[ANNOUNCE] Garbage collection for Python

[Florian Weimer]

Bjorn Pettersen <bjorn at roguewave.com> writes:

> Windows have system calls for atomic increment/decrement
> (InterlockedIncrement/InterlockedExchangeAdd), something that is sorely
> lacking from Unix (*sigh*)

A system call is much too slow for that purpose.  If you've got
hardware support, you can use it, otherwise, it becomes quite
expensive.