[Patches] GC infrastructure patch 2 (type changes)

[Moshe Zadka]

On Wed, 14 Jun 2000, Neil Schemenauer wrote:

> This patch modifies the type structures of objects that
> participate in GC.  The object's tp_basicsize is increased when
> GC is enabled.  GC information is prefixed to the object to
> maintain binary compatibility.  GC objects also define the
> tp_flag Py_TPFLAGS_GC.

a) See my other a)

b) in 

+ /* Objects which participate in garbage collection (see objimp.h) */
+ #ifdef WITH_CYCLE_GC
+ #define Py_TPFLAGS_GC (1L<<2)
+ #else
+ #define Py_TPFLAGS_GC 0
+ #endif

What's wrong with defining Py_TPFLAGS_GC unconditionally?

c) You seem to be adding GC information to an awful lot of objects.
How much of this can be thrown out without affecting GC greatly?

Cool, anyway!
--
Moshe Zadka <moshez@math.huji.ac.il>
http://www.oreilly.com/news/prescod_0300.html
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