I'm looking for a way to interrupt a long-running function on a key
press, but without halting the function.
E.g. if I have these two functions:
def handler(*args):
print "caught interrupt and continuing..."
def exercise_cpu():
for i in range(8):
print "working..."
for j in range(1000000):
pass
print "done"
and I call exercise_cpu(), then type some key combination (say, Ctrl-x-p
for the sake of the argument), I'd like the result to look something like
this:
>>> exercise_cpu()
working...
working...
working...
working...
working...
working...
caught interrupt and continuing...
working...
working...
done
I think I want to use the readline module to catch the key press Ctrl-x-p
and generate a signal, say SIGUSR1, then use the signal module to install
a signal handler to catch SIGUSR1. Is this the right approach, or is
there a better one? Does anyone show me an example of working code that
does this?
Linux only solutions are acceptable.
--
Steven
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