/* Copyright (C) 2003 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Jakub Jelinek <jakub@redhat.com>, 2003. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ #include <errno.h> #include <string.h> #include <error.h> #include <signal.h> #include <stdlib.h> #include <stdio.h> volatile int count; static void sh (int sig) { ++count; } int main (void) { struct sigaction sa; sa.sa_handler = sh; sigemptyset (&sa.sa_mask); sa.sa_flags = 0; if (sigaction (SIGUSR1, &sa, NULL) < 0) { printf ("sigaction failed: %s\n", strerror(errno)); exit (1); } if (raise (SIGUSR1) < 0) { printf ("first raise failed: %s\n", strerror(errno)); exit (1); } if (raise (SIGUSR1) < 0) { printf ("second raise failed: %s\n", strerror(errno)); exit (1); } if (count != 2) { printf ("signal handler not called 2 times\n"); exit (1); } exit (0); }