BARRIER-UNLOCK question.

Hi,

The description of MP:BARRIER-UNLOCK is the following (and this function
seems the most important one in the BARRIER API.  I have a few questions
about it.

"barrier-unblock Function Summary

Unblocks a barrier.
Package

mp
Signature

barrier-unblock barrier &key disable reset-count kill-waiting
Arguments

barrier⇩
A barrier.
disable⇩
A boolean.
reset-count⇩
A positive fixnum, t or nil.
kill-waiting⇩
A boolean.
Description

The function barrier-unblock unblocks the barrier barrier, potentially
disabling it, resetting its count or killing the waiting processes.

Without keyword arguments, barrier-unblock unblocks barrier, which means
that any thread that is waiting on barrier wakes and returns from
barrier-wait, and its arriver count is reset to 0.

If disable is true, or if disable is not passed and barrier was made with
disable-on-unblock true, then barrier-unblock also disables barrier, so any
further calls to barrier-wait return nil immediately.

If reset-count is non-nil, it must be valid count (a positive fixnum or t),
and barrier-unblock sets the count of barrier to this value.

If kill-waiting is true, instead of waking up the waiting threads,
barrier-unblock kills them (by process-terminate)."


What would a call like

(mp:barrier-unlock b :reset-count 42)

do, when the (barrier-count b) ==> 666?

Does the description of mp:barrier-change-count apply here?

Also, are there some other supplied keyword combinations that I should be
aware of?

Thanks

Marco


-- 
Marco Antoniotti