THRIFT-1031 Patch to compile Thrift for vc++ 9.0 and 10.0
Patch: James Dickson and Alexandre Parenteau

git-svn-id: https://svn.apache.org/repos/asf/thrift/trunk@1171777 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/windows/TWinsockSingleton.h b/lib/cpp/src/windows/TWinsockSingleton.h
new file mode 100644
index 0000000..134c7b0
--- /dev/null
+++ b/lib/cpp/src/windows/TWinsockSingleton.h
@@ -0,0 +1,77 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#ifndef _THRIFT_TRANSPORT_WINDOWS_TWINSOCKSINGLETON_H_
+#define _THRIFT_TRANSPORT_WINDOWS_TWINSOCKSINGLETON_H_ 1
+
+#if defined(_MSC_VER) && (_MSC_VER > 1200)
+#pragma once
+#endif // _MSC_VER
+
+#ifndef _WIN32
+#error This is a MSVC header only.
+#endif
+
+// boost
+#include <boost/noncopyable.hpp>
+#include <boost/scoped_ptr.hpp>
+#include <boost/thread/once.hpp>
+
+namespace apache { namespace thrift { namespace transport {
+
+/**
+ * Winsock2 must be intialised once only in order to create sockets. This class
+ * performs a one time initialisation when create is called.
+ */
+class TWinsockSingleton : private boost::noncopyable
+{
+
+public:
+
+    typedef boost::scoped_ptr<TWinsockSingleton> instance_ptr;
+
+private:
+
+    friend void boost::call_once(void (*func)(void), boost::once_flag& flag);
+
+private:
+
+    TWinsockSingleton(void);
+
+public:
+
+    ~TWinsockSingleton(void);
+
+public:
+
+    static void create(void);
+
+private:
+
+    static void init(void);
+
+private:
+
+    static instance_ptr     instance_ptr_;
+    static boost::once_flag flags_;
+};
+
+}}} // apache::thrift::transport
+
+#endif // _THRIFT_TRANSPORT_WINDOWS_TWINSOCKSINGLETON_H_