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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_GFX_GPU_FENCE_HANDLE_H_
#define UI_GFX_GPU_FENCE_HANDLE_H_
#include "build/build_config.h"
#include "ui/gfx/gfx_export.h"
#if defined(OS_POSIX)
#include "base/file_descriptor_posix.h"
#endif
namespace gfx {
enum class GpuFenceHandleType {
// A null handle for transport. It cannot be used for making a waitable fence
// object.
kEmpty,
// A file descriptor for a native fence object as used by the
// EGL_ANDROID_native_fence_sync extension.
kAndroidNativeFenceSync,
kLast = kAndroidNativeFenceSync
};
struct GFX_EXPORT GpuFenceHandle {
GpuFenceHandle();
GpuFenceHandle(const GpuFenceHandle& other);
GpuFenceHandle& operator=(const GpuFenceHandle& other);
~GpuFenceHandle();
bool is_null() const { return type == GpuFenceHandleType::kEmpty; }
GpuFenceHandleType type;
#if defined(OS_POSIX)
base::FileDescriptor native_fd;
#endif
};
// Returns an instance of |handle| which can be sent over IPC. This duplicates
// the file-handles as appropriate, so that the IPC code take ownership of them,
// without invalidating |handle| itself.
GFX_EXPORT GpuFenceHandle CloneHandleForIPC(const GpuFenceHandle& handle);
} // namespace gfx
#endif // UI_GFX_GPU_FENCE_HANDLE_H_
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