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//
// MIT License
// Copyright (c) 2019 Jonathan R. Madsen
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED
// "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
// LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// ----------------------------------------------------------------------
// class Timer
//
// Implementation
// 29.04.97 G.Cosmo Added timings for Windows systems
#include "PTL/Timer.hh"
#include <iomanip>
#include <sstream>
#include <stdexcept>
#include <string>
using namespace PTL;
#if defined(IRIX6_2)
# if defined(_XOPEN_SOURCE) && (_XOPEN_SOURCE_EXTENDED == 1)
# define __vfork vfork
# endif
#endif
#if defined(WIN32) || defined(_WIN32) || defined(WIN64) || defined(_WIN64)
# include <sys/types.h>
# include <windows.h>
//======================================================================================//
// extract milliseconds time unit
int
sysconf(int a)
{
if(a == _SC_CLK_TCK)
return 1000;
else
return 0;
}
//======================================================================================//
static clock_t
filetime2msec(FILETIME* t)
{
return (clock_t)((((float) t->dwHighDateTime) * 429496.7296) +
(((float) t->dwLowDateTime) * .0001));
}
//======================================================================================//
clock_t
times(struct tms* t)
{
FILETIME ct = { 0, 0 }, et = { 0, 0 }, st = { 0, 0 }, ut = { 0, 0 }, rt = { 0, 0 };
SYSTEMTIME realtime;
GetSystemTime(&realtime);
SystemTimeToFileTime(&realtime, &rt); // get real time in 10^-9 sec
if(t != 0)
{
GetProcessTimes(GetCurrentProcess(), &ct, &et, &st,
&ut); // get process time in 10^-9 sec
t->tms_utime = t->tms_cutime = filetime2msec(&ut);
t->tms_stime = t->tms_cstime = filetime2msec(&st);
}
return filetime2msec(&rt);
}
//======================================================================================//
#endif /* WIN32 */
//======================================================================================//
Timer::Timer()
: fValidTimes(false)
{}
//======================================================================================//
double
Timer::GetRealElapsed() const
{
if(!fValidTimes)
{
throw std::runtime_error("Timer::GetRealElapsed() - "
"Timer not stopped or times not recorded!");
}
std::chrono::duration<double> diff = fEndRealTime - fStartRealTime;
return diff.count();
}
//======================================================================================//
double
Timer::GetSystemElapsed() const
{
if(!fValidTimes)
{
throw std::runtime_error("Timer::GetSystemElapsed() - "
"Timer not stopped or times not recorded!");
}
double diff = fEndTimes.tms_stime - fStartTimes.tms_stime;
return diff / sysconf(_SC_CLK_TCK);
}
//======================================================================================//
double
Timer::GetUserElapsed() const
{
if(!fValidTimes)
{
throw std::runtime_error("Timer::GetUserElapsed() - "
"Timer not stopped or times not recorded!");
}
double diff = fEndTimes.tms_utime - fStartTimes.tms_utime;
return diff / sysconf(_SC_CLK_TCK);
}
//======================================================================================//
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