| Allegro CL version 8.2 New since 8.2 release. |
Arguments: barrier &key timeout callback pass-through discount-on-abort discount-on-timeout disable-on-unblock
The method when barrier is a barrier
object is as follows.
If the barrier (a barrier
instance) is disabled when this function
is called, then it returns nil
immediately,
and all the other arguments are ignored.
Otherwise, this is an arrival at the barrier. If this arrival is not
the last, then increment the arriver-count and either pass through or
block. If the pass-through argument was
non-nil
, then
return :passed-through
; otherwise block until the
barrier count is reached, or the timeout expires. If the timeout
expires. return :timeout
, otherwise
return t
.
If this arrival is the last, then optionally call
the callback function, unblock the
barrier, and return :unblocked
.
The callback, discount, and disable arguments, override the corresponding slots in the barrier instance.
See Barrier API in smp.htm.
See multiprocessing.htm for general information on multiprocessing in Allegro CL.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page is new in the 8.2 release.
Created 2016.6.21.
| Allegro CL version 8.2 New since 8.2 release. |