File: dawn_memory_transfer_handle.h

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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GPU_COMMAND_BUFFER_COMMON_DAWN_MEMORY_TRANSFER_HANDLE_H_
#define GPU_COMMAND_BUFFER_COMMON_DAWN_MEMORY_TRANSFER_HANDLE_H_

namespace gpu {
namespace webgpu {

// This struct holds information describing a shared memory allocation used for
// bulk data transfers between the Dawn client and service. The shared memory is
// allocated by the client using MappedMemoryManager.
// On the GPU service, shared memory is received using
// CommonDecoder::GetSharedMemoryAs which checks the memory region is valid.
struct MemoryTransferHandle {
  uint32_t size;
  int32_t shm_id;
  uint32_t shm_offset;
};

}  // namespace webgpu
}  // namespace gpu

#endif  // GPU_COMMAND_BUFFER_COMMON_DAWN_MEMORY_TRANSFER_HANDLE_H_