142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#if HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <signal.h>
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#include <time.h>
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#include <errno.h>
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#include "intertask_interface.h"
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#include "timer.h"
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#include "backtrace.h"
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#include "assertions.h"
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#include "signals.h"
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#include "common/utils/LOG/log.h"
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#if defined (LOG_D) && defined (LOG_E)
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# define SIG_DEBUG(x, args...) LOG_D(RRC, x, ##args)
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# define SIG_ERROR(x, args...) LOG_E(RRC, x, ##args)
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#endif
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#ifndef SIG_DEBUG
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# define SIG_DEBUG(x, args...) do { fprintf(stdout, "[SIG][D]"x, ##args); } while(0)
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#endif
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#ifndef SIG_ERROR
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# define SIG_ERROR(x, args...) do { fprintf(stdout, "[SIG][E]"x, ##args); } while(0)
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#endif
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static sigset_t set;
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int signal_mask(void)
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{
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/* We set the signal mask to avoid threads other than the main thread
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* to receive the timer signal. Note that threads created will inherit this
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* configuration.
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*/
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sigemptyset(&set);
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sigaddset (&set, SIGTIMER);
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sigaddset (&set, SIGUSR1);
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sigaddset (&set, SIGABRT);
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sigaddset (&set, SIGSEGV);
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sigaddset (&set, SIGINT);
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if (sigprocmask(SIG_BLOCK, &set, NULL) < 0) {
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perror ("sigprocmask");
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return -1;
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}
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return 0;
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}
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int signal_handle(int *end)
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{
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int ret;
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siginfo_t info;
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sigemptyset(&set);
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sigaddset (&set, SIGTIMER);
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sigaddset (&set, SIGUSR1);
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sigaddset (&set, SIGABRT);
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sigaddset (&set, SIGSEGV);
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sigaddset (&set, SIGINT);
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if (sigprocmask(SIG_BLOCK, &set, NULL) < 0) {
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perror ("sigprocmask");
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return -1;
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}
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/* Block till a signal is received.
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* NOTE: The signals defined by set are required to be blocked at the time
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* of the call to sigwait() otherwise sigwait() is not successful.
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*/
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if ((ret = sigwaitinfo(&set, &info)) == -1) {
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perror ("sigwait");
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return ret;
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}
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//printf("Received signal %d\n", info.si_signo);
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/* Real-time signals are non constant and are therefore not suitable for
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* use in switch.
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*/
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if (info.si_signo == SIGTIMER) {
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timer_handle_signal(&info);
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} else {
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/* Dispatch the signal to sub-handlers */
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switch(info.si_signo) {
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case SIGUSR1:
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SIG_DEBUG("Received SIGUSR1\n");
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*end = 1;
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break;
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case SIGSEGV: /* Fall through */
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case SIGABRT:
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SIG_DEBUG("Received SIGABORT\n");
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backtrace_handle_signal(&info);
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break;
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case SIGINT:
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printf("Received SIGINT\n");
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itti_send_terminate_message(TASK_UNKNOWN);
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*end = 1;
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break;
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default:
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SIG_ERROR("Received unknown signal %d\n", info.si_signo);
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break;
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}
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}
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return 0;
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}
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