Re: [boost] read_write_mutex fundamentally broken in 1.33?

From: John Maddock (john_at_[hidden])
Date: 2005-09-09 06:44:14

> So, do we yank read_write_mutex from 1.33.1 and, err, start over?

Heaven only knows!

Well, I guess read_write_mutex isn't much use as it is: basically I think it 
tries to be too clever for it's own good.

Ultimately, since there is a rewrite in progress, then yes I think a rewrite 
based upon a proven design *and not deviating from or extending that design* 
would be a good thing.  It's probably the only way to get a provenly correct 
implementation, that can be maintained if necessary by someone other than 
it's original author if necessary.

The trouble is what do we do with 1.33.1?  We could either revert to the 
1.32 version (if that is actually reliable, the current regression tests 
don't show up these problems so we don't really know), or we could yank it 
out of Boost entirely.  I'm leaning towards yanking it out at present, but 
it's a drastic step, and this presupposes that the original authors of the 
class can't temporarily fix things for 1.33.1 (they all look to have either 
gone away or be too busy at present however).

What do other folks think?

John.