python实现的守护进程(Daemon)用法实例_Python

本文实例讲述了python实现的守护进程(Daemon)用法。分享给大家供大家参考。具体如下：

									def createDaemon():

									  "'Funzione che crea un demone per eseguire un determinato programma…"'

									  import os

									  # create - fork 1

									  try:

									    if os.fork() > 0: os._exit(0) # exit father…

									  except OSError, error:

									    print 'fork #1 failed: %d (%s)' % (error.errno, error.strerror)

									    os._exit(1)

									  # it separates the son from the father

									  os.chdir('/')

									  os.setsid()

									  os.umask(0)

									  # create - fork 2

									  try:

									    pid = os.fork()

									    if pid > 0:

									      print 'Daemon PID %d' % pid

									      os._exit(0)

									  except OSError, error:

									    print 'fork #2 failed: %d (%s)' % (error.errno, error.strerror)

									    os._exit(1)

									  funzioneDemo() # function demo

									def funzioneDemo():

									  import time

									  fd = open('/tmp/demone.log', 'w')

									  while True:

									    fd.write(time.ctime()+'\n')

									    fd.flush()

									    time.sleep(2)

									  fd.close()

									if __name__ == '__main__':

									  createDaemon()

希望本文所述对大家的Python程序设计有所帮助。

python实现的守护进程(Daemon)用法实例

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