ref: 2863cc46c5cbb5fee63555f77f10d648bc4f085c
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;
}