Re: [boost] [thread] cache of initialized threads

From: Anthony Williams (anthony_w.geo_at_[hidden])
Date: 2008-05-08 11:51:59

"vicente.botet" <vicente.botet_at_[hidden]> writes:

>> If this isn't for worker threads in a thread pool, what is the purpose?
>>
>
> Imagine I have in my code a lot of threads that are created/destroyed 
> dynamicaly. For performances purposes I decide to creates this threads using 
> a thread factory which caches some idle threads instead of destroying them. 
> Whay I want is to preserv as much as possible the interface, so the result 
> of the thread factory must conform as much as possible to the thread 
> interface. Note that may initial application had not the notion of thread 
> group.
>
> The thread_pool I have used so far calls the function asynchronously, 
> because the function will be stored on the queue of pending. With a thread 
> cache either the threre is a cached_thread in the pool and we use it to 
> launch the user function, either the chached_threader will crate a new one.

OK. That makes sense.

> In addition a cached thread should behaves as much as possible as a thread. 
> A thread_pool is much more a multi_task scheduler than a thread factory.
>
> Maybe a thread_pool with the needed policies can give the same result. Why 
> not?
>     . Task type : provide the thread functionality
>     . Scheduling Policy : immediate (Synchronous)
>     . Size Policy creates a new one when no more available
>
> Do you know a thread_pool library allowing to implement the required 
> behaviour?

No, sorry.

Anthony
-- 
Anthony Williams            | Just Software Solutions Ltd
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