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/*
* espeakup - interface which allows speakup to use espeak
*
* Copyright (C) 2008 William Hubbs
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define STOP_MSG "s"
#include "espeakup.h"
/*
* We install a dummy signal handler to let the o/s know that we
* do not want the default action to be performed since we are
* handling the signal.
*/
static void dummy_handler(int sig)
{
}
void *signal_thread(void *arg)
{
struct sigaction temp;
sigset_t sigset;
int sig;
memset(&temp, 0, sizeof (struct sigaction));
/* install dummy handlers for the signals we want to process */
temp.sa_handler = dummy_handler;
sigemptyset(&temp.sa_mask);
sigaction(SIGINT, &temp, NULL);
sigaction(SIGTERM, &temp, NULL);
pthread_mutex_lock(&queue_guard);
while (should_run) {
pthread_mutex_unlock(&queue_guard);
sigfillset(&sigset);
sigwait(&sigset, &sig);
switch (sig) {
case SIGINT:
case SIGTERM:
pthread_mutex_lock(&queue_guard);
should_run = 0;
pthread_mutex_unlock(&queue_guard);
break;
default:
printf("espeakup caught signal %d\n", sig);
break;
}
}
/* Tell the reader to stop, if it is in a select() call. */
write(PIPE_WRITE_FD, STOP_MSG, strlen(STOP_MSG));
return NULL;
}
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