105 _enabled = z;
106 }
107 }
108
109 // MemberName support
110
111 // import java_lang_invoke_MemberName.*
112 enum {
113 IS_METHOD = java_lang_invoke_MemberName::MN_IS_METHOD,
114 IS_CONSTRUCTOR = java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR,
115 IS_FIELD = java_lang_invoke_MemberName::MN_IS_FIELD,
116 IS_TYPE = java_lang_invoke_MemberName::MN_IS_TYPE,
117 CALLER_SENSITIVE = java_lang_invoke_MemberName::MN_CALLER_SENSITIVE,
118 REFERENCE_KIND_SHIFT = java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT,
119 REFERENCE_KIND_MASK = java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK,
120 SEARCH_SUPERCLASSES = java_lang_invoke_MemberName::MN_SEARCH_SUPERCLASSES,
121 SEARCH_INTERFACES = java_lang_invoke_MemberName::MN_SEARCH_INTERFACES,
122 ALL_KINDS = IS_METHOD | IS_CONSTRUCTOR | IS_FIELD | IS_TYPE
123 };
124
125 oop MethodHandles::init_MemberName(Handle mname, Handle target, TRAPS) {
126 // This method is used from java.lang.invoke.MemberName constructors.
127 // It fills in the new MemberName from a java.lang.reflect.Member.
128 Thread* thread = Thread::current();
129 oop target_oop = target();
130 Klass* target_klass = target_oop->klass();
131 if (target_klass == SystemDictionary::reflect_Field_klass()) {
132 oop clazz = java_lang_reflect_Field::clazz(target_oop); // fd.field_holder()
133 int slot = java_lang_reflect_Field::slot(target_oop); // fd.index()
134 Klass* k = java_lang_Class::as_Klass(clazz);
135 if (k != NULL && k->is_instance_klass()) {
136 fieldDescriptor fd(InstanceKlass::cast(k), slot);
137 oop mname2 = init_field_MemberName(mname, fd);
138 if (mname2 != NULL) {
139 // Since we have the reified name and type handy, add them to the result.
140 if (java_lang_invoke_MemberName::name(mname2) == NULL)
141 java_lang_invoke_MemberName::set_name(mname2, java_lang_reflect_Field::name(target_oop));
142 if (java_lang_invoke_MemberName::type(mname2) == NULL)
143 java_lang_invoke_MemberName::set_type(mname2, java_lang_reflect_Field::type(target_oop));
144 }
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105 _enabled = z;
106 }
107 }
108
109 // MemberName support
110
111 // import java_lang_invoke_MemberName.*
112 enum {
113 IS_METHOD = java_lang_invoke_MemberName::MN_IS_METHOD,
114 IS_CONSTRUCTOR = java_lang_invoke_MemberName::MN_IS_CONSTRUCTOR,
115 IS_FIELD = java_lang_invoke_MemberName::MN_IS_FIELD,
116 IS_TYPE = java_lang_invoke_MemberName::MN_IS_TYPE,
117 CALLER_SENSITIVE = java_lang_invoke_MemberName::MN_CALLER_SENSITIVE,
118 REFERENCE_KIND_SHIFT = java_lang_invoke_MemberName::MN_REFERENCE_KIND_SHIFT,
119 REFERENCE_KIND_MASK = java_lang_invoke_MemberName::MN_REFERENCE_KIND_MASK,
120 SEARCH_SUPERCLASSES = java_lang_invoke_MemberName::MN_SEARCH_SUPERCLASSES,
121 SEARCH_INTERFACES = java_lang_invoke_MemberName::MN_SEARCH_INTERFACES,
122 ALL_KINDS = IS_METHOD | IS_CONSTRUCTOR | IS_FIELD | IS_TYPE
123 };
124
125 int MethodHandles::ref_kind_to_flags(int ref_kind) {
126 assert(ref_kind_is_valid(ref_kind), "%d", ref_kind);
127 int flags = (ref_kind << REFERENCE_KIND_SHIFT);
128 if (ref_kind_is_field(ref_kind)) {
129 flags |= IS_FIELD;
130 } else if (ref_kind_is_method(ref_kind)) {
131 flags |= IS_METHOD;
132 } else if (ref_kind == JVM_REF_newInvokeSpecial) {
133 flags |= IS_CONSTRUCTOR;
134 }
135 return flags;
136 }
137
138 Handle MethodHandles::resolve_MemberName_type(Handle mname, Klass* caller, TRAPS) {
139 Handle empty;
140 Handle type(THREAD, java_lang_invoke_MemberName::type(mname()));
141 if (!java_lang_String::is_instance_inlined(type())) {
142 return type; // already resolved
143 }
144 Symbol* signature = java_lang_String::as_symbol_or_null(type());
145 if (signature == NULL) {
146 return empty; // no such signature exists in the VM
147 }
148 Handle resolved;
149 int flags = java_lang_invoke_MemberName::flags(mname());
150 switch (flags & ALL_KINDS) {
151 case IS_METHOD:
152 case IS_CONSTRUCTOR:
153 resolved = SystemDictionary::find_method_handle_type(signature, caller, CHECK_(empty));
154 break;
155 case IS_FIELD:
156 resolved = SystemDictionary::find_field_handle_type(signature, caller, CHECK_(empty));
157 break;
158 default:
159 THROW_MSG_(vmSymbols::java_lang_InternalError(), "unrecognized MemberName format", empty);
160 }
161 if (resolved.is_null()) {
162 THROW_MSG_(vmSymbols::java_lang_InternalError(), "bad MemberName type", empty);
163 }
164 return resolved;
165 }
166
167 oop MethodHandles::init_MemberName(Handle mname, Handle target, TRAPS) {
168 // This method is used from java.lang.invoke.MemberName constructors.
169 // It fills in the new MemberName from a java.lang.reflect.Member.
170 Thread* thread = Thread::current();
171 oop target_oop = target();
172 Klass* target_klass = target_oop->klass();
173 if (target_klass == SystemDictionary::reflect_Field_klass()) {
174 oop clazz = java_lang_reflect_Field::clazz(target_oop); // fd.field_holder()
175 int slot = java_lang_reflect_Field::slot(target_oop); // fd.index()
176 Klass* k = java_lang_Class::as_Klass(clazz);
177 if (k != NULL && k->is_instance_klass()) {
178 fieldDescriptor fd(InstanceKlass::cast(k), slot);
179 oop mname2 = init_field_MemberName(mname, fd);
180 if (mname2 != NULL) {
181 // Since we have the reified name and type handy, add them to the result.
182 if (java_lang_invoke_MemberName::name(mname2) == NULL)
183 java_lang_invoke_MemberName::set_name(mname2, java_lang_reflect_Field::name(target_oop));
184 if (java_lang_invoke_MemberName::type(mname2) == NULL)
185 java_lang_invoke_MemberName::set_type(mname2, java_lang_reflect_Field::type(target_oop));
186 }
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