py.lib: Alarm.py annotate

awgur@13	1 #!/usr/bin/python
awgur@13	2 # -- coding: utf-8 --
awgur@13	3
awgur@13	4 from signal import SIGALRM, alarm, signal
awgur@13	5
awgur@13	6 class AlarmTimeout(Exception): pass
awgur@13	7
awgur@13	8 def _handler(sig, frame):
awgur@13	9 raise AlarmTimeout('Operation timeout')
awgur@13	10
awgur@13	11 class MkAlarm(object):
awgur@13	12 def __init__(self, timeout):
awgur@13	13 signal(SIGALRM, _handler)
awgur@13	14 alarm(timeout)
awgur@13	15
awgur@13	16 def __enter__(self):
awgur@13	17 pass
awgur@13	18
awgur@13	19 def __exit__(self, eType, eObj, tb):
awgur@13	20 if eObj == None:
awgur@13	21 alarm(0)
awgur@13	22
awgur@13	23 def __del__(self):
awgur@13	24 alarm(0)
awgur@13	25

py.lib