Re: threading question

["J . A . Magallon" <jamagallon@able.es>]

On 20010613 Kurt Garloff wrote:
> 
> What I do in my numerics code to avoid this problem, is to create all the
> threads (as many as there are CPUs) on program startup and have then wait
> (block) for a condition. As soon as there's something to to, variables for
> the thread are setup (protected by a mutex) and the thread gets signalled
> (cond_signal).
> If you're interested in the code, tell me.
> 

I use the reverse approach. you feed work to the threads, I create the threads
and let them ask for work to a master until it says 'done'. When the
master is queried for work, it locks a mutex, decide the next work for
that thread, and unlocks it. I think it gives the lesser contention and
is simpler to manage.

-- 
J.A. Magallon                           #  Let the source be with you...        
mailto:jamagallon@able.es
Linux Mandrake release 8.1 (Cooker) for i586
Linux werewolf 2.4.5-ac13 #1 SMP Sun Jun 10 21:42:28 CEST 2001 i686