Re: [Jack-Devel] jconvolver and OSX

On Mon, Feb 28, 2011 at 01:30:22PM -0500, Paul Davis wrote:

> On Mon, Feb 28, 2011 at 12:54 PM, Fons Adriaensen <[hidden]> wrote:
> > On Mon, Feb 28, 2011 at 11:19:22AM -0500, Paul Davis wrote:
> >
> >> the solution to this issue (or at least, a solution) has already been
> >> posted by torben, from ardour3's code.
> >
> > Not a complete solution as you need sem_init() also to reset
> > existing semaphores. It may work if you're lucky.
> 
> why do you ever need to reset them?

Because the internal state of the convolver is as long as
the longest IR that was configured, and therefore it has
has start/stop/reset functions. This allows you to process
a number of buffers without having to flush the complete
state first (useful in non-RT mode). There is also cleanup(),
which returns the object to its pristine state as after
calling the constructor.

Both reset() and cleanup() reset the semaphores.

Now if you stopped cleanly, which means waiting until all
threads have finished (there's a function to test for this),
the semas will be at zero count anyway, so things should work
even without sem_init(). It's there to be sure.

Ciao,

-- 
FA

1298919154.15309_0.ltw:2,a <20110228185221.GA17707 at linuxaudio dot org>