1 // 2 // detail/reactor_op.hpp 3 // ~~~~~~~~~~~~~~~~~~~~~ 4 // 5 // Copyright (c) 2003-2019 Christopher M. Kohlhoff (chris at kohlhoff dot com) 6 // 7 // Distributed under the Boost Software License, Version 1.0. (See accompanying 8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) 9 // 10 11 #ifndef BOOST_ASIO_DETAIL_REACTOR_OP_HPP 12 #define BOOST_ASIO_DETAIL_REACTOR_OP_HPP 13 14 #if defined(_MSC_VER) && (_MSC_VER >= 1200) 15 # pragma once 16 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) 17 18 #include <boost/asio/detail/config.hpp> 19 #include <boost/asio/detail/operation.hpp> 20 21 #include <boost/asio/detail/push_options.hpp> 22 23 namespace boost { 24 namespace asio { 25 namespace detail { 26 27 class reactor_op 28 : public operation 29 { 30 public: 31 // The error code to be passed to the completion handler. 32 boost::system::error_code ec_; 33 34 // The number of bytes transferred, to be passed to the completion handler. 35 std::size_t bytes_transferred_; 36 37 // Status returned by perform function. May be used to decide whether it is 38 // worth performing more operations on the descriptor immediately. 39 enum status { not_done, done, done_and_exhausted }; 40 41 // Perform the operation. Returns true if it is finished. perform()42 status perform() 43 { 44 return perform_func_(this); 45 } 46 47 protected: 48 typedef status (*perform_func_type)(reactor_op*); 49 reactor_op(perform_func_type perform_func,func_type complete_func)50 reactor_op(perform_func_type perform_func, func_type complete_func) 51 : operation(complete_func), 52 bytes_transferred_(0), 53 perform_func_(perform_func) 54 { 55 } 56 57 private: 58 perform_func_type perform_func_; 59 }; 60 61 } // namespace detail 62 } // namespace asio 63 } // namespace boost 64 65 #include <boost/asio/detail/pop_options.hpp> 66 67 #endif // BOOST_ASIO_DETAIL_REACTOR_OP_HPP 68