Re: maybe-commit fails unconditionally

Richard Kelsey <[email protected]> Sun, 25 Oct 2009 02:56:53 +0000 (UTC)

Newsgroups	gmane.lisp.scheme.scheme48
Message-ID	<[email protected]>

   Date: Sat, 24 Oct 2009 14:08:39 -0400
   From: Roderic Morris <[email protected]>

   I'm curious though, what's the reason for having maybe-commit set the
   proposal to #f instead of installing an empty one?

Who would commit that proposal?  Installing a proposal
carries the implication that it will be committed in the
near future.  Simple thread-safe operations, such as
enqueue! and dequeue!, make use of the current proposal if
there is one.  Leaving a proposal open for an indeterminate
length of time would lead to very bad performance and all
sorts of odd behavior.
                                    -Richard Kelsey