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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* (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>
#include <stddef.h>
static 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;
sigemptyset(&act.sa_mask);
act.sa_handler = handler;
while (sigaction(sig, &act, NULL) && 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;
}
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