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+/*
+ * Copyright (c) 2012 Nathan L. Binkert <nate@binkert.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef __MAKE_UNIQUE_HH__
+#define __MAKE_UNIQUE_HH__
+
+#include <memory>
+
+namespace std {
+namespace detail {
+
+// helper to construct a non-array unique_ptr
+template <typename T>
+struct make_unique_helper {
+ typedef std::unique_ptr<T> unique_ptr;
+
+ template <typename... Args>
+ static inline unique_ptr make(Args&&... args) {
+ return unique_ptr(new T(std::forward<Args>(args)...));
+ }
+};
+
+// helper to construct an array unique_ptr
+template<typename T>
+struct make_unique_helper<T[]> {
+ typedef std::unique_ptr<T[]> unique_ptr;
+
+ template <typename... Args>
+ static inline unique_ptr make(Args&&... args) {
+ return unique_ptr(new T[sizeof...(Args)]{std::forward<Args>(args)...});
+}
+};
+
+// helper to construct an array unique_ptr with specified extent
+template<typename T, std::size_t N>
+struct make_unique_helper<T[N]> {
+ typedef std::unique_ptr<T[]> unique_ptr;
+
+ template <typename... Args>
+ static inline unique_ptr make(Args&&... args) {
+ static_assert(N >= sizeof...(Args),
+ "For make_unique<T[N]> N must be as largs as the number of arguments");
+ return unique_ptr(new T[N]{std::forward<Args>(args)...});
+ }
+
+#if __GNUC__ == 4 && __GNUC_MINOR__ <= 6
+ // G++ 4.6 has an ICE when you have no arguments
+ static inline unique_ptr make() {
+ return unique_ptr(new T[N]);
+ }
+#endif
+};
+
+
+} // namespace detail
+
+template <typename T, typename... Args>
+inline typename detail::make_unique_helper<T>::unique_ptr
+make_unique(Args&&... args) {
+ return detail::make_unique_helper<T>::make(std::forward<Args>(args)...);
+}
+
+} // namespace std
+
+#endif // __MAKE_UNIQUE_HH__