159
160 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
161 klassOop result_oop = pool->klass_ref_at(index, CHECK);
162 result = KlassHandle(THREAD, result_oop);
163 }
164
165 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
166 klassOop result_oop =
167 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK);
168 result = KlassHandle(THREAD, result_oop);
169 }
170
171
172 //------------------------------------------------------------------------------------------------------------------------
173 // Method resolution
174 //
175 // According to JVM spec. $5.4.3c & $5.4.3d
176
177 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
178 methodOop result_oop = klass->uncached_lookup_method(name, signature);
179 if (EnableMethodHandles && result_oop != NULL) {
180 switch (result_oop->intrinsic_id()) {
181 case vmIntrinsics::_invokeExact:
182 case vmIntrinsics::_invokeGeneric:
183 case vmIntrinsics::_invokeDynamic:
184 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method.
185 return;
186 }
187 }
188 result = methodHandle(THREAD, result_oop);
189 }
190
191 // returns first instance method
192 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
193 methodOop result_oop = klass->uncached_lookup_method(name, signature);
194 result = methodHandle(THREAD, result_oop);
195 while (!result.is_null() && result->is_static()) {
196 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super());
197 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature));
198 }
199 }
200
201
202 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
203 ResourceMark rm(THREAD);
204 klassVtable *vt = instanceKlass::cast(klass())->vtable();
205 return vt->index_of_miranda(name, signature);
206 }
207
208 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
209 instanceKlass *ik = instanceKlass::cast(klass());
210 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature));
211 }
212
213 void LinkResolver::lookup_implicit_method(methodHandle& result,
214 KlassHandle klass, Symbol* name, Symbol* signature,
215 KlassHandle current_klass,
216 TRAPS) {
217 if (EnableMethodHandles &&
218 klass() == SystemDictionary::MethodHandle_klass() &&
219 methodOopDesc::is_method_handle_invoke_name(name)) {
220 if (!THREAD->is_Compiler_thread() && !MethodHandles::enabled()) {
221 // Make sure the Java part of the runtime has been booted up.
222 klassOop natives = SystemDictionary::MethodHandleNatives_klass();
223 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) {
224 Symbol* natives_name = vmSymbols::java_lang_invoke_MethodHandleNatives();
225 if (natives != NULL && AllowTransitionalJSR292) natives_name = Klass::cast(natives)->name();
226 SystemDictionary::resolve_or_fail(natives_name,
227 Handle(),
228 Handle(),
229 true,
230 CHECK);
231 }
232 }
233 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name,
234 signature,
235 current_klass,
236 CHECK);
237 if (result_oop != NULL) {
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159
160 void LinkResolver::resolve_klass(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
161 klassOop result_oop = pool->klass_ref_at(index, CHECK);
162 result = KlassHandle(THREAD, result_oop);
163 }
164
165 void LinkResolver::resolve_klass_no_update(KlassHandle& result, constantPoolHandle pool, int index, TRAPS) {
166 klassOop result_oop =
167 constantPoolOopDesc::klass_ref_at_if_loaded_check(pool, index, CHECK);
168 result = KlassHandle(THREAD, result_oop);
169 }
170
171
172 //------------------------------------------------------------------------------------------------------------------------
173 // Method resolution
174 //
175 // According to JVM spec. $5.4.3c & $5.4.3d
176
177 void LinkResolver::lookup_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
178 methodOop result_oop = klass->uncached_lookup_method(name, signature);
179 if (EnableInvokeDynamic && result_oop != NULL) {
180 switch (result_oop->intrinsic_id()) {
181 case vmIntrinsics::_invokeExact:
182 case vmIntrinsics::_invokeGeneric:
183 case vmIntrinsics::_invokeDynamic:
184 // Do not link directly to these. The VM must produce a synthetic one using lookup_implicit_method.
185 return;
186 }
187 }
188 result = methodHandle(THREAD, result_oop);
189 }
190
191 // returns first instance method
192 void LinkResolver::lookup_instance_method_in_klasses(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
193 methodOop result_oop = klass->uncached_lookup_method(name, signature);
194 result = methodHandle(THREAD, result_oop);
195 while (!result.is_null() && result->is_static()) {
196 klass = KlassHandle(THREAD, Klass::cast(result->method_holder())->super());
197 result = methodHandle(THREAD, klass->uncached_lookup_method(name, signature));
198 }
199 }
200
201
202 int LinkResolver::vtable_index_of_miranda_method(KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
203 ResourceMark rm(THREAD);
204 klassVtable *vt = instanceKlass::cast(klass())->vtable();
205 return vt->index_of_miranda(name, signature);
206 }
207
208 void LinkResolver::lookup_method_in_interfaces(methodHandle& result, KlassHandle klass, Symbol* name, Symbol* signature, TRAPS) {
209 instanceKlass *ik = instanceKlass::cast(klass());
210 result = methodHandle(THREAD, ik->lookup_method_in_all_interfaces(name, signature));
211 }
212
213 void LinkResolver::lookup_implicit_method(methodHandle& result,
214 KlassHandle klass, Symbol* name, Symbol* signature,
215 KlassHandle current_klass,
216 TRAPS) {
217 if (EnableInvokeDynamic &&
218 klass() == SystemDictionary::MethodHandle_klass() &&
219 methodOopDesc::is_method_handle_invoke_name(name)) {
220 if (!THREAD->is_Compiler_thread() && !MethodHandles::enabled()) {
221 // Make sure the Java part of the runtime has been booted up.
222 klassOop natives = SystemDictionary::MethodHandleNatives_klass();
223 if (natives == NULL || instanceKlass::cast(natives)->is_not_initialized()) {
224 Symbol* natives_name = vmSymbols::java_lang_invoke_MethodHandleNatives();
225 if (natives != NULL && AllowTransitionalJSR292) natives_name = Klass::cast(natives)->name();
226 SystemDictionary::resolve_or_fail(natives_name,
227 Handle(),
228 Handle(),
229 true,
230 CHECK);
231 }
232 }
233 methodOop result_oop = SystemDictionary::find_method_handle_invoke(name,
234 signature,
235 current_klass,
236 CHECK);
237 if (result_oop != NULL) {
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