From 280625afb4b24557a2a405340a2aa6b93d457d6e Mon Sep 17 00:00:00 2001
From: v-didara <v-didara@microsoft.com>
Date: Thu, 6 Nov 2014 18:56:51 -0800
Subject: [PATCH] Implementing IDisposable interface for PersistentVM class as
 it is causing OOM exceptions.

---
 .../Model/PersistentVM.cs                     | 30 ++++++++++++++++++-
 1 file changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/ServiceManagement/Compute/Commands.ServiceManagement/Model/PersistentVM.cs b/src/ServiceManagement/Compute/Commands.ServiceManagement/Model/PersistentVM.cs
index 7f1ba15db..d6d2227ca 100644
--- a/src/ServiceManagement/Compute/Commands.ServiceManagement/Model/PersistentVM.cs
+++ b/src/ServiceManagement/Compute/Commands.ServiceManagement/Model/PersistentVM.cs
@@ -12,6 +12,7 @@
 // limitations under the License.
 // ----------------------------------------------------------------------------------
 
+using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.Security.Cryptography.X509Certificates;
@@ -19,7 +20,7 @@
 
 namespace Microsoft.WindowsAzure.Commands.ServiceManagement.Model
 {
-    public class PersistentVM : IPersistentVM
+    public class PersistentVM : IPersistentVM,IDisposable
     {
         public string AvailabilitySetName
         {
@@ -131,6 +132,33 @@ public PersistentVM GetInstance()
         {
             return this;
         }
+
+        public void Dispose()
+        {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+
+        protected virtual void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                //Free managed resources
+                ResourceExtensionReferences = null;
+                DataVirtualHardDisksToBeDeleted = null;
+                X509Certificates = null;
+                WinRMCertificate = null;
+                ConfigurationSets = null;
+                DataVirtualHardDisks = null;
+                OSVirtualHardDisk = null;
+            }
+            //Free unmanaged resources
+        }
+
+        ~PersistentVM()
+        {
+            Dispose(false);
+        }
     }
 }