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how is rosh's ok() different from rospy.is_shutdown()?

asked 2011-07-08 07:54:27 -0500

updated 2014-01-28 17:10:00 -0500

ngrennan gravatar image

Specifically, what's the difference with how they handle a KeyboardInterrupt/SIGINT?

I would expect these two snippets to act the same, but they don't:

#!/usr/bin/env python
import rospy
r = rospy.Rate(10)
while not rospy.is_shutdown():
    print 'ok...'
    r.sleep()

and

#!/usr/bin/env rosh
r = Rate(10)
while ok():
    print "ok..."
    r.sleep()

The first example exits on Ctrl+C, but the second does not. What am I missing?

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answered 2011-07-08 10:01:46 -0500

kwc gravatar image

Most likely this is a bug in rosh. Can you file a ticket here with exact details on how you run your rosh sample?

https://code.ros.org/trac/ros/newticket

In general, rosh tries to handle SIGINT differently so that it can be used in an interactive interpreter. rosh is not as tested when running outside of iteractive mode.

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Asked: 2011-07-08 07:54:27 -0500

Seen: 4,350 times

Last updated: Jul 08 '11