> It's the interpreter and thread state itself (pystate.h), for the thread > state, also _PyThreadState_Current. Then there is the GC state, in > particular "generations". There are various caches and counters also. > > > Caches seem like they definitely might be a problem. Would you mind > expanding on this a little? What gets cached and why?
Depends on the Python version what precisely gets cached. Several types preserve a pool of preallocated objects, to speed up allocation. Examples are intobject.c (block_list, free_list), frameobject.c (free_list), listobject.c (free_list), methodobject.c (free_list), float_object.c (block_list, free_list), classobject.c (free_list). Plus there are tons of variables caching string objects. From classobject.c alone: getattrstr, setattrstr, delattrs, docstr, modstr, namestr, initstr, delstr, reprstr, strstr, hashstr, eqstr, cmpstr, getitemstr, setitemstr, delitemstr, lenstr, iterstr, nextstr, getslicestr, setslicestr, delslicestr, __contains__, all arguments to UNARY, UNARY_FB, BINARY, BINARY_INPLACE (e.g. instance_neg, instance_or, instance_ior, then cmp_obj, nonzerostr, indexstr. (admittedly, classobject.c is extreme here). There are probably more classes which I just forgot. Regards, Martin _______________________________________________ Python-Dev mailing list Python-Dev@python.org http://mail.python.org/mailman/listinfo/python-dev Unsubscribe: http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com
