python中实现守护进程的实例
June 26, 2015
python中实现守护进程的实例是如何来实现的呢?下面的内容将会通过具体的实例来演示python中实现守护进程的实例的实现方法及相关技巧:
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()
python中实现守护进程的实例就是这样,欢迎大家参考。。。。
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