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https://github.com/encounter/dawn-cmake.git
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3debb26a9e
Removes unbounded heap growth by capping the heap size to 4MB and falling back to direct allocation for larger requests. BUG=dawn:239 Change-Id: I9ae660809e3c0c539fbcfbee4afcf6fb1f466355 Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12720 Reviewed-by: Austin Eng <enga@chromium.org> Commit-Queue: Bryan Bernhart <bryan.bernhart@intel.com>
61 lines
2.2 KiB
C++
61 lines
2.2 KiB
C++
// Copyright 2018 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_DYNAMICUPLOADER_H_
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#define DAWNNATIVE_DYNAMICUPLOADER_H_
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#include "dawn_native/Forward.h"
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#include "dawn_native/RingBufferAllocator.h"
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#include "dawn_native/StagingBuffer.h"
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// DynamicUploader is the front-end implementation used to manage multiple ring buffers for upload
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// usage.
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namespace dawn_native {
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struct UploadHandle {
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uint8_t* mappedBuffer = nullptr;
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uint64_t startOffset = 0;
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StagingBufferBase* stagingBuffer = nullptr;
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};
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class DynamicUploader {
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public:
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DynamicUploader(DeviceBase* device);
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~DynamicUploader() = default;
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// We add functions to Release StagingBuffers to the DynamicUploader as there's
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// currently no place to track the allocated staging buffers such that they're freed after
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// pending commands are finished. This should be changed when better resource allocation is
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// implemented.
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void ReleaseStagingBuffer(std::unique_ptr<StagingBufferBase> stagingBuffer);
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ResultOrError<UploadHandle> Allocate(uint64_t allocationSize, Serial serial);
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void Deallocate(Serial lastCompletedSerial);
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private:
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static constexpr uint64_t kRingBufferSize = 4 * 1024 * 1024;
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struct RingBuffer {
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std::unique_ptr<StagingBufferBase> mStagingBuffer;
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RingBufferAllocator mAllocator;
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};
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std::vector<std::unique_ptr<RingBuffer>> mRingBuffers;
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SerialQueue<std::unique_ptr<StagingBufferBase>> mReleasedStagingBuffers;
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DeviceBase* mDevice;
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};
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} // namespace dawn_native
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#endif // DAWNNATIVE_DYNAMICUPLOADER_H_
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