How to detect the finish of compilation in batch mode?

Unity Engine
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1

I run a method in batch mode. it contains a call of PlayerSettings.SetScriptingDefineSymbolsForGroup, this call starts the compilation.
I want to know how to detect when the compilation is finished.
EditorApplication.isCompiling - does not work properly, it always returns true (even a few hours after starting the compilation) - I assume it results from batch mode.
Does anyone have any ideas?

2

AssemblyReloadEvents.afterAssemblyReload should do the trick, but may also get called during initial project open so you need to safeguard this.

1 Like
3

Thank you for your quick response.
I applied your recommendation and a few others, however, I found that the compilation became stuck after this log ā€˜[ScriptCompilation] Requested script compilation because: Define symbols changedā€™.

I also added these subscriptions, however, no events are raised after the message log


CompilationPipeline.assemblyCompilationFinished += AssemblyCompilationFinished;
CompilationPipeline.compilationFinished += CompilationFinished;
CompilationPipeline.compilationStarted += CompilationStarted;
AssetDatabase.importPackageFailed += ImportPackageFailed;
AssetDatabase.importPackageCompleted += ImportPackageCompleted;
AssetDatabase.importPackageStarted += ImportPackageStarted;
CompilationPipeline.assemblyCompilationNotRequired += AssemblyCompilationNotRequired;

My Unity version is 2022.3.25, and I assume the issue is inside the patch and I need to update the version to the current latest patch

4

Can you provide the context? It matters where, in which method or class you add these. Some of the events donā€™t ā€œsurviveā€ domain reload and may need to be re-registered every time.

5 
[InitializeOnLoad]
    public class CompilationTracker
    {
        static CompilationTracker()
        {
            Debug.Log($"[Utils][CompilationTracker] CompilationTracker");
            CompilationPipeline.assemblyCompilationFinished += AssemblyCompilationFinished;
            CompilationPipeline.compilationFinished += CompilationFinished;
            CompilationPipeline.compilationStarted += CompilationStarted;
            AssetDatabase.importPackageFailed += ImportPackageFailed;
            AssetDatabase.importPackageCompleted += ImportPackageCompleted;
            AssetDatabase.importPackageStarted += ImportPackageStarted;
            CompilationPipeline.assemblyCompilationNotRequired += AssemblyCompilationNotRequired;
            
        }

As far as I understand the attribute [InitializeOnLoad] keeps the subscription alive during the editor session

1 Like
6

Yep, that will re-register these events the moment domain reload occurs so you shouldnā€™t miss any of these events.

But Iā€™m not seeing the ones I suggested:

AssemblyReloadEvents.beforeAssemblyReload += OnBeforeAssemblyReload;
AssemblyReloadEvents.afterAssemblyReload += OnAfterAssemblyReload;

Still at least some of the others should get called.
The script is in an Editor folder or assembly?

7

It is in an Editor folder.
Yes, you are right I forgot to add it for test purposes, I will rerun it with these 2 test events.
I mean I added this class for test purposes to understand what happens during the pipeline

8

Hey, @CodeSmile )
OnBeforeAssemblyReload happened once and OnBeforeAssemblyReload did not occur.
Besides, I strongly decided to update the version to the latest patch, because the flow had been working fine for 2 years before moving to 2022.3.