/* * Copyright (C) 2011 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #ifndef ART_RUNTIME_MIRROR_IFTABLE_H_ #define ART_RUNTIME_MIRROR_IFTABLE_H_ #include "base/casts.h" #include "object_array.h" namespace art { namespace mirror { class MANAGED IfTable FINAL : public ObjectArray<Object> { public: ALWAYS_INLINE Class* GetInterface(int32_t i) REQUIRES_SHARED(Locks::mutator_lock_) { Class* interface = GetWithoutChecks((i * kMax) + kInterface)->AsClass(); DCHECK(interface != nullptr); return interface; } ALWAYS_INLINE void SetInterface(int32_t i, ObjPtr<Class> interface) REQUIRES_SHARED(Locks::mutator_lock_); template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> PointerArray* GetMethodArray(int32_t i) REQUIRES_SHARED(Locks::mutator_lock_) { auto* method_array = down_cast<PointerArray*>(Get<kVerifyFlags, kReadBarrierOption>( (i * kMax) + kMethodArray)); DCHECK(method_array != nullptr); return method_array; } template<VerifyObjectFlags kVerifyFlags = kDefaultVerifyFlags, ReadBarrierOption kReadBarrierOption = kWithReadBarrier> size_t GetMethodArrayCount(int32_t i) REQUIRES_SHARED(Locks::mutator_lock_) { auto* method_array = down_cast<PointerArray*>( Get<kVerifyFlags, kReadBarrierOption>((i * kMax) + kMethodArray)); return method_array == nullptr ? 0u : method_array->GetLength(); } void SetMethodArray(int32_t i, ObjPtr<PointerArray> arr) REQUIRES_SHARED(Locks::mutator_lock_); size_t Count() REQUIRES_SHARED(Locks::mutator_lock_) { return GetLength() / kMax; } enum { // Points to the interface class. kInterface = 0, // Method pointers into the vtable, allow fast map from interface method index to concrete // instance method. kMethodArray = 1, kMax = 2, }; private: DISALLOW_IMPLICIT_CONSTRUCTORS(IfTable); }; } // namespace mirror } // namespace art #endif // ART_RUNTIME_MIRROR_IFTABLE_H_