[Stackless] atomic

Alberto Ganesh Barbati AlbertoBarbati at libero.it
Tue Sep 16 01:56:41 CEST 2008

Richard Tew ha scritto:
> On Mon, Sep 15, 2008 at 5:44 PM, Alberto Ganesh Barbati
> <AlbertoBarbati at libero.it> wrote:
>> By the way, will stackless provide context manager for atomicity to be
>> used in the "with" statement? I mean, wouldn't it be good to be able to
>> write:
>>  with stackless.atomic():
>>    your_code_here()
>> instead of:
>>  t = stackless.getcurrent()
>>  flag = t.set_atomic(True)
>>  try:
>>    your_code_here()
>>  finally:
>>    t.set_atomic(flag)
>> I know it's not difficult for a user to write such a context manager,
>> but it would be nice to have it provided by stackless itself.
> 'stackless' is a C extension module.  This 'atomic' object would have
> to be written in C.  Not many people use the atomic features, as
> indicated by the fact you're the first I have heard of in a long time.
> We would be more than happy to provide a context manager, if you (or
> anyone for that matter) provided patches to add it, given the patches
> were of sufficient quality.

I know that stackless is a C module. Unfortunately I am not well versed
with the python C bindings to write a patch (I mostly use C++ via
Boost.Python), but the manager I'm speaking about is really this simple:

  class atomic:
    def __enter__(self):
      self.flag = getcurrent().set_atomic(True)

    def __exit__(self, exc_type, exc_value, traceback):



More information about the Stackless mailing list