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-rw-r--r--3rdparty/asio/include/asio/wait_traits.hpp56
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+//
+// wait_traits.hpp
+// ~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// 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)
+//
+
+#ifndef ASIO_WAIT_TRAITS_HPP
+#define ASIO_WAIT_TRAITS_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+
+/// Wait traits suitable for use with the basic_waitable_timer class template.
+template <typename Clock>
+struct wait_traits
+{
+ /// Convert a clock duration into a duration used for waiting.
+ /**
+ * @returns @c d.
+ */
+ static typename Clock::duration to_wait_duration(
+ const typename Clock::duration& d)
+ {
+ return d;
+ }
+
+ /// Convert a clock duration into a duration used for waiting.
+ /**
+ * @returns @c d.
+ */
+ static typename Clock::duration to_wait_duration(
+ const typename Clock::time_point& t)
+ {
+ typename Clock::time_point now = Clock::now();
+ if (now + (Clock::duration::max)() < t)
+ return (Clock::duration::max)();
+ if (now + (Clock::duration::min)() > t)
+ return (Clock::duration::min)();
+ return t - now;
+ }
+};
+
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_WAIT_TRAITS_HPP