| // Copyright 2017 The Chromium Authors |
| // 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_H_ |
| #define UI_GFX_GPU_FENCE_H_ |
| |
| #include "base/component_export.h" |
| #include "build/build_config.h" |
| #include "ui/gfx/gpu_fence_handle.h" |
| |
| extern "C" typedef struct _ClientGpuFence* ClientGpuFence; |
| |
| namespace base { |
| class TimeTicks; |
| } // namespace base |
| |
| namespace gfx { |
| |
| // GpuFence objects own a GpuFenceHandle and release the resources in it when |
| // going out of scope as appropriate. |
| class COMPONENT_EXPORT(GFX) GpuFence { |
| public: |
| // Constructor takes ownership of the source handle's resources. |
| explicit GpuFence(GpuFenceHandle handle); |
| GpuFence() = delete; |
| GpuFence(GpuFence&& other); |
| GpuFence& operator=(GpuFence&& other); |
| |
| GpuFence(const GpuFence&) = delete; |
| GpuFence& operator=(const GpuFence&) = delete; |
| |
| ~GpuFence(); |
| |
| // Returns a const reference to the underlying GpuFenceHandle |
| // owned by GpuFence. If you'd like a duplicated handle for use |
| // with IPC, call the Clone method on the returned handle. |
| const GpuFenceHandle& GetGpuFenceHandle() const; |
| |
| // Casts for use with the GLES interface. |
| ClientGpuFence AsClientGpuFence(); |
| static GpuFence* FromClientGpuFence(ClientGpuFence gpu_fence); |
| |
| // Wait for the GpuFence to become ready. |
| void Wait(); |
| |
| enum FenceStatus { kSignaled, kNotSignaled, kInvalid }; |
| static FenceStatus GetStatusChangeTime(int fd, base::TimeTicks* time); |
| |
| base::TimeTicks GetMaxTimestamp() const; |
| |
| private: |
| gfx::GpuFenceHandle fence_handle_; |
| }; |
| |
| } // namespace gfx |
| |
| #endif // UI_GFX_GPU_FENCE_H_ |