From: Ezra Zygmuntowicz <ezmobius@...>
Date: 2006-09-25T06:39:52+09:00
Subject: Re: [ANN] slave-0.2.0


On Sep 24, 2006, at 8:57 AM, ara.t.howard@noaa.gov wrote:

> On Sun, 24 Sep 2006, Ezra Zygmuntowicz wrote:
>
>> 	This is a great library Ara, I am writing a library that wraps up  
>> the
>> 	slave lib into another interface for controlling jobs with timers  
>> and
>> 	a few other things. So the master process holds a thread pool with
>> 	references to slave classes in it so that you can set a limit on the
>> 	number of running slaves. Using it to offload jobs from a rails  
>> app to
>> 	not hold up the http flow. I have a question though. What would  
>> be the
>> 	cleanest way to have a slave class signal that it is finished  
>> working
>> 	and needs to be kill'ed. I know there is the shutdown method that  
>> you
>> 	could call from the master process to shutdown a slave. But is there
>> 	something similar that can be called from a slave process? Or  
>> should I
>> 	just let the slave process exit! and let the heartbeat cleanup after
>> 	the dead slaves?
>
> hmmm.  good question.  i could add a feature where at_exit handlers  
> could be
> added, somthing like
>
>
>   s = Slave.new( :at_exit => lambda{}){ do_child_stuff }
>
>
> would that be sufficient?
>
> -a


Ara-

	Yeah that would work fine I think. So that would call the lambda  
when the child process calls exit! ? Is there any way for a slave to  
call back to the parent process? Or is there a way to get the drb uri  
of the parent from the child?

	Thanks for slave and all your other codeforpeople ;) I have learned  
a lot by reading through your code and by googling "cat a.rb"  ;)


Cheers-
-Ezra