... but I'm curious. Hi Guido, while working on Psyco, I stumbled over a log entry in modsupport.h:
19-Aug-2002 GvR 1012 Changes to string object struct for interning changes, saving 3 bytes.
The change to stringobject was this (rev. 28308): Before:
typedef struct { PyObject_VAR_HEAD long ob_shash; PyObject *ob_sinterned; char ob_sval[1]; } PyStringObject;
After:
typedef struct { PyObject_VAR_HEAD long ob_shash; int ob_sstate; char ob_sval[1]; } PyStringObject;
Now, the internals are very clear to me. What I don't understand is where the three saved bytes should be. Thinking of the time where this change was made, I cannot imagine that this comment was about the size diff between pointer and int, and if this was meant, I still don't get how this could save three bytes? With unaligned ob_sval, structure packing and ob_sstate being unsigned char one could save 3 bytes, but we don't do that. Well, as said, this is no important question. I am just asking myself what I don't see here, or if the comment is just sub-optimal :-) all the best -- chris p.s.: won't make it to PyCon this time, see you soon at the piggies -- Christian Tismer :^) <mailto:tismer@stackless.com> tismerysoft GmbH : Have a break! Take a ride on Python's Johannes-Niemeyer-Weg 9A : *Starship* http://starship.python.net/ 14109 Berlin : PGP key -> http://wwwkeys.pgp.net/ work +49 30 802 86 56 mobile +49 173 24 18 776 fax +49 30 80 90 57 05 PGP 0x57F3BF04 9064 F4E1 D754 C2FF 1619 305B C09C 5A3B 57F3 BF04 whom do you want to sponsor today? http://www.stackless.com/