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我有一个坏的时间搞清楚为什么程序无限期暂停,即表现出无限循环样行为正确配置signal.setitimer()
def class foo():
'''
...
'''
def __catcher(self, signum, _):
print "TIME OUT EXCEEDED"
# Reset timer
signal.setitimer(signal.ITIMER_REAL, 0.0, _SENDERTMOUT_)
# Do something
for i in range (self.base, self.next_seqno):
'''
...
'''
def start(self):
while something:
'''
Start doing some work
'''
if self.base == self.next_seqno:
old_handler = signal.signal(signal.SIGALRM, self.__catcher)
signal.setitimer(signal.ITIMER_REAL, _SENDERTMOUT_)
'''
Do more work until timer goes off
'''
也许我不知道执行的顺序,当计时器在start()中超时时,程序跳转到__catcher(),对不对?然后定时器被重置,并且其余的语句,然后程序在哪里继续执行?
感谢您的帮助!