| // |
| // random_access_handle_service.hpp |
| // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| // |
| // Copyright (c) 2003-2008 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 BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP |
| #define BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP |
| |
| #if defined(_MSC_VER) && (_MSC_VER >= 1200) |
| # pragma once |
| #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) |
| |
| #include <boost/asio/detail/push_options.hpp> |
| |
| #include <boost/asio/detail/push_options.hpp> |
| #include <cstddef> |
| #include <boost/config.hpp> |
| #include <boost/cstdint.hpp> |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #include <boost/asio/error.hpp> |
| #include <boost/asio/io_service.hpp> |
| #include <boost/asio/detail/service_base.hpp> |
| #include <boost/asio/detail/win_iocp_handle_service.hpp> |
| |
| #if !defined(BOOST_ASIO_DISABLE_WINDOWS_RANDOM_ACCESS_HANDLE) |
| # if defined(BOOST_ASIO_HAS_IOCP) |
| # define BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE 1 |
| # endif // defined(BOOST_ASIO_HAS_IOCP) |
| #endif // !defined(BOOST_ASIO_DISABLE_WINDOWS_RANDOM_ACCESS_HANDLE) |
| |
| #if defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) \ |
| || defined(GENERATING_DOCUMENTATION) |
| |
| namespace boost { |
| namespace asio { |
| namespace windows { |
| |
| /// Default service implementation for a random-access handle. |
| class random_access_handle_service |
| #if defined(GENERATING_DOCUMENTATION) |
| : public boost::asio::io_service::service |
| #else |
| : public boost::asio::detail::service_base<random_access_handle_service> |
| #endif |
| { |
| public: |
| #if defined(GENERATING_DOCUMENTATION) |
| /// The unique service identifier. |
| static boost::asio::io_service::id id; |
| #endif |
| |
| private: |
| // The type of the platform-specific implementation. |
| typedef detail::win_iocp_handle_service service_impl_type; |
| |
| public: |
| /// The type of a random-access handle implementation. |
| #if defined(GENERATING_DOCUMENTATION) |
| typedef implementation_defined implementation_type; |
| #else |
| typedef service_impl_type::implementation_type implementation_type; |
| #endif |
| |
| /// The native handle type. |
| #if defined(GENERATING_DOCUMENTATION) |
| typedef implementation_defined native_type; |
| #else |
| typedef service_impl_type::native_type native_type; |
| #endif |
| |
| /// Construct a new random-access handle service for the specified io_service. |
| explicit random_access_handle_service(boost::asio::io_service& io_service) |
| : boost::asio::detail::service_base< |
| random_access_handle_service>(io_service), |
| service_impl_(boost::asio::use_service<service_impl_type>(io_service)) |
| { |
| } |
| |
| /// Destroy all user-defined handler objects owned by the service. |
| void shutdown_service() |
| { |
| } |
| |
| /// Construct a new random-access handle implementation. |
| void construct(implementation_type& impl) |
| { |
| service_impl_.construct(impl); |
| } |
| |
| /// Destroy a random-access handle implementation. |
| void destroy(implementation_type& impl) |
| { |
| service_impl_.destroy(impl); |
| } |
| |
| /// Assign an existing native handle to a random-access handle. |
| boost::system::error_code assign(implementation_type& impl, |
| const native_type& native_handle, boost::system::error_code& ec) |
| { |
| return service_impl_.assign(impl, native_handle, ec); |
| } |
| |
| /// Determine whether the handle is open. |
| bool is_open(const implementation_type& impl) const |
| { |
| return service_impl_.is_open(impl); |
| } |
| |
| /// Close a random-access handle implementation. |
| boost::system::error_code close(implementation_type& impl, |
| boost::system::error_code& ec) |
| { |
| return service_impl_.close(impl, ec); |
| } |
| |
| /// Get the native handle implementation. |
| native_type native(implementation_type& impl) |
| { |
| return service_impl_.native(impl); |
| } |
| |
| /// Cancel all asynchronous operations associated with the handle. |
| boost::system::error_code cancel(implementation_type& impl, |
| boost::system::error_code& ec) |
| { |
| return service_impl_.cancel(impl, ec); |
| } |
| |
| /// Write the given data at the specified offset. |
| template <typename ConstBufferSequence> |
| std::size_t write_some_at(implementation_type& impl, boost::uint64_t offset, |
| const ConstBufferSequence& buffers, boost::system::error_code& ec) |
| { |
| return service_impl_.write_some_at(impl, offset, buffers, ec); |
| } |
| |
| /// Start an asynchronous write at the specified offset. |
| template <typename ConstBufferSequence, typename WriteHandler> |
| void async_write_some_at(implementation_type& impl, boost::uint64_t offset, |
| const ConstBufferSequence& buffers, WriteHandler handler) |
| { |
| service_impl_.async_write_some_at(impl, offset, buffers, handler); |
| } |
| |
| /// Read some data from the specified offset. |
| template <typename MutableBufferSequence> |
| std::size_t read_some_at(implementation_type& impl, boost::uint64_t offset, |
| const MutableBufferSequence& buffers, boost::system::error_code& ec) |
| { |
| return service_impl_.read_some_at(impl, offset, buffers, ec); |
| } |
| |
| /// Start an asynchronous read at the specified offset. |
| template <typename MutableBufferSequence, typename ReadHandler> |
| void async_read_some_at(implementation_type& impl, boost::uint64_t offset, |
| const MutableBufferSequence& buffers, ReadHandler handler) |
| { |
| service_impl_.async_read_some_at(impl, offset, buffers, handler); |
| } |
| |
| private: |
| // The service that provides the platform-specific implementation. |
| service_impl_type& service_impl_; |
| }; |
| |
| } // namespace windows |
| } // namespace asio |
| } // namespace boost |
| |
| #endif // defined(BOOST_ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) |
| // || defined(GENERATING_DOCUMENTATION) |
| |
| #include <boost/asio/detail/pop_options.hpp> |
| |
| #endif // BOOST_ASIO_WINDOWS_RANDOM_ACCESS_HANDLE_SERVICE_HPP |