整理

include/boost/atomic/detail/wait_caps_futex.hpp

@@ -0,0 +1,31 @@
+/*
+ * 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_futex.hpp
+ *
+ * This header defines waiting/notifying operations capabilities macros.
+ */
+
+#ifndef BOOST_ATOMIC_DETAIL_WAIT_CAPS_FUTEX_HPP_INCLUDED_
+#define BOOST_ATOMIC_DETAIL_WAIT_CAPS_FUTEX_HPP_INCLUDED_
+
+#include <boost/atomic/detail/config.hpp>
+#include <boost/atomic/detail/capabilities.hpp>
+#include <boost/atomic/detail/futex.hpp>
+
+#ifdef BOOST_HAS_PRAGMA_ONCE
+#pragma once
+#endif
+
+#if defined(BOOST_ATOMIC_DETAIL_HAS_FUTEX)
+// futexes are always 32-bit and they always supported address-free operations
+#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 // defined(BOOST_ATOMIC_DETAIL_HAS_FUTEX)
+
+#endif // BOOST_ATOMIC_DETAIL_WAIT_CAPS_FUTEX_HPP_INCLUDED_