Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web.Services/System/Web/Services/Interop/UserThread.cs

@@ -0,0 +1,38 @@
+namespace System.Web.Services.Interop {
+    using System;
+    using System.Threading;
+    using System.Runtime.InteropServices;
+
+    [StructLayout(LayoutKind.Sequential)]
+    internal class UserThread {
+        internal int pSidBuffer; // byte * to buffer of size dwSidLen.
+        internal int dwSidLen;
+        internal int dwTid;
+
+        internal UserThread() {
+            pSidBuffer = 0;
+            dwSidLen = 0;
+            dwTid = 0;
+        }
+
+        public override bool Equals(object obj) {
+            if (! (obj is UserThread)) {
+                return false;
+            }
+
+            UserThread ut = (UserThread) obj;
+
+            if (ut.dwTid == this.dwTid &&
+                ut.pSidBuffer == this.pSidBuffer &&
+                ut.dwSidLen == this.dwSidLen) {
+                return true;
+            }
+
+            return false;
+        }
+
+        public override int GetHashCode() {
+            return base.GetHashCode();
+        }
+    }
+}