From: Robert Klemme <shortcutter@...>
Date: 2007-04-05T17:20:06+09:00
Subject: Re: Forking and copying variables

On 05.04.2007 06:03, Brandon Casci wrote:
> I have a script that sets a few variables and then forks. Each fork
> executes the script from top to bottom. Is there any way for the forks
> to get a copy of all the variables set before the fork, because each
> fork thinks it;s running for the first time (and ya I see why because a
> fork is a copy of the current process)?
> 
> Maybe forking isn't what I'm looking for, but the performance is so much
> better than threading for this task.

Use the block form of fork, that will preserve all state:

10:14:12 [~]: ruby -e 'p $$; foo=1; 2.times do fork do
while foo < 10
print $$, ":", foo, "\n"
foo+=1
end
end end'
3840
3468:1
3468:2
3468:3
3468:4
3468:5
3468:6
3468:7
3468:8
3468:9
10:14:42 [~]: 3600:1
3600:2
3600:3
3600:4
3600:5
3600:6
3600:7
3600:8
3600:9

10:14:54 [~]:

Kind regards

	robert