2b72262b4f
I hereby relicense all my work on Sortix under the ISC license as below. All Sortix contributions by other people are already under this license, are not substantial enough to be copyrightable, or have been removed. All imported code from other projects is compatible with this license. All GPL licensed code from other projects had previously been removed. Copyright 2011-2016 Jonas 'Sortie' Termansen and contributors. 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.
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/*
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* Copyright (c) 2013, 2015 Jonas 'Sortie' Termansen.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* time.c
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* Measure process running time.
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*/
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <error.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <timespec.h>
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#include <unistd.h>
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static pid_t child_pid;
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static struct timespec start_time, end_time;
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void statistics(void)
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{
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clock_gettime(CLOCK_MONOTONIC, &end_time);
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struct tmns tmns;
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timens(&tmns);
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struct timespec real_time = timespec_sub(end_time, start_time);
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struct timespec execute_time = timespec_sub(tmns.tmns_cutime, tmns.tmns_utime);
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struct timespec system_time = timespec_sub(tmns.tmns_cstime, tmns.tmns_stime);
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struct timespec user_time = timespec_sub(execute_time, system_time);
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fprintf(stderr, "\n");
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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);
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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);
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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);
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}
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void signal_handler(int signum)
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{
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int code;
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waitpid(child_pid, &code, 0);
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statistics();
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raise(signum);
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_exit(1);
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}
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int main(int argc, char* argv[])
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{
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clock_gettime(CLOCK_MONOTONIC, &start_time);
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sigset_t handleset, oldset;
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sigemptyset(&handleset);
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sigaddset(&handleset, SIGINT);
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sigaddset(&handleset, SIGQUIT);
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sigprocmask(SIG_BLOCK, &handleset, &oldset);
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if ( (child_pid = fork()) < 0 )
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error(1, errno, "fork");
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if ( !child_pid )
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{
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sigprocmask(SIG_SETMASK, &oldset, NULL);
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if ( argc <= 1 )
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exit(0);
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execvp(argv[1], argv+1);
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error(127, errno, "%s", argv[1]);
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}
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struct sigaction sa;
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memset(&sa, 0, sizeof(sa));
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sa.sa_handler = signal_handler;
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sa.sa_flags = SA_RESETHAND;
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sigaction(SIGINT, &sa, NULL);
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sigaction(SIGQUIT, &sa, NULL);
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int code = 0;
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sigprocmask(SIG_SETMASK, &oldset, NULL);
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waitpid(child_pid, &code, 0);
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signal(SIGINT, SIG_DFL);
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signal(SIGQUIT, SIG_DFL);
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statistics();
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if ( WIFSIGNALED(code) )
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raise(WTERMSIG(code));
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return WEXITSTATUS(code);
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}
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