[Bordeaux-threads-devel] Lispworks additions to Bordeaux - where to submit?
Matt Lamari
matthew.lamari at gmail.com
Sun Jun 1 05:01:18 UTC 2008
I have a lispworks.lisp for bordeaux in which I've added a few entries
to bring it more into line with sbcl and cmucl's capabilities
Most notable is condition variable support. Lispworks doesn't appear to
support the same conditionals per se (probably why it wasn't trivially
added to bordeaux) but its Lispworks wait seems to poll some predicate
at some interval - I emulated conditions out of these.
The condition variable basically stores a hashtable (containing only
unnotified waiters known to be waiting) and a t-list for supporting
queue ordering. Notification notifies only a SINGLE ELEMENT, as the
docs claimed was desirable. I've included checks for some plausible
cases where a process could leave the wait for reasons other than
receiving the notification; but to ensure that an eligible waiter
receives the next notification when it arrives. Unwind-protection
ensures that the registered waiter is removed from the data structure,
and that any unseen notification is passed on to the next waiter.
Please let me know if this sounds to be on the right track, and how/to
whom I should submit the change.
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