/*********************************************************************************
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* Copyright: (C) 2025 LingYun IoT System Studio
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* All rights reserved.
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*
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* Filename: signal.c
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* Description: This file signal() example program.
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*
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* Version: 1.0.0(10/28/2025)
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* Author: Guo Wenxue <guowenxue@gmail.com>
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* ChangeLog: 1, Release initial version on "10/28/2025 03:14:34 PM"
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*
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********************************************************************************/
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#include <stdio.h>
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#include <signal.h>
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#include <unistd.h>
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void sig_handler(int signum)
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{
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switch(signum)
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{
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case SIGINT:
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printf("Received signal %d(Ctrl+C) , you can not kill me now!\n", signum);
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break;
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case SIGTERM:
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printf("Received signal %d(SIGTERM) , you can not kill me too!\n", signum);
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break;
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default:
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break;
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}
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}
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int main(int argc, char **argv)
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{
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// 注册 SIGINT 的处理函数
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if (signal(SIGINT, sig_handler) == SIG_ERR)
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{
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perror("signal error");
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return 1;
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}
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// 注册 SIGTERM 的处理函数
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signal(SIGTERM, sig_handler);
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printf("Press Ctrl+C to trigger SIGINT\n");
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while (1)
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{
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printf("Working...\n");
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sleep(2);
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}
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return 0;
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}
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