[Python-Dev] RE: [Python-checkins] python/dist/src/Objects
typeobject.c, 2.244, 2.245
Armin Rigo
arigo at tunes.org
Fri Oct 24 08:46:06 EDT 2003
Hello Guido,
On Wed, Oct 08, 2003 at 08:45:45PM -0700, Guido van Rossum wrote:
> Py_INCREF(Py_True);
> return Py_True;
>
> takes less time than
>
> return PyBool_FromLong(1);
>
> Maybe a pair of macros Py_return_True and Py_return_False would make
> sense?
Sorry if this was already suggested and hastily rejected, but why do we care
at all about the reference counter of the few heavily-used immortal objects of
CPython?
I guess allowing their counter not to be carefully maintained ventures to the
slippery slopes of bad code. Anyway, my two cents for a (very) slightly
faster and shorter code would be to be allowed never to do Py_INCREF or
Py_DECREF when we know that the object is Py_None, Py_False or Py_True. These
three would have a dummy tp_dealloc that just resets the reference counter to
some large value if it ever reaches zero.
Armin
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