Python multiprocessing

Question

I have a "master" process that needs to spawn some child processes.

How can I manage these child processes? (for example, restart if the process is dead)

Thanks!

mikerobi · Accepted Answer · 2010-10-03 17:10:43Z

4

Have a look at celery.

answered Oct 3, 2010 at 17:10

mikerobi

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2 Comments

Jordan Over a year ago

You are a god among men. Thanks for saving me a weekend.

mikerobi Over a year ago

@Jordan, that is the best comment ever posted to Stack Overflow.

Miki Tebeka · Accepted Answer · 2010-10-03 17:13:26Z

If you use the multiprocessing package, every child process has is_alive method you can check. So one option to to hold a list of all running processes and periodically check is_alive and re-spawn dead processes.

If you're on POSIX system, you can also catch SIGCHLD (using signal) and get notified when a child process dies.

jknair · Accepted Answer · 2010-10-03 17:13:51Z

This will help http://docs.python.org/library/multiprocessing.html

edit : a good tutorial http://www.ibm.com/developerworks/aix/library/au-multiprocessing/

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