Mercurial > hg > truffle
annotate src/share/vm/utilities/accessFlags.hpp @ 20619:b12a2a9b05ca
8056240: Investigate increased GC remark time after class unloading changes in CRM Fuse
Reviewed-by: mgerdin, coleenp, bdelsart
| author | stefank |
|---|---|
| date | Thu, 02 Oct 2014 10:55:36 +0200 |
| parents | edb5ab0f3fe5 |
| children |
| rev | line source |
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| 0 | 1 /* |
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2 * Copyright (c) 1997, 2013, 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 | |
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42 // Method* flags |
| 0 | 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, | |
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50 JVM_ACC_NOT_C2_OSR_COMPILABLE = 0x08000000, |
| 0 | 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 | |
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57 JVM_ACC_ON_STACK = 0x00080000, // RedefinedClasses() is used on the stack |
| 1783 | 58 |
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59 // Klass* flags |
| 0 | 60 JVM_ACC_HAS_MIRANDA_METHODS = 0x10000000, // True if this class has miranda methods in it's vtable |
| 61 JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000, // True if klass has a vanilla default constructor | |
| 62 JVM_ACC_HAS_FINALIZER = 0x40000000, // True if klass has a non-empty finalize() method | |
| 63 JVM_ACC_IS_CLONEABLE = (int)0x80000000,// True if klass supports the Clonable interface | |
| 64 JVM_ACC_HAS_FINAL_METHOD = 0x01000000, // True if klass has final method | |
| 65 | |
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66 // Klass* and Method* flags |
| 0 | 67 JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000, |
| 68 | |
| 69 JVM_ACC_PROMOTED_FLAGS = 0x00200000, // flags promoted from methods to the holding klass | |
| 70 | |
| 71 // field flags | |
| 72 // Note: these flags must be defined in the low order 16 bits because | |
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73 // InstanceKlass only stores a ushort worth of information from the |
| 0 | 74 // AccessFlags value. |
| 75 // These bits must not conflict with any other field-related access flags | |
| 76 // (e.g., ACC_ENUM). | |
| 77 // Note that the class-related ACC_ANNOTATION bit conflicts with these flags. | |
| 78 JVM_ACC_FIELD_ACCESS_WATCHED = 0x00002000, // field access is watched by JVMTI | |
| 79 JVM_ACC_FIELD_MODIFICATION_WATCHED = 0x00008000, // field modification is watched by JVMTI | |
| 3938 | 80 JVM_ACC_FIELD_INTERNAL = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT |
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81 JVM_ACC_FIELD_STABLE = 0x00000020, // @Stable field, same as JVM_ACC_SYNCHRONIZED |
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82 JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE = 0x00000800, // field has generic signature |
| 3938 | 83 |
| 84 JVM_ACC_FIELD_INTERNAL_FLAGS = JVM_ACC_FIELD_ACCESS_WATCHED | | |
| 85 JVM_ACC_FIELD_MODIFICATION_WATCHED | | |
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86 JVM_ACC_FIELD_INTERNAL | |
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87 JVM_ACC_FIELD_STABLE | |
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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 | |
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120 // Method* flags |
| 0 | 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; } | |
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126 bool is_not_c1_compilable () const { return (_flags & JVM_ACC_NOT_C1_COMPILABLE ) != 0; } |
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127 bool is_not_c2_compilable () const { return (_flags & JVM_ACC_NOT_C2_COMPILABLE ) != 0; } |
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128 bool is_not_c2_osr_compilable() const { return (_flags & JVM_ACC_NOT_C2_OSR_COMPILABLE ) != 0; } |
| 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 | |
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136 // Klass* flags |
| 0 | 137 bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; } |
| 138 bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; } | |
| 139 bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; } | |
| 140 bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; } | |
| 141 bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; } | |
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142 // Klass* and Method* flags |
| 0 | 143 bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; } |
| 144 void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } | |
| 145 void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); } | |
| 146 | |
| 147 // field flags | |
| 148 bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; } | |
| 149 bool is_field_modification_watched() const | |
| 150 { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; } | |
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151 bool on_stack() const { return (_flags & JVM_ACC_ON_STACK) != 0; } |
| 3938 | 152 bool is_internal() const { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; } |
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153 bool is_stable() const { return (_flags & JVM_ACC_FIELD_STABLE) != 0; } |
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154 bool field_has_generic_signature() const |
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155 { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; } |
| 0 | 156 |
| 157 // get .class file flags | |
| 158 jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); } | |
| 159 | |
| 160 // Initialization | |
| 161 void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); } | |
| 3938 | 162 void set_field_flags(jint flags) { |
| 163 assert((flags & JVM_ACC_FIELD_FLAGS) == flags, "only recognized flags"); | |
| 164 _flags = (flags & JVM_ACC_FIELD_FLAGS); | |
| 165 } | |
| 0 | 166 void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); } |
| 167 | |
| 168 void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); } | |
| 169 void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); } | |
| 170 | |
| 171 // Atomic update of flags | |
| 172 void atomic_set_bits(jint bits); | |
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173 bool atomic_set_one_bit(jint bit); |
| 0 | 174 void atomic_clear_bits(jint bits); |
| 175 | |
| 176 private: | |
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177 friend class Method; |
| 0 | 178 friend class Klass; |
| 179 friend class ClassFileParser; | |
| 180 // the functions below should only be called on the _access_flags inst var directly, | |
| 181 // otherwise they are just changing a copy of the flags | |
| 182 | |
| 183 // attribute flags | |
| 184 void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); } | |
| 185 | |
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186 // Method* flags |
| 0 | 187 void set_monitor_matching() { atomic_set_bits(JVM_ACC_MONITOR_MATCH); } |
| 188 void set_has_monitor_bytecodes() { atomic_set_bits(JVM_ACC_HAS_MONITOR_BYTECODES); } | |
| 189 void set_has_loops() { atomic_set_bits(JVM_ACC_HAS_LOOPS); } | |
| 190 void set_loops_flag_init() { atomic_set_bits(JVM_ACC_LOOPS_FLAG_INIT); } | |
| 1783 | 191 void set_not_c1_compilable() { atomic_set_bits(JVM_ACC_NOT_C1_COMPILABLE); } |
| 192 void set_not_c2_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_COMPILABLE); } | |
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193 void set_not_c2_osr_compilable() { atomic_set_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE); } |
| 0 | 194 void set_has_linenumber_table() { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE); } |
| 195 void set_has_checked_exceptions() { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS); } | |
| 196 void set_has_jsrs() { atomic_set_bits(JVM_ACC_HAS_JSRS); } | |
| 197 void set_is_old() { atomic_set_bits(JVM_ACC_IS_OLD); } | |
| 198 void set_is_obsolete() { atomic_set_bits(JVM_ACC_IS_OBSOLETE); } | |
| 199 void set_is_prefixed_native() { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE); } | |
| 200 | |
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201 void clear_not_c1_compilable() { atomic_clear_bits(JVM_ACC_NOT_C1_COMPILABLE); } |
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202 void clear_not_c2_compilable() { atomic_clear_bits(JVM_ACC_NOT_C2_COMPILABLE); } |
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203 void clear_not_c2_osr_compilable() { atomic_clear_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE); } |
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204 // Klass* flags |
| 0 | 205 void set_has_vanilla_constructor() { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); } |
| 206 void set_has_finalizer() { atomic_set_bits(JVM_ACC_HAS_FINALIZER); } | |
| 207 void set_has_final_method() { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD); } | |
| 208 void set_is_cloneable() { atomic_set_bits(JVM_ACC_IS_CLONEABLE); } | |
| 209 void set_has_miranda_methods() { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS); } | |
| 210 | |
| 211 public: | |
| 212 // field flags | |
| 213 void set_is_field_access_watched(const bool value) | |
| 214 { | |
| 215 if (value) { | |
| 216 atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED); | |
| 217 } else { | |
| 218 atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED); | |
| 219 } | |
| 220 } | |
| 221 void set_is_field_modification_watched(const bool value) | |
| 222 { | |
| 223 if (value) { | |
| 224 atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); | |
| 225 } else { | |
| 226 atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED); | |
| 227 } | |
| 228 } | |
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229 void set_field_has_generic_signature() |
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230 { |
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231 atomic_set_bits(JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE); |
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232 } |
| 0 | 233 |
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234 bool set_on_stack(const bool value) |
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235 { |
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236 if (value) { |
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237 return atomic_set_one_bit(JVM_ACC_ON_STACK); |
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238 } else { |
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239 atomic_clear_bits(JVM_ACC_ON_STACK); |
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240 return true; // Ignored |
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241 } |
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242 } |
| 0 | 243 // Conversion |
| 3938 | 244 jshort as_short() const { return (jshort)_flags; } |
| 245 jint as_int() const { return _flags; } | |
| 0 | 246 |
| 710 | 247 inline friend AccessFlags accessFlags_from(jint flags); |
| 248 | |
| 0 | 249 // Printing/debugging |
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250 #if INCLUDE_JVMTI |
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251 void print_on(outputStream* st) const; |
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252 #else |
| 0 | 253 void print_on(outputStream* st) const PRODUCT_RETURN; |
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254 #endif |
| 0 | 255 }; |
| 710 | 256 |
| 257 inline AccessFlags accessFlags_from(jint flags) { | |
| 258 AccessFlags af; | |
| 259 af._flags = flags; | |
| 260 return af; | |
| 261 } | |
| 1972 | 262 |
| 263 #endif // SHARE_VM_UTILITIES_ACCESSFLAGS_HPP |