29c
Subj : Re: recursive mutexes
To   : comp.programming.threads
From : Uenal Mutlu
Date : Fri May 20 2005 11:24 pm

"David Schwartz" wrote
>
> "David Holmes" wrote
>
> > "David Schwartz" wrote in message
>
> >>     I'm afraid that's not true. A typical recursive unlock will need one
> >> interlocked operation to figure out whether it has to wake other threads
> > or
> >> not followed by waking the threads if necessary.
> >
> > Why would a *recursive* unlock need to wake anyone?
>
>     As I said, assuming it's the last unlock.

Wake not necessary at all (at least in my implementations of both
recursive and non-recursive mutex methods).

.

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