Author kristjan.jonsson
Recipients Jim.Jewett, amaury.forgeotdarc, asvetlov, dstanek, kristjan.jonsson, loewis, pitrou, rhettinger, stutzbach, tim.peters
Date 2012-04-17.10:37:59
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Message-id <1334659080.54.0.88058540041.issue9141@psf.upfronthosting.co.za>
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I _think_ the only python related things you can do from tp_clear() is Py_DECREF(), this is what I mean by trivial.  This is the reason, for example, that special care was done with generators.
An IO object could of course do non-python operations such as closing files and freeing buffers.

If file.close() can be an arbitrary python method, then it can no more be called from gc, than an object's __del__ method.  This would not be a regression, this would be a fact of life.

The point of _this_ defect (issue 9141) is to allow objects to be smarter about this, being able to tell gc if their finalizers are trivial or not.


I will start a discussion on python-dev to see if anyone knows exactly why these limitations are in place, and what they are.  They are not documented in the source code.
History
Date User Action Args
2012-04-17 10:38:00kristjan.jonssonsetrecipients: + kristjan.jonsson, tim.peters, loewis, rhettinger, amaury.forgeotdarc, pitrou, dstanek, stutzbach, asvetlov, Jim.Jewett
2012-04-17 10:38:00kristjan.jonssonsetmessageid: <1334659080.54.0.88058540041.issue9141@psf.upfronthosting.co.za>
2012-04-17 10:37:59kristjan.jonssonlinkissue9141 messages
2012-04-17 10:37:59kristjan.jonssoncreate