From c74a782ad22c57fa6e85fb2d786e612e2b713eb9 Mon Sep 17 00:00:00 2001
From: Kleis Auke Wolthuizen <github@kleisauke.nl>
Date: Thu, 9 May 2024 13:52:09 +0200
Subject: [PATCH] More debugging

---
 src/NetVips/VipsProgress.cs              | 2 +-
 tests/NetVips.Tests/IoFuncsTests.cs      | 6 ++++--
 tests/NetVips.Tests/NetVips.Tests.csproj | 1 +
 3 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/NetVips/VipsProgress.cs b/src/NetVips/VipsProgress.cs
index f09936b..3881730 100644
--- a/src/NetVips/VipsProgress.cs
+++ b/src/NetVips/VipsProgress.cs
@@ -66,6 +66,6 @@ public struct VipsProgress
         /// <summary>
         /// Start time.
         /// </summary>
-        private IntPtr StartPtr;
+        public IntPtr Start;
     }
 }
\ No newline at end of file
diff --git a/tests/NetVips.Tests/IoFuncsTests.cs b/tests/NetVips.Tests/IoFuncsTests.cs
index 62ffc20..8686742 100644
--- a/tests/NetVips.Tests/IoFuncsTests.cs
+++ b/tests/NetVips.Tests/IoFuncsTests.cs
@@ -6,6 +6,7 @@ namespace NetVips.Tests
     using System.Runtime.InteropServices;
     using Xunit;
     using Xunit.Abstractions;
+    using ObjectLayoutInspector;
 
     public class IoFuncsTests : IClassFixture<TestsFixture>
     {
@@ -245,10 +246,11 @@ void EvalCallback(Image image, VipsProgress progressStruct)
                 _testOutputHelper.WriteLine($"   tpels = {progressStruct.TPels} (total number of pels)");
                 _testOutputHelper.WriteLine($"   npels = {progressStruct.NPels} (number of pels computed so far)");
                 _testOutputHelper.WriteLine($"   percent = {progressStruct.Percent} (percent complete)");
-                //_testOutputHelper.WriteLine($"   active = {progressStruct.Start.Active} (timer active)");
+                //_testOutputHelper.WriteLine($"   active = {Marshal.PtrToStructure<GTimer>(progressStruct.Start).Active} (timer active)");
             }
 
-            _testOutputHelper.WriteLine($"sizeof(VipsProgress): {Marshal.SizeOf<VipsProgress>()}");
+            _testOutputHelper.WriteLine(TypeLayout.GetLayout<VipsProgress>().ToString());
+            _testOutputHelper.WriteLine(TypeLayout.GetLayout<GTimer>().ToString());
 
             im.SetProgress(true);
             im.SignalConnect(Enums.Signals.PreEval, EvalCallback);
diff --git a/tests/NetVips.Tests/NetVips.Tests.csproj b/tests/NetVips.Tests/NetVips.Tests.csproj
index d35d1f1..90cd1fe 100644
--- a/tests/NetVips.Tests/NetVips.Tests.csproj
+++ b/tests/NetVips.Tests/NetVips.Tests.csproj
@@ -23,6 +23,7 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.CSharp" Version="4.7.0" Condition="'$(MSBuildRuntimeType)' == 'Mono'" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.9.0" />
+    <PackageReference Include="ObjectLayoutInspector" Version="0.1.4" />
     <PackageReference Include="xunit" Version="2.8.1-pre.9" />
     <PackageReference Include="Xunit.SkippableFact" Version="1.4.13" />
   </ItemGroup>