fix: noisy memory leak warning on Unity 2019 (#700)

Closes: #696

Runtime/ArmatureAwase/ArmatureLock.cs

@@ -0,0 +1,41 @@
+using System;
+
+namespace nadena.dev.modular_avatar.core.armature_lock
+{
+    internal abstract class ArmatureLock : IDisposable
+    {
+        private bool _enableAssemblyReloadCallback;
+
+        protected bool EnableAssemblyReloadCallback
+        {
+            get => _enableAssemblyReloadCallback;
+            set
+            {
+                if (_enableAssemblyReloadCallback == value) return;
+                _enableAssemblyReloadCallback = value;
+#if UNITY_EDITOR
+                if (value)
+                {
+                    UnityEditor.AssemblyReloadEvents.beforeAssemblyReload += OnDomainUnload;
+                }
+                else
+                {
+                    UnityEditor.AssemblyReloadEvents.beforeAssemblyReload -= OnDomainUnload;
+                }
+#endif
+            }
+        }
+
+        public abstract void Prepare();
+        public abstract LockResult Execute();
+        public abstract bool IsStable();
+        public abstract void Dispose();
+
+        private void OnDomainUnload()
+        {
+            // Unity 2019 does not call deferred callbacks before domain unload completes,
+            // so we need to make sure to immediately destroy all our TransformAccessArrays.
+            DeferDestroy.DestroyImmediate(this);
+        }
+    }
+}

Runtime/ArmatureAwase/ArmatureLockController.cs

@@ -18,8 +18,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
         internal static ArmatureLockConfig instance { get; } = new ArmatureLockConfig();
 #endif
 
-        [SerializeField]
-        private bool _globalEnable = true;
+        [SerializeField] private bool _globalEnable = true;
 
         internal bool GlobalEnable
         {
@@ -28,10 +27,10 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             {
                 if (value == _globalEnable) return;
 
-                #if UNITY_EDITOR
+#if UNITY_EDITOR
                 Undo.RecordObject(this, "Toggle Edit Mode Bone Sync");
                 Menu.SetChecked(UnityMenuItems.TopMenu_EditModeBoneSync, value);
-                #endif
+#endif
 
                 _globalEnable = value;
 
@@ -47,7 +46,8 @@ namespace nadena.dev.modular_avatar.core.armature_lock
         [InitializeOnLoadMethod]
         static void Init()
         {
-            EditorApplication.delayCall += () => {
+            EditorApplication.delayCall += () =>
+            {
                 Menu.SetChecked(UnityMenuItems.TopMenu_EditModeBoneSync, instance._globalEnable);
             };
         }
@@ -74,7 +74,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
 
         private readonly ModularAvatarMergeArmature _mama;
         private readonly GetTransformsDelegate _getTransforms;
-        private IArmatureLock _lock;
+        private ArmatureLock _lock;
 
         private bool GlobalEnable => ArmatureLockConfig.instance.GlobalEnable;
         private bool _updateActive;
@@ -134,7 +134,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
         public ArmatureLockController(ModularAvatarMergeArmature mama, GetTransformsDelegate getTransforms)
         {
 #if UNITY_EDITOR
-            AssemblyReloadEvents.beforeAssemblyReload += Dispose;
+            AssemblyReloadEvents.beforeAssemblyReload += OnDomainUnload;
 #endif
 
             this._mama = mama;
@@ -287,12 +287,19 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             _lock?.Dispose();
             _lock = null;
 
-#if UNITY_EDITOR
-            AssemblyReloadEvents.beforeAssemblyReload -= Dispose;
-#endif
+            #if UNITY_EDITOR
+            AssemblyReloadEvents.beforeAssemblyReload -= OnDomainUnload;
+            #endif
 
             _controllers.Remove(_mama);
             UpdateActive = false;
         }
+
+        private void OnDomainUnload()
+        {
+            // Unity 2019 does not call deferred callbacks before domain unload completes,
+            // so we need to make sure to immediately destroy all our TransformAccessArrays.
+            DeferDestroy.DestroyImmediate(this);
+        }
     }
 }

Runtime/ArmatureAwase/BidirectionalArmatureLock.cs

@@ -13,7 +13,7 @@ using UnityEngine.Jobs;
 
 namespace nadena.dev.modular_avatar.core.armature_lock
 {
-    internal class BidirectionalArmatureLock : IDisposable, IArmatureLock
+    internal class BidirectionalArmatureLock : ArmatureLock, IDisposable
     {
         private bool _disposed;
         private TransformAccessArray _baseBoneAccess, _mergeBoneAccess;
@@ -129,7 +129,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             }
         }
 
-        public void Dispose()
+        public override void Dispose()
         {
             if (_disposed) return;
 
@@ -148,7 +148,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             _disposed = true;
         }
 
-        public void Prepare()
+        public override void Prepare()
         {
             if (_disposed) return;
 
@@ -194,7 +194,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             return true;
         }
 
-        public bool IsStable()
+        public override bool IsStable()
         {
             Prepare();
             if (!CheckConsistency()) return false;
@@ -203,7 +203,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             return WroteAny.Value == 0;
         }
 
-        public LockResult Execute()
+        public override LockResult Execute()
         {
             if (!CheckConsistency()) return LockResult.Failed;
 

Runtime/ArmatureAwase/DeferDestroy.cs

@@ -1,6 +1,7 @@
 #region
 
 using System;
+using UnityEngine;
 
 #endregion
 
@@ -8,8 +9,29 @@ namespace nadena.dev.modular_avatar.core.armature_lock
 {
     internal static class DeferDestroy
     {
+        private static bool _immediate = false;
+
+        internal static void DestroyImmediate(IDisposable obj)
+        {
+            var oldValue = _immediate;
+            _immediate = true;
+            try
+            {
+                obj.Dispose();
+            }
+            finally
+            {
+                _immediate = oldValue;
+            }
+        }
+
         internal static void DeferDestroyObj(IDisposable obj)
         {
+            if (_immediate)
+            {
+                obj.Dispose();
+                return;
+            }
 #if UNITY_EDITOR
             UnityEditor.EditorApplication.delayCall += () => obj.Dispose();
 #endif

Runtime/ArmatureAwase/IArmatureLock.cs

@@ -1,11 +0,0 @@
-using System;
-
-namespace nadena.dev.modular_avatar.core.armature_lock
-{
-    internal interface IArmatureLock : IDisposable
-    {
-        void Prepare();
-        LockResult Execute();
-        bool IsStable();
-    }
-}

Runtime/ArmatureAwase/OnewayArmatureLock.cs

@@ -16,7 +16,7 @@ using UnityEditor;
 
 namespace nadena.dev.modular_avatar.core.armature_lock
 {
-    internal class OnewayArmatureLock : IDisposable, IArmatureLock
+    internal class OnewayArmatureLock : ArmatureLock, IDisposable
     {
         struct BoneStaticData
         {
@@ -189,9 +189,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             _baseBonesAccessor = new TransformAccessArray(_baseBones);
             _mergeBonesAccessor = new TransformAccessArray(_mergeBones);
 
-#if UNITY_EDITOR
-            AssemblyReloadEvents.beforeAssemblyReload += Dispose;
-#endif
+            EnableAssemblyReloadCallback = true;
         }
 
         private bool SmallScale(Vector3 scale)
@@ -201,7 +199,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             return (scale.x < epsilon || scale.y < epsilon || scale.z < epsilon);
         }
 
-        public void Prepare()
+        public override void Prepare()
         {
             if (_disposed) return;
 
@@ -255,7 +253,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             return true;
         }
 
-        public bool IsStable()
+        public override bool IsStable()
         {
             Prepare();
             if (!CheckConsistency()) return false;
@@ -269,7 +267,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
         /// Executes the armature lock job.
         /// </summary>
         /// <returns>True if successful, false if cached data was invalidated and needs recreating</returns>
-        public LockResult Execute()
+        public override LockResult Execute()
         {
             if (!CheckConsistency()) return LockResult.Failed;
 
@@ -296,7 +294,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             }
         }
 
-        public void Dispose()
+        public override void Dispose()
         {
             if (_disposed) return;
 
@@ -312,9 +310,7 @@ namespace nadena.dev.modular_avatar.core.armature_lock
             DeferDestroy.DeferDestroyObj(_mergeBonesAccessor);
             _disposed = true;
 
-#if UNITY_EDITOR
-            AssemblyReloadEvents.beforeAssemblyReload -= Dispose;
-#endif
+            EnableAssemblyReloadCallback = false;
         }
     }
 }

UnitTests~/BlendshapeSyncTests/BlendshapeSyncIntegrationTest.prefab

@@ -26,19 +26,18 @@ Transform:
   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 3825275463613500755}
-  serializedVersion: 2
   m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
   m_LocalPosition: {x: 0.023681391, y: 1.0559628, z: -0.6872994}
   m_LocalScale: {x: 1, y: 1, z: 1}
-  m_ConstrainProportionsScale: 0
   m_Children:
   - {fileID: 3646968714803193661}
   - {fileID: 3646968713996568948}
   m_Father: {fileID: 0}
+  m_RootOrder: 0
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!95 &3825275463613500750
 Animator:
-  serializedVersion: 5
+  serializedVersion: 3
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}
   m_PrefabInstance: {fileID: 0}
@@ -51,12 +50,10 @@ Animator:
   m_UpdateMode: 0
   m_ApplyRootMotion: 0
   m_LinearVelocityBlending: 0
-  m_StabilizeFeet: 0
   m_WarningMessage: 
   m_HasTransformHierarchy: 1
   m_AllowConstantClipSamplingOptimization: 1
-  m_KeepAnimatorStateOnDisable: 0
-  m_WriteDefaultValuesOnDisable: 0
+  m_KeepAnimatorControllerStateOnDisable: 0
 --- !u!114 &3825275463613500753
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -325,12 +322,40 @@ MonoBehaviour:
   contentType: 0
   assetBundleUnityVersion: 
   fallbackStatus: 0
+--- !u!114 &3825275463971368602
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 4167925416990528462}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 6fd7cab7d93b403280f2f9da978d8a4f, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  Bindings:
+  - ReferenceMesh:
+      referencePath: BaseMesh
+    Blendshape: shape_0
+    LocalBlendshape: shape_0_local
+  - ReferenceMesh:
+      referencePath: BaseMesh
+    Blendshape: shape_1
+    LocalBlendshape: shape_1
+  - ReferenceMesh:
+      referencePath: MissingMesh
+    Blendshape: missing_mesh_shape
+    LocalBlendshape: missing_mesh_shape
+  - ReferenceMesh:
+      referencePath: 
+    Blendshape: missing_mesh_shape_2
+    LocalBlendshape: missing_mesh_shape_2
 --- !u!1001 &3825275463173128406
 PrefabInstance:
   m_ObjectHideFlags: 0
   serializedVersion: 2
   m_Modification:
-    serializedVersion: 3
     m_TransformParent: {fileID: 3825275463613500751}
     m_Modifications:
     - target: {fileID: -8679921383154817045, guid: 14ac2ad30c5d3444ca37f76cea5a7047,
@@ -429,9 +454,6 @@ PrefabInstance:
       value: BaseMesh
       objectReference: {fileID: 0}
     m_RemovedComponents: []
-    m_RemovedGameObjects: []
-    m_AddedGameObjects: []
-    m_AddedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: 14ac2ad30c5d3444ca37f76cea5a7047, type: 3}
 --- !u!4 &3646968714803193661 stripped
 Transform:
@@ -444,7 +466,6 @@ PrefabInstance:
   m_ObjectHideFlags: 0
   serializedVersion: 2
   m_Modification:
-    serializedVersion: 3
     m_TransformParent: {fileID: 3825275463613500751}
     m_Modifications:
     - target: {fileID: -8679921383154817045, guid: 14ac2ad30c5d3444ca37f76cea5a7047,
@@ -548,52 +569,16 @@ PrefabInstance:
       value: SyncedMesh
       objectReference: {fileID: 0}
     m_RemovedComponents: []
-    m_RemovedGameObjects: []
-    m_AddedGameObjects: []
-    m_AddedComponents:
-    - targetCorrespondingSourceObject: {fileID: 919132149155446097, guid: 14ac2ad30c5d3444ca37f76cea5a7047,
-        type: 3}
-      insertIndex: -1
-      addedObject: {fileID: 3825275463971368602}
   m_SourcePrefab: {fileID: 100100000, guid: 14ac2ad30c5d3444ca37f76cea5a7047, type: 3}
---- !u!4 &3646968713996568948 stripped
-Transform:
-  m_CorrespondingSourceObject: {fileID: -8679921383154817045, guid: 14ac2ad30c5d3444ca37f76cea5a7047,
-    type: 3}
-  m_PrefabInstance: {fileID: 3825275463971368607}
-  m_PrefabAsset: {fileID: 0}
 --- !u!1 &4167925416990528462 stripped
 GameObject:
   m_CorrespondingSourceObject: {fileID: 919132149155446097, guid: 14ac2ad30c5d3444ca37f76cea5a7047,
     type: 3}
   m_PrefabInstance: {fileID: 3825275463971368607}
   m_PrefabAsset: {fileID: 0}
---- !u!114 &3825275463971368602
-MonoBehaviour:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
+--- !u!4 &3646968713996568948 stripped
+Transform:
+  m_CorrespondingSourceObject: {fileID: -8679921383154817045, guid: 14ac2ad30c5d3444ca37f76cea5a7047,
+    type: 3}
+  m_PrefabInstance: {fileID: 3825275463971368607}
   m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 4167925416990528462}
-  m_Enabled: 1
-  m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 6fd7cab7d93b403280f2f9da978d8a4f, type: 3}
-  m_Name: 
-  m_EditorClassIdentifier: 
-  Bindings:
-  - ReferenceMesh:
-      referencePath: BaseMesh
-    Blendshape: shape_0
-    LocalBlendshape: shape_0_local
-  - ReferenceMesh:
-      referencePath: BaseMesh
-    Blendshape: shape_1
-    LocalBlendshape: shape_1
-  - ReferenceMesh:
-      referencePath: MissingMesh
-    Blendshape: missing_mesh_shape
-    LocalBlendshape: missing_mesh_shape
-  - ReferenceMesh:
-      referencePath: 
-    Blendshape: missing_mesh_shape_2
-    LocalBlendshape: missing_mesh_shape_2