Availability:C-language interface function
int PL_handle_signals(void)Handle any signals pending from PL_raise(). PL_handle_signals()
is called at each pass through the call- and redo-port at a safe point.
Exceptions raised by the handler using PL_raise_exception()
are properly passed to the environment.
The user may call this function inside long-running foreign functions
to handle scheduled interrupts. This routine returns the number of
signals handled. If a handler raises an exception, the return value is
-1 and the calling routine should return with FALSE as soon
as possible.