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/* vi: set sw=4 ts=4 sts=4: */
/*
* timerfd test for uClibc
* Copyright (C) 2012 by Kevin Cernekee <cernekee@gmail.com>
*
* Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <error.h>
#include <signal.h>
#include <stdint.h>
#include <inttypes.h>
#include <time.h>
#include <sys/timerfd.h>
#include <sys/fcntl.h>
static int
do_test(void)
{
int fd, ret, result = 0;
struct itimerspec s;
uint64_t val;
time_t start, now;
fd = timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK);
if (fd < 0) {
perror("timerfd() failed");
result = 1;
}
s.it_value.tv_sec = 1;
s.it_value.tv_nsec = 0;
s.it_interval.tv_sec = 0;
s.it_interval.tv_nsec = 0;
timerfd_settime(fd, 0, &s, NULL);
start = time(NULL);
/* this should return immediately with EAGAIN due to TFD_NONBLOCK */
ret = read(fd, &val, sizeof(val));
if (ret != -1 || errno != EAGAIN) {
error(0, 0, "first read() returned %d", ret);
result = 1;
}
/* let the timer expire, then check it again */
do {
now = time(NULL);
} while (now - start < 2);
ret = read(fd, &val, sizeof(val));
if (ret != sizeof(val)) {
error(0, 0, "second read() returned %d", ret);
result = 1;
}
/* we are expecting a single expiration, since it_interval is 0 */
if (val != 1) {
error(0, 0, "wrong number of expirations: %" PRIx64, val);
result = 1;
}
return result;
}
#define TIMEOUT 5
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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