Squashed 'third_party/boostorg/smart_ptr/' content from commit e37cd41
Change-Id: Ib1d9c588d60cbb7a3bad5a6f8b7e4761af21be72
git-subtree-dir: third_party/boostorg/smart_ptr
git-subtree-split: e37cd4154f492b3cd2ea8e87806614ffddf1163a
diff --git a/include/boost/detail/lightweight_mutex.hpp b/include/boost/detail/lightweight_mutex.hpp
new file mode 100644
index 0000000..b7a7f6d
--- /dev/null
+++ b/include/boost/detail/lightweight_mutex.hpp
@@ -0,0 +1,22 @@
+#ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
+#define BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+// boost/detail/lightweight_mutex.hpp - lightweight mutex
+//
+// Copyright (c) 2002, 2003 Peter Dimov and Multi Media Ltd.
+//
+// Distributed under the Boost Software License, Version 1.0.
+// See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/detail/lightweight_mutex.hpp>
+
+#endif // #ifndef BOOST_DETAIL_LIGHTWEIGHT_MUTEX_HPP_INCLUDED