61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
// 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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#include "dawn_native/PooledResourceMemoryAllocator.h"
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#include "dawn_native/Device.h"
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namespace dawn_native {
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PooledResourceMemoryAllocator::PooledResourceMemoryAllocator(
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ResourceHeapAllocator* heapAllocator)
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: mHeapAllocator(heapAllocator) {
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}
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void PooledResourceMemoryAllocator::DestroyPool() {
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for (auto& resourceHeap : mPool) {
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ASSERT(resourceHeap != nullptr);
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mHeapAllocator->DeallocateResourceHeap(std::move(resourceHeap));
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}
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mPool.clear();
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}
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ResultOrError<std::unique_ptr<ResourceHeapBase>>
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PooledResourceMemoryAllocator::AllocateResourceHeap(uint64_t size) {
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// Pooled memory is LIFO because memory can be evicted by LRU. However, this means
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// pooling is disabled in-frame when the memory is still pending. For high in-frame
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// memory users, FIFO might be preferable when memory consumption is a higher priority.
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std::unique_ptr<ResourceHeapBase> memory;
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if (!mPool.empty()) {
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memory = std::move(mPool.front());
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mPool.pop_front();
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}
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if (memory == nullptr) {
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DAWN_TRY_ASSIGN(memory, mHeapAllocator->AllocateResourceHeap(size));
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}
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return std::move(memory);
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}
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void PooledResourceMemoryAllocator::DeallocateResourceHeap(
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std::unique_ptr<ResourceHeapBase> allocation) {
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mPool.push_front(std::move(allocation));
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}
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uint64_t PooledResourceMemoryAllocator::GetPoolSizeForTesting() const {
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return mPool.size();
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}
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} // namespace dawn_native
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