basic_random_access_handle.hpp

Go to the documentation of this file.

//
// windows/basic_random_access_handle.hpp
// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
// Copyright (c) 2003-2015 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_WINDOWS_BASIC_RANDOM_ACCESS_HANDLE_HPP
#define ASIO_WINDOWS_BASIC_RANDOM_ACCESS_HANDLE_HPP

#if defined(_MSC_VER) && (_MSC_VER >= 1200)
# pragma once
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)

#include "asio/detail/config.hpp"

#if defined(ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) \
  || defined(GENERATING_DOCUMENTATION)

#include <cstddef>
#include "asio/detail/handler_type_requirements.hpp"
#include "asio/detail/throw_error.hpp"
#include "asio/error.hpp"
#include "asio/windows/basic_handle.hpp"
#include "asio/windows/random_access_handle_service.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
namespace windows {


template <typename RandomAccessHandleService = random_access_handle_service>
class basic_random_access_handle
  : public basic_handle<RandomAccessHandleService>
{
public:
  typedef typename RandomAccessHandleService::native_handle_type native_type;

  typedef typename RandomAccessHandleService::native_handle_type
    native_handle_type;


  explicit basic_random_access_handle(asio::io_service& io_service)
    : basic_handle<RandomAccessHandleService>(io_service)
  {
  }


  basic_random_access_handle(asio::io_service& io_service,
      const native_handle_type& handle)
    : basic_handle<RandomAccessHandleService>(io_service, handle)
  {
  }

#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)

  basic_random_access_handle(basic_random_access_handle&& other)
    : basic_handle<RandomAccessHandleService>(
        ASIO_MOVE_CAST(basic_random_access_handle)(other))
  {
  }


  basic_random_access_handle& operator=(basic_random_access_handle&& other)
  {
    basic_handle<RandomAccessHandleService>::operator=(
        ASIO_MOVE_CAST(basic_random_access_handle)(other));
    return *this;
  }
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)


  template <typename ConstBufferSequence>
  std::size_t write_some_at(uint64_t offset,
      const ConstBufferSequence& buffers)
  {
    asio::error_code ec;
    std::size_t s = this->get_service().write_some_at(
        this->get_implementation(), offset, buffers, ec);
    asio::detail::throw_error(ec, "write_some_at");
    return s;
  }


  template <typename ConstBufferSequence>
  std::size_t write_some_at(uint64_t offset,
      const ConstBufferSequence& buffers, asio::error_code& ec)
  {
    return this->get_service().write_some_at(
        this->get_implementation(), offset, buffers, ec);
  }


  template <typename ConstBufferSequence, typename WriteHandler>
  ASIO_INITFN_RESULT_TYPE(WriteHandler,
      void (asio::error_code, std::size_t))
  async_write_some_at(uint64_t offset,
      const ConstBufferSequence& buffers,
      ASIO_MOVE_ARG(WriteHandler) handler)
  {
    // If you get an error on the following line it means that your handler does
    // not meet the documented type requirements for a WriteHandler.
    ASIO_WRITE_HANDLER_CHECK(WriteHandler, handler) type_check;

    return this->get_service().async_write_some_at(this->get_implementation(),
        offset, buffers, ASIO_MOVE_CAST(WriteHandler)(handler));
  }


  template <typename MutableBufferSequence>
  std::size_t read_some_at(uint64_t offset,
      const MutableBufferSequence& buffers)
  {
    asio::error_code ec;
    std::size_t s = this->get_service().read_some_at(
        this->get_implementation(), offset, buffers, ec);
    asio::detail::throw_error(ec, "read_some_at");
    return s;
  }


  template <typename MutableBufferSequence>
  std::size_t read_some_at(uint64_t offset,
      const MutableBufferSequence& buffers, asio::error_code& ec)
  {
    return this->get_service().read_some_at(
        this->get_implementation(), offset, buffers, ec);
  }


  template <typename MutableBufferSequence, typename ReadHandler>
  ASIO_INITFN_RESULT_TYPE(ReadHandler,
      void (asio::error_code, std::size_t))
  async_read_some_at(uint64_t offset,
      const MutableBufferSequence& buffers,
      ASIO_MOVE_ARG(ReadHandler) handler)
  {
    // If you get an error on the following line it means that your handler does
    // not meet the documented type requirements for a ReadHandler.
    ASIO_READ_HANDLER_CHECK(ReadHandler, handler) type_check;

    return this->get_service().async_read_some_at(this->get_implementation(),
        offset, buffers, ASIO_MOVE_CAST(ReadHandler)(handler));
  }
};

} // namespace windows
} // namespace asio

#include "asio/detail/pop_options.hpp"

#endif // defined(ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE)
       //   || defined(GENERATING_DOCUMENTATION)

#endif // ASIO_WINDOWS_BASIC_RANDOM_ACCESS_HANDLE_HPP