[linux-audio-dev] jack_callback <-> rest of the world

[Alfons Adriaensen]

On Wed, Nov 02, 2005 at 12:38:49PM +0100, St?phane Letz wrote:

> Yes, clients use open *once* when the new client opens. This is done  
> in a non RT thread (what we call the "notification" thread that also  
> handle all non RT events like callback...)
> 
> >This means that changing the graph order can never be a RT operation,
> >unless clients get a second, non-RT thread to perform this call from.
> 
> There is no need to open the synchronization primitive at graph re- 
> order time. Since a given client can access all synchronization  
> primitive, when the graph order changes, then the client will  
> possibly have to notify another primitive.

So if there are N clients, each of them needs N file descriptors open
all the time. System wide the complexity grows as N^2. Not really a
good way to tackle an O(N) problem IMHO.

-- 
FA