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// Copyright 2018 The Dawn & Tint Authors
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this
// list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef SRC_DAWN_NATIVE_DYNAMICUPLOADER_H_
#define SRC_DAWN_NATIVE_DYNAMICUPLOADER_H_
#include <memory>
#include <vector>
#include "dawn/common/Ref.h"
#include "dawn/native/Error.h"
#include "dawn/native/Forward.h"
#include "dawn/native/IntegerTypes.h"
#include "dawn/native/RingBufferAllocator.h"
#include "partition_alloc/pointers/raw_ptr.h"
// DynamicUploader is the front-end implementation used to manage multiple ring buffers for upload
// usage.
namespace dawn::native {
class BufferBase;
struct UploadHandle {
raw_ptr<uint8_t> mappedBuffer = nullptr;
uint64_t startOffset = 0;
raw_ptr<BufferBase> stagingBuffer = nullptr;
};
class DynamicUploader {
public:
explicit DynamicUploader(DeviceBase* device);
~DynamicUploader() = default;
// We add functions to Release StagingBuffers to the DynamicUploader as there's
// currently no place to track the allocated staging buffers such that they're freed after
// pending commands are finished. This should be changed when better resource allocation is
// implemented.
void ReleaseStagingBuffer(Ref<BufferBase> stagingBuffer);
ResultOrError<UploadHandle> Allocate(uint64_t allocationSize,
ExecutionSerial serial,
uint64_t offsetAlignment);
void Deallocate(ExecutionSerial lastCompletedSerial);
bool ShouldFlush();
private:
static constexpr uint64_t kRingBufferSize = 4 * 1024 * 1024;
uint64_t GetTotalAllocatedSize();
struct RingBuffer {
Ref<BufferBase> mStagingBuffer;
RingBufferAllocator mAllocator;
};
ResultOrError<UploadHandle> AllocateInternal(uint64_t allocationSize,
ExecutionSerial serial,
uint64_t offsetAlignment);
std::vector<std::unique_ptr<RingBuffer>> mRingBuffers;
SerialQueue<ExecutionSerial, Ref<BufferBase>> mReleasedStagingBuffers;
raw_ptr<DeviceBase> mDevice;
};
} // namespace dawn::native
#endif // SRC_DAWN_NATIVE_DYNAMICUPLOADER_H_