags & JVM_ACC_INTERFACE ) != 0; } aoqi@0: bool is_abstract () const { return (_flags & JVM_ACC_ABSTRACT ) != 0; } aoqi@0: bool is_strict () const { return (_flags & JVM_ACC_STRICT ) != 0; } aoqi@0: aoqi@0: // Attribute flags aoqi@0: bool is_synthetic () const { return (_flags & JVM_ACC_SYNTHETIC ) != 0; } aoqi@0: aoqi@0: // Method* flags aoqi@0: bool is_monitor_matching () const { return (_flags & JVM_ACC_MONITOR_MATCH ) != 0; } aoqi@0: bool has_monitor_bytecodes () const { return (_flags & JVM_ACC_HAS_MONITOR_BYTECODES ) != 0; } aoqi@0: bool has_loops () const { return (_flags & JVM_ACC_HAS_LOOPS ) != 0; } aoqi@0: bool loops_flag_init () const { return (_flags & JVM_ACC_LOOPS_FLAG_INIT ) != 0; } aoqi@0: bool queued_for_compilation () const { return (_flags & JVM_ACC_QUEUED ) != 0; } aoqi@0: bool is_not_c1_compilable () const { return (_flags & JVM_ACC_NOT_C1_COMPILABLE ) != 0; } aoqi@0: bool is_not_c2_compilable () const { return (_flags & JVM_ACC_NOT_C2_COMPILABLE ) != 0; } aoqi@0: bool is_not_c2_osr_compilable() const { return (_flags & JVM_ACC_NOT_C2_OSR_COMPILABLE ) != 0; } aoqi@0: bool has_linenumber_table () const { return (_flags & JVM_ACC_HAS_LINE_NUMBER_TABLE ) != 0; } aoqi@0: bool has_checked_exceptions () const { return (_flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; } aoqi@0: bool has_jsrs () const { return (_flags & JVM_ACC_HAS_JSRS ) != 0; } aoqi@0: bool is_old () const { return (_flags & JVM_ACC_IS_OLD ) != 0; } aoqi@0: bool is_obsolete () const { return (_flags & JVM_ACC_IS_OBSOLETE ) != 0; } aoqi@0: bool is_prefixed_native () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE ) != 0; } aoqi@0: aoqi@0: // Klass* flags aoqi@0: bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; } aoqi@0: bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; } aoqi@0: bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; } aoqi@0: bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; } aoqi@0: bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; } aoqi@0: // Klass* and Method* flags aoqi@0: bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; } aoqi@0: void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } aoqi@0: void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } aoqi@0: aoqi@0: // field flags aoqi@0: bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; } aoqi@0: bool is_field_modification_watched() const aoqi@0: { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; } aoqi@0: bool on_stack() const { return (_flags & JVM_ACC_ON_STACK) != 0; } aoqi@0: bool is_internal() const { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; } aoqi@0: bool is_stable() const { return (_flags & JVM_ACC_FIELD_STABLE) != 0; } aoqi@0: bool field_has_generic_signature() const aoqi@0: { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; } aoqi@0: aoqi@0: // get .class file flags aoqi@0: jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); } aoqi@0: aoqi@0: // Initialization aoqi@0: void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); } aoqi@0: void set_field_flags(jint flags) { aoqi@0: assert((flags & JVM_ACC_FIELD_FLAGS) == flags, "only recognized flags"); aoqi@0: _flags = (flags & JVM_ACC_FIELD_FLAGS); aoqi@0: } aoqi@0: void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); } aoqi@0: aoqi@0: void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); } aoqi@0: void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); } aoqi@0: aoqi@0: // Atomic update of flags aoqi@0: void atomic_set_bits(jint bits); aoqi@0: void atomic_clear_bits(jint bits); aoqi@0: aoqi@0: private: aoqi@0: friend class Method; aoqi@0: friend class Klass; aoqi@0: friend class ClassFileParser; aoqi@0: // the functions below should only be called on the _access_flags inst var directly, aoqi@0: // otherwise they are just changing a copy of the flags aoqi@0: aoqi@0: // attribute flags aoqi@0: void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); } aoqi@0: aoqi@0: // Method* flags aoqi@0: void set_monitor_matching() { atomic_set_bits(JVM_ACC_MONITOR_MATCH); } aoqi@0: void set_has_monitor_bytecodes() { atomic_set_bits(JVM_ACC_HAS_MONITOR_BYTECODES); } aoqi@0: void set_has_loops() { atomic_set_bits(JVM_ACC_HAS_LOOPS); } aoqi@0: void set_loops_flag_init() { atomic_set_bits(JVM_ACC_LOOPS_FLAG_INIT); } aoqi@0: void set_not_c1_compilable() { atomic_set_bits(JVM_ACC_NOT_C1_COMPILABLE); } aoqi@0: void set_not_c2_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_COMPILABLE); } aoqi@0: void set_not_c2_osr_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE); } aoqi@0: void set_has_linenumber_table() { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE); } aoqi@0: void set_has_checked_exceptions() { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS); } aoqi@0: void set_has_jsrs() { atomic_set_bits(JVM_ACC_HAS_JSRS); } aoqi@0: void set_is_old() { atomic_set_bits(JVM_ACC_IS_OLD); } aoqi@0: void set_is_obsolete() { atomic_set_bits(JVM_ACC_IS_OBSOLETE); } aoqi@0: void set_is_prefixed_native() { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE); } aoqi@0: aoqi@0: void clear_not_c1_compilable() { atomic_clear_bits(JVM_ACC_NOT_C1_COMPILABLE); } aoqi@0: void clear_not_c2_compilable() { atomic_clear_bits(JVM_ACC_NOT_C2_COMPILABLE); } aoqi@0: void clear_not_c2_osr_compilable() { atomic_clear_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE); } aoqi@0: // Klass* flags aoqi@0: void set_has_vanilla_constructor() { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); } aoqi@0: void set_has_finalizer() { atomic_set_bits(JVM_ACC_HAS_FINALIZER); } aoqi@0: void set_has_final_method() { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD); } aoqi@0: void set_is_cloneable() { atomic_set_bits(JVM_ACC_IS_CLONEABLE); } aoqi@0: void set_has_miranda_methods() { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS); } aoqi@0: aoqi@0: public: aoqi@0: // field flags aoqi@0: void set_is_field_access_watched(const bool value) aoqi@0: { aoqi@0: if (value) { aoqi@0: atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED); aoqi@0: } else { aoqi@0: atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED); aoqi@0: } aoqi@0: } aoqi@0: void set_is_field_modification_watched(const bool value) aoqi@0: { aoqi@0: if (value) { aoqi@0: atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); aoqi@0: } else { aoqi@0: atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); aoqi@0: } aoqi@0: } aoqi@0: void set_field_has_generic_signature() aoqi@0: { aoqi@0: atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE); aoqi@0: } aoqi@0: aoqi@0: void set_on_stack(const bool value) aoqi@0: { aoqi@0: if (value) { aoqi@0: atomic_set_bits(JVM_ACC_ON_STACK); aoqi@0: } else { aoqi@0: atomic_clear_bits(JVM_ACC_ON_STACK); aoqi@0: } aoqi@0: } aoqi@0: // Conversion aoqi@0: jshort as_short() const { return (jshort)_flags; } aoqi@0: jint as_int() const { return _flags; } aoqi@0: aoqi@0: inline friend AccessFlags accessFlags_from(jint flags); aoqi@0: aoqi@0: // Printing/debugging aoqi@0: #if INCLUDE_JVMTI aoqi@0: void print_on(outputStream* st) const; aoqi@0: #else aoqi@0: void print_on(outputStream* st) const PRODUCT_RETURN; aoqi@0: #endif aoqi@0: }; aoqi@0: aoqi@0: inline AccessFlags accessFlags_from(jint flags) { aoqi@0: AccessFlags af; aoqi@0: af._flags = flags; aoqi@0: return af; aoqi@0: } aoqi@0: aoqi@0: #endif // SHARE_VM_UTILITIES_ACCESSFLAGS_HPP