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glibc  2.9
tst-sem6.c
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00001 /* Copyright (C) 2003 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <errno.h>
00021 #include <semaphore.h>
00022 #include <signal.h>
00023 #include <stdio.h>
00024 #include <unistd.h>
00025 
00026 
00027 static void
00028 handler (int sig)
00029 {
00030   struct sigaction sa;
00031 
00032   sa.sa_handler = SIG_DFL;
00033   sa.sa_flags = 0;
00034   sigemptyset (&sa.sa_mask);
00035 
00036   sigaction (SIGALRM, &sa, NULL);
00037 
00038   /* Rearm the timer.  */
00039   alarm (1);
00040 }
00041 
00042 
00043 static int
00044 do_test (void)
00045 {
00046   sem_t s;
00047   struct sigaction sa;
00048 
00049   sa.sa_handler = handler;
00050   sa.sa_flags = 0;
00051   sigemptyset (&sa.sa_mask);
00052 
00053   sigaction (SIGALRM, &sa, NULL);
00054 
00055   if (sem_init (&s, 0, 0) == -1)
00056     {
00057       puts ("init failed");
00058       return 1;
00059     }
00060 
00061   /* Set an alarm for 1 second.  The wrapper will expect this.  */
00062   alarm (1);
00063 
00064   int res = sem_wait (&s);
00065   if (res == 0)
00066     {
00067       puts ("wait succeeded");
00068       return 1;
00069     }
00070   if (res != -1 || errno != EINTR)
00071     {
00072       puts ("wait didn't fail with EINTR");
00073       return 1;
00074     }
00075 
00076   return 0;
00077 }
00078 
00079 #define TIMEOUT 3
00080 #define TEST_FUNCTION do_test ()
00081 #include "../test-skeleton.c"