--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/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;
+};