diff options
Diffstat (limited to 'lib/asio/windows/random_access_handle.hpp')
| -rw-r--r-- | lib/asio/windows/random_access_handle.hpp | 378 |
1 files changed, 0 insertions, 378 deletions
diff --git a/lib/asio/windows/random_access_handle.hpp b/lib/asio/windows/random_access_handle.hpp deleted file mode 100644 index 301d5f8..0000000 --- a/lib/asio/windows/random_access_handle.hpp +++ /dev/null @@ -1,378 +0,0 @@ -// -// windows/random_access_handle.hpp -// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2018 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_HPP -#define ASIO_WINDOWS_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" -#include "asio/windows/overlapped_handle.hpp" - -#if defined(ASIO_HAS_WINDOWS_RANDOM_ACCESS_HANDLE) \ - || defined(GENERATING_DOCUMENTATION) - -#if defined(ASIO_ENABLE_OLD_SERVICES) -# include "asio/windows/basic_random_access_handle.hpp" -#endif // defined(ASIO_ENABLE_OLD_SERVICES) - -#include "asio/detail/push_options.hpp" - -namespace asio { -namespace windows { - -#if defined(ASIO_ENABLE_OLD_SERVICES) -// Typedef for the typical usage of a random-access handle. -typedef basic_random_access_handle<> random_access_handle; -#else // defined(ASIO_ENABLE_OLD_SERVICES) -/// Provides random-access handle functionality. -/** - * The windows::random_access_handle class provides asynchronous and - * blocking random-access handle functionality. - * - * @par Thread Safety - * @e Distinct @e objects: Safe.@n - * @e Shared @e objects: Unsafe. - */ -class random_access_handle - : public overlapped_handle -{ -public: - /// Construct a random_access_handle without opening it. - /** - * This constructor creates a random-access handle without opening it. The - * handle needs to be opened before data can be written to or read from it. - * - * @param io_context The io_context object that the random-access handle will - * use to dispatch handlers for any asynchronous operations performed on the - * handle. - */ - explicit random_access_handle(asio::io_context& io_context) - : overlapped_handle(io_context) - { - } - - /// Construct a random_access_handle on an existing native handle. - /** - * This constructor creates a random-access handle object to hold an existing - * native handle. - * - * @param io_context The io_context object that the random-access handle will - * use to dispatch handlers for any asynchronous operations performed on the - * handle. - * - * @param handle The new underlying handle implementation. - * - * @throws asio::system_error Thrown on failure. - */ - random_access_handle(asio::io_context& io_context, - const native_handle_type& handle) - : overlapped_handle(io_context, handle) - { - } - -#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) - /// Move-construct a random_access_handle from another. - /** - * This constructor moves a random-access handle from one object to another. - * - * @param other The other random_access_handle object from which the - * move will occur. - * - * @note Following the move, the moved-from object is in the same state as if - * constructed using the @c random_access_handle(io_context&) - * constructor. - */ - random_access_handle(random_access_handle&& other) - : overlapped_handle(std::move(other)) - { - } - - /// Move-assign a random_access_handle from another. - /** - * This assignment operator moves a random-access handle from one object to - * another. - * - * @param other The other random_access_handle object from which the - * move will occur. - * - * @note Following the move, the moved-from object is in the same state as if - * constructed using the @c random_access_handle(io_context&) - * constructor. - */ - random_access_handle& operator=(random_access_handle&& other) - { - overlapped_handle::operator=(std::move(other)); - return *this; - } -#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) - - /// Write some data to the handle at the specified offset. - /** - * This function is used to write data to the random-access handle. The - * function call will block until one or more bytes of the data has been - * written successfully, or until an error occurs. - * - * @param offset The offset at which the data will be written. - * - * @param buffers One or more data buffers to be written to the handle. - * - * @returns The number of bytes written. - * - * @throws asio::system_error Thrown on failure. An error code of - * asio::error::eof indicates that the connection was closed by the - * peer. - * - * @note The write_some_at operation may not write all of the data. Consider - * using the @ref write_at function if you need to ensure that all data is - * written before the blocking operation completes. - * - * @par Example - * To write a single data buffer use the @ref buffer function as follows: - * @code - * handle.write_some_at(42, asio::buffer(data, size)); - * @endcode - * See the @ref buffer documentation for information on writing multiple - * buffers in one go, and how to use it with arrays, boost::array or - * std::vector. - */ - 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; - } - - /// Write some data to the handle at the specified offset. - /** - * This function is used to write data to the random-access handle. The - * function call will block until one or more bytes of the data has been - * written successfully, or until an error occurs. - * - * @param offset The offset at which the data will be written. - * - * @param buffers One or more data buffers to be written to the handle. - * - * @param ec Set to indicate what error occurred, if any. - * - * @returns The number of bytes written. Returns 0 if an error occurred. - * - * @note The write_some operation may not transmit all of the data to the - * peer. Consider using the @ref write_at function if you need to ensure that - * all data is written before the blocking operation completes. - */ - 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); - } - - /// Start an asynchronous write at the specified offset. - /** - * This function is used to asynchronously write data to the random-access - * handle. The function call always returns immediately. - * - * @param offset The offset at which the data will be written. - * - * @param buffers One or more data buffers to be written to the handle. - * Although the buffers object may be copied as necessary, ownership of the - * underlying memory blocks is retained by the caller, which must guarantee - * that they remain valid until the handler is called. - * - * @param handler The handler to be called when the write operation completes. - * Copies will be made of the handler as required. The function signature of - * the handler must be: - * @code void handler( - * const asio::error_code& error, // Result of operation. - * std::size_t bytes_transferred // Number of bytes written. - * ); @endcode - * Regardless of whether the asynchronous operation completes immediately or - * not, the handler will not be invoked from within this function. Invocation - * of the handler will be performed in a manner equivalent to using - * asio::io_context::post(). - * - * @note The write operation may not transmit all of the data to the peer. - * Consider using the @ref async_write_at function if you need to ensure that - * all data is written before the asynchronous operation completes. - * - * @par Example - * To write a single data buffer use the @ref buffer function as follows: - * @code - * handle.async_write_some_at(42, asio::buffer(data, size), handler); - * @endcode - * See the @ref buffer documentation for information on writing multiple - * buffers in one go, and how to use it with arrays, boost::array or - * std::vector. - */ - 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; - - asio::async_completion<WriteHandler, - void (asio::error_code, std::size_t)> init(handler); - - this->get_service().async_write_some_at(this->get_implementation(), - offset, buffers, init.completion_handler); - - return init.result.get(); - } - - /// Read some data from the handle at the specified offset. - /** - * This function is used to read data from the random-access handle. The - * function call will block until one or more bytes of data has been read - * successfully, or until an error occurs. - * - * @param offset The offset at which the data will be read. - * - * @param buffers One or more buffers into which the data will be read. - * - * @returns The number of bytes read. - * - * @throws asio::system_error Thrown on failure. An error code of - * asio::error::eof indicates that the connection was closed by the - * peer. - * - * @note The read_some operation may not read all of the requested number of - * bytes. Consider using the @ref read_at function if you need to ensure that - * the requested amount of data is read before the blocking operation - * completes. - * - * @par Example - * To read into a single data buffer use the @ref buffer function as follows: - * @code - * handle.read_some_at(42, asio::buffer(data, size)); - * @endcode - * See the @ref buffer documentation for information on reading into multiple - * buffers in one go, and how to use it with arrays, boost::array or - * std::vector. - */ - 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; - } - - /// Read some data from the handle at the specified offset. - /** - * This function is used to read data from the random-access handle. The - * function call will block until one or more bytes of data has been read - * successfully, or until an error occurs. - * - * @param offset The offset at which the data will be read. - * - * @param buffers One or more buffers into which the data will be read. - * - * @param ec Set to indicate what error occurred, if any. - * - * @returns The number of bytes read. Returns 0 if an error occurred. - * - * @note The read_some operation may not read all of the requested number of - * bytes. Consider using the @ref read_at function if you need to ensure that - * the requested amount of data is read before the blocking operation - * completes. - */ - 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); - } - - /// Start an asynchronous read at the specified offset. - /** - * This function is used to asynchronously read data from the random-access - * handle. The function call always returns immediately. - * - * @param offset The offset at which the data will be read. - * - * @param buffers One or more buffers into which the data will be read. - * Although the buffers object may be copied as necessary, ownership of the - * underlying memory blocks is retained by the caller, which must guarantee - * that they remain valid until the handler is called. - * - * @param handler The handler to be called when the read operation completes. - * Copies will be made of the handler as required. The function signature of - * the handler must be: - * @code void handler( - * const asio::error_code& error, // Result of operation. - * std::size_t bytes_transferred // Number of bytes read. - * ); @endcode - * Regardless of whether the asynchronous operation completes immediately or - * not, the handler will not be invoked from within this function. Invocation - * of the handler will be performed in a manner equivalent to using - * asio::io_context::post(). - * - * @note The read operation may not read all of the requested number of bytes. - * Consider using the @ref async_read_at function if you need to ensure that - * the requested amount of data is read before the asynchronous operation - * completes. - * - * @par Example - * To read into a single data buffer use the @ref buffer function as follows: - * @code - * handle.async_read_some_at(42, asio::buffer(data, size), handler); - * @endcode - * See the @ref buffer documentation for information on reading into multiple - * buffers in one go, and how to use it with arrays, boost::array or - * std::vector. - */ - 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; - - asio::async_completion<ReadHandler, - void (asio::error_code, std::size_t)> init(handler); - - this->get_service().async_read_some_at(this->get_implementation(), - offset, buffers, init.completion_handler); - - return init.result.get(); - } -}; -#endif // defined(ASIO_ENABLE_OLD_SERVICES) - -} // 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_HPP |