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81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
/**
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* Copyright 2013-2021 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsRAN is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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/**
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* @file signal_handler.h
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* @brief Common signal handling methods for all srsRAN applications.
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*/
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#ifndef SRSRAN_SIGNAL_HANDLER_H
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#define SRSRAN_SIGNAL_HANDLER_H
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#include "srsran/srslog/sink.h"
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#include "srsran/srslog/srslog.h"
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#include <signal.h>
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#include <stdio.h>
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#ifdef __cplusplus
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extern "C" {
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#endif // __cplusplus
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#define SRSRAN_TERM_TIMEOUT_S (5)
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// static vars required by signal handling
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static srslog::sink* log_sink = nullptr;
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static std::atomic<bool> running = {true};
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static void srsran_signal_handler(int signal)
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{
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switch (signal) {
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case SIGALRM:
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fprintf(stderr, "Couldn't stop after %ds. Forcing exit.\n", SRSRAN_TERM_TIMEOUT_S);
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srslog::flush();
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//:TODO: refactor the sighandler, should not depend on log utilities
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if (log_sink) {
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log_sink->flush();
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}
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raise(SIGKILL);
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default:
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// all other registered signals try to stop the app gracefully
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if (running) {
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running = false;
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fprintf(stdout, "Stopping ..\n");
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alarm(SRSRAN_TERM_TIMEOUT_S);
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} else {
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// already waiting for alarm to go off ..
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}
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break;
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}
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}
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void srsran_register_signal_handler()
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{
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signal(SIGINT, srsran_signal_handler);
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signal(SIGTERM, srsran_signal_handler);
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signal(SIGHUP, srsran_signal_handler);
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signal(SIGALRM, srsran_signal_handler);
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}
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#ifdef __cplusplus
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}
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#endif // __cplusplus
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#endif // SRSRAN_SIGNAL_HANDLER_H
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