how about dict.setdefault or dict.popitem as a quick hack? unless you are trying to get rid of gil, in which case, sorry I missed your point
On 15 March 2011 09:04, Timothy Baldridge <tbaldri...@gmail.com> wrote: >> Will anything written here: >> http://codespeak.net/pypy/dist/pypy/doc/stackless.html >> be of any use to you? Note, this documentation isquite old and needs >> attention, and right now the stackless transform does not work with the JIT. >> changing things so that it would work doesn't seem to be that much work, >> though, we just haven't gotten around to it. > > > Not really. What I need are CAS operations so I can do the following: > > while(True): > oldval = var > newval = oldval + 1 > if cas(oldval, newval, var): > break > > Basically cas takes the value you think var currently has, the value > you want var to be, and the var. Cas then updates var if and only if > var's current value == oldvar. But cas is atomic. So basically it > returns false if the cas failed, and true if it worked. Using cas you > can build mutexes, shared objects, etc. > > http://en.wikipedia.org/wiki/Compare-and-swap > > Timothy > _______________________________________________ > pypy-dev@codespeak.net > http://codespeak.net/mailman/listinfo/pypy-dev > _______________________________________________ pypy-dev@codespeak.net http://codespeak.net/mailman/listinfo/pypy-dev
