Added IDisposable functionality to ObjectPool (and ListPool)

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Runtime/Util/ListPool.cs

             return s_ListPool.Get();
         }
 
+        public static PooledObject<List<T>> GetDisposable()
+        {
+            return s_ListPool.GetDisposable();
+        }
+
         public static void Release(List<T> toRelease)
         {
             s_ListPool.Release(toRelease);

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Runtime/Util/ObjectPool.cs

+using System;
 using System.Collections.Generic;
 using UnityEngine.Events;
 
             if (m_ActionOnGet != null)
                 m_ActionOnGet(element);
             return element;
+        }
+
+        public PooledObject<T> GetDisposable()
+        {
+            return new PooledObject<T>(this, Get());
         }
 
         public void Release(T element)

MaterialGraphProject/Assets/UnityShaderEditor/Editor/Drawing/MaterialGraphInspector.cs

         {
             if (node == null)
                 return;
-            var childNodes = ListPool<INode>.Get();
-            NodeUtils.DepthFirstCollectNodesFromNode(childNodes, node);
-            foreach (var childNode in childNodes)
+            using (var childNodes = ListPool<INode>.GetDisposable())
-                action(childNode);
+                NodeUtils.DepthFirstCollectNodesFromNode(childNodes.value, node);
+                foreach (var childNode in childNodes.value)
+                {
+                    action(childNode);
+                }
-            ListPool<INode>.Release(childNodes);
         }
     }
 }

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Runtime/Util/PooledObject.cs

+using System;
+
+namespace UnityEngine.Graphing
+{
+    public class PooledObject<T> : IDisposable where T : new()
+    {
+        private ObjectPool<T> m_ObjectPool;
+
+        public T value { get; private set; }
+
+        internal PooledObject(ObjectPool<T> objectPool, T value)
+        {
+            m_ObjectPool = objectPool;
+            this.value = value;
+        }
+
+        private void ReleaseUnmanagedResources()
+        {
+            m_ObjectPool.Release(value);
+        }
+
+        public void Dispose()
+        {
+            ReleaseUnmanagedResources();
+            GC.SuppressFinalize(this);
+        }
+
+        ~PooledObject()
+        {
+            ReleaseUnmanagedResources();
+        }
+    }
+}

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Runtime/Util/PooledObject.cs.meta

+fileFormatVersion: 2
+guid: 7c55d0bf939d8458d8a982fb96a32364
+timeCreated: 1483023793
+licenseType: Pro
+MonoImporter:
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: