整理

include/boost/smart_ptr/owner_hash.hpp

@@ -0,0 +1,26 @@
+#ifndef BOOST_SMART_PTR_OWNER_HASH_HPP_INCLUDED
+#define BOOST_SMART_PTR_OWNER_HASH_HPP_INCLUDED
+
+// Copyright 2020 Peter Dimov
+// Distributed under the Boost Software License, Version 1.0.
+// https://www.boost.org/LICENSE_1_0.txt
+
+#include <cstddef>
+
+namespace boost
+{
+
+template<class T> struct owner_hash
+{
+    typedef std::size_t result_type;
+    typedef T argument_type;
+
+    std::size_t operator()( T const & t ) const noexcept
+    {
+        return t.owner_hash_value();
+    }
+};
+
+} // namespace boost
+
+#endif  // #ifndef BOOST_SMART_PTR_OWNER_HASH_HPP_INCLUDED