516 lines
20 KiB
C++
516 lines
20 KiB
C++
//
|
|
// write.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 ASIO_WRITE_HPP
|
|
#define ASIO_WRITE_HPP
|
|
|
|
#if defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
# pragma once
|
|
#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
|
|
|
|
#include "asio/detail/push_options.hpp"
|
|
|
|
#include "asio/detail/push_options.hpp"
|
|
#include <cstddef>
|
|
#include <boost/config.hpp>
|
|
#include "asio/detail/pop_options.hpp"
|
|
|
|
#include "asio/basic_streambuf.hpp"
|
|
#include "asio/error.hpp"
|
|
|
|
namespace asio {
|
|
|
|
/**
|
|
* @defgroup write asio::write
|
|
*/
|
|
/*@{*/
|
|
|
|
/// Write all of the supplied data to a stream before returning.
|
|
/**
|
|
* This function is used to write a certain number of bytes of data to a stream.
|
|
* The call will block until one of the following conditions is true:
|
|
*
|
|
* @li All of the data in the supplied buffers has been written. That is, the
|
|
* bytes transferred is equal to the sum of the buffer sizes.
|
|
*
|
|
* @li An error occurred.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the SyncWriteStream concept.
|
|
*
|
|
* @param buffers One or more buffers containing the data to be written. The sum
|
|
* of the buffer sizes indicates the maximum number of bytes to write to the
|
|
* stream.
|
|
*
|
|
* @returns The number of bytes transferred.
|
|
*
|
|
* @throws asio::system_error Thrown on failure.
|
|
*
|
|
* @par Example
|
|
* To write a single data buffer use the @ref buffer function as follows:
|
|
* @code asio::write(s, 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.
|
|
*
|
|
* @note This overload is equivalent to calling:
|
|
* @code asio::write(
|
|
* s, buffers,
|
|
* asio::transfer_all()); @endcode
|
|
*/
|
|
template <typename SyncWriteStream, typename ConstBufferSequence>
|
|
std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers);
|
|
|
|
/// Write a certain amount of data to a stream before returning.
|
|
/**
|
|
* This function is used to write a certain number of bytes of data to a stream.
|
|
* The call will block until one of the following conditions is true:
|
|
*
|
|
* @li All of the data in the supplied buffers has been written. That is, the
|
|
* bytes transferred is equal to the sum of the buffer sizes.
|
|
*
|
|
* @li The completion_condition function object returns true.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the SyncWriteStream concept.
|
|
*
|
|
* @param buffers One or more buffers containing the data to be written. The sum
|
|
* of the buffer sizes indicates the maximum number of bytes to write to the
|
|
* stream.
|
|
*
|
|
* @param completion_condition The function object to be called to determine
|
|
* whether the write operation is complete. The signature of the function object
|
|
* must be:
|
|
* @code bool completion_condition(
|
|
* const asio::error_code& error, // Result of latest write_some
|
|
* // operation.
|
|
*
|
|
* std::size_t bytes_transferred // Number of bytes transferred
|
|
* // so far.
|
|
* ); @endcode
|
|
* A return value of true indicates that the write operation is complete. False
|
|
* indicates that further calls to the stream's write_some function are
|
|
* required.
|
|
*
|
|
* @returns The number of bytes transferred.
|
|
*
|
|
* @throws asio::system_error Thrown on failure.
|
|
*
|
|
* @par Example
|
|
* To write a single data buffer use the @ref buffer function as follows:
|
|
* @code asio::write(s, asio::buffer(data, size),
|
|
* asio::transfer_at_least(32)); @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 SyncWriteStream, typename ConstBufferSequence,
|
|
typename CompletionCondition>
|
|
std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
|
|
CompletionCondition completion_condition);
|
|
|
|
/// Write a certain amount of data to a stream before returning.
|
|
/**
|
|
* This function is used to write a certain number of bytes of data to a stream.
|
|
* The call will block until one of the following conditions is true:
|
|
*
|
|
* @li All of the data in the supplied buffers has been written. That is, the
|
|
* bytes transferred is equal to the sum of the buffer sizes.
|
|
*
|
|
* @li The completion_condition function object returns true.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the SyncWriteStream concept.
|
|
*
|
|
* @param buffers One or more buffers containing the data to be written. The sum
|
|
* of the buffer sizes indicates the maximum number of bytes to write to the
|
|
* stream.
|
|
*
|
|
* @param completion_condition The function object to be called to determine
|
|
* whether the write operation is complete. The signature of the function object
|
|
* must be:
|
|
* @code bool completion_condition(
|
|
* const asio::error_code& error, // Result of latest write_some
|
|
* // operation.
|
|
*
|
|
* std::size_t bytes_transferred // Number of bytes transferred
|
|
* // so far.
|
|
* ); @endcode
|
|
* A return value of true indicates that the write operation is complete. False
|
|
* indicates that further calls to the stream's write_some function are
|
|
* required.
|
|
*
|
|
* @param ec Set to indicate what error occurred, if any.
|
|
*
|
|
* @returns The number of bytes written. If an error occurs, returns the total
|
|
* number of bytes successfully transferred prior to the error.
|
|
*/
|
|
template <typename SyncWriteStream, typename ConstBufferSequence,
|
|
typename CompletionCondition>
|
|
std::size_t write(SyncWriteStream& s, const ConstBufferSequence& buffers,
|
|
CompletionCondition completion_condition, asio::error_code& ec);
|
|
|
|
/// Write a certain amount of data to a stream before returning.
|
|
/**
|
|
* This function is used to write a certain number of bytes of data to a stream.
|
|
* The call will block until one of the following conditions is true:
|
|
*
|
|
* @li All of the data in the supplied basic_streambuf has been written.
|
|
*
|
|
* @li An error occurred.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the SyncWriteStream concept.
|
|
*
|
|
* @param b The basic_streambuf object from which data will be written.
|
|
*
|
|
* @returns The number of bytes transferred.
|
|
*
|
|
* @throws asio::system_error Thrown on failure.
|
|
*
|
|
* @note This overload is equivalent to calling:
|
|
* @code asio::write(
|
|
* s, b,
|
|
* asio::transfer_all()); @endcode
|
|
*/
|
|
template <typename SyncWriteStream, typename Allocator>
|
|
std::size_t write(SyncWriteStream& s, basic_streambuf<Allocator>& b);
|
|
|
|
/// Write a certain amount of data to a stream before returning.
|
|
/**
|
|
* This function is used to write a certain number of bytes of data to a stream.
|
|
* The call will block until one of the following conditions is true:
|
|
*
|
|
* @li All of the data in the supplied basic_streambuf has been written.
|
|
*
|
|
* @li The completion_condition function object returns true.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the SyncWriteStream concept.
|
|
*
|
|
* @param b The basic_streambuf object from which data will be written.
|
|
*
|
|
* @param completion_condition The function object to be called to determine
|
|
* whether the write operation is complete. The signature of the function object
|
|
* must be:
|
|
* @code bool completion_condition(
|
|
* const asio::error_code& error, // Result of latest write_some
|
|
* // operation.
|
|
*
|
|
* std::size_t bytes_transferred // Number of bytes transferred
|
|
* // so far.
|
|
* ); @endcode
|
|
* A return value of true indicates that the write operation is complete. False
|
|
* indicates that further calls to the stream's write_some function are
|
|
* required.
|
|
*
|
|
* @returns The number of bytes transferred.
|
|
*
|
|
* @throws asio::system_error Thrown on failure.
|
|
*/
|
|
template <typename SyncWriteStream, typename Allocator,
|
|
typename CompletionCondition>
|
|
std::size_t write(SyncWriteStream& s, basic_streambuf<Allocator>& b,
|
|
CompletionCondition completion_condition);
|
|
|
|
/// Write a certain amount of data to a stream before returning.
|
|
/**
|
|
* This function is used to write a certain number of bytes of data to a stream.
|
|
* The call will block until one of the following conditions is true:
|
|
*
|
|
* @li All of the data in the supplied basic_streambuf has been written.
|
|
*
|
|
* @li The completion_condition function object returns true.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the SyncWriteStream concept.
|
|
*
|
|
* @param b The basic_streambuf object from which data will be written.
|
|
*
|
|
* @param completion_condition The function object to be called to determine
|
|
* whether the write operation is complete. The signature of the function object
|
|
* must be:
|
|
* @code bool completion_condition(
|
|
* const asio::error_code& error, // Result of latest write_some
|
|
* // operation.
|
|
*
|
|
* std::size_t bytes_transferred // Number of bytes transferred
|
|
* // so far.
|
|
* ); @endcode
|
|
* A return value of true indicates that the write operation is complete. False
|
|
* indicates that further calls to the stream's write_some function are
|
|
* required.
|
|
*
|
|
* @param ec Set to indicate what error occurred, if any.
|
|
*
|
|
* @returns The number of bytes written. If an error occurs, returns the total
|
|
* number of bytes successfully transferred prior to the error.
|
|
*/
|
|
template <typename SyncWriteStream, typename Allocator,
|
|
typename CompletionCondition>
|
|
std::size_t write(SyncWriteStream& s, basic_streambuf<Allocator>& b,
|
|
CompletionCondition completion_condition, asio::error_code& ec);
|
|
|
|
/*@}*/
|
|
/**
|
|
* @defgroup async_write asio::async_write
|
|
*/
|
|
/*@{*/
|
|
|
|
/// Start an asynchronous operation to write of all of the supplied data to a
|
|
/// stream.
|
|
/**
|
|
* This function is used to asynchronously write a certain number of bytes of
|
|
* data to a stream. The function call always returns immediately. The
|
|
* asynchronous operation will continue until one of the following conditions
|
|
* is true:
|
|
*
|
|
* @li All of the data in the supplied buffers has been written. That is, the
|
|
* bytes transferred is equal to the sum of the buffer sizes.
|
|
*
|
|
* @li An error occurred.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* async_write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the AsyncWriteStream concept.
|
|
*
|
|
* @param buffers One or more buffers containing the data to be written.
|
|
* 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 from the
|
|
* // buffers. If an error occurred,
|
|
* // this will be less than the sum
|
|
* // of the buffer sizes.
|
|
* ); @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_service::post().
|
|
*
|
|
* @par Example
|
|
* To write a single data buffer use the @ref buffer function as follows:
|
|
* @code
|
|
* asio::async_write(s, 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 AsyncWriteStream, typename ConstBufferSequence,
|
|
typename WriteHandler>
|
|
void async_write(AsyncWriteStream& s, const ConstBufferSequence& buffers,
|
|
WriteHandler handler);
|
|
|
|
/// Start an asynchronous operation to write a certain amount of data to a
|
|
/// stream.
|
|
/**
|
|
* This function is used to asynchronously write a certain number of bytes of
|
|
* data to a stream. The function call always returns immediately. The
|
|
* asynchronous operation will continue until one of the following conditions
|
|
* is true:
|
|
*
|
|
* @li All of the data in the supplied buffers has been written. That is, the
|
|
* bytes transferred is equal to the sum of the buffer sizes.
|
|
*
|
|
* @li The completion_condition function object returns true.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* async_write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the AsyncWriteStream concept.
|
|
*
|
|
* @param buffers One or more buffers containing the data to be written.
|
|
* 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 completion_condition The function object to be called to determine
|
|
* whether the write operation is complete. The signature of the function object
|
|
* must be:
|
|
* @code bool completion_condition(
|
|
* const asio::error_code& error, // Result of latest write_some
|
|
* // operation.
|
|
*
|
|
* std::size_t bytes_transferred // Number of bytes transferred
|
|
* // so far.
|
|
* ); @endcode
|
|
* A return value of true indicates that the write operation is complete. False
|
|
* indicates that further calls to the stream's async_write_some function are
|
|
* required.
|
|
*
|
|
* @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 from the
|
|
* // buffers. If an error occurred,
|
|
* // this will be less than the sum
|
|
* // of the buffer sizes.
|
|
* ); @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_service::post().
|
|
*
|
|
* @par Example
|
|
* To write a single data buffer use the @ref buffer function as follows:
|
|
* @code asio::async_write(s,
|
|
* asio::buffer(data, size),
|
|
* asio::transfer_at_least(32),
|
|
* 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 AsyncWriteStream, typename ConstBufferSequence,
|
|
typename CompletionCondition, typename WriteHandler>
|
|
void async_write(AsyncWriteStream& s, const ConstBufferSequence& buffers,
|
|
CompletionCondition completion_condition, WriteHandler handler);
|
|
|
|
/// Start an asynchronous operation to write a certain amount of data to a
|
|
/// stream.
|
|
/**
|
|
* This function is used to asynchronously write a certain number of bytes of
|
|
* data to a stream. The function call always returns immediately. The
|
|
* asynchronous operation will continue until one of the following conditions
|
|
* is true:
|
|
*
|
|
* @li All of the data in the supplied basic_streambuf has been written.
|
|
*
|
|
* @li An error occurred.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* async_write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the AsyncWriteStream concept.
|
|
*
|
|
* @param b A basic_streambuf object from which data will be written. Ownership
|
|
* of the streambuf is retained by the caller, which must guarantee that it
|
|
* remains 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 from the
|
|
* // buffers. If an error occurred,
|
|
* // this will be less than the sum
|
|
* // of the buffer sizes.
|
|
* ); @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_service::post().
|
|
*/
|
|
template <typename AsyncWriteStream, typename Allocator, typename WriteHandler>
|
|
void async_write(AsyncWriteStream& s, basic_streambuf<Allocator>& b,
|
|
WriteHandler handler);
|
|
|
|
/// Start an asynchronous operation to write a certain amount of data to a
|
|
/// stream.
|
|
/**
|
|
* This function is used to asynchronously write a certain number of bytes of
|
|
* data to a stream. The function call always returns immediately. The
|
|
* asynchronous operation will continue until one of the following conditions
|
|
* is true:
|
|
*
|
|
* @li All of the data in the supplied basic_streambuf has been written.
|
|
*
|
|
* @li The completion_condition function object returns true.
|
|
*
|
|
* This operation is implemented in terms of one or more calls to the stream's
|
|
* async_write_some function.
|
|
*
|
|
* @param s The stream to which the data is to be written. The type must support
|
|
* the AsyncWriteStream concept.
|
|
*
|
|
* @param b A basic_streambuf object from which data will be written. Ownership
|
|
* of the streambuf is retained by the caller, which must guarantee that it
|
|
* remains valid until the handler is called.
|
|
*
|
|
* @param completion_condition The function object to be called to determine
|
|
* whether the write operation is complete. The signature of the function object
|
|
* must be:
|
|
* @code bool completion_condition(
|
|
* const asio::error_code& error, // Result of latest write_some
|
|
* // operation.
|
|
*
|
|
* std::size_t bytes_transferred // Number of bytes transferred
|
|
* // so far.
|
|
* ); @endcode
|
|
* A return value of true indicates that the write operation is complete. False
|
|
* indicates that further calls to the stream's async_write_some function are
|
|
* required.
|
|
*
|
|
* @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 from the
|
|
* // buffers. If an error occurred,
|
|
* // this will be less than the sum
|
|
* // of the buffer sizes.
|
|
* ); @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_service::post().
|
|
*/
|
|
template <typename AsyncWriteStream, typename Allocator,
|
|
typename CompletionCondition, typename WriteHandler>
|
|
void async_write(AsyncWriteStream& s, basic_streambuf<Allocator>& b,
|
|
CompletionCondition completion_condition, WriteHandler handler);
|
|
|
|
/*@}*/
|
|
|
|
} // namespace asio
|
|
|
|
#include "asio/impl/write.ipp"
|
|
|
|
#include "asio/detail/pop_options.hpp"
|
|
|
|
#endif // ASIO_WRITE_HPP
|