[issue19302] Add support for AIX pollset efficient event I/O polling

[Charles-François Natali]

Charles-François Natali added the comment:

> Other parts of your reasoning are somewhat circular because most of the problems on AIX are Linux-isms (or BSD-isms where BSD has not yielded to Linux behavior). So you argue against adding lots of AIX-specific code, yet fixing some of the tests more generally will require adding lots of AIX-specific code.

It shouldn't require a lot of AIX-specific code, as long as AIX is
POSIX-compliant.
If some tests are failing because on Linux-isms assumptions - either
in the stdlib, or in the tests - as I said, we'll be happy to fix
them: just open relevant issues.

Once again, this issue is not about whether or not we want to support
AIX (I'm personally happy to have as many Unices supported as
possible), but rather whether or not we want to add large chunks of
OS-specific code, whereas the currently generic POSIX primitives -
such as select() and poll() - work on all POSIX-compliant platforms.
Adding platform-specific code has a cost, and IMO, the cost isn't
worth it for AIX.

I can understand that your point of view differs, either because of
your job or personal interest, that's why I'd like to know if there's
a consensus, or semi-official policy among the CPython project.

Feel free to bring this up on the python-dev mailing list!

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19302>
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