时间:2022-09-04 10:47:52 | 栏目:Python代码 | 点击:次
如下所示:
# coding=utf-8 import signal import time def set_timeout(num, callback): def wrap(func): def handle(signum, frame): # 收到信号 SIGALRM 后的回调函数,第一个参数是信号的数字,第二个参数是the interrupted stack frame. raise RuntimeError def to_do(*args, **kwargs): try: signal.signal(signal.SIGALRM, handle) # 设置信号和回调函数 signal.alarm(num) # 设置 num 秒的闹钟 print 'start alarm signal.' r = func(*args, **kwargs) print 'close alarm signal.' signal.alarm(0) # 关闭闹钟 return r except RuntimeError as e: callback() return to_do return wrap if __name__ == '__main__': def after_timeout(): # 超时后的处理函数 print "do something after timeout." @set_timeout(2, after_timeout) # 限时 2 秒 def connect(): # 要执行的函数 time.sleep(1) # 函数执行时间,写大于2的值,可测试超时 return 'connect success.' print connect()