1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "method_handle_impl-inl.h" 18 19 #include "class-alloc-inl.h" 20 #include "class_root.h" 21 22 namespace art { 23 namespace mirror { 24 25 const char* MethodHandle::GetReturnTypeDescriptor(const char* invoke_method_name) { 26 if (strcmp(invoke_method_name, "invoke") == 0 || strcmp(invoke_method_name, "invokeExact") == 0) { 27 return "Ljava/lang/Object;"; 28 } else { 29 return nullptr; 30 } 31 } 32 33 void MethodHandle::Initialize(uintptr_t art_field_or_method, 34 Kind kind, 35 Handle<MethodType> method_type) 36 REQUIRES_SHARED(Locks::mutator_lock_) { 37 CHECK(!Runtime::Current()->IsActiveTransaction()); 38 SetFieldObject<false>(CachedSpreadInvokerOffset(), nullptr); 39 SetFieldObject<false>(NominalTypeOffset(), nullptr); 40 SetFieldObject<false>(MethodTypeOffset(), method_type.Get()); 41 SetField32<false>(HandleKindOffset(), static_cast<uint32_t>(kind)); 42 SetField64<false>(ArtFieldOrMethodOffset(), art_field_or_method); 43 } 44 45 ObjPtr<mirror::MethodHandleImpl> MethodHandleImpl::Create(Thread* const self, 46 uintptr_t art_field_or_method, 47 MethodHandle::Kind kind, 48 Handle<MethodType> method_type) 49 REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!Roles::uninterruptible_) { 50 StackHandleScope<1> hs(self); 51 Handle<mirror::MethodHandleImpl> mh(hs.NewHandle(ObjPtr<MethodHandleImpl>::DownCast( 52 GetClassRoot<MethodHandleImpl>()->AllocObject(self)))); 53 mh->Initialize(art_field_or_method, kind, method_type); 54 return mh.Get(); 55 } 56 57 } // namespace mirror 58 } // namespace art 59
