1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
// 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_
|
