[Python-ideas] Membership of infinite iterators

Antoine Pitrou solipsis at pitrou.net
Thu Nov 2 07:41:58 EDT 2017

On Thu, 2 Nov 2017 13:27:17 +0200
Koos Zevenhoven <k7hoven at gmail.com> wrote:
> ​There's a limit to how cheap the call to PyErr_CheckSignals() can be. As I
> mentioned earlier, even just the fact that it's a C function call​ can be
> too much.
> That's why, in the above, I used a new name PyErr_PROBE_SIGNALS() instead
> of optimizing the existing PyErr_CheckSignals() –– turning
> PyErr_CheckSignals() into a static inline function would change the ABI. I
> also didn't call it PyErr_CHECK_SIGNALS() because the functionality is not
> strictly equivalent to the existing function.

Please.  If you want to replace PyErr_CheckSignals() with something
faster, the first thing to do is to prove that PyErr_CheckSignals()
*is* too expensive.



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