python实现的守护进程用法实例

　　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：

　　?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 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。