[boost] Re: platform specific structures

From: David Abrahams (dave_at_[hidden])
Date: 2004-09-22 05:41:07

Matt Hurd <matt.hurd_at_[hidden]> writes:

>> On Tue, 21 Sep 2004 17:37:03 +0200, Alexander Terekhov <terekhov_at_[hidden]> wrote:
>> 
>> Matt Hurd wrote:
>> First off, atomocity without memory ordering and visibility protocol
>> is pretty useless. 
>
> For many, perhaps most, tasks yes.  However, think of a database
> without locking... it can still be useful with optimistic concurrency
> for some styles of application.  Atomic memory transactions are just a
> guarantee that the "bits" are consistent.  

They typically don't exist for "records" of more than one word, if
I'm not mistaken.  How useful is that for a database?

-- 
Dave Abrahams
Boost Consulting
http://www.boost-consulting.com