| // Copyright 2020 The Dawn Authors |
| // |
| // 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 DAWNNATIVE_POOLEDRESOURCEMEMORYALLOCATOR_H_ |
| #define DAWNNATIVE_POOLEDRESOURCEMEMORYALLOCATOR_H_ |
| |
| #include "dawn/common/SerialQueue.h" |
| #include "dawn/native/ResourceHeapAllocator.h" |
| |
| #include <deque> |
| |
| namespace dawn::native { |
| |
| class DeviceBase; |
| |
| // |PooledResourceMemoryAllocator| allocates a fixed-size resource memory from a resource memory |
| // pool. Internally, it manages a list of heaps using LIFO (newest heaps are recycled first). |
| // The heap is in one of two states: AVAILABLE or not. Upon de-allocate, the heap is returned |
| // the pool and made AVAILABLE. |
| class PooledResourceMemoryAllocator : public ResourceHeapAllocator { |
| public: |
| PooledResourceMemoryAllocator(ResourceHeapAllocator* heapAllocator); |
| ~PooledResourceMemoryAllocator() override = default; |
| |
| ResultOrError<std::unique_ptr<ResourceHeapBase>> AllocateResourceHeap( |
| uint64_t size) override; |
| void DeallocateResourceHeap(std::unique_ptr<ResourceHeapBase> allocation) override; |
| |
| void DestroyPool(); |
| |
| // For testing purposes. |
| uint64_t GetPoolSizeForTesting() const; |
| |
| private: |
| ResourceHeapAllocator* mHeapAllocator = nullptr; |
| |
| std::deque<std::unique_ptr<ResourceHeapBase>> mPool; |
| }; |
| |
| } // namespace dawn::native |
| |
| #endif // DAWNNATIVE_POOLEDRESOURCEMEMORYALLOCATOR_H_ |