[linux-audio-dev] realtimeness: pthread_cond_signal vs. pipe write

[jaromil]

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On Tue, Jul 11, 2006 at 05:10:27PM -0400, Paul Davis wrote:
> On Tue, 2006-07-11 at 17:06 -0400, Dave Robillard wrote:
> > Semaphores seem about perfect for this to me.. am I missing something?
> > Why doesn't anyone ever recommend them?
> 
> i think mostly because in 2000-2001, they were very slow.

IMHO they are still slow, especially when you port software to OSX then
pthreads and semaphores are *very* slow (well, it depends how much and
where you use them of course).

my solution so far is assuming that boolean is atomical.
all multi threaded handling i wrote is based on this assumption: i use
it in pipe and linklist classes, but semaphores could also be there.

i found no probems and good speed so far
... and life is boring without risks :))

ciao

- -- 
 jaromil,  dyne.org rasta coder,  http://rastasoft.org

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