random_access_handle_service.hpp

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//
// windows/random_access_handle_service.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_RANDOM_ACCESS_HANDLE_SERVICE_HPP
#define ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_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/async_result.hpp"
#include "asio/detail/cstdint.hpp"
#include "asio/detail/win_iocp_handle_service.hpp"
#include "asio/error.hpp"
#include "asio/io_service.hpp"

#include "asio/detail/push_options.hpp"

namespace asio {
namespace windows {

class random_access_handle_service
#if defined(GENERATING_DOCUMENTATION)
  : public asio::io_service::service
#else
  : public asio::detail::service_base<random_access_handle_service>
#endif
{
public:
#if defined(GENERATING_DOCUMENTATION)
  static asio::io_service::id id;
#endif

private:
  // The type of the platform-specific implementation.
  typedef detail::win_iocp_handle_service service_impl_type;

public:
#if defined(GENERATING_DOCUMENTATION)
  typedef implementation_defined implementation_type;
#else
  typedef service_impl_type::implementation_type implementation_type;
#endif

#if defined(GENERATING_DOCUMENTATION)
  typedef implementation_defined native_type;
#else
  typedef service_impl_type::native_handle_type native_type;
#endif

#if defined(GENERATING_DOCUMENTATION)
  typedef implementation_defined native_handle_type;
#else
  typedef service_impl_type::native_handle_type native_handle_type;
#endif

  explicit random_access_handle_service(asio::io_service& io_service)
    : asio::detail::service_base<
        random_access_handle_service>(io_service),
      service_impl_(io_service)
  {
  }

  void construct(implementation_type& impl)
  {
    service_impl_.construct(impl);
  }

#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)
  void move_construct(implementation_type& impl,
      implementation_type& other_impl)
  {
    service_impl_.move_construct(impl, other_impl);
  }

  void move_assign(implementation_type& impl,
      random_access_handle_service& other_service,
      implementation_type& other_impl)
  {
    service_impl_.move_assign(impl, other_service.service_impl_, other_impl);
  }
#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION)

  void destroy(implementation_type& impl)
  {
    service_impl_.destroy(impl);
  }

  asio::error_code assign(implementation_type& impl,
      const native_handle_type& handle, asio::error_code& ec)
  {
    return service_impl_.assign(impl, handle, ec);
  }

  bool is_open(const implementation_type& impl) const
  {
    return service_impl_.is_open(impl);
  }

  asio::error_code close(implementation_type& impl,
      asio::error_code& ec)
  {
    return service_impl_.close(impl, ec);
  }

  native_type native(implementation_type& impl)
  {
    return service_impl_.native_handle(impl);
  }

  native_handle_type native_handle(implementation_type& impl)
  {
    return service_impl_.native_handle(impl);
  }

  asio::error_code cancel(implementation_type& impl,
      asio::error_code& ec)
  {
    return service_impl_.cancel(impl, ec);
  }

  template <typename ConstBufferSequence>
  std::size_t write_some_at(implementation_type& impl, uint64_t offset,
      const ConstBufferSequence& buffers, asio::error_code& ec)
  {
    return service_impl_.write_some_at(impl, offset, buffers, ec);
  }

  template <typename ConstBufferSequence, typename WriteHandler>
  ASIO_INITFN_RESULT_TYPE(WriteHandler,
      void (asio::error_code, std::size_t))
  async_write_some_at(implementation_type& impl,
      uint64_t offset, const ConstBufferSequence& buffers,
      ASIO_MOVE_ARG(WriteHandler) handler)
  {
    asio::detail::async_result_init<
      WriteHandler, void (asio::error_code, std::size_t)> init(
        ASIO_MOVE_CAST(WriteHandler)(handler));

    service_impl_.async_write_some_at(impl, offset, buffers, init.handler);

    return init.result.get();
  }

  template <typename MutableBufferSequence>
  std::size_t read_some_at(implementation_type& impl, uint64_t offset,
      const MutableBufferSequence& buffers, asio::error_code& ec)
  {
    return service_impl_.read_some_at(impl, offset, buffers, ec);
  }

  template <typename MutableBufferSequence, typename ReadHandler>
  ASIO_INITFN_RESULT_TYPE(ReadHandler,
      void (asio::error_code, std::size_t))
  async_read_some_at(implementation_type& impl,
      uint64_t offset, const MutableBufferSequence& buffers,
      ASIO_MOVE_ARG(ReadHandler) handler)
  {
    asio::detail::async_result_init<
      ReadHandler, void (asio::error_code, std::size_t)> init(
        ASIO_MOVE_CAST(ReadHandler)(handler));

    service_impl_.async_read_some_at(impl, offset, buffers, init.handler);

    return init.result.get();
  }

private:
  // Destroy all user-defined handler objects owned by the service.
  void shutdown_service()
  {
    service_impl_.shutdown_service();
  }

  // The platform-specific implementation.
  service_impl_type service_impl_;
};

} // namespace windows
} // namespace asio

#include "asio/detail/pop_options.hpp"

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

#endif // ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP