🚀 go-pugleaf

In article <3d15d1c0$1_2@aeinews.>, William A. McKee <wamckee@msn.com>
wrote:

> How do you guarantee mutual exclusion with an Apple API or PowerPlant.  I
> have an ISR that gets called by Open Transport and I don't want collisions
> when accessing the same data when handling the ISR routine.

Under OS X, you can use the POSIX mutex libraries:

% man -k mutex
pthread_mutex_destroy(3) - free resources allocated for a mutex
pthread_mutex_init(3)    - create a mutex
pthread_mutex_lock(3)    - lock a mutex
pthread_mutex_trylock(3) - attempt to lock a mutex without blocking
pthread_mutex_unlock(3)  - unlock a mutex
pthread_mutexattr_init(3), pthread_mutexattr_destroy(3),
pthread_mutexattr_setprioceiling(3),
pthread_mutexattr_getprioceiling(3), pthread_mutexattr_setprotocol(3),
pthread_mutexattr_getprotocol(3), pthread_mutexattr_settype(3),
pthread_mutexattr_gettype(3) - mutex attribute operations

-- 
David M. Palmer  dmpalmer@email.com (formerly @clark.net, @ematic.com)