diff options
Diffstat (limited to 'usr.bin/time/time.c')
| -rw-r--r-- | usr.bin/time/time.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/usr.bin/time/time.c b/usr.bin/time/time.c new file mode 100644 index 0000000..72c3766 --- /dev/null +++ b/usr.bin/time/time.c @@ -0,0 +1,140 @@ +/* + * Copyright (c) 1987, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char copyright[] = +"@(#) Copyright (c) 1987, 1988, 1993\n\ + The Regents of the University of California. All rights reserved.\n"; +#endif /* not lint */ + +#ifndef lint +static char sccsid[] = "@(#)time.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <sys/types.h> +#include <sys/time.h> +#include <sys/resource.h> +#include <sys/signal.h> +#include <stdio.h> + +main(argc, argv) + int argc; + char **argv; +{ + extern int optind; + register int pid; + int ch, status, lflag; + struct timeval before, after; + struct rusage ru; + + lflag = 0; + while ((ch = getopt(argc, argv, "l")) != EOF) + switch((char)ch) { + case 'l': + lflag = 1; + break; + case '?': + default: + fprintf(stderr, "usage: time [-l] command.\n"); + exit(1); + } + + if (!(argc -= optind)) + exit(0); + argv += optind; + + gettimeofday(&before, (struct timezone *)NULL); + switch(pid = vfork()) { + case -1: /* error */ + perror("time"); + exit(1); + /* NOTREACHED */ + case 0: /* child */ + execvp(*argv, argv); + perror(*argv); + _exit(1); + /* NOTREACHED */ + } + /* parent */ + (void)signal(SIGINT, SIG_IGN); + (void)signal(SIGQUIT, SIG_IGN); + while (wait3(&status, 0, &ru) != pid); /* XXX use waitpid */ + gettimeofday(&after, (struct timezone *)NULL); + if (status&0377) + fprintf(stderr, "Command terminated abnormally.\n"); + after.tv_sec -= before.tv_sec; + after.tv_usec -= before.tv_usec; + if (after.tv_usec < 0) + after.tv_sec--, after.tv_usec += 1000000; + fprintf(stderr, "%9ld.%02ld real ", after.tv_sec, after.tv_usec/10000); + fprintf(stderr, "%9ld.%02ld user ", + ru.ru_utime.tv_sec, ru.ru_utime.tv_usec/10000); + fprintf(stderr, "%9ld.%02ld sys\n", + ru.ru_stime.tv_sec, ru.ru_stime.tv_usec/10000); + if (lflag) { + int hz = 100; /* XXX */ + long ticks; + + ticks = hz * (ru.ru_utime.tv_sec + ru.ru_stime.tv_sec) + + hz * (ru.ru_utime.tv_usec + ru.ru_stime.tv_usec) / 1000000; + fprintf(stderr, "%10ld %s\n", + ru.ru_maxrss, "maximum resident set size"); + fprintf(stderr, "%10ld %s\n", + ru.ru_ixrss / ticks, "average shared memory size"); + fprintf(stderr, "%10ld %s\n", + ru.ru_idrss / ticks, "average unshared data size"); + fprintf(stderr, "%10ld %s\n", + ru.ru_isrss / ticks, "average unshared stack size"); + fprintf(stderr, "%10ld %s\n", + ru.ru_minflt, "page reclaims"); + fprintf(stderr, "%10ld %s\n", + ru.ru_majflt, "page faults"); + fprintf(stderr, "%10ld %s\n", + ru.ru_nswap, "swaps"); + fprintf(stderr, "%10ld %s\n", + ru.ru_inblock, "block input operations"); + fprintf(stderr, "%10ld %s\n", + ru.ru_oublock, "block output operations"); + fprintf(stderr, "%10ld %s\n", + ru.ru_msgsnd, "messages sent"); + fprintf(stderr, "%10ld %s\n", + ru.ru_msgrcv, "messages received"); + fprintf(stderr, "%10ld %s\n", + ru.ru_nsignals, "signals received"); + fprintf(stderr, "%10ld %s\n", + ru.ru_nvcsw, "voluntary context switches"); + fprintf(stderr, "%10ld %s\n", + ru.ru_nivcsw, "involuntary context switches"); + } + exit (status>>8); +} |
