1 /* Copyright (C) 2002-2017 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3 Contributed by Ulrich Drepper <drepper@redhat.com>, 2002.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
20 #include <semaphore.h>
34 if (sem_init (&s
, 0, 1) == -1)
36 puts ("sem_init failed");
40 if (TEMP_FAILURE_RETRY (sem_wait (&s
)) == -1)
42 puts ("sem_wait failed");
46 if (gettimeofday (&tv
, NULL
) != 0)
48 puts ("gettimeofday failed");
52 TIMEVAL_TO_TIMESPEC (&tv
, &ts
);
54 /* We wait for half a second. */
55 ts
.tv_nsec
+= 500000000;
56 if (ts
.tv_nsec
>= 1000000000)
59 ts
.tv_nsec
-= 1000000000;
63 if (TEMP_FAILURE_RETRY (sem_timedwait (&s
, &ts
)) != -1)
65 puts ("sem_timedwait succeeded");
68 if (errno
!= ETIMEDOUT
)
70 printf ("sem_timedwait return errno = %d instead of ETIMEDOUT\n",
76 if (clock_gettime (CLOCK_REALTIME
, &ts2
) != 0)
78 puts ("clock_gettime failed");
82 if (ts2
.tv_sec
< ts
.tv_sec
83 || (ts2
.tv_sec
== ts
.tv_sec
&& ts2
.tv_nsec
< ts
.tv_nsec
))
85 puts ("timeout too short");
92 #define TEST_FUNCTION do_test ()
93 #include "../test-skeleton.c"