blob: b73720deb99bfc7dc652bc5db3db9e23d20fe427 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* Copyright (C) 2003-2021 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
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <error.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
volatile int count;
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: %m\n");
exit (1);
}
if (raise (SIGUSR1) < 0)
{
printf ("first raise failed: %m\n");
exit (1);
}
if (raise (SIGUSR1) < 0)
{
printf ("second raise failed: %m\n");
exit (1);
}
if (count != 2)
{
printf ("signal handler not called 2 times\n");
exit (1);
}
exit (0);
}
|
