54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
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// Copyright 2020 The Dawn Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef DAWNNATIVE_POOLEDRESOURCEMEMORYALLOCATOR_H_
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#define DAWNNATIVE_POOLEDRESOURCEMEMORYALLOCATOR_H_
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#include "common/SerialQueue.h"
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#include "dawn_native/ResourceHeapAllocator.h"
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#include <deque>
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namespace dawn_native {
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class DeviceBase;
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// |PooledResourceMemoryAllocator| allocates a fixed-size resource memory from a resource memory
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// pool. Internally, it manages a list of heaps using LIFO (newest heaps are recycled first).
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// The heap is in one of two states: AVAILABLE or not. Upon de-allocate, the heap is returned
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// the pool and made AVAILABLE.
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class PooledResourceMemoryAllocator : public ResourceHeapAllocator {
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public:
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PooledResourceMemoryAllocator(ResourceHeapAllocator* heapAllocator);
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~PooledResourceMemoryAllocator() override = default;
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ResultOrError<std::unique_ptr<ResourceHeapBase>> AllocateResourceHeap(
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uint64_t size) override;
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void DeallocateResourceHeap(std::unique_ptr<ResourceHeapBase> allocation) override;
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void DestroyPool();
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// For testing purposes.
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uint64_t GetPoolSizeForTesting() const;
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private:
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ResourceHeapAllocator* mHeapAllocator = nullptr;
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std::deque<std::unique_ptr<ResourceHeapBase>> mPool;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_POOLEDRESOURCEMEMORYALLOCATOR_H_
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