Enable mixed call stacks when debuggee loads a mono-2.0* dynamic library into the process. We still only process if a file exists on disk with the same process id. Also, enable mixed call stacks for non-main threads.

Author: joncham

UnityMixedCallstack.vsdconfigxml

@@ -12,6 +12,7 @@
           <NoFilter/>
           <Interface Name="IDkmCallStackFilter"/>
           <Interface Name="IDkmLoadCompleteNotification"/>
+          <Interface Name="IDkmModuleInstanceLoadNotification"/>
         </InterfaceGroup>
       </Implements>
     </Class>

UnityMixedCallstackFilter.cs

@@ -11,19 +11,18 @@
 
 namespace UnityMixedCallstack
 {
-    public class UnityMixedCallstackFilter : IDkmCallStackFilter, IDkmLoadCompleteNotification
+    public class UnityMixedCallstackFilter : IDkmCallStackFilter, IDkmLoadCompleteNotification, IDkmModuleInstanceLoadNotification
     {
         private static List<Range> _rangesSortedByIp = new List<Range>();
         private static FuzzyRangeComparer _comparer = new FuzzyRangeComparer();
-        private static bool _enabled = true;
+        private static bool _enabled;
         private static IVsOutputWindowPane _debugPane;
         private static string _currentFile;
         private static FileStream _fileStream;
         private static StreamReader _fileStreamReader;
 
         public void OnLoadComplete(DkmProcess process, DkmWorkList workList, DkmEventDescriptor eventDescriptor)
         {
-            _enabled = true;
             DisposeStreams();
 
             if (_debugPane == null)
@@ -32,14 +31,6 @@ public void OnLoadComplete(DkmProcess process, DkmWorkList workList, DkmEventDes
                 Guid debugPaneGuid = VSConstants.GUID_OutWindowDebugPane;
                 outWindow.GetPane(ref debugPaneGuid, out _debugPane);
             }
-
-            var env = Environment.GetEnvironmentVariable("UNITY_MIXED_CALLSTACK");
-            if (env == null || env == "0") // plugin not enabled
-            {
-                _debugPane.OutputString("Warning: To use the UnityMixedCallstack plugin please set the environment variable UNITY_MIXED_CALLSTACK=1 and relaunch Unity and Visual Studio\n");
-                _debugPane.Activate();
-                _enabled = false;
-            }
         }
 
         public DkmStackWalkFrame[] FilterNextFrame(DkmStackContext stackContext, DkmStackWalkFrame input)
@@ -53,9 +44,6 @@ public DkmStackWalkFrame[] FilterNextFrame(DkmStackContext stackContext, DkmStac
             if (input.InstructionAddress.ModuleInstance != null && input.InstructionAddress.ModuleInstance.Module != null) // code in existing module
                 return new[] { input };
 
-            if (!stackContext.Thread.IsMainThread) // error case
-                return new[] { input };
-
             if (!_enabled) // environment variable not set
                 return new[] { input };
 
@@ -190,5 +178,11 @@ private static bool TryGetDescriptionForIp(ulong ip, out string name)
             name = _rangesSortedByIp[index].Name;
             return true;
         }
+
+        public void OnModuleInstanceLoad(DkmModuleInstance moduleInstance, DkmWorkList workList, DkmEventDescriptorS eventDescriptor)
+        {
+            if (moduleInstance.Name.Contains("mono-2.0"))
+                _enabled = true;
+        }
     }
 }

source.extension.vsixmanifest

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PackageManifest Version="2.0.0" xmlns="http://schemas.microsoft.com/developer/vsx-schema/2011" xmlns:d="http://schemas.microsoft.com/developer/vsx-schema-design/2011">
   <Metadata>
-    <Identity Id="UnityMixedCallstack.mderoy.1bc395e8-c1ea-4a2d-8a37-19e7f0c302b9" Version="2.1" Language="en-US" Publisher="Jb Evain, Michael DeRoy, Jonathan Chambers" />
+    <Identity Id="UnityMixedCallstack.mderoy.1bc395e8-c1ea-4a2d-8a37-19e7f0c302b9" Version="2.2" Language="en-US" Publisher="Jb Evain, Michael DeRoy, Jonathan Chambers" />
     <DisplayName>Unity Mixed Callstack</DisplayName>
     <Description xml:space="preserve">Visual Studio native debugger extension to help debug native applications using Mono. Originally developed by Jb Evain, Updated for Unity by Michael DeRoy and Jonathan Chambers</Description>
   </Metadata>