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
|
/* sig_block.c - Block and unblock signals
* Copyright (C) 2001,2005 Bruce Guenter <bruce@untroubled.org>
*
* This 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.
*
* This 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <signal.h>
#include "sig.h"
#include "sysdeps.h"
void sig_block(int s)
{
#ifdef HASSIGPROCMASK
sigset_t set;
sigemptyset(&set);
sigaddset(&set, s);
sigprocmask(SIG_BLOCK, &set, 0);
#else
sigblock(1 << (s - 1));
#endif
}
void sig_unblock(int s)
{
#ifdef HASSIGPROCMASK
sigset_t set;
sigemptyset(&set);
sigaddset(&set, s);
sigprocmask(SIG_UNBLOCK, &set, 0);
#else
sigsetmask(sigsetmask(~0) & ~(1 << (s - 1)));
#endif
}
|
