yInfo-test

The purpose of this repository is to provide a minimal, reproducible example in order to debug the behavior of YARP yInfo function when it is executed in either yarplogger or console context.

Prerequisites

Follow the source installation of the robotology-superbuild.

How to build

mkdir build
cd build
cmake ..
make
sudo make install

Run using console

Terminal #1

yarpserver

Terminal #2

test_yInfo

Run using yarpmanger and inspect using yarplogger

Terminal #1

yarpserver

Terminal #2

yarplogger

Terminal #3

yarpmanager

• In the yarplogger window, start the logger using the start green button ▶
• In the yarpmanager window, double click on the application called Debug_yInfo_App, click on test_info module and run using the green start button ▶.
• Now in the yarplogger window, you should be able to see the current log session. Double click on it and look at the output.

⚠ Don't forget to setup the YARP_FORWARD_LOG_ENABLE environment variable.

Check for missing traces

As we said the yarplogger may not trace all the yInfo function calls. To check this automatically, you can run the check_log_file.sh passing a .log file as an argument (see the example below)

./check_log_file.sh build/yarprunlog_04_07_2021_23_41_24.log
Parsing log file...
Missing value 3224, previous was at [ Time delay ]: 0.0001 Counter value: 3223
Missing value 3512, previous was at [ Time delay ]: 0.0001 Counter value: 3511
Missing value 3513, previous was at
Missing value 3514, previous was at
Missing value 3515, previous was at
Missing value 8594, previous was at [ Time delay ]: 0.0001 Counter value: 8593
Missing value 8595, previous was at
Missing value 8596, previous was at
Done.

Each time that the yarplogger has missed to track a yInfo call, the script will disaply a Missing ... line.

A Missing ... reports:

• the missed value
• the current time delay used between 2 consecutives yInfo function calls.
• the last value tracked before the loss.

Note

If you change the number of values to generate, in main.cpp, you also have to update the total variable within the check_log_file.sh.