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// Copyright 2013 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_IPC_COMMON_GPU_MEMORY_BUFFER_IMPL_H_
#define GPU_IPC_COMMON_GPU_MEMORY_BUFFER_IMPL_H_
#include "base/functional/callback.h"
#include "base/synchronization/lock.h"
#include "gpu/command_buffer/common/sync_token.h"
#include "gpu/ipc/common/gpu_ipc_common_export.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/gpu_memory_buffer.h"
namespace gpu {
// Provides common implementation of a GPU memory buffer.
//
// TODO(reveman): Rename to GpuMemoryBufferBase.
class GPU_IPC_COMMON_EXPORT GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
public:
using DestructionCallback = base::OnceCallback<void()>;
GpuMemoryBufferImpl(const GpuMemoryBufferImpl&) = delete;
GpuMemoryBufferImpl& operator=(const GpuMemoryBufferImpl&) = delete;
~GpuMemoryBufferImpl() override;
// Overridden from gfx::GpuMemoryBuffer:
gfx::Size GetSize() const override;
gfx::BufferFormat GetFormat() const override;
gfx::GpuMemoryBufferId GetId() const override;
void OnMemoryDump(
base::trace_event::ProcessMemoryDump* pmd,
const base::trace_event::MemoryAllocatorDumpGuid& buffer_dump_guid,
uint64_t tracing_process_id,
int importance) const override;
protected:
GpuMemoryBufferImpl(gfx::GpuMemoryBufferId id,
const gfx::Size& size,
gfx::BufferFormat format,
DestructionCallback callback);
void AssertMapped();
const gfx::GpuMemoryBufferId id_;
const gfx::Size size_;
const gfx::BufferFormat format_;
DestructionCallback callback_;
// Note: This lock must be held throughout the entirety of the Map() and
// Unmap() operations to avoid corrupt mutation across multiple threads.
base::Lock map_lock_;
uint32_t map_count_ GUARDED_BY(map_lock_) = 0u;
};
} // namespace gpu
#endif // GPU_IPC_COMMON_GPU_MEMORY_BUFFER_IMPL_H_
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