Set errno for ±Inf.
[glibc/history.git] / nptl / tst-sem5.c
blobcb85b8e7690de3696bda8eb09d0eb685553186bb
1 /* Copyright (C) 2002, 2003 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, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
18 02111-1307 USA. */
20 #include <errno.h>
21 #include <semaphore.h>
22 #include <stdio.h>
23 #include <time.h>
24 #include <unistd.h>
25 #include <sys/time.h>
28 static int
29 do_test (void)
31 sem_t s;
32 struct timespec ts;
33 struct timeval tv;
35 if (sem_init (&s, 0, 1) == -1)
37 puts ("sem_init failed");
38 return 1;
41 if (TEMP_FAILURE_RETRY (sem_wait (&s)) == -1)
43 puts ("sem_wait failed");
44 return 1;
47 if (gettimeofday (&tv, NULL) != 0)
49 puts ("gettimeofday failed");
50 return 1;
53 TIMEVAL_TO_TIMESPEC (&tv, &ts);
55 /* We wait for half a second. */
56 ts.tv_nsec += 500000000;
57 if (ts.tv_nsec >= 1000000000)
59 ++ts.tv_sec;
60 ts.tv_nsec -= 1000000000;
63 errno = 0;
64 if (TEMP_FAILURE_RETRY (sem_timedwait (&s, &ts)) != -1)
66 puts ("sem_timedwait succeeded");
67 return 1;
69 if (errno != ETIMEDOUT)
71 printf ("sem_timedwait return errno = %d instead of ETIMEDOUT\n",
72 errno);
73 return 1;
76 return 0;
79 #define TEST_FUNCTION do_test ()
80 #include "../test-skeleton.c"