Debugging with Juno (multiple restarts necessary to make code changes debuggable)

General Usage
1

Hello,

I use Julia v1.1, Atom 1.37.0 x64, Juno 0.8.3. under Windows 10. Sometimes when try to debug my code Juno doesn´t recognize my code or the code changes I have made. So that I have to restart Julia relatively often.

Does somebody else has this problem? Or is it a known problem?

For debugging I use the command Juno@run myfunc() or Juno@enter myfunc() with the packages Debugger, Rebugger, Revise and JulianInterpreter and the includet command for the files, where I would like to set breakpoints.

Do I miss something for the right handling of the debugger?

Best regards,
Volker

1 Like
2

Furthermore sometimes when I type in a variable name in the command prompt in debug mode, which is already created and listed in the workspace, I get an UndefVarError message. Then I tried to go ahead with debug next line and the code, which is depending on the same variable, is evaluated.

3

I’m experiencing both your issues.

For your second issue, see here
https://github.com/JunoLab/Juno.jl/issues/287

1 Like
4

Thanks. This is very helpful. This solves at least the problem with the command prompt.

5

Do you know something about the first issue? In example if it will be fixed in the next couple month?

6

This is a bit vague – did you re-eval the code in the right module? Or did you rely on Revise? If the latter, did you make sure that Revise knows about the module/file you’ve loaded?

7

Have you followed these instructions?
https://timholy.github.io/Revise.jl/dev/config/

Hint: a situation where I detected that the cited configuration does not work is when you have set the environment variable JULIA_DEPOT_PATH to a place different from the default directory. In such case, if your packages live in “xxxx/.julia”, then it seems that “xxxx/.julia/config/” is not the place where the “startup.jl” is looked for. Editing “etc/julia/startup.jl” in your Julia installation directory works though.

2 Likes
8

My startup config looks like this:

user = "Volker"
lib_path = string("C:/Users/", user, "/Data/Ju_Lib/")
root_test = [root for (root, dirs, files) in walkdir(lib_path)]
dirs_test = [dirs for (root, dirs, files) in walkdir(lib_path)]
lib_paths = []
for i in 1:length(dirs_test), j in 1:length(dirs_test[i])
    if ~isempty(dirs_test[i])
        push!(LOAD_PATH, (replace(string(root_test[i], "/", dirs_test[i][j]), "//" => "/")))
    end
end

using Debugger
using Rebugger
using JuliaInterpreter
using Revise

includet(string(lib_path, "eaopt/Individual.jl")
includet(string(lib_path, "eaopt/Population.jl")

using Population
using Individual

I add the paths of all my folders in directory C:/Users/", user, "/Data/Ju_Lib/ the LOAD_PATH, so that the using command finds my moduls. I don´t know if this could be the mistake.

Maybe the following command will fix this. I will reply my progress.

@async Revise.wait_steal_repl_backend()
9

The configuration helps, so that the module will be recompiled after restart Julia. I add the following code to my startup.

using Debugger
using Rebugger
using JuliaInterpreter

ENV["JULIA_REVISE"] = "auto"
ENV["JULIA_REVISE_INCLUDE"] = 1

atreplinit() do repl
    try
        @eval using Revise
        @async Revise.wait_steal_repl_backend()
    catch
    end
end
´´´