Mercurial > hg > truffle
diff src/share/vm/utilities/accessFlags.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | 1d7922586cf6 |
| children | 9191895df19d |
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--- a/src/share/vm/utilities/accessFlags.hpp Fri Aug 31 16:39:35 2012 -0700 +++ b/src/share/vm/utilities/accessFlags.hpp Sat Sep 01 13:25:18 2012 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2012, 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 @@ -39,7 +39,7 @@ // flags actually put in .class file JVM_ACC_WRITTEN_FLAGS = 0x00007FFF, - // methodOop flags + // 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 @@ -54,22 +54,23 @@ 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, // RedefinedClasses() is used on the stack - // klassOop flags + // 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 - // klassOop and methodOop flags + // 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 + // 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). @@ -114,7 +115,7 @@ // Attribute flags bool is_synthetic () const { return (_flags & JVM_ACC_SYNTHETIC ) != 0; } - // methodOop flags + // 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; } @@ -130,13 +131,13 @@ 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 + // 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; } - // klassOop and methodOop flags + // 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); } @@ -145,6 +146,7 @@ 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 on_stack() const { return (_flags & JVM_ACC_ON_STACK) != 0; } bool is_internal() const { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; } bool field_has_generic_signature() const { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; } @@ -168,7 +170,7 @@ void atomic_clear_bits(jint bits); private: - friend class methodOopDesc; + friend class Method; friend class Klass; friend class ClassFileParser; // the functions below should only be called on the _access_flags inst var directly, @@ -177,7 +179,7 @@ // attribute flags void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); } - // methodOop flags + // 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); } @@ -192,7 +194,7 @@ 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 + // 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); } @@ -222,6 +224,14 @@ atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE); } + void set_on_stack(const bool value) + { + if (value) { + atomic_set_bits(JVM_ACC_ON_STACK); + } else { + atomic_clear_bits(JVM_ACC_ON_STACK); + } + } // Conversion jshort as_short() const { return (jshort)_flags; } jint as_int() const { return _flags; }