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Diffstat (limited to 'src/sig_handler.c')
-rw-r--r-- | src/sig_handler.c | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/sig_handler.c b/src/sig_handler.c new file mode 100644 index 0000000..68a95cb --- /dev/null +++ b/src/sig_handler.c @@ -0,0 +1,109 @@ +/* + * gstdvbbackend + * + * gstdvbbackend is a small programm which captures a given set of dvb + * channels from one dvb device and provides the streams via minimal http. + * + * + * Copyright (C) 2011 Christian Pointner <equinox@spreadspace.org> + * + * This file is part of gstdvbbackend. + * + * gstdvbbackend 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. + * + * gstdvbbackend 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 gstdvbbackend. 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_create_full(signal_thread_func, loop, 8192, FALSE, TRUE, G_THREAD_PRIORITY_HIGH, NULL); + if(!signal_thread) + return -1; + + return 0; +} + +void signal_stop() +{ + // nothing yet.. +} |