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miraclecast/demo/sigint.c

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/*
* MiracleCast - Wifi-Display/Miracast Implementation
*
* Copyright (c) 2013-2014 David Herrmann <dh.herrmann@gmail.com>
*
* MiracleCast 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.
*
* MiracleCast 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 MiracleCast; If not, see <http://www.gnu.org/licenses/>.
*/
#include <sys/signalfd.h>
#include "sigint.h"
typedef struct _SigintDelegate SigintDelegate;
struct _SigintDelegate
{
SigintHandler handler;
gpointer user_data;
};
static gboolean sigint_on_signal(GIOChannel *c, GIOCondition e, gpointer d)
{
struct signalfd_siginfo siginfo;
g_io_channel_read_chars(c, (gchar *) &siginfo, sizeof(siginfo), NULL, NULL);
SigintDelegate *delegate = d;
(*delegate->handler)(delegate->user_data);
return FALSE;
}
void sigint_add_watch(SigintHandler handler, gpointer user_data)
{
sigset_t mask;
sigemptyset(&mask);
sigaddset(&mask, SIGINT);
sigprocmask(SIG_BLOCK, &mask, NULL);
SigintDelegate *d = g_malloc(sizeof(SigintDelegate));
*d = (SigintDelegate) {
handler = handler,
user_data = user_data
};
int fd = signalfd(-1, &mask, SFD_CLOEXEC);
GIOChannel *c = g_io_channel_unix_new(fd);
g_io_add_watch_full(c,
G_PRIORITY_DEFAULT,
G_IO_IN | G_IO_ERR | G_IO_HUP,
sigint_on_signal,
d,
g_free);
g_io_channel_set_encoding(c, NULL, NULL);
/*g_io_channel_unref(c);*/
}