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
|
/* the Music Player Daemon (MPD)
* (c)2003-2006 by Warren Dukes (shank@mercury.chem.pitt.edu
* (c)2004 by mackstann
* This project's homepage is: http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "signal_check.h"
#include <errno.h>
volatile sig_atomic_t __caught_signals[NSIG];
static void __signal_handler(int sig)
{
__caught_signals[sig] = 1;
}
static void __set_signal_handler(int sig, void (* handler)(int))
{
struct sigaction act;
act.sa_flags = 0;
act.sa_handler = handler;
while(sigaction(sig, &act, 0) && errno==EINTR);
}
void signal_handle(int sig)
{
__set_signal_handler(sig, __signal_handler);
}
void signal_unhandle(int sig)
{
signal_clear(sig);
__set_signal_handler(sig, SIG_DFL);
}
int signal_is_pending(int sig)
{
return __caught_signals[sig];
}
void signal_clear(int sig)
{
__caught_signals[sig] = 0;
}
|
