On 2006-03-16 hselasky@c2i.net wrote: > If I want to aquire a mutex from: > > 1) Interrupt handler > 2) Callout (timeout) > > How do I do that? Do I have to use a soft interrupt handler? No, you just need to use the right spl calls to block the hard interrupt in the callout (placed outside the lock). Matthew Orgass darkstar@city-net.com