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/*
Timing.c Measuring Program running time
This module contains functions for measuring program running time.
Copyright (C) 2004, Wong Chi Kwong.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#ifdef RUSAGE
#include <sys/resource.h>
#else
#ifdef TIME_BY_CLOCK
#include <time.h>
#else
#include <sys/time.h>
#endif
#endif
#include "Timing.h"
void asciiTime(const char *c){
time_t now = time(NULL);
fprintf(stderr, "\n%s\n%s", c, asctime(localtime(&now)));
}
double setStartTime() {
#ifdef RUSAGE
double usertime, systime;
struct rusage usage;
getrusage(RUSAGE_SELF, &usage);
usertime = (double)usage.ru_utime.tv_sec + (double)usage.ru_utime.tv_usec / 1000000.0;
systime = (double)usage.ru_stime.tv_sec + (double)usage.ru_stime.tv_usec / 1000000.0;
return(usertime + systime);
#else
#ifdef TIME_BY_CLOCK
return (double)clock() / (double)CLOCKS_PER_SEC;
#else
struct timeval tp;
gettimeofday(&tp, NULL);
return (double)tp.tv_sec + (double)tp.tv_usec / (double)1000000;
#endif
#endif
}
double getElapsedTime(double startTime) {
#ifdef RUSAGE
double usertime, systime;
struct rusage usage;
getrusage(RUSAGE_SELF, &usage);
usertime = (double)usage.ru_utime.tv_sec + (double)usage.ru_utime.tv_usec / 1000000.0;
systime = (double)usage.ru_stime.tv_sec + (double)usage.ru_stime.tv_usec / 1000000.0;
return (usertime + systime) - startTime;
#else
#ifdef TIME_BY_CLOCK
return (double)clock() / (double)CLOCKS_PER_SEC - startTime;
#else
struct timeval tp;
gettimeofday(&tp, NULL);
return (double)tp.tv_sec + (double)tp.tv_usec / (double)1000000 - startTime;
#endif
#endif
}
void printElapsedTime(FILE *file, const int printHour, const int printMin, const int printSec,
const int secNumberOfDecimal, const double seconds) {
printElapsedTimeNoNewLine(file, printHour, printMin, printSec, 0, secNumberOfDecimal, seconds);
fprintf(file, "\n");
}
void printElapsedTimeNoNewLine(FILE *file, const int printHour, const int printMin, const int printSec,
const int secMinPrintLength, const int secNumberOfDecimal, const double seconds) {
int hour, min;
double sec;
char secondDisplay[8] = "%0.0f s";
#ifdef DEBUG
if (printHour && !printMin && printSec) {
fprintf(stderr, "printElapsedTime(): Cannot skip minute only!\n");
exit(1);
}
if (secNumberOfDecimal > 9) {
fprintf(stderr, "printElapsedTime(): secNumberOfDecimal > 9!\n");
exit(1);
}
#endif
secondDisplay[1] = secondDisplay[1] + (char)secMinPrintLength;
secondDisplay[3] = secondDisplay[3] + (char)secNumberOfDecimal;
sec = seconds;
min = (int)(seconds / 60);
if (!printSec && printMin) {
if (seconds - min * 60 >= 30) {
min++;
}
}
if (printMin) {
sec -= min * 60;
}
hour = min / 60;
if (!printMin) {
min = hour * 60;
if (min >= 30) {
hour++;
}
}
if (printHour) {
min -= hour * 60;
}
if (printHour) {
fprintf(file, "%d h ", hour);
}
if (printMin) {
fprintf(file, "%d m ", min);
}
if (printSec) {
fprintf(file, secondDisplay, sec);
}
}
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