1 files changed, 54 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Runtime/ProfileOptimization.cs b/src/mscorlib/src/System/Runtime/ProfileOptimization.cs
new file mode 100644
index 0000000000..c877d2106d
--- /dev/null
+++ b/src/mscorlib/src/System/Runtime/ProfileOptimization.cs
@@ -0,0 +1,54 @@
+// 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.
+
+////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////
+//
+//    This class defines entry point for multi-core JIT API
+//
+//
+namespace System.Runtime {
+
+    using System;
+    
+    using System.Reflection;
+
+    using System.Security;
+    using System.Security.Permissions;
+    
+    using System.Runtime;
+    using System.Runtime.InteropServices;
+    using System.Runtime.Versioning;
+    using System.Runtime.CompilerServices;
+
+#if FEATURE_MULTICOREJIT
+
+    public static class ProfileOptimization
+    {
+        [DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
+        [SecurityCritical]
+        [SuppressUnmanagedCodeSecurity]
+        internal static extern void InternalSetProfileRoot(string directoryPath);
+
+        [DllImport(JitHelpers.QCall, CharSet = CharSet.Unicode)]
+        [SecurityCritical]
+        [SuppressUnmanagedCodeSecurity]
+        internal static extern void InternalStartProfile(string profile, IntPtr ptrNativeAssemblyLoadContext);
+
+        [SecurityCritical]
+        public static void SetProfileRoot(string directoryPath)
+        {
+            InternalSetProfileRoot(directoryPath);
+        }
+
+        [SecurityCritical]
+        public static void StartProfile(string profile)
+        {
+            InternalStartProfile(profile, IntPtr.Zero);
+        }
+    }
+
+#endif
+}
+