整理

include/boost/atomic/detail/wait_caps_dragonfly_umtx.hpp

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+/*
+ * 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)
+ *
+ * Copyright (c) 2020 Andrey Semashev
+ */
+/*!
+ * \file   atomic/detail/wait_caps_dragonfly_umtx.hpp
+ *
+ * This header defines waiting/notifying operations capabilities macros.
+ */
+
+#ifndef BOOST_ATOMIC_DETAIL_WAIT_CAPS_DRAGONFLY_UMTX_HPP_INCLUDED_
+#define BOOST_ATOMIC_DETAIL_WAIT_CAPS_DRAGONFLY_UMTX_HPP_INCLUDED_
+
+#include <boost/atomic/detail/config.hpp>
+#include <boost/atomic/detail/capabilities.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+// DragonFly BSD umtx_sleep/umtx_wakeup use physical address to the atomic object as a key, which means it should support address-free operations.
+// https://man.dragonflybsd.org/?command=umtx&section=2
+
+#define BOOST_ATOMIC_HAS_NATIVE_INT32_WAIT_NOTIFY BOOST_ATOMIC_INT32_LOCK_FREE
+#define BOOST_ATOMIC_HAS_NATIVE_INT32_IPC_WAIT_NOTIFY BOOST_ATOMIC_INT32_LOCK_FREE
+
+#endif // BOOST_ATOMIC_DETAIL_WAIT_CAPS_DRAGONFLY_UMTX_HPP_INCLUDED_