[Numpy-discussion] Handling interrupts in NumPy extensions

[David M. Cooke]

On Aug 24, 2006, at 18:38 , Travis Oliphant wrote:

>
> You can already use the approach suggested:
>
> if (PyOS_InterruptOccurred()) goto error
>
> to handle interrupts.  The drawback of this approach is that the loop
> executes more slowly because a check for the interrupt occurs many  
> times
> in the loop which costs time.
>
> The advantage is that it may work with threads (I'm not clear on  
> whether
> or not PyOS_InterruptOccurred can be called without the GIL, though).

It should be; it's pure C code:

int
PyOS_InterruptOccurred(void)
{
         if (!interrupted)
                 return 0;
         interrupted = 0;
         return 1;
}

(where interrupted is a static int).

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|David M. Cooke              http://arbutus.physics.mcmaster.ca/dmc/
|cookedm at physics.mcmaster.ca