39 lines
756 B
C
39 lines
756 B
C
#define _XOPEN_SOURCE 700
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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 <signal.h>
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void sigint_handler(int signum)
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{
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printf("捕捉到 SIGINT 信号，程序即将退出。\n");
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exit(0);
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}
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int main()
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{
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struct sigaction sa;
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sa.sa_handler = sigint_handler;
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sigemptyset(&sa.sa_mask);
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sigaddset(&sa.sa_mask, SIGINT);
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sigfillset(&sa.sa_mask);
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// sa.sa_flags = 0;
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sa.sa_flags |= SA_RESETHAND; // 重置默认的信号处理行为
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if (sigaction(SIGINT, &sa, NULL) == -1)
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{
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perror("sigaction");
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exit(1);
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}
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printf("程序运行中，按 Ctrl+C 发送 SIGINT 信号退出。\n");
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while (1)
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{
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// 程序持续执行
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sleep(1);
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}
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return 0;
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}
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