Re: [boost] [shared_ptr] InterlockedIncrement rocks!

From: Jonathan Wakely (cow_at_[hidden])
Date: 2004-09-22 08:52:59

On Wed, Sep 22, 2004 at 02:34:58PM +0100, Ben Hutchings wrote:

> > > I could make it work on g++ (and hence most Linux 
> > > configurations) by using libstdc++'s atomic primitives?  I 
> > 
> > No.  This is not portable enough.
> > The problem is that libstdc++'s atomic ops come with libstdc++ which
> > precludes you from using other standard library implementations.
> 
> Perhaps I could put #define BOOST_STDLIB_LIBSTDCPP3 in
> <boost/config/stdlib/libstdcpp3.hpp> and then guard any use of
> <bits/atomicity.h> with #ifdef BOOST_STDLIB_LIBSTDCPP3.

That macro would be a good idea anyway, since otherwise detecting
libstdc++-v3 requires:

#if defined(__GLIBCPP__) || defined (__GLIBCXX__)

There are already places that don't detect GCC 3.4's libstdc++ because
they haven't been updated to check for __GLIBCXX__ as well as
__GLIBCPP__. Your suggested macro would make it easier to get right.

jon

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