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
82
83 // flags accepted by set_field_flags()
84 JVM_ACC_FIELD_FLAGS = 0x00008000 | JVM_ACC_WRITTEN_FLAGS
85
86 };
87
88
89 class AccessFlags VALUE_OBJ_CLASS_SPEC {
90 friend class VMStructs;
91 private:
92 jint _flags;
93
94 public:
95 // Java access flags
96 bool is_public () const { return (_flags & JVM_ACC_PUBLIC ) != 0; }
97 bool is_private () const { return (_flags & JVM_ACC_PRIVATE ) != 0; }
98 bool is_protected () const { return (_flags & JVM_ACC_PROTECTED ) != 0; }
99 bool is_static () const { return (_flags & JVM_ACC_STATIC ) != 0; }
100 bool is_final () const { return (_flags & JVM_ACC_FINAL ) != 0; }
101 bool is_synchronized() const { return (_flags & JVM_ACC_SYNCHRONIZED) != 0; }
102 bool is_super () const { return (_flags & JVM_ACC_SUPER ) != 0; }
103 bool is_volatile () const { return (_flags & JVM_ACC_VOLATILE ) != 0; }
104 bool is_transient () const { return (_flags & JVM_ACC_TRANSIENT ) != 0; }
133 // to distinguish it from a JNI native (which never has the match bit set).
134 // The synthetic bit is also present, because such a method is never
135 // explicitly defined in Java code.
136 bool is_method_handle_invoke () const { return (_flags & JVM_MH_INVOKE_BITS) == JVM_MH_INVOKE_BITS; }
137
138 // klassOop flags
139 bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; }
140 bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; }
141 bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; }
142 bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; }
143 bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; }
144 // klassOop and methodOop flags
145 bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; }
146 void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
147 void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
148
149 // field flags
150 bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; }
151 bool is_field_modification_watched() const
152 { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; }
153
154 // get .class file flags
155 jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); }
156
157 // Initialization
158 void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); }
159 void set_field_flags(jint flags) { _flags = (flags & JVM_ACC_FIELD_FLAGS); }
160 void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); }
161
162 void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); }
163 void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); }
164
165 // Atomic update of flags
166 void atomic_set_bits(jint bits);
167 void atomic_clear_bits(jint bits);
168
169 private:
170 friend class methodOopDesc;
171 friend class Klass;
172 friend class ClassFileParser;
173 // the functions below should only be called on the _access_flags inst var directly,
174 // otherwise they are just changing a copy of the flags
175
176 // attribute flags
177 void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); }
178
179 // methodOop flags
201 public:
202 // field flags
203 void set_is_field_access_watched(const bool value)
204 {
205 if (value) {
206 atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
207 } else {
208 atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
209 }
210 }
211 void set_is_field_modification_watched(const bool value)
212 {
213 if (value) {
214 atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
215 } else {
216 atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
217 }
218 }
219
220 // Conversion
221 jshort as_short() { return (jshort)_flags; }
222 jint as_int() { return _flags; }
223
224 inline friend AccessFlags accessFlags_from(jint flags);
225
226 // Printing/debugging
227 void print_on(outputStream* st) const PRODUCT_RETURN;
228 };
229
230 inline AccessFlags accessFlags_from(jint flags) {
231 AccessFlags af;
232 af._flags = flags;
233 return af;
234 }
235
236 #endif // SHARE_VM_UTILITIES_ACCESSFLAGS_HPP
|
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
82 JVM_ACC_FIELD_INTERNAL = 0x00000400, // internal field, same as JVM_ACC_ABSTRACT
83
84 JVM_ACC_FIELD_INTERNAL_FLAGS = JVM_ACC_FIELD_ACCESS_WATCHED |
85 JVM_ACC_FIELD_MODIFICATION_WATCHED |
86 JVM_ACC_FIELD_INTERNAL,
87
88 // flags accepted by set_field_flags()
89 JVM_ACC_FIELD_FLAGS = JVM_RECOGNIZED_FIELD_MODIFIERS | JVM_ACC_FIELD_INTERNAL_FLAGS
90
91 };
92
93
94 class AccessFlags VALUE_OBJ_CLASS_SPEC {
95 friend class VMStructs;
96 private:
97 jint _flags;
98
99 public:
100 // Java access flags
101 bool is_public () const { return (_flags & JVM_ACC_PUBLIC ) != 0; }
102 bool is_private () const { return (_flags & JVM_ACC_PRIVATE ) != 0; }
103 bool is_protected () const { return (_flags & JVM_ACC_PROTECTED ) != 0; }
104 bool is_static () const { return (_flags & JVM_ACC_STATIC ) != 0; }
105 bool is_final () const { return (_flags & JVM_ACC_FINAL ) != 0; }
106 bool is_synchronized() const { return (_flags & JVM_ACC_SYNCHRONIZED) != 0; }
107 bool is_super () const { return (_flags & JVM_ACC_SUPER ) != 0; }
108 bool is_volatile () const { return (_flags & JVM_ACC_VOLATILE ) != 0; }
109 bool is_transient () const { return (_flags & JVM_ACC_TRANSIENT ) != 0; }
138 // to distinguish it from a JNI native (which never has the match bit set).
139 // The synthetic bit is also present, because such a method is never
140 // explicitly defined in Java code.
141 bool is_method_handle_invoke () const { return (_flags & JVM_MH_INVOKE_BITS) == JVM_MH_INVOKE_BITS; }
142
143 // klassOop flags
144 bool has_miranda_methods () const { return (_flags & JVM_ACC_HAS_MIRANDA_METHODS ) != 0; }
145 bool has_vanilla_constructor () const { return (_flags & JVM_ACC_HAS_VANILLA_CONSTRUCTOR) != 0; }
146 bool has_finalizer () const { return (_flags & JVM_ACC_HAS_FINALIZER ) != 0; }
147 bool has_final_method () const { return (_flags & JVM_ACC_HAS_FINAL_METHOD ) != 0; }
148 bool is_cloneable () const { return (_flags & JVM_ACC_IS_CLONEABLE ) != 0; }
149 // klassOop and methodOop flags
150 bool has_localvariable_table () const { return (_flags & JVM_ACC_HAS_LOCAL_VARIABLE_TABLE) != 0; }
151 void set_has_localvariable_table() { atomic_set_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
152 void clear_has_localvariable_table() { atomic_clear_bits(JVM_ACC_HAS_LOCAL_VARIABLE_TABLE); }
153
154 // field flags
155 bool is_field_access_watched() const { return (_flags & JVM_ACC_FIELD_ACCESS_WATCHED) != 0; }
156 bool is_field_modification_watched() const
157 { return (_flags & JVM_ACC_FIELD_MODIFICATION_WATCHED) != 0; }
158 bool is_internal() const { return (_flags & JVM_ACC_FIELD_INTERNAL) != 0; }
159
160 // get .class file flags
161 jint get_flags () const { return (_flags & JVM_ACC_WRITTEN_FLAGS); }
162
163 // Initialization
164 void add_promoted_flags(jint flags) { _flags |= (flags & JVM_ACC_PROMOTED_FLAGS); }
165 void set_field_flags(jint flags) {
166 assert((flags & JVM_ACC_FIELD_FLAGS) == flags, "only recognized flags");
167 _flags = (flags & JVM_ACC_FIELD_FLAGS);
168 }
169 void set_flags(jint flags) { _flags = (flags & JVM_ACC_WRITTEN_FLAGS); }
170
171 void set_queued_for_compilation() { atomic_set_bits(JVM_ACC_QUEUED); }
172 void clear_queued_for_compilation() { atomic_clear_bits(JVM_ACC_QUEUED); }
173
174 // Atomic update of flags
175 void atomic_set_bits(jint bits);
176 void atomic_clear_bits(jint bits);
177
178 private:
179 friend class methodOopDesc;
180 friend class Klass;
181 friend class ClassFileParser;
182 // the functions below should only be called on the _access_flags inst var directly,
183 // otherwise they are just changing a copy of the flags
184
185 // attribute flags
186 void set_is_synthetic() { atomic_set_bits(JVM_ACC_SYNTHETIC); }
187
188 // methodOop flags
210 public:
211 // field flags
212 void set_is_field_access_watched(const bool value)
213 {
214 if (value) {
215 atomic_set_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
216 } else {
217 atomic_clear_bits(JVM_ACC_FIELD_ACCESS_WATCHED);
218 }
219 }
220 void set_is_field_modification_watched(const bool value)
221 {
222 if (value) {
223 atomic_set_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
224 } else {
225 atomic_clear_bits(JVM_ACC_FIELD_MODIFICATION_WATCHED);
226 }
227 }
228
229 // Conversion
230 jshort as_short() const { return (jshort)_flags; }
231 jint as_int() const { return _flags; }
232
233 inline friend AccessFlags accessFlags_from(jint flags);
234
235 // Printing/debugging
236 void print_on(outputStream* st) const PRODUCT_RETURN;
237 };
238
239 inline AccessFlags accessFlags_from(jint flags) {
240 AccessFlags af;
241 af._flags = flags;
242 return af;
243 }
244
245 #endif // SHARE_VM_UTILITIES_ACCESSFLAGS_HPP
|