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/*
* sydra
*
* sydra is a toolbox which allows you to set up multiple bidirectional
* Video/Audio streams from external locations.
* sydra has been written to be used for the Elevate Festival in Graz
* Austria in order to involve external locations to present themselves
* at the festival.
* Sydra is based on GStreamer and is written in C.
*
*
* Copyright (C) 2014 Christian Pointner <equinox@helsinki.at>
*
* This file is part of sydra.
*
* sydra 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 3 of the License, or
* any later version.
*
* sydra 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 sydra. If not, see <http://www.gnu.org/licenses/>.
*/
#include "datatypes.h"
#include "log.h"
#include "sig_handler.h"
#include <glib.h>
#include <errno.h>
static GThread *signal_thread;
void signal_init()
{
sigset_t signal_set;
sigemptyset(&signal_set);
sigaddset(&signal_set, SIGINT);
sigaddset(&signal_set, SIGQUIT);
sigaddset(&signal_set, SIGHUP);
sigaddset(&signal_set, SIGTERM);
sigaddset(&signal_set, SIGUSR1);
sigaddset(&signal_set, SIGUSR2);
pthread_sigmask(SIG_BLOCK, &signal_set, NULL);
}
static gpointer signal_thread_func(gpointer data)
{
GMainLoop *loop = (GMainLoop *)data;
struct timespec timeout;
sigset_t signal_set;
int sig_num;
for(;;) {
sigemptyset(&signal_set);
sigaddset(&signal_set, SIGINT);
sigaddset(&signal_set, SIGQUIT);
sigaddset(&signal_set, SIGHUP);
sigaddset(&signal_set, SIGTERM);
sigaddset(&signal_set, SIGUSR1);
sigaddset(&signal_set, SIGUSR2);
timeout.tv_sec = 1;
timeout.tv_nsec = 0;
sig_num = sigtimedwait(&signal_set, NULL, &timeout);
if(sig_num == -1) {
if(errno != EINTR && errno != EAGAIN) {
log_printf(ERROR, "sigwait failed with error: %d, signal handling will be disabled", errno);
break;
}
} else {
switch(sig_num) {
case SIGTERM:
case SIGINT:
case SIGQUIT: {
log_printf(NOTICE, "signal %d received, exiting", sig_num);
g_main_loop_quit(loop);
break;
}
default: {
log_printf(NOTICE, "signal %d received, ignoring", sig_num);
break;
}
}
}
}
return NULL;
}
int signal_start(GMainLoop *loop)
{
g_assert(!signal_thread);
signal_thread = g_thread_new("sig_handler", signal_thread_func, loop);
if(!signal_thread)
return -1;
return 0;
}
void signal_stop()
{
// nothing yet..
}
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