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Fix uncaught exception in joint_state_controller #630

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rhaschke
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Using sim time in Gazebo, the starting time is close to zero, such that time - ros::Duration(1/publish_rate_) becomes negative. This causes an exception to be thrown: "Time is out of dual 32-bit range".

@bmagyar
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bmagyar commented Feb 29, 2024

Thank you!

Would you like a release of this or happy with it being merged for now?

Using sim time in Gazebo, the starting time is close to zero,
such that time - ros::Duration(1/publish_rate_) is negative.
This causes an exception to be thrown: "Time is out of dual 32-bit range".
@rhaschke
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A merge would be fine for now. Sorry for pushing broken code initially. It should work now.

@01binary
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01binary commented Feb 29, 2024

Totally forgot about this. I also have a fix in #629, but the unit tests are failing and I couldn't find a way to fix them.

We can close that pull request and delete the branch if this version of the fix gets merged instead.

One small note: I see that you fixed the issue by catching an exception instead of ensuring it doesn't occur by performing a greater-than check. This code could potentially execute in a tight (update) loop, so throwing an exception and catching it every loop iteration, in a loop that's supposed to run at a specific frequency may not be the best thing long-term.

@rhaschke
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rhaschke commented Mar 1, 2024

@bmagyar, can you please rerun the CI tests? I think the test JointStateControllerTest.valuesOk is flaky. Locally, it works for me most of the time but occasionally fails.

@bmagyar bmagyar merged commit 678b92a into ros-controls:noetic-devel Mar 1, 2024
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@rhaschke rhaschke deleted the fix-joint-state-controller branch March 1, 2024 11:55
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3 participants