Chris@16: //
Chris@16: // detail/task_io_service_operation.hpp
Chris@16: // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Chris@16: //
Chris@101: // Copyright (c) 2003-2015 Christopher M. Kohlhoff (chris at kohlhoff dot com)
Chris@16: //
Chris@16: // Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16: // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: //
Chris@16: 
Chris@16: #ifndef BOOST_ASIO_DETAIL_TASK_IO_SERVICE_OPERATION_HPP
Chris@16: #define BOOST_ASIO_DETAIL_TASK_IO_SERVICE_OPERATION_HPP
Chris@16: 
Chris@16: #if defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: # pragma once
Chris@16: #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
Chris@16: 
Chris@16: #include <boost/system/error_code.hpp>
Chris@16: #include <boost/asio/detail/handler_tracking.hpp>
Chris@16: #include <boost/asio/detail/op_queue.hpp>
Chris@16: 
Chris@16: #include <boost/asio/detail/push_options.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace asio {
Chris@16: namespace detail {
Chris@16: 
Chris@16: class task_io_service;
Chris@16: 
Chris@16: // Base class for all operations. A function pointer is used instead of virtual
Chris@16: // functions to avoid the associated overhead.
Chris@16: class task_io_service_operation BOOST_ASIO_INHERIT_TRACKED_HANDLER
Chris@16: {
Chris@16: public:
Chris@16:   void complete(task_io_service& owner,
Chris@16:       const boost::system::error_code& ec, std::size_t bytes_transferred)
Chris@16:   {
Chris@16:     func_(&owner, this, ec, bytes_transferred);
Chris@16:   }
Chris@16: 
Chris@16:   void destroy()
Chris@16:   {
Chris@16:     func_(0, this, boost::system::error_code(), 0);
Chris@16:   }
Chris@16: 
Chris@16: protected:
Chris@16:   typedef void (*func_type)(task_io_service*,
Chris@16:       task_io_service_operation*,
Chris@16:       const boost::system::error_code&, std::size_t);
Chris@16: 
Chris@16:   task_io_service_operation(func_type func)
Chris@16:     : next_(0),
Chris@16:       func_(func),
Chris@16:       task_result_(0)
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16:   // Prevents deletion through this type.
Chris@16:   ~task_io_service_operation()
Chris@16:   {
Chris@16:   }
Chris@16: 
Chris@16: private:
Chris@16:   friend class op_queue_access;
Chris@16:   task_io_service_operation* next_;
Chris@16:   func_type func_;
Chris@16: protected:
Chris@16:   friend class task_io_service;
Chris@16:   unsigned int task_result_; // Passed into bytes transferred.
Chris@16: };
Chris@16: 
Chris@16: } // namespace detail
Chris@16: } // namespace asio
Chris@16: } // namespace boost
Chris@16: 
Chris@16: #include <boost/asio/detail/pop_options.hpp>
Chris@16: 
Chris@16: #endif // BOOST_ASIO_DETAIL_TASK_IO_SERVICE_OPERATION_HPP