ceph/src/boost/boost/asio/detail/reactor_op.hpp

   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.
  42   status perform()
  43   {
  44     return perform_func_(this);
  45   }
  46
  47 protected:
  48   typedef status (*perform_func_type)(reactor_op*);
  49
  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