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cancelGoal crashes if called before any goal has been sent...

asked 2011-02-27 20:50:01 -0500

felix gravatar image

updated 2011-02-27 20:59:17 -0500

cancelGoal crashes if called before one goal has been sent.

OpenPRS comes with ABSOLUTELY NO WARRANTY.
[ERROR] [1298889427.632366743]: Trying to cancelGoal() when no goal is running. You are incorrectly using SimpleActionClient
[ERROR] [1298889427.632673206]: Trying to cancel() on an inactive ClientGoalHandle. You are incorrectly using a ClientGoalHandle
Segmentation fault

if you send at least one goal, then it just reports the problem but keep running.

[ERROR] [1298889509.884434617]: BUG: Got a transition to CommState [PREEMPTING] when in SimpleGoalState [DONE]

Is this normal? should I fill a ticket?

(I know, it is stupid to cancel something which does not yet exist... but it should not crash.)

Just to add that cancelAllGoals behaves better and does not crash. It does not even report any error.

By the way, where are the source for these functions (cancelGoal and cancelAllGoals), I cannot find them in my ubuntu virtual box appliance.

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answered 2011-02-28 12:24:26 -0500

vpradeep gravatar image

Felix, thank you for filing a ticket.

This is now being tracked at https://code.ros.org/trac/ros-pkg/ticket/4836

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answered 2011-02-28 10:10:38 -0500

tfoote gravatar image
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@tfoote im having a problem when i send the goal ac.sendGoal(goal) if i dont put ac.waitForResult(); the goal is not posted or the robot does not move, when i ac.waitForResult(); it does move. But due to this line im unable to post a new goal until the waitforresults ends. do you have any idea why or any ideas on how to solve it? i would really appreciate it

ctguell gravatar imagectguell ( 2013-11-04 08:14:23 -0500 )edit

This is a new question. Please create a new question with enough detail to reproduce your issue.

tfoote gravatar imagetfoote ( 2013-11-04 08:58:29 -0500 )edit

@tfoote thanks, one last question is there a way to get the position of the robot?

ctguell gravatar imagectguell ( 2013-11-07 05:31:23 -0500 )edit
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answered 2011-02-28 15:55:39 -0500

felix gravatar image

By the way, any hints as where are located these functions?

cancelGoal and cancelAllGoals...

I cannot find them in my distrib (Ubuntu with the WG VirtualBox Appliance)

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answered 2011-03-03 06:38:17 -0500

vpradeep gravatar image

If you installed ROS using binaries/debians, then you won't necessarily have source files. However, since actionlib is almost entirely header based, you can find the client code using roscd:

roscd actionlib/include/actionlib/client/

You can find cancelGoal and cancelAllGoals in simple_action_client.h

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Asked: 2011-02-27 20:50:01 -0500

Seen: 749 times

Last updated: Mar 03 '11