ref: 7fcc6aed753e23ccaf93a69020ac82e5acde36e5
dir: /sys/src/cmd/python/Python/sigcheck.c/
/* Sigcheck is similar to intrcheck() but sets an exception when an
interrupt occurs. It can't be in the intrcheck.c file since that
file (and the whole directory it is in) doesn't know about objects
or exceptions. It can't be in errors.c because it can be
overridden (at link time) by a more powerful version implemented in
signalmodule.c. */
#include "Python.h"
/* ARGSUSED */
int
PyErr_CheckSignals(void)
{
if (!PyOS_InterruptOccurred())
return 0;
PyErr_SetNone(PyExc_KeyboardInterrupt);
return -1;
}