1 /*
2 * Copyright 2011 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7 #include "Timer.h"
8
Timer(SkGLContext * gl)9 Timer::Timer(SkGLContext* gl)
10 : fCpu(-1.0)
11 , fWall(-1.0)
12 , fTruncatedCpu(-1.0)
13 , fTruncatedWall(-1.0)
14 , fGpu(-1.0)
15 #if SK_SUPPORT_GPU
16 , fGpuTimer(gl)
17 #endif
18 {}
19
start()20 void Timer::start() {
21 fSysTimer.startWall();
22 fTruncatedSysTimer.startWall();
23 #if SK_SUPPORT_GPU
24 fGpuTimer.start();
25 #endif
26 fSysTimer.startCpu();
27 fTruncatedSysTimer.startCpu();
28 }
29
end()30 void Timer::end() {
31 fCpu = fSysTimer.endCpu();
32 #if SK_SUPPORT_GPU
33 //It is important to stop the cpu clocks first,
34 //as the following will cpu wait for the gpu to finish.
35 fGpu = fGpuTimer.end();
36 #endif
37 fWall = fSysTimer.endWall();
38 }
39
truncatedEnd()40 void Timer::truncatedEnd() {
41 fTruncatedCpu = fTruncatedSysTimer.endCpu();
42 fTruncatedWall = fTruncatedSysTimer.endWall();
43 }
44
WallTimer()45 WallTimer::WallTimer() : fWall(-1.0) {}
46
start()47 void WallTimer::start() {
48 fSysTimer.startWall();
49 }
50
end()51 void WallTimer::end() {
52 fWall = fSysTimer.endWall();
53 }
54
HumanizeMs(double ms)55 SkString HumanizeMs(double ms) {
56 if (ms > 60e+3) return SkStringPrintf("%.3gm", ms/60e+3);
57 if (ms > 1e+3) return SkStringPrintf("%.3gs", ms/1e+3);
58 if (ms < 1e-3) return SkStringPrintf("%.3gns", ms*1e+6);
59 #ifdef SK_BUILD_FOR_WIN
60 if (ms < 1) return SkStringPrintf("%.3gus", ms*1e+3);
61 #else
62 if (ms < 1) return SkStringPrintf("%.3gµs", ms*1e+3);
63 #endif
64 return SkStringPrintf("%.3gms", ms);
65 }
66