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src/hotspot/share/utilities/accessFlags.hpp

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rev 58565 : 8238358: Implementation of JEP 371: Hidden Classes
Reviewed-by: duke
Contributed-by: mandy.chung@oracle.com, lois.foltan@oracle.com, david.holmes@oracle.com, harold.seigel@oracle.com, serguei.spitsyn@oracle.com, alex.buckley@oracle.com, jamsheed.c.m@oracle.com


  49   JVM_ACC_QUEUED                  = 0x01000000,     // Queued for compilation
  50   JVM_ACC_NOT_C2_COMPILABLE       = 0x02000000,
  51   JVM_ACC_NOT_C1_COMPILABLE       = 0x04000000,
  52   JVM_ACC_NOT_C2_OSR_COMPILABLE   = 0x08000000,
  53   JVM_ACC_HAS_LINE_NUMBER_TABLE   = 0x00100000,
  54   JVM_ACC_HAS_CHECKED_EXCEPTIONS  = 0x00400000,
  55   JVM_ACC_HAS_JSRS                = 0x00800000,
  56   JVM_ACC_IS_OLD                  = 0x00010000,     // RedefineClasses() has replaced this method
  57   JVM_ACC_IS_OBSOLETE             = 0x00020000,     // RedefineClasses() has made method obsolete
  58   JVM_ACC_IS_PREFIXED_NATIVE      = 0x00040000,     // JVMTI has prefixed this native method
  59   JVM_ACC_ON_STACK                = 0x00080000,     // RedefineClasses() was used on the stack
  60   JVM_ACC_IS_DELETED              = 0x00008000,     // RedefineClasses() has deleted this method
  61 
  62   // Klass* flags
  63   JVM_ACC_HAS_MIRANDA_METHODS     = 0x10000000,     // True if this class has miranda methods in it's vtable
  64   JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000,     // True if klass has a vanilla default constructor
  65   JVM_ACC_HAS_FINALIZER           = 0x40000000,     // True if klass has a non-empty finalize() method
  66   JVM_ACC_IS_CLONEABLE_FAST       = (int)0x80000000,// True if klass implements the Cloneable interface and can be optimized in generated code
  67   JVM_ACC_HAS_FINAL_METHOD        = 0x01000000,     // True if klass has final method
  68   JVM_ACC_IS_SHARED_CLASS         = 0x02000000,     // True if klass is shared

  69 
  70   // Klass* and Method* flags
  71   JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000,
  72 
  73   JVM_ACC_PROMOTED_FLAGS          = 0x00200000,     // flags promoted from methods to the holding klass
  74 
  75   // field flags
  76   // Note: these flags must be defined in the low order 16 bits because
  77   // InstanceKlass only stores a ushort worth of information from the
  78   // AccessFlags value.
  79   // These bits must not conflict with any other field-related access flags
  80   // (e.g., ACC_ENUM).
  81   // Note that the class-related ACC_ANNOTATION bit conflicts with these flags.
  82   JVM_ACC_FIELD_ACCESS_WATCHED            = 0x00002000, // field access is watched by JVMTI
  83   JVM_ACC_FIELD_MODIFICATION_WATCHED      = 0x00008000, // field modification is watched by JVMTI
  84   JVM_ACC_FIELD_INTERNAL                  = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT
  85   JVM_ACC_FIELD_STABLE                    = 0x00000020, // @Stable field, same as JVM_ACC_SYNCHRONIZED and JVM_ACC_SUPER
  86   JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE  = 0x00000100, // (static) final field updated outside (class) initializer, same as JVM_ACC_NATIVE
  87   JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE     = 0x00000800, // field has generic signature
  88 


 132   bool loops_flag_init         () const { return (_flags & JVM_ACC_LOOPS_FLAG_INIT        ) != 0; }
 133   bool queued_for_compilation  () const { return (_flags & JVM_ACC_QUEUED                 ) != 0; }
 134   bool is_not_c1_compilable    () const { return (_flags & JVM_ACC_NOT_C1_COMPILABLE      ) != 0; }
 135   bool is_not_c2_compilable    () const { return (_flags & JVM_ACC_NOT_C2_COMPILABLE      ) != 0; }
 136   bool is_not_c2_osr_compilable() const { return (_flags & JVM_ACC_NOT_C2_OSR_COMPILABLE  ) != 0; }
 137   bool has_linenumber_table    () const { return (_flags & JVM_ACC_HAS_LINE_NUMBER_TABLE  ) != 0; }
 138   bool has_checked_exceptions  () const { return (_flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; }
 139   bool has_jsrs                () const { return (_flags & JVM_ACC_HAS_JSRS               ) != 0; }
 140   bool is_old                  () const { return (_flags & JVM_ACC_IS_OLD                 ) != 0; }
 141   bool is_obsolete             () const { return (_flags & JVM_ACC_IS_OBSOLETE            ) != 0; }
 142   bool is_deleted              () const { return (_flags & JVM_ACC_IS_DELETED             ) != 0; }
 143   bool is_prefixed_native      () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE     ) != 0; }
 144 
 145   // Klass* 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_fast       () const { return (_flags & JVM_ACC_IS_CLONEABLE_FAST      ) != 0; }
 151   bool is_shared_class         () const { return (_flags & JVM_ACC_IS_SHARED_CLASS        ) != 0; }

 152 
 153   // Klass* and Method* flags
 154   bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; }
 155   void set_has_localvariable_table()    { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
 156   void clear_has_localvariable_table()  { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
 157 
 158   // field flags
 159   bool is_field_access_watched() const  { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; }
 160   bool is_field_modification_watched() const
 161                                         { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; }
 162   bool has_field_initialized_final_update() const
 163                                         { return (_flags & JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE) != 0; }
 164   bool on_stack() const                 { return (_flags & JVM_ACC_ON_STACK) != 0; }
 165   bool is_internal() const              { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; }
 166   bool is_stable() const                { return (_flags & JVM_ACC_FIELD_STABLE) != 0; }
 167   bool field_has_generic_signature() const
 168                                         { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; }
 169 
 170   // get .class file flags
 171   jint get_flags               () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); }


 204   void set_not_c2_compilable()         { atomic_set_bits(JVM_ACC_NOT_C2_COMPILABLE);       }
 205   void set_not_c2_osr_compilable()     { atomic_set_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE);   }
 206   void set_has_linenumber_table()      { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE);   }
 207   void set_has_checked_exceptions()    { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS);  }
 208   void set_has_jsrs()                  { atomic_set_bits(JVM_ACC_HAS_JSRS);                }
 209   void set_is_old()                    { atomic_set_bits(JVM_ACC_IS_OLD);                  }
 210   void set_is_obsolete()               { atomic_set_bits(JVM_ACC_IS_OBSOLETE);             }
 211   void set_is_deleted()                { atomic_set_bits(JVM_ACC_IS_DELETED);              }
 212   void set_is_prefixed_native()        { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE);      }
 213 
 214   void clear_not_c1_compilable()       { atomic_clear_bits(JVM_ACC_NOT_C1_COMPILABLE);       }
 215   void clear_not_c2_compilable()       { atomic_clear_bits(JVM_ACC_NOT_C2_COMPILABLE);       }
 216   void clear_not_c2_osr_compilable()   { atomic_clear_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE);   }
 217   // Klass* flags
 218   void set_has_vanilla_constructor()   { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); }
 219   void set_has_finalizer()             { atomic_set_bits(JVM_ACC_HAS_FINALIZER);           }
 220   void set_has_final_method()          { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD);        }
 221   void set_is_cloneable_fast()         { atomic_set_bits(JVM_ACC_IS_CLONEABLE_FAST);       }
 222   void set_has_miranda_methods()       { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS);     }
 223   void set_is_shared_class()           { atomic_set_bits(JVM_ACC_IS_SHARED_CLASS);         }

 224 
 225  public:
 226   // field flags
 227   void set_is_field_access_watched(const bool value)
 228                                        {
 229                                          if (value) {
 230                                            atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
 231                                          } else {
 232                                            atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
 233                                          }
 234                                        }
 235   void set_is_field_modification_watched(const bool value)
 236                                        {
 237                                          if (value) {
 238                                            atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
 239                                          } else {
 240                                            atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
 241                                          }
 242                                        }
 243 




  49   JVM_ACC_QUEUED                  = 0x01000000,     // Queued for compilation
  50   JVM_ACC_NOT_C2_COMPILABLE       = 0x02000000,
  51   JVM_ACC_NOT_C1_COMPILABLE       = 0x04000000,
  52   JVM_ACC_NOT_C2_OSR_COMPILABLE   = 0x08000000,
  53   JVM_ACC_HAS_LINE_NUMBER_TABLE   = 0x00100000,
  54   JVM_ACC_HAS_CHECKED_EXCEPTIONS  = 0x00400000,
  55   JVM_ACC_HAS_JSRS                = 0x00800000,
  56   JVM_ACC_IS_OLD                  = 0x00010000,     // RedefineClasses() has replaced this method
  57   JVM_ACC_IS_OBSOLETE             = 0x00020000,     // RedefineClasses() has made method obsolete
  58   JVM_ACC_IS_PREFIXED_NATIVE      = 0x00040000,     // JVMTI has prefixed this native method
  59   JVM_ACC_ON_STACK                = 0x00080000,     // RedefineClasses() was used on the stack
  60   JVM_ACC_IS_DELETED              = 0x00008000,     // RedefineClasses() has deleted this method
  61 
  62   // Klass* flags
  63   JVM_ACC_HAS_MIRANDA_METHODS     = 0x10000000,     // True if this class has miranda methods in it's vtable
  64   JVM_ACC_HAS_VANILLA_CONSTRUCTOR = 0x20000000,     // True if klass has a vanilla default constructor
  65   JVM_ACC_HAS_FINALIZER           = 0x40000000,     // True if klass has a non-empty finalize() method
  66   JVM_ACC_IS_CLONEABLE_FAST       = (int)0x80000000,// True if klass implements the Cloneable interface and can be optimized in generated code
  67   JVM_ACC_HAS_FINAL_METHOD        = 0x01000000,     // True if klass has final method
  68   JVM_ACC_IS_SHARED_CLASS         = 0x02000000,     // True if klass is shared
  69   JVM_ACC_IS_HIDDEN_CLASS         = 0x04000000,     // True if klass is hidden 
  70 
  71   // Klass* and Method* flags
  72   JVM_ACC_HAS_LOCAL_VARIABLE_TABLE= 0x00200000,
  73 
  74   JVM_ACC_PROMOTED_FLAGS          = 0x00200000,     // flags promoted from methods to the holding klass
  75 
  76   // field flags
  77   // Note: these flags must be defined in the low order 16 bits because
  78   // InstanceKlass only stores a ushort worth of information from the
  79   // AccessFlags value.
  80   // These bits must not conflict with any other field-related access flags
  81   // (e.g., ACC_ENUM).
  82   // Note that the class-related ACC_ANNOTATION bit conflicts with these flags.
  83   JVM_ACC_FIELD_ACCESS_WATCHED            = 0x00002000, // field access is watched by JVMTI
  84   JVM_ACC_FIELD_MODIFICATION_WATCHED      = 0x00008000, // field modification is watched by JVMTI
  85   JVM_ACC_FIELD_INTERNAL                  = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT
  86   JVM_ACC_FIELD_STABLE                    = 0x00000020, // @Stable field, same as JVM_ACC_SYNCHRONIZED and JVM_ACC_SUPER
  87   JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE  = 0x00000100, // (static) final field updated outside (class) initializer, same as JVM_ACC_NATIVE
  88   JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE     = 0x00000800, // field has generic signature
  89 


 133   bool loops_flag_init         () const { return (_flags & JVM_ACC_LOOPS_FLAG_INIT        ) != 0; }
 134   bool queued_for_compilation  () const { return (_flags & JVM_ACC_QUEUED                 ) != 0; }
 135   bool is_not_c1_compilable    () const { return (_flags & JVM_ACC_NOT_C1_COMPILABLE      ) != 0; }
 136   bool is_not_c2_compilable    () const { return (_flags & JVM_ACC_NOT_C2_COMPILABLE      ) != 0; }
 137   bool is_not_c2_osr_compilable() const { return (_flags & JVM_ACC_NOT_C2_OSR_COMPILABLE  ) != 0; }
 138   bool has_linenumber_table    () const { return (_flags & JVM_ACC_HAS_LINE_NUMBER_TABLE  ) != 0; }
 139   bool has_checked_exceptions  () const { return (_flags & JVM_ACC_HAS_CHECKED_EXCEPTIONS ) != 0; }
 140   bool has_jsrs                () const { return (_flags & JVM_ACC_HAS_JSRS               ) != 0; }
 141   bool is_old                  () const { return (_flags & JVM_ACC_IS_OLD                 ) != 0; }
 142   bool is_obsolete             () const { return (_flags & JVM_ACC_IS_OBSOLETE            ) != 0; }
 143   bool is_deleted              () const { return (_flags & JVM_ACC_IS_DELETED             ) != 0; }
 144   bool is_prefixed_native      () const { return (_flags & JVM_ACC_IS_PREFIXED_NATIVE     ) != 0; }
 145 
 146   // Klass* flags
 147   bool has_miranda_methods     () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS    ) != 0; }
 148   bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; }
 149   bool has_finalizer           () const { return (_flags & JVM_ACC_HAS_FINALIZER          ) != 0; }
 150   bool has_final_method        () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD       ) != 0; }
 151   bool is_cloneable_fast       () const { return (_flags & JVM_ACC_IS_CLONEABLE_FAST      ) != 0; }
 152   bool is_shared_class         () const { return (_flags & JVM_ACC_IS_SHARED_CLASS        ) != 0; }
 153   bool is_hidden_class         () const { return (_flags & JVM_ACC_IS_HIDDEN_CLASS        ) != 0; }
 154 
 155   // Klass* and Method* flags
 156   bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; }
 157   void set_has_localvariable_table()    { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
 158   void clear_has_localvariable_table()  { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
 159 
 160   // field flags
 161   bool is_field_access_watched() const  { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; }
 162   bool is_field_modification_watched() const
 163                                         { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; }
 164   bool has_field_initialized_final_update() const
 165                                         { return (_flags & JVM_ACC_FIELD_INITIALIZED_FINAL_UPDATE) != 0; }
 166   bool on_stack() const                 { return (_flags & JVM_ACC_ON_STACK) != 0; }
 167   bool is_internal() const              { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; }
 168   bool is_stable() const                { return (_flags & JVM_ACC_FIELD_STABLE) != 0; }
 169   bool field_has_generic_signature() const
 170                                         { return (_flags & JVM_ACC_FIELD_HAS_GENERIC_SIGNATURE) != 0; }
 171 
 172   // get .class file flags
 173   jint get_flags               () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); }


 206   void set_not_c2_compilable()         { atomic_set_bits(JVM_ACC_NOT_C2_COMPILABLE);       }
 207   void set_not_c2_osr_compilable()     { atomic_set_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE);   }
 208   void set_has_linenumber_table()      { atomic_set_bits(JVM_ACC_HAS_LINE_NUMBER_TABLE);   }
 209   void set_has_checked_exceptions()    { atomic_set_bits(JVM_ACC_HAS_CHECKED_EXCEPTIONS);  }
 210   void set_has_jsrs()                  { atomic_set_bits(JVM_ACC_HAS_JSRS);                }
 211   void set_is_old()                    { atomic_set_bits(JVM_ACC_IS_OLD);                  }
 212   void set_is_obsolete()               { atomic_set_bits(JVM_ACC_IS_OBSOLETE);             }
 213   void set_is_deleted()                { atomic_set_bits(JVM_ACC_IS_DELETED);              }
 214   void set_is_prefixed_native()        { atomic_set_bits(JVM_ACC_IS_PREFIXED_NATIVE);      }
 215 
 216   void clear_not_c1_compilable()       { atomic_clear_bits(JVM_ACC_NOT_C1_COMPILABLE);       }
 217   void clear_not_c2_compilable()       { atomic_clear_bits(JVM_ACC_NOT_C2_COMPILABLE);       }
 218   void clear_not_c2_osr_compilable()   { atomic_clear_bits(JVM_ACC_NOT_C2_OSR_COMPILABLE);   }
 219   // Klass* flags
 220   void set_has_vanilla_constructor()   { atomic_set_bits(JVM_ACC_HAS_VANILLA_CONSTRUCTOR); }
 221   void set_has_finalizer()             { atomic_set_bits(JVM_ACC_HAS_FINALIZER);           }
 222   void set_has_final_method()          { atomic_set_bits(JVM_ACC_HAS_FINAL_METHOD);        }
 223   void set_is_cloneable_fast()         { atomic_set_bits(JVM_ACC_IS_CLONEABLE_FAST);       }
 224   void set_has_miranda_methods()       { atomic_set_bits(JVM_ACC_HAS_MIRANDA_METHODS);     }
 225   void set_is_shared_class()           { atomic_set_bits(JVM_ACC_IS_SHARED_CLASS);         }
 226   void set_is_hidden_class()           { atomic_set_bits(JVM_ACC_IS_HIDDEN_CLASS);         }
 227 
 228  public:
 229   // field flags
 230   void set_is_field_access_watched(const bool value)
 231                                        {
 232                                          if (value) {
 233                                            atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
 234                                          } else {
 235                                            atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
 236                                          }
 237                                        }
 238   void set_is_field_modification_watched(const bool value)
 239                                        {
 240                                          if (value) {
 241                                            atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
 242                                          } else {
 243                                            atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
 244                                          }
 245                                        }
 246 


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