在父进程被终止时杀死子进程

#include<signal.h>
#include <unistd.h>
#include <sys/wait.h>

void sig_handler(int sig) {
    pid_t pid;
    while ((pid = waitpid(-1, NULL, WNOHANG)) > 0) {
        kill(pid, SIGTERM);
    }
    exit(0);
}

int main() {
    signal(SIGTERM, sig_handler);
    pid_t pid = fork();
    if (pid == 0) {
        // 子进程代码
    } else {
        // 父进程代码
    }
    return 0;
}

#include<windows.h>
#include<process.h>

HANDLE hProcess;

void sig_handler(int sig) {
    TerminateProcess(hProcess, 0);
    exit(0);
}

int main() {
    signal(SIGTERM, sig_handler);
    STARTUPINFO si;
    ZeroMemory(&si, sizeof(si));
    si.cb = sizeof(si);
    PROCESS_INFORMATION pi;
    ZeroMemory(&pi, sizeof(pi));
    CreateProcess("child.exe", NULL, NULL, NULL, FALSE, 0, NULL, NULL, &si, &pi);
    hProcess = pi.hProcess;
    // 父进程代码
    return 0;
}