Michael D. Crawford wrote:

I have an OS X Mac with CodeWarrior 8.3 and some version of Apple's XCode. Let's see, g++ --version says it's 3.3.

I also have a PowerPC mac running Debian Linux for PowerPC.

It would be nice if you try the latest CVS on the Debian.

Have you looked at the ZRef from ZooLib? It's thread safe, and supports CodeWarrior and g++ on PowerPC. It also supports some other platforms: http://www.zoolib.org/

Let's see if I can find the file you need...

ZAtomic.h http://cvs.sourceforge.net/viewcvs.py/zoolib/zoolib/src/foundation/ZAtomic.h?rev=1.10&view=markup

ZAtomic.cpp http://cvs.sourceforge.net/viewcvs.py/zoolib/zoolib/src/foundation/ZAtomic.c...

Look also in ZRefCount.h and ZRefCount.cpp in

http://cvs.sourceforge.net/viewcvs.py/zoolib/zoolib/src/foundation/

ZooLib has the MIT License.

I think I've seen it, yes. But since most of the code on the web nowadays is GPL, I did my own versions from scratch. I didn't know about the MIT license. Looking at ZAtomic.h, I see that its ZAtomic_DecAndTest does not provide any memory visibility guarantees; no sync or isync anywhere, no memory clobber. Apart from that, it's pretty much the same. There aren't that many ways to code an lwarx/stwcx. loop :-)