143 lines
3.2 KiB
C
143 lines
3.2 KiB
C
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//
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// The CPerfTimer class can be used to time operations to an accuracy of
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// around 1 microsecond.
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//
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// "#define TIMING 1" to turn Timer macros on.
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#undef DeclarePerfTimerOn
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#undef DeclarePerfTimerOff
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#undef PerfTimerOn_
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#undef PerfTimerOff_
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#undef PerfTimerResetTotal_
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#undef PerfTimerDumpTotal_
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#undef PerfTimerReset_
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#undef PerfTimerDump_
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#undef DeclarePerfTimer
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#undef PerfTimerResetTotal
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#undef PerfTimerDumpTotal
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#undef PerfTimerReset
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#undef PerfTimerDump
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#if TIMING
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// #pragma message(__FILE__ " : warning : PerfTimer macros enabled")
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#define DeclarePerfTimerOn(t, sz) CPerfTimer t(sz)
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#define DeclarePerfTimerOff(t, sz) CPerfTimer t(sz, FALSE)
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#define PerfTimerOn_(perf) perf.On()
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#define PerfTimerOff_(perf) perf.Off()
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#define PerfTimerResetTotal_(perf) perf.ResetTotal()
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#define PerfTimerDumpTotal_(perf,sz) perf.DumpTotal(sz)
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#define PerfTimerReset_(perf) perf.Reset()
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#define PerfTimerDump_(perf,sz) perf.Dump(sz)
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#define DeclarePerfTimer(sz) CPerfTimer perf(sz)
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#define PerfTimerResetTotal() PerfTimerResetTotal_(perf)
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#define PerfTimerDumpTotal(sz) PerfTimerDumpTotal_(perf, sz)
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#define PerfTimerReset() PerfTimerReset_(perf)
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#define PerfTimerDump(sz) PerfTimerDump_(perf,sz)
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class CPerfTimer
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{
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public:
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CPerfTimer(const char *sz)
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{
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Init(sz, TRUE);
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}
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CPerfTimer(const char *sz, BOOL fEnabled)
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{
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Init(sz, fEnabled);
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}
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void Init(const char *sz, BOOL fEnabled)
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{
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m_sz = sz;
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m_cEnabled = fEnabled ? 1 : 0;
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m_ulTimeStart = 0;
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m_ulTimeTotal = 0;
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QueryPerformanceFrequency((LARGE_INTEGER *)&m_ulFreq);
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}
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void On(void)
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{
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m_cEnabled++;
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}
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void Off()
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{
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m_cEnabled--;
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}
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void ResetTotal(void)
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{
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m_ulTimeTotal = 0;
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}
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void Reset(void)
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{
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QueryPerformanceCounter((LARGE_INTEGER *) &m_ulTimeStart);
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}
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void Dump(const char *sz)
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{
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_int64 ulTime;
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QueryPerformanceCounter((LARGE_INTEGER *) &ulTime);
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ulTime -= m_ulTimeStart;
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m_ulTimeTotal += ulTime;
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DumpTime(sz, ulTime);
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Reset();
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}
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void DumpTotal(const char *sz)
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{
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DumpTime(sz, m_ulTimeTotal);
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}
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void DumpTime(const char *sz, _int64 ulTime)
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{
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if (m_cEnabled > 0)
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{
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_int64 nSecs = (ulTime / m_ulFreq);
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_int64 nMilliSecs = ((ulTime * 1000L) / m_ulFreq) % 1000;
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_int64 nMicroSecs = ((ulTime * 1000000L) / m_ulFreq) % 1000;
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TRACE("%s %s: %lu s %lu.%3.3lu ms\n", m_sz, sz,
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(ULONG) nSecs, (ULONG) nMilliSecs, (ULONG) nMicroSecs);
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}
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}
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protected:
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const char * m_sz;
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_int64 m_ulTimeStart;
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_int64 m_ulTimeTotal;
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_int64 m_ulFreq;
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int m_cEnabled;
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};
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#else
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#define DeclarePerfTimerOn(sz,t)
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#define DeclarePerfTimerOff(sz,t)
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#define PerfTimerOn_(perf)
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#define PerfTimerOff_(perf)
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#define PerfTimerResetTotal_(perf)
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#define PerfTimerDumpTotal_(perf,sz)
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#define PerfTimerReset_(perf)
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#define PerfTimerDump_(perf,sz)
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#define DeclarePerfTimer(sz)
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#define PerfTimerResetTotal()
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#define PerfTimerDumpTotal(sz)
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#define PerfTimerReset()
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#define PerfTimerDump(sz)
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#endif
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