Subj : Re: Challenge: Multithreading & Synchronization
To   : comp.programming.threads
From : David Schwartz
Date : Sat May 21 2005 09:47 am


"Casper H.S. Dik" <Casper.Dik@Sun.COM> wrote in message 
news:428ef2d4$0$64558$e4fe514c@news.xs4all.nl...

> "David Schwartz" <davids@webmaster.com> writes:

>>    A recursive mutex will have to determine that this unlock requires the
>>mutex to actually be released. This cannot easily be done without either 
>>an
>>extra interlocked operation, per-thread data for the mutex, or hiding the
>>costs elsewhere by making the lock operation complex and bizarre.

> All a recursive mutex needs is a counter; it does not need to
> be interlocked as the lock is being held.

    You are correct.

    DS

.