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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 #ifndef Timer_DEFINED | 7 #ifndef Timer_DEFINED |
8 #define Timer_DEFINED | 8 #define Timer_DEFINED |
9 | 9 |
| 10 #include "SkTypes.h" |
10 #include "SkString.h" | 11 #include "SkString.h" |
11 #include "SkTime.h" | |
12 #include "SkTypes.h" | |
13 | 12 |
| 13 #if defined(SK_BUILD_FOR_WIN32) |
| 14 #include "SysTimer_windows.h" |
| 15 #elif defined(SK_BUILD_FOR_MAC) || defined(SK_BUILD_FOR_IOS) |
| 16 #include "SysTimer_mach.h" |
| 17 #elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID) |
| 18 #include "SysTimer_posix.h" |
| 19 #endif |
| 20 |
| 21 #if SK_SUPPORT_GPU |
| 22 #include "GpuTimer.h" |
| 23 #endif |
| 24 |
| 25 class SkGLContext; |
| 26 |
| 27 /** |
| 28 * SysTimers and GpuTimers are implemented orthogonally. |
| 29 * This class combines 2 SysTimers and a GpuTimer into one single, |
| 30 * platform specific Timer with a simple interface. The truncated |
| 31 * timer doesn't include the time required for the GPU to finish |
| 32 * its rendering. It should always be <= the un-truncated system |
| 33 * times and (for GPU configurations) can be used to roughly (very |
| 34 * roughly) gauge the GPU load/backlog. |
| 35 */ |
| 36 class Timer { |
| 37 public: |
| 38 explicit Timer(SkGLContext* gl = nullptr); |
| 39 |
| 40 void start(); |
| 41 void truncatedEnd(); |
| 42 void end(); |
| 43 |
| 44 // All times in milliseconds. |
| 45 double fCpu; |
| 46 double fWall; |
| 47 double fTruncatedCpu; |
| 48 double fTruncatedWall; |
| 49 double fGpu; |
| 50 |
| 51 private: |
| 52 SysTimer fSysTimer; |
| 53 SysTimer fTruncatedSysTimer; |
| 54 #if SK_SUPPORT_GPU |
| 55 GpuTimer fGpuTimer; |
| 56 #endif |
| 57 }; |
| 58 |
| 59 // Same as Timer above, supporting only fWall but with much lower overhead. |
| 60 // (Typically, ~30ns instead of Timer's ~1us.) |
14 class WallTimer { | 61 class WallTimer { |
15 public: | 62 public: |
16 WallTimer() : fWall(-1) {} | 63 WallTimer(); |
17 | 64 |
18 void start() { fWall = SkTime::GetNSecs(); } | 65 void start(); |
19 void end() { fWall = (SkTime::GetNSecs() - fWall) * 1e-6; } | 66 void end(); |
20 | 67 |
21 double fWall; // Milliseconds. | 68 double fWall; // Milliseconds. |
| 69 |
| 70 private: |
| 71 SysTimer fSysTimer; |
22 }; | 72 }; |
23 | 73 |
24 SkString HumanizeMs(double); | 74 SkString HumanizeMs(double); |
25 | 75 |
26 #endif | 76 #endif |
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