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-rw-r--r--test/time/tst-timerfd.c71
1 files changed, 71 insertions, 0 deletions
diff --git a/test/time/tst-timerfd.c b/test/time/tst-timerfd.c
new file mode 100644
index 000000000..5562ed74f
--- /dev/null
+++ b/test/time/tst-timerfd.c
@@ -0,0 +1,71 @@
+/* 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"