Python检查fork()进程是否完成

问题描述

只是想知道是否有人可以帮助我.我遇到的问题是，我os.fork()获取了几条信息并将它们发送到文件中，但是要检查fork过程是否无法正常工作.

Just wondering if some one could help me out. The problem I'm having is that I os.fork() to get several bits of information and send them to a file, but checking to see if the fork process is not working.

import sys
import time
import os
import re


ADDRESS  = argv[1]
sendBytes = argv[2]


proID2 = os.fork()
if proID2 == 0:
    os.system('ping -c 20 ' + ADDRESS + ' > testStuff2.txt')
    os._exit(0)

print proID2

finn = True
while finn == True:
time.sleep(1)
finn = os.path.exists("/proc/" + str(proID2))
print os.path.exists("/proc/" + str(proID2))
print 'eeup out of it ' + str(proID2)

我认为os.path.exists()可能不是正确的选择.

I think that the os.path.exists() is maybe not the right thing to use.

谢谢.

推荐答案

要等待子进程终止，请使用os.waitXXX()函数之一，例如 os.waitpid() .这种方法是可靠的.作为奖励，它将为您提供状态信息.

To wait for the child process to terminate, use one of the os.waitXXX() functions, such as os.waitpid(). This method is reliable; as a bonus, it will give you the status information.

这篇关于Python检查fork()进程是否完成的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！