* Daniel Eischen <[EMAIL PROTECTED]> [071002 19:46] wrote: > On Tue, 2 Oct 2007, Alfred Perlstein wrote: > > >Hi guys, we need critical sections for userland here. > > > >This is basically to avoid a process being switched out while holding > >a user level spinlock. > > Setting the scheduling class to real-time and using SCHED_FIFO > and adjusting the thread priority around the lock doesn't work?
Too heavy weight, we want to basically have this sort of code in userland: /* assume single threaded process for now */ static int is_critical; atomic_mutex_lock(); /* implies ++is_critical */ ...do stuff... atomic_mutex_unlock(); /* implies --is_critical */ We don't want two or more syscalls per lock operation. :) -- - Alfred Perlstein _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
