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      1 
      2 /*
      3  * Copyright 2011 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 #include "BenchTimer.h"
      9 #if defined(SK_BUILD_FOR_WIN32)
     10     #include "BenchSysTimer_windows.h"
     11 #elif defined(SK_BUILD_FOR_MAC)
     12     #include "BenchSysTimer_mach.h"
     13 #elif defined(SK_BUILD_FOR_UNIX) || defined(SK_BUILD_FOR_ANDROID)
     14     #include "BenchSysTimer_posix.h"
     15 #else
     16     #include "BenchSysTimer_c.h"
     17 #endif
     18 
     19 #if SK_SUPPORT_GPU
     20 #include "BenchGpuTimer_gl.h"
     21 #endif
     22 
     23 BenchTimer::BenchTimer(SkGLContextHelper* gl)
     24         : fCpu(-1.0)
     25         , fWall(-1.0)
     26         , fTruncatedCpu(-1.0)
     27         , fTruncatedWall(-1.0)
     28         , fGpu(-1.0)
     29 {
     30     fSysTimer = new BenchSysTimer();
     31     fTruncatedSysTimer = new BenchSysTimer();
     32 #if SK_SUPPORT_GPU
     33     if (gl) {
     34         fGpuTimer = new BenchGpuTimer(gl);
     35     } else {
     36         fGpuTimer = NULL;
     37     }
     38 #endif
     39 }
     40 
     41 BenchTimer::~BenchTimer() {
     42     delete fSysTimer;
     43     delete fTruncatedSysTimer;
     44 #if SK_SUPPORT_GPU
     45     delete fGpuTimer;
     46 #endif
     47 }
     48 
     49 void BenchTimer::start(double durationScale) {
     50     fDurationScale = durationScale;
     51 
     52     fSysTimer->startWall();
     53     fTruncatedSysTimer->startWall();
     54 #if SK_SUPPORT_GPU
     55     if (fGpuTimer) {
     56         fGpuTimer->startGpu();
     57     }
     58 #endif
     59     fSysTimer->startCpu();
     60     fTruncatedSysTimer->startCpu();
     61 }
     62 
     63 void BenchTimer::end() {
     64     fCpu = fSysTimer->endCpu() * fDurationScale;
     65 #if SK_SUPPORT_GPU
     66     //It is important to stop the cpu clocks first,
     67     //as the following will cpu wait for the gpu to finish.
     68     if (fGpuTimer) {
     69         fGpu = fGpuTimer->endGpu() * fDurationScale;
     70     }
     71 #endif
     72     fWall = fSysTimer->endWall() * fDurationScale;
     73 }
     74 
     75 void BenchTimer::truncatedEnd() {
     76     fTruncatedCpu = fTruncatedSysTimer->endCpu() * fDurationScale;
     77     fTruncatedWall = fTruncatedSysTimer->endWall() * fDurationScale;
     78 }
     79 
     80 WallTimer::WallTimer() : fWall(-1.0), fSysTimer(new BenchSysTimer) {}
     81 
     82 WallTimer::~WallTimer() {
     83     delete fSysTimer;
     84 }
     85 
     86 void WallTimer::start(double durationScale) {
     87     fDurationScale = durationScale;
     88     fSysTimer->startWall();
     89 }
     90 
     91 void WallTimer::end() {
     92     fWall = fSysTimer->endWall() * fDurationScale;
     93 }
     94 
     95