121 lines
3.4 KiB
C
121 lines
3.4 KiB
C
/*
|
|
* Copyright (c) 2013, 2015, 2022 Jonas 'Sortie' Termansen.
|
|
*
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
* copyright notice and this permission notice appear in all copies.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* time.c
|
|
* Measure process running time.
|
|
*/
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include <err.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <time.h>
|
|
#include <timespec.h>
|
|
#include <unistd.h>
|
|
|
|
static bool p;
|
|
static pid_t child_pid;
|
|
static struct timespec start_time, end_time;
|
|
|
|
void statistics(void)
|
|
{
|
|
clock_gettime(CLOCK_MONOTONIC, &end_time);
|
|
struct tmns ts;
|
|
timens(&ts);
|
|
struct timespec real_time = timespec_sub(end_time, start_time);
|
|
struct timespec execute_time =timespec_sub(ts.tmns_cutime, ts.tmns_utime);
|
|
struct timespec system_time = timespec_sub(ts.tmns_cstime, ts.tmns_stime);
|
|
struct timespec user_time = timespec_sub(execute_time, system_time);
|
|
|
|
if ( p )
|
|
{
|
|
fprintf(stderr, "real %li.%03li\n",
|
|
(long) real_time.tv_sec, real_time.tv_nsec / 1000000L);
|
|
fprintf(stderr, "user %li.%03li\n",
|
|
(long) user_time.tv_sec, user_time.tv_nsec / 1000000);
|
|
fprintf(stderr, "sys %li.%03li\n",
|
|
(long) system_time.tv_sec, system_time.tv_nsec / 1000000);
|
|
}
|
|
else
|
|
{
|
|
fprintf(stderr, "\n");
|
|
fprintf(stderr, "real\t%lim%li.%03li\n", (long) real_time.tv_sec / 60,
|
|
(long) real_time.tv_sec % 60, real_time.tv_nsec / 1000000L);
|
|
fprintf(stderr, "user\t%lim%li.%03li\n", (long) user_time.tv_sec / 60,
|
|
(long) user_time.tv_sec % 60, user_time.tv_nsec / 1000000);
|
|
fprintf(stderr, "sys\t%lim%li.%03li\n", (long) system_time.tv_sec / 60,
|
|
(long) system_time.tv_sec % 60, system_time.tv_nsec / 1000000);
|
|
}
|
|
}
|
|
|
|
void signal_handler(int signum)
|
|
{
|
|
int code;
|
|
waitpid(child_pid, &code, 0);
|
|
statistics();
|
|
raise(signum);
|
|
_exit(1);
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
int opt;
|
|
while ( (opt = getopt(argc, argv, "p")) != -1 )
|
|
{
|
|
switch ( opt )
|
|
{
|
|
case 'p': p = true; break;
|
|
default: return 1;
|
|
}
|
|
}
|
|
|
|
clock_gettime(CLOCK_MONOTONIC, &start_time);
|
|
sigset_t handleset, oldset;
|
|
sigemptyset(&handleset);
|
|
sigaddset(&handleset, SIGINT);
|
|
sigaddset(&handleset, SIGQUIT);
|
|
sigprocmask(SIG_BLOCK, &handleset, &oldset);
|
|
if ( (child_pid = fork()) < 0 )
|
|
err(1, "fork");
|
|
if ( !child_pid )
|
|
{
|
|
sigprocmask(SIG_SETMASK, &oldset, NULL);
|
|
if ( argc <= optind )
|
|
exit(0);
|
|
execvp(argv[optind], argv + optind);
|
|
err(127, "%s", argv[optind]);
|
|
}
|
|
struct sigaction sa;
|
|
memset(&sa, 0, sizeof(sa));
|
|
sa.sa_handler = signal_handler;
|
|
sa.sa_flags = SA_RESETHAND;
|
|
sigaction(SIGINT, &sa, NULL);
|
|
sigaction(SIGQUIT, &sa, NULL);
|
|
int code = 0;
|
|
sigprocmask(SIG_SETMASK, &oldset, NULL);
|
|
waitpid(child_pid, &code, 0);
|
|
signal(SIGINT, SIG_DFL);
|
|
signal(SIGQUIT, SIG_DFL);
|
|
statistics();
|
|
if ( WIFSIGNALED(code) )
|
|
raise(WTERMSIG(code));
|
|
return WEXITSTATUS(code);
|
|
}
|