Odin Rqtclose May 2026

def shutdown_plugin(self): rospy.loginfo("odin rqtclose: Starting shutdown sequence") # Disconnect callbacks self.pub.unregister() rospy.loginfo("odin rqtclose: Publishers unregistered") # Call parent super().shutdown_plugin() rospy.loginfo("odin rqtclose: Complete") If you see the first log but not the last, you’ve found a hang. Attach strace to the stuck rqt process (find PID via ps aux | grep rqt ):

trap cleanup EXIT rosrun rqt_gui rqt_gui & rqt_pid=$! wait $rqt_pid Example of a safe shutdown in a Python rqt plugin: odin rqtclose

sudo strace -p <PID> -e trace=network If you see repeated poll or recvfrom calls without returning, the GUI is waiting for a dead ROS topic. Before closing rqt , run: def shutdown_plugin(self): rospy

rosnode list After rqtclose fails, run again. If the rqt node still appears, it’s still alive. Force-kill it: run: rosnode list After rqtclose fails