You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

82 lines
2.2 KiB
C

/*
* Copyright 2013-2020 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE 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 Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
/**
* @file signal_handler.h
* @brief Common signal handling methods for all srsLTE applications.
*/
#ifndef SRSLTE_SIGNAL_HANDLER_H
#define SRSLTE_SIGNAL_HANDLER_H
#include "srslte/common/logger_file.h"
#include "srslte/srslog/sink.h"
#include <signal.h>
#include <stdio.h>
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
#define SRSLTE_TERM_TIMEOUT_S (5)
// static vars required by signal handling
static srslog::sink* log_sink = nullptr;
static srslte::logger_file logger_file;
static bool running = true;
static void srslte_signal_handler(int signal)
{
switch (signal) {
case SIGALRM:
fprintf(stderr, "Couldn't stop after %ds. Forcing exit.\n", SRSLTE_TERM_TIMEOUT_S);
//:TODO: refactor the sighandler, should not depend on log utilities
logger_file.stop();
if (log_sink) {
log_sink->flush();
}
raise(SIGKILL);
default:
// all other registered signals try to stop the app gracefully
if (running) {
running = false;
fprintf(stdout, "Stopping ..\n");
alarm(SRSLTE_TERM_TIMEOUT_S);
} else {
// already waiting for alarm to go off ..
}
break;
}
}
void srslte_register_signal_handler()
{
signal(SIGINT, srslte_signal_handler);
signal(SIGTERM, srslte_signal_handler);
signal(SIGHUP, srslte_signal_handler);
signal(SIGALRM, srslte_signal_handler);
}
#ifdef __cplusplus
}
#endif // __cplusplus
#endif // SRSLTE_SIGNAL_HANDLER_H