Re: [boost] A fast-pathed rw-mutex algorithm for Boost...

From: Howard Hinnant (hinnant_at_[hidden])
Date: 2006-10-26 21:57:57

On Oct 26, 2006, at 9:52 PM, Peter Dimov wrote:

> Thanks, I'll try this tomorrow. Later today, I mean.

I'm an old man.  I can't deal with your hours. :-)

> BTW... why do you count the upgradable among the readers? It seems  
> a bit
> simpler not to include it in the reader count; it already has a bit  
> all for
> itself.

I found it simpler to include the upgradable in the reader count.  It  
has been a year or two since I made that decision so, you know, times  
change, sometimes we get smarter (sometimes not).  At the time: an  
upgradable lock is a reader.  It doesn't become a writer until  
someone asks it to, at which time it decrements the reader count and  
waits at gate 2.  YMMV.

-Howard