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/* See LICENSE file for copyright and license details. */
#include <sys/times.h>
#include <sys/wait.h>
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include "util.h"
static void
usage(void)
{
eprintf("usage: %s [-p] cmd [arg ...]\n", argv0);
}
int
main(int argc, char *argv[])
{
pid_t pid;
struct tms tms; /* user and sys times */
clock_t r0, r1; /* real time */
long ticks; /* per second */
int status, savederrno, ret = 0;
ARGBEGIN {
case 'p':
break;
default:
usage();
} ARGEND;
if (!argc)
usage();
if ((ticks = sysconf(_SC_CLK_TCK)) <= 0)
eprintf("sysconf _SC_CLK_TCK:");
if ((r0 = times(&tms)) < 0)
eprintf("times:");
switch ((pid = fork())) {
case -1:
eprintf("fork:");
case 0:
execvp(argv[0], argv);
savederrno = errno;
weprintf("execvp %s:", argv[0]);
_exit(126 + (savederrno == ENOENT));
default:
break;
}
waitpid(pid, &status, 0);
if ((r1 = times(&tms)) < 0)
eprintf("times:");
if (WIFSIGNALED(status)) {
fprintf(stderr, "Command terminated by signal %d\n",
WTERMSIG(status));
ret = 128 + WTERMSIG(status);
}
fprintf(stderr, "real %f\nuser %f\nsys %f\n",
(r1 - r0) / (double)ticks,
tms.tms_cutime / (double)ticks,
tms.tms_cstime / (double)ticks);
if (WIFEXITED(status))
ret = WEXITSTATUS(status);
return ret;
}