linux trap_init

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>

void handle_sigint(int sig) {
    printf("Caught SIGINT, cleaning up and exiting...\n");
    // 执行清理工作
    exit(0);
}

int main() {
    // 设置 SIGINT 信号的处理程序
    signal(SIGINT, handle_sigint);

    printf("Press Ctrl+C to trigger SIGINT...\n");
    while (1) {
        sleep(1);
    }

    return 0;
}

#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>

void handle_sigint(int sig) {
    printf("Caught SIGINT, performing quick cleanup...\n");
    // 快速执行必要的清理工作
    exit(0);
}

int main() {
    struct sigaction sa;
    sa.sa_handler = handle_sigint;
    sigemptyset(&sa.sa_mask);
    sa.sa_flags = 0;

    // 使用 sigaction 设置信号处理程序
    if (sigaction(SIGINT, &sa, NULL) == -1) {
        perror("sigaction");
        exit(1);
    }

    printf("Press Ctrl+C to trigger SIGINT...\n");
    while (1) {
        sleep(1);
    }

    return 0;
}