如何在永久循环中停止等待从套接字接收的greenlet

import greenlet
import socket

def receive_loop(sock):
    while True:
        data = sock.recv(1024)
        # 处理接收到的数据
        # ...

def main():
    sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    # 连接到服务器
    # ...
    
    # 创建greenlet对象
    recv_greenlet = greenlet.greenlet(receive_loop)
    # 启动greenlet对象
    recv_greenlet.switch(sock)
    
    while True:
        # 执行其他操作
        # ...

def main():
    # ...
    
    while True:
        # 执行其他操作
        
        # 切换到套接字接收的greenlet
        recv_greenlet.switch()

def receive_loop(sock):
    while True:
        data = sock.recv(1024)
        # 处理接收到的数据
        
        # 切换回主循环的greenlet
        greenlet.getcurrent().parent.switch()