| /* |
| * Copyright (c) 1997, 2015, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| * |
| */ |
| |
| #ifndef SHARE_VM_UTILITIES_ACCESSFLAGS_HPP |
| #define SHARE_VM_UTILITIES_ACCESSFLAGS_HPP |
| |
| #include "prims/jvm.h" |
| #include "utilities/top.hpp" |
| |
| // 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, |
| |
| // Method* 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_C2_COMPILABLE = 0x02000000, |
| JVM_ACC_NOT_C1_COMPILABLE = 0x04000000, |
| JVM_ACC_NOT_C2_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 |
| JVM_ACC_ON_STACK = 0x00080000, // RedefineClasses() was used on the stack |
| JVM_ACC_IS_DELETED = 0x00008000, // RedefineClasses() has deleted this method |
| |
| // Klass* 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 |
| |
| // Klass* and Method* 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 |
| JVM_ACC_FIELD_INTERNAL = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT |
| JVM_ACC_FIELD_STABLE = 0x00000020, // @Stable field, same as JVM_ACC_SYNCHRONIZED and JVM_ACC_SUPER |
| JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE = 0x00000100, // (static) final field updated outside (class) initializer, same as JVM_ACC_NATIVE |
| JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE = 0x00000800, // field has generic signature |
| |
| JVM_ACC_FIELD_INTERNAL_FLAGS = JVM_ACC_FIELD_ACCESS_WATCHED | |
| JVM_ACC_FIELD_MODIFICATION_WATCHED | |
| JVM_ACC_FIELD_INTERNAL | |
| JVM_ACC_FIELD_STABLE | |
| JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE, |
| |
| // flags accepted by set_field_flags() |
| JVM_ACC_FIELD_FLAGS = JVM_RECOGNIZED_FIELD_MODIFIERS | JVM_ACC_FIELD_INTERNAL_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; } |
| |
| // Method* 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_c1_compilable () const { return (_flags & JVM_ACC_NOT_C1_COMPILABLE ) != 0; } |
| bool is_not_c2_compilable () const { return (_flags & JVM_ACC_NOT_C2_COMPILABLE ) != 0; } |
| bool is_not_c2_osr_compilable() const { return (_flags & JVM_ACC_NOT_C2_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_deleted () const { return (_flags & JVM_ACC_IS_DELETED ) != 0; } |
| bool is_prefixed_native () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE ) != 0; } |
| |
| // Klass* 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; } |
| // Klass* and Method* 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; } |
| bool has_field_initialized_final_update() const |
| { return (_flags & JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE) != 0; } |
| bool on_stack() const { return (_flags & JVM_ACC_ON_STACK) != 0; } |
| bool is_internal() const { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; } |
| bool is_stable() const { return (_flags & JVM_ACC_FIELD_STABLE) != 0; } |
| bool field_has_generic_signature() const |
| { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 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) { |
| assert((flags & JVM_ACC_FIELD_FLAGS) == flags, "only recognized 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); |
| bool atomic_set_one_bit(jint bit); |
| void atomic_clear_bits(jint bits); |
| |
| private: |
| friend class Method; |
| 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); } |
| |
| // Method* 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_c1_compilable() { atomic_set_bits(JVM_ACC_NOT_C1_COMPILABLE); } |
| void set_not_c2_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_COMPILABLE); } |
| void set_not_c2_osr_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_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_deleted() { atomic_set_bits(JVM_ACC_IS_DELETED); } |
| void set_is_prefixed_native() { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE); } |
| |
| void clear_not_c1_compilable() { atomic_clear_bits(JVM_ACC_NOT_C1_COMPILABLE); } |
| void clear_not_c2_compilable() { atomic_clear_bits(JVM_ACC_NOT_C2_COMPILABLE); } |
| void clear_not_c2_osr_compilable() { atomic_clear_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE); } |
| // Klass* 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); |
| } |
| } |
| |
| void set_has_field_initialized_final_update(const bool value) { |
| if (value) { |
| atomic_set_bits(JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE); |
| } else { |
| atomic_clear_bits(JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE); |
| } |
| } |
| |
| void set_field_has_generic_signature() |
| { |
| atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE); |
| } |
| |
| bool set_on_stack(const bool value) |
| { |
| if (value) { |
| return atomic_set_one_bit(JVM_ACC_ON_STACK); |
| } else { |
| atomic_clear_bits(JVM_ACC_ON_STACK); |
| return true; // Ignored |
| } |
| } |
| // Conversion |
| jshort as_short() const { return (jshort)_flags; } |
| jint as_int() const { return _flags; } |
| |
| inline friend AccessFlags accessFlags_from(jint flags); |
| |
| // Printing/debugging |
| #if INCLUDE_JVMTI |
| void print_on(outputStream* st) const; |
| #else |
| void print_on(outputStream* st) const PRODUCT_RETURN; |
| #endif |
| }; |
| |
| inline AccessFlags accessFlags_from(jint flags) { |
| AccessFlags af; |
| af._flags = flags; |
| return af; |
| } |
| |
| #endif // SHARE_VM_UTILITIES_ACCESSFLAGS_HPP |
