keep server instance in a unique_ptr

Util/make_unique.hpp

@@ -0,0 +1,56 @@
+/*
+
+Copyright (c) 2013, Project OSRM, Dennis Luxen, others
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+Redistributions of source code must retain the above copyright notice, this list
+of conditions and the following disclaimer.
+Redistributions in binary form must reproduce the above copyright notice, this
+list of conditions and the following disclaimer in the documentation and/or
+other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*/
+
+#ifndef MAKE_UNIQUE_H__
+#define MAKE_UNIQUE_H__
+
+#include <cstdlib>
+#include <memory>
+#include <type_traits>
+
+namespace osrm
+{
+// Taken from http://msdn.microsoft.com/en-us/library/dn439780.asp
+// Note, that the snippet is broken there and needed minor massaging
+
+// make_unique<T>
+template <class T, class... Types> std::unique_ptr<T> make_unique(Types &&... Args)
+{
+    return (std::unique_ptr<T>(new T(std::forward<Types>(Args)...)));
+}
+
+// make_unique<T[]>
+template <class T> std::unique_ptr<T> make_unique(std::size_t Size)
+{
+    return (std::unique_ptr<T>(new T[Size]()));
+}
+
+// make_unique<T[N]> disallowed
+template <class T, class... Types>
+typename std::enable_if<std::extent<T>::value != 0, void>::type make_unique(Types &&...) = delete;
+}
+#endif