如何识别运行main（）的进程，并在signal_handler运行之前终止该进程？

import signal
import sys
import logging
import time
import os
def main():
    print("Main function execution")
    print("Waiting")
    signal.signal(signal.SIGHUP, signal_handler)
    time.sleep(10)
    #How to stop process before signal handler is called?   
def signal_handler(sig, frame):
    logging.basicConfig(filename="DelFIle.log", format='%(asctime)s %(message)s',filemode='w')
    logging.warning(os.getcwd()+"/Del_folder")
    os.remove(os.path.join(os.getcwd(),"/Del_folder/index.txt"))
def Function2():
common resource for main and signal_handler
if __name__=="__main__":
    main()

由于主函数可能包含信号处理程序也可能正在使用的资源，因此由于公共资源处理，我收到了输入/输出错误