Mercurial > hg > truffle
annotate src/share/vm/utilities/accessFlags.hpp @ 6100:71afdabfd05b
7168280: Eliminate the generic signature index slot from field array for field without generic signature.
Summary: Only allocate the generic signature index slot in the field array for field with generic signature attribute.
Reviewed-by: coleenp, dlong
| author | jiangli |
|---|---|
| date | Mon, 21 May 2012 14:10:35 -0400 |
| parents | e6b1331a51d2 |
| children | 1d7922586cf6 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1783 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #ifndef SHARE_VM_UTILITIES_ACCESSFLAGS_HPP |
| 26 #define SHARE_VM_UTILITIES_ACCESSFLAGS_HPP | |
| 27 | |
| 28 #include "prims/jvm.h" | |
| 29 #include "utilities/top.hpp" | |
| 30 | |
| 0 | 31 // AccessFlags is an abstraction over Java access flags. |
| 32 | |
| 33 | |
| 34 enum { | |
| 35 // See jvm.h for shared JVM_ACC_XXX access flags | |
| 36 | |
| 37 // HotSpot-specific access flags | |
| 38 | |
| 39 // flags actually put in .class file | |
| 40 JVM_ACC_WRITTEN_FLAGS = 0x00007FFF, | |
| 41 | |
| 42 // methodOop flags | |
| 43 JVM_ACC_MONITOR_MATCH = 0x10000000, // True if we know that monitorenter/monitorexit bytecodes match | |
| 44 JVM_ACC_HAS_MONITOR_BYTECODES = 0x20000000, // Method contains monitorenter/monitorexit bytecodes | |
| 45 JVM_ACC_HAS_LOOPS = 0x40000000, // Method has loops | |
| 46 JVM_ACC_LOOPS_FLAG_INIT = (int)0x80000000,// The loop flag has been initialized | |
| 47 JVM_ACC_QUEUED = 0x01000000, // Queued for compilation | |
| 1783 | 48 JVM_ACC_NOT_C2_COMPILABLE = 0x02000000, |
| 49 JVM_ACC_NOT_C1_COMPILABLE = 0x04000000, | |
| 0 | 50 JVM_ACC_NOT_OSR_COMPILABLE = 0x08000000, |
| 51 JVM_ACC_HAS_LINE_NUMBER_TABLE = 0x00100000, | |
| 52 JVM_ACC_HAS_CHECKED_EXCEPTIONS = 0x00400000, | |
| 53 JVM_ACC_HAS_JSRS = 0x00800000, | |
| 54 JVM_ACC_IS_OLD = 0x00010000, // RedefineClasses() has replaced this method | |
| 55 JVM_ACC_IS_OBSOLETE = 0x00020000, // RedefineClasses() has made method obsolete | |
| 56 JVM_ACC_IS_PREFIXED_NATIVE = 0x00040000, // JVMTI has prefixed this native method | |
| 1783 | 57 |
| 710 | 58 JVM_MH_INVOKE_BITS // = 0x10001100 // MethodHandle.invoke quasi-native |
| 59 = (JVM_ACC_NATIVE | JVM_ACC_SYNTHETIC | JVM_ACC_MONITOR_MATCH), | |
| 0 | 60 |
| 61 // klassOop flags | |
| 62 JVM_ACC_HAS_MIRANDA_METHODS = 0x10000000, // True if this class has miranda methods in it's vtable | |
| 63 JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000, // True if klass has a vanilla default constructor | |
| 64 JVM_ACC_HAS_FINALIZER = 0x40000000, // True if klass has a non-empty finalize() method | |
| 65 JVM_ACC_IS_CLONEABLE = (int)0x80000000,// True if klass supports the Clonable interface | |
| 66 JVM_ACC_HAS_FINAL_METHOD = 0x01000000, // True if klass has final method | |
| 67 | |
| 68 // klassOop and methodOop flags | |
| 69 JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000, | |
| 70 | |
| 71 JVM_ACC_PROMOTED_FLAGS = 0x00200000, // flags promoted from methods to the holding klass | |
| 72 | |
| 73 // field flags | |
| 74 // Note: these flags must be defined in the low order 16 bits because | |
| 75 // instanceKlass only stores a ushort worth of information from the | |
| 76 // AccessFlags value. | |
| 77 // These bits must not conflict with any other field-related access flags | |
| 78 // (e.g., ACC_ENUM). | |
| 79 // Note that the class-related ACC_ANNOTATION bit conflicts with these flags. | |
| 80 JVM_ACC_FIELD_ACCESS_WATCHED = 0x00002000, // field access is watched by JVMTI | |
| 81 JVM_ACC_FIELD_MODIFICATION_WATCHED = 0x00008000, // field modification is watched by JVMTI | |
| 3938 | 82 JVM_ACC_FIELD_INTERNAL = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT |
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83 JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE = 0x00000800, // field has generic signature |
| 3938 | 84 |
| 85 JVM_ACC_FIELD_INTERNAL_FLAGS = JVM_ACC_FIELD_ACCESS_WATCHED | | |
| 86 JVM_ACC_FIELD_MODIFICATION_WATCHED | | |
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87 JVM_ACC_FIELD_INTERNAL | |
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88 JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE, |
| 0 | 89 |
| 90 // flags accepted by set_field_flags() | |
| 3938 | 91 JVM_ACC_FIELD_FLAGS = JVM_RECOGNIZED_FIELD_MODIFIERS | JVM_ACC_FIELD_INTERNAL_FLAGS |
| 710 | 92 |
| 0 | 93 }; |
| 94 | |
| 95 | |
| 96 class AccessFlags VALUE_OBJ_CLASS_SPEC { | |
| 97 friend class VMStructs; | |
| 98 private: | |
| 99 jint _flags; | |
| 100 | |
| 101 public: | |
| 102 // Java access flags | |
| 103 bool is_public () const { return (_flags & JVM_ACC_PUBLIC ) != 0; } | |
| 104 bool is_private () const { return (_flags & JVM_ACC_PRIVATE ) != 0; } | |
| 105 bool is_protected () const { return (_flags & JVM_ACC_PROTECTED ) != 0; } | |
| 106 bool is_static () const { return (_flags & JVM_ACC_STATIC ) != 0; } | |
| 107 bool is_final () const { return (_flags & JVM_ACC_FINAL ) != 0; } | |
| 108 bool is_synchronized() const { return (_flags & JVM_ACC_SYNCHRONIZED) != 0; } | |
| 109 bool is_super () const { return (_flags & JVM_ACC_SUPER ) != 0; } | |
| 110 bool is_volatile () const { return (_flags & JVM_ACC_VOLATILE ) != 0; } | |
| 111 bool is_transient () const { return (_flags & JVM_ACC_TRANSIENT ) != 0; } | |
| 112 bool is_native () const { return (_flags & JVM_ACC_NATIVE ) != 0; } | |
| 113 bool is_interface () const { return (_flags & JVM_ACC_INTERFACE ) != 0; } | |
| 114 bool is_abstract () const { return (_flags & JVM_ACC_ABSTRACT ) != 0; } | |
| 115 bool is_strict () const { return (_flags & JVM_ACC_STRICT ) != 0; } | |
| 116 | |
| 117 // Attribute flags | |
| 118 bool is_synthetic () const { return (_flags & JVM_ACC_SYNTHETIC ) != 0; } | |
| 119 | |
| 120 // methodOop flags | |
| 121 bool is_monitor_matching () const { return (_flags & JVM_ACC_MONITOR_MATCH ) != 0; } | |
| 122 bool has_monitor_bytecodes () const { return (_flags & JVM_ACC_HAS_MONITOR_BYTECODES ) != 0; } | |
| 123 bool has_loops () const { return (_flags & JVM_ACC_HAS_LOOPS ) != 0; } | |
| 124 bool loops_flag_init () const { return (_flags & JVM_ACC_LOOPS_FLAG_INIT ) != 0; } | |
| 125 bool queued_for_compilation () const { return (_flags & JVM_ACC_QUEUED ) != 0; } | |
| 1783 | 126 bool is_not_c1_compilable () const { return (_flags & JVM_ACC_NOT_C1_COMPILABLE ) != 0; } |
| 127 bool is_not_c2_compilable () const { return (_flags & JVM_ACC_NOT_C2_COMPILABLE ) != 0; } | |
| 0 | 128 bool is_not_osr_compilable () const { return (_flags & JVM_ACC_NOT_OSR_COMPILABLE ) != 0; } |
| 129 bool has_linenumber_table () const { return (_flags & JVM_ACC_HAS_LINE_NUMBER_TABLE ) != 0; } | |
| 130 bool has_checked_exceptions () const { return (_flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; } | |
| 131 bool has_jsrs () const { return (_flags & JVM_ACC_HAS_JSRS ) != 0; } | |
| 132 bool is_old () const { return (_flags & JVM_ACC_IS_OLD ) != 0; } | |
| 133 bool is_obsolete () const { return (_flags & JVM_ACC_IS_OBSOLETE ) != 0; } | |
| 134 bool is_prefixed_native () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE ) != 0; } | |
| 135 | |
| 710 | 136 // JSR 292: A method of the form MethodHandle.invoke(A...)R method is |
| 137 // neither bytecoded nor a JNI native, but rather a fast call through | |
| 138 // a lightweight method handle object. Because it is not bytecoded, | |
| 139 // it has the native bit set, but the monitor-match bit is also set | |
| 140 // to distinguish it from a JNI native (which never has the match bit set). | |
| 141 // The synthetic bit is also present, because such a method is never | |
| 142 // explicitly defined in Java code. | |
| 143 bool is_method_handle_invoke () const { return (_flags & JVM_MH_INVOKE_BITS) == JVM_MH_INVOKE_BITS; } | |
| 144 | |
| 0 | 145 // klassOop flags |
| 146 bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; } | |
| 147 bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; } | |
| 148 bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; } | |
| 149 bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; } | |
| 150 bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; } | |
| 151 // klassOop and methodOop flags | |
| 152 bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; } | |
| 153 void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } | |
| 154 void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } | |
| 155 | |
| 156 // field flags | |
| 157 bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; } | |
| 158 bool is_field_modification_watched() const | |
| 159 { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; } | |
| 3938 | 160 bool is_internal() const { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; } |
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parents:
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161 bool field_has_generic_signature() const |
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7168280: Eliminate the generic signature index slot from field array for field without generic signature.
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162 { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; } |
| 0 | 163 |
| 164 // get .class file flags | |
| 165 jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); } | |
| 166 | |
| 167 // Initialization | |
| 168 void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); } | |
| 3938 | 169 void set_field_flags(jint flags) { |
| 170 assert((flags & JVM_ACC_FIELD_FLAGS) == flags, "only recognized flags"); | |
| 171 _flags = (flags & JVM_ACC_FIELD_FLAGS); | |
| 172 } | |
| 0 | 173 void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); } |
| 174 | |
| 175 void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); } | |
| 176 void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); } | |
| 177 | |
| 178 // Atomic update of flags | |
| 179 void atomic_set_bits(jint bits); | |
| 180 void atomic_clear_bits(jint bits); | |
| 181 | |
| 182 private: | |
| 183 friend class methodOopDesc; | |
| 184 friend class Klass; | |
| 185 friend class ClassFileParser; | |
| 186 // the functions below should only be called on the _access_flags inst var directly, | |
| 187 // otherwise they are just changing a copy of the flags | |
| 188 | |
| 189 // attribute flags | |
| 190 void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); } | |
| 191 | |
| 192 // methodOop flags | |
| 193 void set_monitor_matching() { atomic_set_bits(JVM_ACC_MONITOR_MATCH); } | |
| 194 void set_has_monitor_bytecodes() { atomic_set_bits(JVM_ACC_HAS_MONITOR_BYTECODES); } | |
| 195 void set_has_loops() { atomic_set_bits(JVM_ACC_HAS_LOOPS); } | |
| 196 void set_loops_flag_init() { atomic_set_bits(JVM_ACC_LOOPS_FLAG_INIT); } | |
| 1783 | 197 void set_not_c1_compilable() { atomic_set_bits(JVM_ACC_NOT_C1_COMPILABLE); } |
| 198 void set_not_c2_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_COMPILABLE); } | |
| 0 | 199 void set_not_osr_compilable() { atomic_set_bits(JVM_ACC_NOT_OSR_COMPILABLE); } |
| 200 void set_has_linenumber_table() { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE); } | |
| 201 void set_has_checked_exceptions() { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS); } | |
| 202 void set_has_jsrs() { atomic_set_bits(JVM_ACC_HAS_JSRS); } | |
| 203 void set_is_old() { atomic_set_bits(JVM_ACC_IS_OLD); } | |
| 204 void set_is_obsolete() { atomic_set_bits(JVM_ACC_IS_OBSOLETE); } | |
| 205 void set_is_prefixed_native() { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE); } | |
| 206 | |
| 207 // klassOop flags | |
| 208 void set_has_vanilla_constructor() { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); } | |
| 209 void set_has_finalizer() { atomic_set_bits(JVM_ACC_HAS_FINALIZER); } | |
| 210 void set_has_final_method() { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD); } | |
| 211 void set_is_cloneable() { atomic_set_bits(JVM_ACC_IS_CLONEABLE); } | |
| 212 void set_has_miranda_methods() { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS); } | |
| 213 | |
| 214 public: | |
| 215 // field flags | |
| 216 void set_is_field_access_watched(const bool value) | |
| 217 { | |
| 218 if (value) { | |
| 219 atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED); | |
| 220 } else { | |
| 221 atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED); | |
| 222 } | |
| 223 } | |
| 224 void set_is_field_modification_watched(const bool value) | |
| 225 { | |
| 226 if (value) { | |
| 227 atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); | |
| 228 } else { | |
| 229 atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); | |
| 230 } | |
| 231 } | |
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jiangli
parents:
3938
diff
changeset
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232 void set_field_has_generic_signature() |
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233 { |
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234 atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE); |
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71afdabfd05b
7168280: Eliminate the generic signature index slot from field array for field without generic signature.
jiangli
parents:
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235 } |
| 0 | 236 |
| 237 // Conversion | |
| 3938 | 238 jshort as_short() const { return (jshort)_flags; } |
| 239 jint as_int() const { return _flags; } | |
| 0 | 240 |
| 710 | 241 inline friend AccessFlags accessFlags_from(jint flags); |
| 242 | |
| 0 | 243 // Printing/debugging |
| 244 void print_on(outputStream* st) const PRODUCT_RETURN; | |
| 245 }; | |
| 710 | 246 |
| 247 inline AccessFlags accessFlags_from(jint flags) { | |
| 248 AccessFlags af; | |
| 249 af._flags = flags; | |
| 250 return af; | |
| 251 } | |
| 1972 | 252 |
| 253 #endif // SHARE_VM_UTILITIES_ACCESSFLAGS_HPP |