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Diffstat (limited to 'lib/asio/serial_port.hpp')
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diff --git a/lib/asio/serial_port.hpp b/lib/asio/serial_port.hpp new file mode 100644 index 0000000..27bb63e --- /dev/null +++ b/lib/asio/serial_port.hpp @@ -0,0 +1,769 @@ +// +// serial_port.hpp +// ~~~~~~~~~~~~~~~ +// +// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// Copyright (c) 2008 Rep Invariant Systems, Inc. (info@repinvariant.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_SERIAL_PORT_HPP +#define ASIO_SERIAL_PORT_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_SERIAL_PORT) \ + || defined(GENERATING_DOCUMENTATION) + +#include <string> +#include "asio/async_result.hpp" +#include "asio/basic_io_object.hpp" +#include "asio/detail/handler_type_requirements.hpp" +#include "asio/detail/throw_error.hpp" +#include "asio/error.hpp" +#include "asio/io_context.hpp" +#include "asio/serial_port_base.hpp" + +#if defined(ASIO_HAS_MOVE) +# include <utility> +#endif // defined(ASIO_HAS_MOVE) + +#if defined(ASIO_ENABLE_OLD_SERVICES) +# include "asio/basic_serial_port.hpp" +#else // defined(ASIO_ENABLE_OLD_SERVICES) +# if defined(ASIO_HAS_IOCP) +# include "asio/detail/win_iocp_serial_port_service.hpp" +# define ASIO_SVC_T detail::win_iocp_serial_port_service +# else +# include "asio/detail/reactive_serial_port_service.hpp" +# define ASIO_SVC_T detail::reactive_serial_port_service +# endif +#endif // defined(ASIO_ENABLE_OLD_SERVICES) + +#include "asio/detail/push_options.hpp" + +namespace asio { + +#if defined(ASIO_ENABLE_OLD_SERVICES) +// Typedef for the typical usage of a serial port. +typedef basic_serial_port<> serial_port; +#else // defined(ASIO_ENABLE_OLD_SERVICES) +/// Provides serial port functionality. +/** + * The serial_port class provides a wrapper over serial port functionality. + * + * @par Thread Safety + * @e Distinct @e objects: Safe.@n + * @e Shared @e objects: Unsafe. + */ +class serial_port + : ASIO_SVC_ACCESS basic_io_object<ASIO_SVC_T>, + public serial_port_base +{ +public: + /// The type of the executor associated with the object. + typedef io_context::executor_type executor_type; + + /// The native representation of a serial port. +#if defined(GENERATING_DOCUMENTATION) + typedef implementation_defined native_handle_type; +#else + typedef ASIO_SVC_T::native_handle_type native_handle_type; +#endif + + /// A basic_serial_port is always the lowest layer. + typedef serial_port lowest_layer_type; + + /// Construct a serial_port without opening it. + /** + * This constructor creates a serial port without opening it. + * + * @param io_context The io_context object that the serial port will use to + * dispatch handlers for any asynchronous operations performed on the port. + */ + explicit serial_port(asio::io_context& io_context) + : basic_io_object<ASIO_SVC_T>(io_context) + { + } + + /// Construct and open a serial_port. + /** + * This constructor creates and opens a serial port for the specified device + * name. + * + * @param io_context The io_context object that the serial port will use to + * dispatch handlers for any asynchronous operations performed on the port. + * + * @param device The platform-specific device name for this serial + * port. + */ + explicit serial_port(asio::io_context& io_context, + const char* device) + : basic_io_object<ASIO_SVC_T>(io_context) + { + asio::error_code ec; + this->get_service().open(this->get_implementation(), device, ec); + asio::detail::throw_error(ec, "open"); + } + + /// Construct and open a serial_port. + /** + * This constructor creates and opens a serial port for the specified device + * name. + * + * @param io_context The io_context object that the serial port will use to + * dispatch handlers for any asynchronous operations performed on the port. + * + * @param device The platform-specific device name for this serial + * port. + */ + explicit serial_port(asio::io_context& io_context, + const std::string& device) + : basic_io_object<ASIO_SVC_T>(io_context) + { + asio::error_code ec; + this->get_service().open(this->get_implementation(), device, ec); + asio::detail::throw_error(ec, "open"); + } + + /// Construct a serial_port on an existing native serial port. + /** + * This constructor creates a serial port object to hold an existing native + * serial port. + * + * @param io_context The io_context object that the serial port will use to + * dispatch handlers for any asynchronous operations performed on the port. + * + * @param native_serial_port A native serial port. + * + * @throws asio::system_error Thrown on failure. + */ + serial_port(asio::io_context& io_context, + const native_handle_type& native_serial_port) + : basic_io_object<ASIO_SVC_T>(io_context) + { + asio::error_code ec; + this->get_service().assign(this->get_implementation(), + native_serial_port, ec); + asio::detail::throw_error(ec, "assign"); + } + +#if defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) + /// Move-construct a serial_port from another. + /** + * This constructor moves a serial port from one object to another. + * + * @param other The other serial_port 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 serial_port(io_context&) constructor. + */ + serial_port(serial_port&& other) + : basic_io_object<ASIO_SVC_T>(std::move(other)) + { + } + + /// Move-assign a serial_port from another. + /** + * This assignment operator moves a serial port from one object to another. + * + * @param other The other serial_port 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 serial_port(io_context&) constructor. + */ + serial_port& operator=(serial_port&& other) + { + basic_io_object<ASIO_SVC_T>::operator=(std::move(other)); + return *this; + } +#endif // defined(ASIO_HAS_MOVE) || defined(GENERATING_DOCUMENTATION) + + /// Destroys the serial port. + /** + * This function destroys the serial port, cancelling any outstanding + * asynchronous wait operations associated with the serial port as if by + * calling @c cancel. + */ + ~serial_port() + { + } + +#if !defined(ASIO_NO_DEPRECATED) + /// (Deprecated: Use get_executor().) Get the io_context associated with the + /// object. + /** + * This function may be used to obtain the io_context object that the I/O + * object uses to dispatch handlers for asynchronous operations. + * + * @return A reference to the io_context object that the I/O object will use + * to dispatch handlers. Ownership is not transferred to the caller. + */ + asio::io_context& get_io_context() + { + return basic_io_object<ASIO_SVC_T>::get_io_context(); + } + + /// (Deprecated: Use get_executor().) Get the io_context associated with the + /// object. + /** + * This function may be used to obtain the io_context object that the I/O + * object uses to dispatch handlers for asynchronous operations. + * + * @return A reference to the io_context object that the I/O object will use + * to dispatch handlers. Ownership is not transferred to the caller. + */ + asio::io_context& get_io_service() + { + return basic_io_object<ASIO_SVC_T>::get_io_service(); + } +#endif // !defined(ASIO_NO_DEPRECATED) + + /// Get the executor associated with the object. + executor_type get_executor() ASIO_NOEXCEPT + { + return basic_io_object<ASIO_SVC_T>::get_executor(); + } + + /// Get a reference to the lowest layer. + /** + * This function returns a reference to the lowest layer in a stack of + * layers. Since a serial_port cannot contain any further layers, it simply + * returns a reference to itself. + * + * @return A reference to the lowest layer in the stack of layers. Ownership + * is not transferred to the caller. + */ + lowest_layer_type& lowest_layer() + { + return *this; + } + + /// Get a const reference to the lowest layer. + /** + * This function returns a const reference to the lowest layer in a stack of + * layers. Since a serial_port cannot contain any further layers, it simply + * returns a reference to itself. + * + * @return A const reference to the lowest layer in the stack of layers. + * Ownership is not transferred to the caller. + */ + const lowest_layer_type& lowest_layer() const + { + return *this; + } + + /// Open the serial port using the specified device name. + /** + * This function opens the serial port for the specified device name. + * + * @param device The platform-specific device name. + * + * @throws asio::system_error Thrown on failure. + */ + void open(const std::string& device) + { + asio::error_code ec; + this->get_service().open(this->get_implementation(), device, ec); + asio::detail::throw_error(ec, "open"); + } + + /// Open the serial port using the specified device name. + /** + * This function opens the serial port using the given platform-specific + * device name. + * + * @param device The platform-specific device name. + * + * @param ec Set the indicate what error occurred, if any. + */ + ASIO_SYNC_OP_VOID open(const std::string& device, + asio::error_code& ec) + { + this->get_service().open(this->get_implementation(), device, ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Assign an existing native serial port to the serial port. + /* + * This function opens the serial port to hold an existing native serial port. + * + * @param native_serial_port A native serial port. + * + * @throws asio::system_error Thrown on failure. + */ + void assign(const native_handle_type& native_serial_port) + { + asio::error_code ec; + this->get_service().assign(this->get_implementation(), + native_serial_port, ec); + asio::detail::throw_error(ec, "assign"); + } + + /// Assign an existing native serial port to the serial port. + /* + * This function opens the serial port to hold an existing native serial port. + * + * @param native_serial_port A native serial port. + * + * @param ec Set to indicate what error occurred, if any. + */ + ASIO_SYNC_OP_VOID assign(const native_handle_type& native_serial_port, + asio::error_code& ec) + { + this->get_service().assign(this->get_implementation(), + native_serial_port, ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Determine whether the serial port is open. + bool is_open() const + { + return this->get_service().is_open(this->get_implementation()); + } + + /// Close the serial port. + /** + * This function is used to close the serial port. Any asynchronous read or + * write operations will be cancelled immediately, and will complete with the + * asio::error::operation_aborted error. + * + * @throws asio::system_error Thrown on failure. + */ + void close() + { + asio::error_code ec; + this->get_service().close(this->get_implementation(), ec); + asio::detail::throw_error(ec, "close"); + } + + /// Close the serial port. + /** + * This function is used to close the serial port. Any asynchronous read or + * write operations will be cancelled immediately, and will complete with the + * asio::error::operation_aborted error. + * + * @param ec Set to indicate what error occurred, if any. + */ + ASIO_SYNC_OP_VOID close(asio::error_code& ec) + { + this->get_service().close(this->get_implementation(), ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Get the native serial port representation. + /** + * This function may be used to obtain the underlying representation of the + * serial port. This is intended to allow access to native serial port + * functionality that is not otherwise provided. + */ + native_handle_type native_handle() + { + return this->get_service().native_handle(this->get_implementation()); + } + + /// Cancel all asynchronous operations associated with the serial port. + /** + * This function causes all outstanding asynchronous read or write operations + * to finish immediately, and the handlers for cancelled operations will be + * passed the asio::error::operation_aborted error. + * + * @throws asio::system_error Thrown on failure. + */ + void cancel() + { + asio::error_code ec; + this->get_service().cancel(this->get_implementation(), ec); + asio::detail::throw_error(ec, "cancel"); + } + + /// Cancel all asynchronous operations associated with the serial port. + /** + * This function causes all outstanding asynchronous read or write operations + * to finish immediately, and the handlers for cancelled operations will be + * passed the asio::error::operation_aborted error. + * + * @param ec Set to indicate what error occurred, if any. + */ + ASIO_SYNC_OP_VOID cancel(asio::error_code& ec) + { + this->get_service().cancel(this->get_implementation(), ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Send a break sequence to the serial port. + /** + * This function causes a break sequence of platform-specific duration to be + * sent out the serial port. + * + * @throws asio::system_error Thrown on failure. + */ + void send_break() + { + asio::error_code ec; + this->get_service().send_break(this->get_implementation(), ec); + asio::detail::throw_error(ec, "send_break"); + } + + /// Send a break sequence to the serial port. + /** + * This function causes a break sequence of platform-specific duration to be + * sent out the serial port. + * + * @param ec Set to indicate what error occurred, if any. + */ + ASIO_SYNC_OP_VOID send_break(asio::error_code& ec) + { + this->get_service().send_break(this->get_implementation(), ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Set an option on the serial port. + /** + * This function is used to set an option on the serial port. + * + * @param option The option value to be set on the serial port. + * + * @throws asio::system_error Thrown on failure. + * + * @sa SettableSerialPortOption @n + * asio::serial_port_base::baud_rate @n + * asio::serial_port_base::flow_control @n + * asio::serial_port_base::parity @n + * asio::serial_port_base::stop_bits @n + * asio::serial_port_base::character_size + */ + template <typename SettableSerialPortOption> + void set_option(const SettableSerialPortOption& option) + { + asio::error_code ec; + this->get_service().set_option(this->get_implementation(), option, ec); + asio::detail::throw_error(ec, "set_option"); + } + + /// Set an option on the serial port. + /** + * This function is used to set an option on the serial port. + * + * @param option The option value to be set on the serial port. + * + * @param ec Set to indicate what error occurred, if any. + * + * @sa SettableSerialPortOption @n + * asio::serial_port_base::baud_rate @n + * asio::serial_port_base::flow_control @n + * asio::serial_port_base::parity @n + * asio::serial_port_base::stop_bits @n + * asio::serial_port_base::character_size + */ + template <typename SettableSerialPortOption> + ASIO_SYNC_OP_VOID set_option(const SettableSerialPortOption& option, + asio::error_code& ec) + { + this->get_service().set_option(this->get_implementation(), option, ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Get an option from the serial port. + /** + * This function is used to get the current value of an option on the serial + * port. + * + * @param option The option value to be obtained from the serial port. + * + * @throws asio::system_error Thrown on failure. + * + * @sa GettableSerialPortOption @n + * asio::serial_port_base::baud_rate @n + * asio::serial_port_base::flow_control @n + * asio::serial_port_base::parity @n + * asio::serial_port_base::stop_bits @n + * asio::serial_port_base::character_size + */ + template <typename GettableSerialPortOption> + void get_option(GettableSerialPortOption& option) + { + asio::error_code ec; + this->get_service().get_option(this->get_implementation(), option, ec); + asio::detail::throw_error(ec, "get_option"); + } + + /// Get an option from the serial port. + /** + * This function is used to get the current value of an option on the serial + * port. + * + * @param option The option value to be obtained from the serial port. + * + * @param ec Set to indicate what error occurred, if any. + * + * @sa GettableSerialPortOption @n + * asio::serial_port_base::baud_rate @n + * asio::serial_port_base::flow_control @n + * asio::serial_port_base::parity @n + * asio::serial_port_base::stop_bits @n + * asio::serial_port_base::character_size + */ + template <typename GettableSerialPortOption> + ASIO_SYNC_OP_VOID get_option(GettableSerialPortOption& option, + asio::error_code& ec) + { + this->get_service().get_option(this->get_implementation(), option, ec); + ASIO_SYNC_OP_VOID_RETURN(ec); + } + + /// Write some data to the serial port. + /** + * This function is used to write data to the serial port. The function call + * will block until one or more bytes of the data has been written + * successfully, or until an error occurs. + * + * @param buffers One or more data buffers to be written to the serial port. + * + * @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 operation may not transmit all of the data to the + * peer. Consider using the @ref write 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 + * serial_port.write_some(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(const ConstBufferSequence& buffers) + { + asio::error_code ec; + std::size_t s = this->get_service().write_some( + this->get_implementation(), buffers, ec); + asio::detail::throw_error(ec, "write_some"); + return s; + } + + /// Write some data to the serial port. + /** + * This function is used to write data to the serial port. The function call + * will block until one or more bytes of the data has been written + * successfully, or until an error occurs. + * + * @param buffers One or more data buffers to be written to the serial port. + * + * @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 function if you need to ensure that + * all data is written before the blocking operation completes. + */ + template <typename ConstBufferSequence> + std::size_t write_some(const ConstBufferSequence& buffers, + asio::error_code& ec) + { + return this->get_service().write_some( + this->get_implementation(), buffers, ec); + } + + /// Start an asynchronous write. + /** + * This function is used to asynchronously write data to the serial port. + * The function call always returns immediately. + * + * @param buffers One or more data buffers to be written to the serial port. + * 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 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 + * serial_port.async_write_some(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(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; + + async_completion<WriteHandler, + void (asio::error_code, std::size_t)> init(handler); + + this->get_service().async_write_some( + this->get_implementation(), buffers, init.completion_handler); + + return init.result.get(); + } + + /// Read some data from the serial port. + /** + * This function is used to read data from the serial port. The function + * call will block until one or more bytes of data has been read successfully, + * or until an error occurs. + * + * @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 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 + * serial_port.read_some(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(const MutableBufferSequence& buffers) + { + asio::error_code ec; + std::size_t s = this->get_service().read_some( + this->get_implementation(), buffers, ec); + asio::detail::throw_error(ec, "read_some"); + return s; + } + + /// Read some data from the serial port. + /** + * This function is used to read data from the serial port. The function + * call will block until one or more bytes of data has been read successfully, + * or until an error occurs. + * + * @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 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(const MutableBufferSequence& buffers, + asio::error_code& ec) + { + return this->get_service().read_some( + this->get_implementation(), buffers, ec); + } + + /// Start an asynchronous read. + /** + * This function is used to asynchronously read data from the serial port. + * The function call always returns immediately. + * + * @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 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 + * serial_port.async_read_some(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(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; + + async_completion<ReadHandler, + void (asio::error_code, std::size_t)> init(handler); + + this->get_service().async_read_some( + this->get_implementation(), buffers, init.completion_handler); + + return init.result.get(); + } +}; +#endif // defined(ASIO_ENABLE_OLD_SERVICES) + +} // namespace asio + +#include "asio/detail/pop_options.hpp" + +#if !defined(ASIO_ENABLE_OLD_SERVICES) +# undef ASIO_SVC_T +#endif // !defined(ASIO_ENABLE_OLD_SERVICES) + +#endif // defined(ASIO_HAS_SERIAL_PORT) + // || defined(GENERATING_DOCUMENTATION) + +#endif // ASIO_SERIAL_PORT_HPP |