import time
import os

def light_task():
    """轻量级任务"""
    count = 0
    while True:
        # 简单的计数和休眠
        count += 1
        print(f"运行次数: {count}, PID: {os.getpid()}")
        time.sleep(2)  # 每2秒执行一次

if __name__ == "__main__":
    print(f"程序启动，PID: {os.getpid()}")
    try:
        light_task()
    except KeyboardInterrupt:
        print("程序已停止")