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2 Commits

Author SHA1 Message Date
max
bd76fc1b25 start working on assembly loader
to be used with the generated assemblies from the user code.
2024-07-25 22:59:11 +02:00
max
d80cc51aff naming 2024-07-25 22:58:07 +02:00
5 changed files with 119 additions and 2 deletions

View File

@ -69,7 +69,7 @@ private static void HandleOnGui()
ImGui.ShowDemoWindow();
ProjectGui.OnGui();
EditorProjectGui.OnGui();
}
}
}

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@ -0,0 +1,8 @@
using System.Runtime.Loader;
namespace Nerfed.Editor.Project;
internal class EditorAssemblyLoadContext : AssemblyLoadContext
{
public EditorAssemblyLoadContext() : base(isCollectible: true) { }
}

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@ -0,0 +1,109 @@
using Nerfed.Runtime;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.CompilerServices;
namespace Nerfed.Editor.Project;
// https://github.com/godotengine/godot/blob/master/modules/mono/glue/GodotSharp/GodotPlugins/Main.c
// https://gitlab.com/robertk92/assemblyreloadtest/-/blob/main/AppContextTest/Program.cs
internal static class EditorAssemblyLoader
{
private sealed class EditorAssemblyLoadContextWrapper
{
private EditorAssemblyLoadContext assemblyLoadContext;
private readonly WeakReference weakReference;
private EditorAssemblyLoadContextWrapper(EditorAssemblyLoadContext assemblyLoadContext, WeakReference weakReference)
{
this.assemblyLoadContext = assemblyLoadContext;
this.weakReference = weakReference;
}
public bool IsCollectible
{
[MethodImpl(MethodImplOptions.NoInlining)]
// If assemblyLoadContext is null we already started unloading, so it was collectible.
get => assemblyLoadContext?.IsCollectible ?? true;
}
public bool IsAlive
{
[MethodImpl(MethodImplOptions.NoInlining)]
get => weakReference.IsAlive;
}
[MethodImpl(MethodImplOptions.NoInlining)]
public static (Assembly, EditorAssemblyLoadContextWrapper) CreateAndLoad(AssemblyName assemblyName)
{
EditorAssemblyLoadContext context = new EditorAssemblyLoadContext();
WeakReference reference = new WeakReference(context, trackResurrection: true);
EditorAssemblyLoadContextWrapper wrapper = new EditorAssemblyLoadContextWrapper(context, reference);
Assembly assembly = context.LoadFromAssemblyName(assemblyName);
return (assembly, wrapper);
}
[MethodImpl(MethodImplOptions.NoInlining)]
internal void Unload()
{
assemblyLoadContext?.Unload();
assemblyLoadContext = null;
}
}
private static (Assembly, EditorAssemblyLoadContextWrapper) Load(string assemblyFilePath)
{
string assemblyFileName = Path.GetFileNameWithoutExtension(assemblyFilePath);
AssemblyName assemblyName = new AssemblyName(assemblyFileName);
return EditorAssemblyLoadContextWrapper.CreateAndLoad(assemblyName);
}
private static bool Unload(EditorAssemblyLoadContextWrapper assemblyLoadContextWrapper)
{
if (assemblyLoadContextWrapper == null)
{
return true;
}
if (!assemblyLoadContextWrapper.IsCollectible)
{
Log.Error($"{assemblyLoadContextWrapper} is not collectable!");
return false;
}
assemblyLoadContextWrapper.Unload();
GC.Collect();
GC.WaitForPendingFinalizers();
TimeSpan timeout = TimeSpan.FromSeconds(30);
Stopwatch stopwatch = Stopwatch.StartNew();
while (assemblyLoadContextWrapper.IsAlive)
{
GC.Collect(GC.MaxGeneration, GCCollectionMode.Forced);
GC.WaitForPendingFinalizers();
if (!assemblyLoadContextWrapper.IsAlive)
{
break;
}
if (stopwatch.Elapsed.TotalSeconds % 10 == 0)
{
Log.Info("Tring to unload assembly...");
}
if (stopwatch.Elapsed >= timeout)
{
Log.Error("Failed to unload assembly!");
return false;
}
}
return true;
}
}

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@ -2,7 +2,7 @@
namespace Nerfed.Editor.Project;
internal static class ProjectGui
internal static class EditorProjectGui
{
private static string projectDirectory = string.Empty;
private static string projectName = string.Empty;