On Wed, 2 Nov 2005 11:05:34 +0100 Stéphane Letz <[EMAIL PROTECTED]> wrote:
> In Jackdmp we have tested 2 system for inter-process synchronization: > fifo (the way it was done in regular jackd) and POSIX named semaphore > (which are built on top of futex on recent system version) > > In both cases, each already running client get access to the > synchronization primitive (fifo or POSIX named sema) defined by a new > coming client. The synchronization primitive is "opened" once when a > new client appears and is "closed" when the client quits. The > synchronization primitive that has to be signaled then depends of the > graph topology. > > > But ISTR that OSX only has named shared futexes (i.e. accessed > > via a file descriptor), and then of course the problem remains. > > On OSX, on can use Mach semaphore (internal and non portable...) > POSIX named semaphore or fifo. > > Stephane What results did you get? Did the semaphore perform better/worse than the fifo? What about pthread condition variables with pshared flag set? I read somewhere it should be implemented by now (at least on 2.6 systems). Flo -- Palimm Palimm! http://tapas.affenbande.org
