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