Re: [boost] [threadpool] new version v12

Subject: Re: [boost] [threadpool] new version v12
From: k-oli_at_[hidden]
Date: 2008-11-01 18:36:09

Am Samstag, 1. November 2008 23:03:07 schrieb Anthony Williams:
> k-oli_at_[hidden] writes:
> > Am Samstag, 1. November 2008 19:35:23 schrieb Vicente Botet Escriba:
> >> IMO, the implementation of the fork/join semantics do not need fibers.
> >> The wait/get functions can call to the thread_pool scheduler without
> >> context-switch. Which are the advantages of using fibers over calling
> >> recursively to the scheduler?
> >
> > Please take alook into the example folder of threadpool. You will find
> > two exmaples for recursivly calculate fibonacci. Configure the pool with
> > tp::fibers_disabled and try to calulate fibonacci(3) with two
> > worker-threads. Your application will block forever.
> > Use the option tp::fiber_enabled and you can calculate any fibonacci
> > number without blocking
>
> I haven't looked at Oliver's use of Fibers, but you don't need to use
> fibers to do this. 

The idea behind using fiber inside a threadpool is, that each worker-thread 
executes multiple fibers - fiber would yield its execution if future::get() 
would block (because future is not ready)

Oliver