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I have a ROS node that seems to exit immediately or not even run at all. I have test print statements before the main loop and it never seems to get to that point. roscore is running and no error messages appear in the terminal window.

#include <ros/ros.h>
#include <iostream>

#define ROS_LOOP_RATE 2000

int main(int argc, char* argv[])
{

    std::cout << "TEST1\n";
    ros::init(argc, argv, "network_wdg_node");

    std::cout << "TEST2\n";
    ros::NodeHandle wdgNodeHandle("~");

    std::cout << "TEST3\n";
    ros::Rate loop_rate(ROS_LOOP_RATE);

    std::cout << "TEST4\n";

    while(ros::ok())
    {
        std::cout << "INSIDE LOOP\n";
        ros::spinOnce();
        loop_rate.sleep();
    }
    return 0;
}

Here's my terminal output:

[rosrun] Looking in catkin libexec dirs: 
/home/catkin_ws/devel/lib/test
/home/catkin_ws/devel/share/test
/home/catkin_ws/src/test
[rosrun] Looking in rospack dir: /home/catkin_ws/src/test
[rosrun] Searching for network_wdg_node with permissions /111
[rosrun] Running  /home/catkin_ws/devel/lib/network_wdg/test_node

I can't seem to figure out why the node doesn't start running or even get to the first debug statement.

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  • $\begingroup$ Can you add your file structure? And maybe the relevant contents of your CMakeLists? And you're just running the node with rosrun? You could always run an strace -p <pid> on the process and see what it's doing, if anything. $\endgroup$ Feb 11 '20 at 15:18
  • 1
    $\begingroup$ I solved/figure out the issue. I was running "rosrun test_node test_node" when it was just building an executable named "node". It was my fault for not reading CMakeLists closely enough. $\endgroup$ Feb 16 '20 at 21:59
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I don't have the ability to promote the above comment where the OP confirms the answer:

I solved/figure out the issue. I was running "rosrun test_node test_node" when it was just building an executable named "node". It was my fault for not reading CMakeLists closely enough

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