[Python-Dev] doc for new restricted execution design for Python (original) (raw)
Nick Coghlan ncoghlan at gmail.com
Sat Jun 24 11:46:22 CEST 2006
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Brett Cannon wrote:
Yep. That API will be used directly in the changes to pymalloc and PyMem*() macros (or at least the basic idea). It is not only for extension modules but for the core as well.
Existing extension modules and existing C code in the Python interpreter have no idea of any PyXXX calls, so I don't understand how new API functions help here.
The calls get added to pymalloc and PyMem*() under the hood, so that existing extension modules use the memory check automatically without a change. The calls are just there in case some one has some random need to do their own malloc but still want to participate in the cap. Plus it helped me think everything through by giving everything I would need to change internally an API.
This confused me a bit, too. It might help if you annotated each of the new API's with who the expected callers were:
- trusted interpreter
- untrusted interpreter
- embedding application
- extension module
Cheers, Nick.
-- Nick Coghlan | ncoghlan at gmail.com | Brisbane, Australia
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