Subj : RE: Futexes are wrong! (Are they?)
To   : comp.programming.threads
From : Jomu
Date : Mon Jun 06 2005 12:28 am

Been thinking about former Joe Seigh posts... As consumer-producer
message queues are (for me, probably elsewhere also) most frequent sync
devices, and their problem with preemptive signaling happens mostly
(maybe only) when one thread signals while holding mutex (same one
waiting thread will try to reacquire when signaled) then why don't
rearrange signaling so that it happens after mutex is freed?

That way futexes will behave (at least IMO) naturally - thread waiting
on some condvar will get his chance to run as soon as possible, and it
will do it as fast as possible.

dd

.