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+//
+// detail/reactor_op.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_DETAIL_REACTOR_OP_HPP
+#define ASIO_DETAIL_REACTOR_OP_HPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include "asio/detail/config.hpp"
+#include "asio/detail/operation.hpp"
+
+#include "asio/detail/push_options.hpp"
+
+namespace asio {
+namespace detail {
+
+class reactor_op
+ : public operation
+{
+public:
+ // The error code to be passed to the completion handler.
+ asio::error_code ec_;
+
+ // The operation key used for targeted cancellation.
+ void* cancellation_key_;
+
+ // The number of bytes transferred, to be passed to the completion handler.
+ std::size_t bytes_transferred_;
+
+ // Status returned by perform function. May be used to decide whether it is
+ // worth performing more operations on the descriptor immediately.
+ enum status { not_done, done, done_and_exhausted };
+
+ // Perform the operation. Returns true if it is finished.
+ status perform()
+ {
+ return perform_func_(this);
+ }
+
+protected:
+ typedef status (*perform_func_type)(reactor_op*);
+
+ reactor_op(const asio::error_code& success_ec,
+ perform_func_type perform_func, func_type complete_func)
+ : operation(complete_func),
+ ec_(success_ec),
+ cancellation_key_(0),
+ bytes_transferred_(0),
+ perform_func_(perform_func)
+ {
+ }
+
+private:
+ perform_func_type perform_func_;
+};
+
+} // namespace detail
+} // namespace asio
+
+#include "asio/detail/pop_options.hpp"
+
+#endif // ASIO_DETAIL_REACTOR_OP_HPP