/[svn]/linuxsampler/trunk/src/engines/gig/Profiler.cpp
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revision 326 by senkov, Tue Dec 21 04:59:11 2004 UTC revision 770 by schoenebeck, Sun Sep 11 15:56:29 2005 UTC
# Line 27  namespace LinuxSampler { namespace gig { Line 27  namespace LinuxSampler { namespace gig {
27    
28          unsigned long long Profiler::profilingSamples = 0;          unsigned long long Profiler::profilingSamples = 0;
29          unsigned long long Profiler::profilingTime = 0;          unsigned long long Profiler::profilingTime = 0;
30          unsigned long long Profiler::ticksPerSecond = 0;          double Profiler::tsPerSecond = 0;
31            bool Profiler::bEnabled = false;
32    
33          void Profiler::Calibrate( void )          void Profiler::Calibrate( void )
34          {          {
35                  clock_t start_time = clock();                  clock_t start_time = clock();
36                  unsigned long long start_clocks = Stamp();                  RTMath::time_stamp_t start_clocks = Stamp();
37                  volatile int a = 1;                  volatile int a = 1;
38                  volatile int b = 1;                  volatile int b = 1;
39                  for (volatile int i = 0; i < 100000000; i++)                  for (volatile int i = 0; i < 100000000; i++)
# Line 40  namespace LinuxSampler { namespace gig { Line 41  namespace LinuxSampler { namespace gig {
41                          a += b;                          a += b;
42                  }                  }
43                  clock_t stop_time = clock();                  clock_t stop_time = clock();
44                  unsigned long long stop_clocks = Stamp();                  RTMath::time_stamp_t stop_clocks = Stamp();
45                  unsigned int diff_ticks = (unsigned int) (stop_clocks - start_clocks);                  double diff_ticks = (stop_clocks - start_clocks);
46                  double diff_time = ((stop_time - start_time) / (double(CLOCKS_PER_SEC)));                  double diff_time = ((stop_time - start_time) / (double(CLOCKS_PER_SEC)));
47                  ticksPerSecond = (unsigned long long)(double(diff_ticks) / diff_time);                  tsPerSecond = diff_ticks / diff_time;
48          }          }
49    
50          unsigned int Profiler::GetBogoVoices(unsigned int SamplingFreq)          unsigned int Profiler::GetBogoVoices(unsigned int SamplingFreq)
51          {          {
52                  if (profilingSamples == 0) return 0;                  if (profilingSamples == 0) return 0;
53                  unsigned int avgTicks = profilingTime / profilingSamples;                  double avgTicks = ((double) profilingTime) / ((double) profilingSamples);
54                  unsigned int samplesPerSecond = ticksPerSecond / avgTicks;                  unsigned int samplesPerSecond = (unsigned int) (tsPerSecond / avgTicks);
55                  unsigned int bogoVoices = samplesPerSecond / SamplingFreq;                  unsigned int bogoVoices = samplesPerSecond / SamplingFreq;
56                  return bogoVoices;                  return bogoVoices;
57          }          }
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