61 lines
1.4 KiB
C
61 lines
1.4 KiB
C
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/* Copyright (C) 2003-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <error.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <stdio.h>
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volatile int count;
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void
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sh (int sig)
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{
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++count;
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}
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int
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main (void)
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{
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struct sigaction sa;
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sa.sa_handler = sh;
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sigemptyset (&sa.sa_mask);
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sa.sa_flags = 0;
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if (sigaction (SIGUSR1, &sa, NULL) < 0)
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{
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printf ("sigaction failed: %m\n");
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exit (1);
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}
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if (raise (SIGUSR1) < 0)
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{
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printf ("first raise failed: %m\n");
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exit (1);
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}
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if (raise (SIGUSR1) < 0)
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{
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printf ("second raise failed: %m\n");
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exit (1);
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}
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if (count != 2)
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{
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printf ("signal handler not called 2 times\n");
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exit (1);
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}
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exit (0);
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}
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