python signal模块

python signal模块

python signal模块的使用实例。只有在主线程里面才可以调用signal.signal函数，而子线程可以调用signal.alarm函数对信号的状态进行设置。

1. signal处理handler

import signal
...
def sigint1(self, signum, frame):
if self.delete:
print >>sys.stderr, (
'SIGINT received; finishing up and running DELETE.\n'
'Send one more SIGINT to exit *immediately*.')
self.aborted = True
if self.running and not isinstance(self.running, BenchDELETE):
self.running.aborted = True
signal.signal(signal.SIGINT, self.sigint2)
else:
self.sigint2(signum, frame)

def sigint2(self, signum, frame):
sys.exit('Final SIGINT received.')

注册信号处理的handler

signal.signal(signal.SIGINT, self.sigint1)

以上代码取自swift-bench。