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// =================================================================================================
// Copyright 2006 Adobe Systems Incorporated
// All Rights Reserved.
//
// NOTICE: Adobe permits you to use, modify, and distribute this file in accordance with the terms
// of the Adobe license agreement accompanying it.
// =================================================================================================
#include "public/include/XMP_Environment.h"
#include "public/include/XMP_Const.h"
#include "source/PerfUtils.hpp"
#include <stdio.h>
#if XMP_WinBuild
#pragma warning ( disable : 4996 ) // '...' was declared deprecated
#endif
// =================================================================================================
// =================================================================================================
#if XMP_WinBuild
#pragma warning ( disable : 4800 ) // forcing bool to 0/1
const char * PerfUtils::GetTimerInfo()
{
LARGE_INTEGER freq;
static char msgBuffer[1000];
bool ok = (bool) QueryPerformanceFrequency ( &freq );
if ( ! ok ) throw XMP_Error ( kXMPErr_ExternalFailure, "Failure from QueryPerformanceFrequency" );
if ( freq.HighPart != 0 ) {
return "Windows PerfUtils measures finer than nanoseconds, using the QueryPerformanceCounter() timer";
}
double rate = 1.0 / (double)freq.LowPart;
_snprintf ( msgBuffer, sizeof(msgBuffer),
"Windows PerfUtils measures %e second, using the QueryPerformanceCounter() timer", rate );
return msgBuffer;
} // PerfUtils::GetTimerInfo
// ------------------------------------------------------------------------------------------------
PerfUtils::MomentValue PerfUtils::NoteThisMoment()
{
LARGE_INTEGER now;
bool ok = (bool) QueryPerformanceCounter ( &now );
if ( ! ok ) throw XMP_Error ( kXMPErr_ExternalFailure, "Failure from QueryPerformanceCounter" );
return now.QuadPart;
} // PerfUtils::NoteThisMoment
// ------------------------------------------------------------------------------------------------
double PerfUtils::GetElapsedSeconds ( PerfUtils::MomentValue start, PerfUtils::MomentValue finish )
{
LARGE_INTEGER freq;
bool ok = (bool) QueryPerformanceFrequency ( &freq );
if ( ! ok ) throw XMP_Error ( kXMPErr_ExternalFailure, "Failure from QueryPerformanceFrequency" );
const double scale = (double)freq.QuadPart;
const double elapsed = (double)(finish - start) / scale;
return elapsed;
} // PerfUtils::GetElapsedSeconds
#endif
// =================================================================================================
#if XMP_UNIXBuild
const char * PerfUtils::GetTimerInfo()
{
return "UNIX PerfUtils measures nano seconds, using the POSIX clock_gettime() timer";
} // PerfUtils::GetTimerInfo
// ------------------------------------------------------------------------------------------------
PerfUtils::MomentValue PerfUtils::NoteThisMoment()
{
MomentValue moment = kZeroMoment;
if ( clock_gettime( CLOCK_MONOTONIC, &moment ) != 0 )
throw XMP_Error( kXMPErr_ExternalFailure, "Failure from clock_gettime" );
return moment;
} // PerfUtils::NoteThisMoment
// ------------------------------------------------------------------------------------------------
double PerfUtils::GetElapsedSeconds ( PerfUtils::MomentValue start, PerfUtils::MomentValue finish )
{
double startInSeconds = start.tv_sec + start.tv_nsec / 1000000000.0;
double finishInSeconds = finish.tv_sec + finish.tv_nsec / 1000000000.0;
return finishInSeconds - startInSeconds;
} // PerfUtils::GetElapsedSeconds
#endif
// =================================================================================================
#if XMP_MacBuild | XMP_iOSBuild
#include <mach/mach.h>
#include <mach/mach_time.h>
const char * PerfUtils::GetTimerInfo()
{
return "Mac PerfUtils measures nano seconds, using the mach_absolute_time() timer";
} // PerfUtils::GetTimerInfo
// ------------------------------------------------------------------------------------------------
PerfUtils::MomentValue PerfUtils::NoteThisMoment()
{
return mach_absolute_time();
} // PerfUtils::NoteThisMoment
// ------------------------------------------------------------------------------------------------
double PerfUtils::GetElapsedSeconds ( PerfUtils::MomentValue start, PerfUtils::MomentValue finish )
{
static mach_timebase_info_data_t sTimebaseInfo;
static double sConversionFactor = 0.0;
// If this is the first time we've run, get the timebase.
// We can use denom == 0 to indicate that sTimebaseInfo is
// uninitialized because it makes no sense to have a zero
// denominator is a fraction.
if ( sTimebaseInfo.denom == 0 ) {
mach_timebase_info(&sTimebaseInfo);
sConversionFactor = ((double)sTimebaseInfo.denom / (double)sTimebaseInfo.numer);
sConversionFactor /= 1000000000.0;
}
return ( finish - start ) * sConversionFactor;
} // PerfUtils::GetElapsedSeconds
#endif
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