signal/tst-raise.c

   1 /* Copyright (C) 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
   4
   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.
   9
  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.
  14
  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.  */
  19
  20 #include <errno.h>
  21 #include <error.h>
  22 #include <signal.h>
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 volatile int count;
  27
  28 void
  29 sh (int sig)
  30 {
  31   ++count;
  32 }
  33
  34 int
  35 main (void)
  36 {
  37   struct sigaction sa;
  38   sa.sa_handler = sh;
  39   sigemptyset (&sa.sa_mask);
  40   sa.sa_flags = 0;
  41   if (sigaction (SIGUSR1, &sa, NULL) < 0)
  42     {
  43       printf ("sigaction failed: %m\n");
  44       exit (1);
  45     }
  46   if (raise (SIGUSR1) < 0)
  47     {
  48       printf ("first raise failed: %m\n");
  49       exit (1);
  50     }
  51   if (raise (SIGUSR1) < 0)
  52     {
  53       printf ("second raise failed: %m\n");
  54       exit (1);
  55     }
  56   if (count != 2)
  57     {
  58       printf ("signal handler not called 2 times\n");
  59       exit (1);
  60     }
  61   exit (0);
  62 }