Author kristjan.jonsson
Recipients amaury.forgeotdarc, dstanek, kristjan.jonsson, loewis, pitrou, rhettinger, stutzbach, tim.peters
Date 2012-04-04.10:56:02
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Message-id <1333536963.09.0.877075927056.issue9141@psf.upfronthosting.co.za>
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I just noticed that PyTypeObjects have a gc slot already:
inquiry tp_is_gc; /* For PyObject_IS_GC */

Now, this is used in only one place in 2.7, for type objects:
return type->tp_flags & Py_TPFLAGS_HEAPTYPE;

This is thus used to dynamically query if an object was allocated with a GC header or not, since static types cannot have this.

Now, it would be perfectly possible to change the semantics of this function to return a bit flag, with bit 0 being the "has head" and bit 1 meaning "is collectable"

This might simplify some stuff.  Any thoughts?
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Date User Action Args
2012-04-04 10:56:03kristjan.jonssonsetrecipients: + kristjan.jonsson, tim.peters, loewis, rhettinger, amaury.forgeotdarc, pitrou, dstanek, stutzbach
2012-04-04 10:56:03kristjan.jonssonsetmessageid: <1333536963.09.0.877075927056.issue9141@psf.upfronthosting.co.za>
2012-04-04 10:56:02kristjan.jonssonlinkissue9141 messages
2012-04-04 10:56:02kristjan.jonssoncreate