1 files changed, 91 insertions, 0 deletions
diff --git a/tests/src/GC/Scenarios/Rootmem/rootmem.cs b/tests/src/GC/Scenarios/Rootmem/rootmem.cs
new file mode 100644
index 0000000000..b11d6d5a2a
--- /dev/null
+++ b/tests/src/GC/Scenarios/Rootmem/rootmem.cs
@@ -0,0 +1,91 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*******************************************************************/
+/* Test: RootMem
+/* Purpose: Test if Root class manage memory correctly against GC
+/* Coverage:    Root.Alloc(), Root.Free(), Root.Get()
+/*******************************************************************/
+
+namespace DefaultNamespace {
+    using System;
+    using System.Runtime.InteropServices;
+
+    internal class RootMem
+    {
+        internal long [] l;
+        internal static GCHandle [] root;
+        internal static int n;
+
+        public static int Main( String [] args )
+        {
+            int iSize = 1000;
+            Object [] arVar = new Object[iSize];
+            root = new GCHandle[iSize];
+            RootMem rm_obj;
+
+            Console.WriteLine("Test should return with ExitCode 100 ...");
+
+            for( n=0; n< iSize; n++ )
+            {
+                 rm_obj = new RootMem( n );
+                 root[n] = GCHandle.Alloc(rm_obj );
+            }
+            //Console.WriteLine("After save objects to Root and before GCed: "+GC.GetTotalMemory(false) );
+            GC.Collect();
+            GC.WaitForPendingFinalizers();
+            GC.Collect();
+            //Console.WriteLine("After save objects to Root and after GCed: "+GC.GetTotalMemory(false) );
+
+            Object v;
+            for( int i=0; i< iSize; i++)
+            {
+                v = ( root[i]) ;
+            }
+            //Console.WriteLine("After Get objects from root and before GCed: "+GC.GetTotalMemory(false) );
+            GC.Collect();
+            //Console.WriteLine("After Get objects from root and after GCed: "+GC.GetTotalMemory(false) );
+
+            for( int i=0; i<iSize; i++ )
+            {
+                root[i].Free();
+            }
+            //Console.WriteLine("After free root and before GCed: "+GC.GetTotalMemory(false) );
+            GC.Collect();
+            GC.WaitForPendingFinalizers();
+            GC.Collect();
+            //Console.WriteLine("After free root and after GCed: "+GC.GetTotalMemory(false) );
+            try
+            {
+                for( int i=0; i<iSize; i++ )
+                {
+                    arVar[i]= ( root[i].Target  );
+                }
+            }
+            catch(System.InvalidOperationException)
+            {
+                //expected exception is throw after gchandles were free
+                Console.WriteLine("test Passed");
+                return 100;
+            }
+
+            Console.WriteLine("test failed");
+            return 1;
+        }
+
+        public RootMem( int i )
+        {
+            if( i> 0)
+            {
+                l = new long[i];
+                l[0] = 0;
+                l[i-1] = i;
+            }
+        }
+
+        ~RootMem()
+        {
+        }
+    }
+}