> Like this:
>
> For every process ID slot {
> if we dont' have a slot yet and the slot is empty {
-> We are preempted
-> Another process gets to this point, locks slot,
marks slot as non-empty
> Acquire lock on the process slot (NOWAIT)
-> Slot is locked by other process; acquire fails
> if acquire was successful {
> Overwrite the slot with our process ID
> we have a slot now
> }
> if acquire failed {
> ERROR; this can't happen
-> Oops, it just did
> }
> }
>
> I think this covers all cases, and it guarantees that we
> can't have a slot that's marked as empty and is locked at the
> same time. That's a good sanity check, IMO.
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Received on Thu Dec 23 17:15:45 2004