From: Eric Hodel <drbrain@...7.net>
Date: 2005-01-25T02:19:25+09:00
Subject: Re: nuby threading on threads

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On 24 Jan 2005, at 01:08, Kaspar Schiess wrote:

> (In response to news:20050124005127.F2A9982B3@mx2.delmonte-phil.com by
> Pe=F1a, Botp)
>
>> LIMIT=3D 10
>> tlist =3D []

tlist =3D ThreadGroup.new

>> loop {
>>      if tlist.size< LIMIT
>>         tlist << Thread.new { p "test" }

tlist.add Thread.new { p "test" }

>>      else
>>         sleep 5
>>      end
>> }

ThreadGroups automatically drop Threads that are no longer alive.  Use=20=

tlist.list to get the list of threads currently in the ThreadGroup.

> I'd recommend discarding threads that are dead from the list like =
this:
>
>   tlist.select! { |t| t.alive? }

Threads may die between the time you pick them out and the time you=20
decide to do something with them.  You'll have to check each one in a=20
critical section before doing some work that requires the thread to be=20=

alive, or rescue an exception around the operation.

--=20
Eric Hodel - drbrain@segment7.net - http://segment7.net
FEC2 57F1 D465 EB15 5D6E  7C11 332A 551C 796C 9F04

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