/* * Copyright (C) 2015 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_LAMBDA_LEAKING_ALLOCATOR_H_ #define ART_RUNTIME_LAMBDA_LEAKING_ALLOCATOR_H_ #include // std::forward namespace art { class Thread; // forward declaration namespace lambda { // Temporary class to centralize all the leaking allocations. // Allocations made through this class are never freed, but it is a placeholder // that means that the calling code needs to be rewritten to properly: // // (a) Have a lifetime scoped to some other entity. // (b) Not be allocated over and over again if it was already allocated once (immutable data). // // TODO: do all of the above a/b for each callsite, and delete this class. class LeakingAllocator { public: // Allocate byte_size bytes worth of memory. Never freed. static void* AllocateMemory(Thread* self, size_t byte_size); // Make a new instance of T, flexibly sized, in-place at newly allocated memory. Never freed. template static T* MakeFlexibleInstance(Thread* self, size_t byte_size, Args&&... args) { return new (AllocateMemory(self, byte_size)) T(std::forward(args)...); } // Make a new instance of T in-place at newly allocated memory. Never freed. template static T* MakeInstance(Thread* self, Args&&... args) { return new (AllocateMemory(self, sizeof(T))) T(std::forward(args)...); } }; } // namespace lambda } // namespace art #endif // ART_RUNTIME_LAMBDA_LEAKING_ALLOCATOR_H_