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Re: (ITS#7363) libmdb should use POSIX semaphores on non-apple BSD systems too.
Howard Chu writes:
> PTHREAD_PROCESS_SHARED is defined just about everywhere, that's not a useful
> test. (You only discover at runtime that the mutex creation/init failed...)
Argh. Oh well, we should only do the namespace cleanup, then. __BSD__
BTW, I think the lock file should contain a field indicating the sync
primitive type, so different compilations of MDB won't use different
sync primitives. Which maybe also means we might as well pick the
primitive at runtime (try PTHREAD_PROCESS_SHARED first, then sem_open).