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asio::buffered_write_stream< Stream > Class Template Reference

Inherits noncopyable.

Inheritance diagram for asio::buffered_write_stream< Stream >:

Inheritance graph
List of all members.

Detailed Description

template<typename Stream>
class asio::buffered_write_stream< Stream >

Adds buffering to the write-related operations of a stream.

The buffered_write_stream class template can be used to add buffering to the synchronous and asynchronous write operations of a stream.

Thread Safety:
Distinct objects: Safe.
Shared objects: Unsafe.
Concepts:
Async_Object, Async_Read_Stream, Async_Write_Stream, Error_Source, Stream, Sync_Read_Stream, Sync_Write_Stream.


Public Types

typedef boost::remove_reference<
Stream >::type 
next_layer_type
 The type of the next layer.
typedef next_layer_type::lowest_layer_type lowest_layer_type
 The type of the lowest layer.
typedef next_layer_type::error_type error_type
 The type used for reporting errors.

Public Member Functions

template<typename Arg>
 buffered_write_stream (Arg &a)
 Construct, passing the specified argument to initialise the next layer.
template<typename Arg>
 buffered_write_stream (Arg &a, std::size_t buffer_size)
 Construct, passing the specified argument to initialise the next layer.
next_layer_typenext_layer ()
 Get a reference to the next layer.
lowest_layer_typelowest_layer ()
 Get a reference to the lowest layer.
asio::io_serviceio_service ()
 Get the io_service associated with the object.
void close ()
 Close the stream.
template<typename Error_Handler>
void close (Error_Handler error_handler)
 Close the stream.
std::size_t flush ()
 Flush all data from the buffer to the next layer. Returns the number of bytes written to the next layer on the last write operation. Throws an exception on failure.
template<typename Error_Handler>
std::size_t flush (Error_Handler error_handler)
 Flush all data from the buffer to the next layer. Returns the number of bytes written to the next layer on the last write operation, or 0 if an error occurred and the error handler did not throw.
template<typename Handler>
void async_flush (Handler handler)
 Start an asynchronous flush.
template<typename Const_Buffers>
std::size_t write_some (const Const_Buffers &buffers)
 Write the given data to the stream. Returns the number of bytes written. Throws an exception on failure.
template<typename Const_Buffers, typename Error_Handler>
std::size_t write_some (const Const_Buffers &buffers, Error_Handler error_handler)
 Write the given data to the stream. Returns the number of bytes written, or 0 if an error occurred and the error handler did not throw.
template<typename Const_Buffers, typename Handler>
void async_write_some (const Const_Buffers &buffers, Handler handler)
 Start an asynchronous write. The data being written must be valid for the lifetime of the asynchronous operation.
template<typename Mutable_Buffers>
std::size_t read_some (const Mutable_Buffers &buffers)
 Read some data from the stream. Returns the number of bytes read. Throws an exception on failure.
template<typename Mutable_Buffers, typename Error_Handler>
std::size_t read_some (const Mutable_Buffers &buffers, Error_Handler error_handler)
 Read some data from the stream. Returns the number of bytes read or 0 if an error occurred and the error handler did not throw an exception.
template<typename Mutable_Buffers, typename Handler>
void async_read_some (const Mutable_Buffers &buffers, Handler handler)
 Start an asynchronous read. The buffer into which the data will be read must be valid for the lifetime of the asynchronous operation.
template<typename Mutable_Buffers>
std::size_t peek (const Mutable_Buffers &buffers)
 Peek at the incoming data on the stream. Returns the number of bytes read. Throws an exception on failure.
template<typename Mutable_Buffers, typename Error_Handler>
std::size_t peek (const Mutable_Buffers &buffers, Error_Handler error_handler)
 Peek at the incoming data on the stream. Returns the number of bytes read, or 0 if an error occurred and the error handler did not throw.
std::size_t in_avail ()
 Determine the amount of data that may be read without blocking.
template<typename Error_Handler>
std::size_t in_avail (Error_Handler error_handler)
 Determine the amount of data that may be read without blocking.

Static Public Attributes

static const std::size_t default_buffer_size = implementation_defined
 The default buffer size.

Private Member Functions

template<typename Const_Buffers>
std::size_t copy (const Const_Buffers &buffers)
 Copy data into the internal buffer from the specified source buffer. Returns the number of bytes copied.

Private Attributes

Stream next_layer_
 The next layer.


Member Typedef Documentation

template<typename Stream>
typedef boost::remove_reference<Stream>::type asio::buffered_write_stream< Stream >::next_layer_type

The type of the next layer.

template<typename Stream>
typedef next_layer_type::lowest_layer_type asio::buffered_write_stream< Stream >::lowest_layer_type

The type of the lowest layer.

template<typename Stream>
typedef next_layer_type::error_type asio::buffered_write_stream< Stream >::error_type

The type used for reporting errors.


Constructor & Destructor Documentation

template<typename Stream>
template<typename Arg>
asio::buffered_write_stream< Stream >::buffered_write_stream ( Arg &  a  )  [explicit]

Construct, passing the specified argument to initialise the next layer.

template<typename Stream>
template<typename Arg>
asio::buffered_write_stream< Stream >::buffered_write_stream ( Arg &  a,
std::size_t  buffer_size 
)

Construct, passing the specified argument to initialise the next layer.


Member Function Documentation

template<typename Stream>
next_layer_type& asio::buffered_write_stream< Stream >::next_layer (  ) 

Get a reference to the next layer.

template<typename Stream>
lowest_layer_type& asio::buffered_write_stream< Stream >::lowest_layer (  ) 

Get a reference to the lowest layer.

template<typename Stream>
asio::io_service& asio::buffered_write_stream< Stream >::io_service (  ) 

Get the io_service associated with the object.

template<typename Stream>
void asio::buffered_write_stream< Stream >::close (  ) 

Close the stream.

template<typename Stream>
template<typename Error_Handler>
void asio::buffered_write_stream< Stream >::close ( Error_Handler  error_handler  ) 

Close the stream.

template<typename Stream>
std::size_t asio::buffered_write_stream< Stream >::flush (  ) 

Flush all data from the buffer to the next layer. Returns the number of bytes written to the next layer on the last write operation. Throws an exception on failure.

template<typename Stream>
template<typename Error_Handler>
std::size_t asio::buffered_write_stream< Stream >::flush ( Error_Handler  error_handler  ) 

Flush all data from the buffer to the next layer. Returns the number of bytes written to the next layer on the last write operation, or 0 if an error occurred and the error handler did not throw.

template<typename Stream>
template<typename Handler>
void asio::buffered_write_stream< Stream >::async_flush ( Handler  handler  ) 

Start an asynchronous flush.

template<typename Stream>
template<typename Const_Buffers>
std::size_t asio::buffered_write_stream< Stream >::write_some ( const Const_Buffers buffers  ) 

Write the given data to the stream. Returns the number of bytes written. Throws an exception on failure.

template<typename Stream>
template<typename Const_Buffers, typename Error_Handler>
std::size_t asio::buffered_write_stream< Stream >::write_some ( const Const_Buffers buffers,
Error_Handler  error_handler 
)

Write the given data to the stream. Returns the number of bytes written, or 0 if an error occurred and the error handler did not throw.

template<typename Stream>
template<typename Const_Buffers, typename Handler>
void asio::buffered_write_stream< Stream >::async_write_some ( const Const_Buffers buffers,
Handler  handler 
)

Start an asynchronous write. The data being written must be valid for the lifetime of the asynchronous operation.

template<typename Stream>
template<typename Mutable_Buffers>
std::size_t asio::buffered_write_stream< Stream >::read_some ( const Mutable_Buffers buffers  ) 

Read some data from the stream. Returns the number of bytes read. Throws an exception on failure.

template<typename Stream>
template<typename Mutable_Buffers, typename Error_Handler>
std::size_t asio::buffered_write_stream< Stream >::read_some ( const Mutable_Buffers buffers,
Error_Handler  error_handler 
)

Read some data from the stream. Returns the number of bytes read or 0 if an error occurred and the error handler did not throw an exception.

template<typename Stream>
template<typename Mutable_Buffers, typename Handler>
void asio::buffered_write_stream< Stream >::async_read_some ( const Mutable_Buffers buffers,
Handler  handler 
)

Start an asynchronous read. The buffer into which the data will be read must be valid for the lifetime of the asynchronous operation.

template<typename Stream>
template<typename Mutable_Buffers>
std::size_t asio::buffered_write_stream< Stream >::peek ( const Mutable_Buffers buffers  ) 

Peek at the incoming data on the stream. Returns the number of bytes read. Throws an exception on failure.

template<typename Stream>
template<typename Mutable_Buffers, typename Error_Handler>
std::size_t asio::buffered_write_stream< Stream >::peek ( const Mutable_Buffers buffers,
Error_Handler  error_handler 
)

Peek at the incoming data on the stream. Returns the number of bytes read, or 0 if an error occurred and the error handler did not throw.

template<typename Stream>
std::size_t asio::buffered_write_stream< Stream >::in_avail (  ) 

Determine the amount of data that may be read without blocking.

template<typename Stream>
template<typename Error_Handler>
std::size_t asio::buffered_write_stream< Stream >::in_avail ( Error_Handler  error_handler  ) 

Determine the amount of data that may be read without blocking.

template<typename Stream>
template<typename Const_Buffers>
std::size_t asio::buffered_write_stream< Stream >::copy ( const Const_Buffers buffers  )  [private]

Copy data into the internal buffer from the specified source buffer. Returns the number of bytes copied.


Member Data Documentation

template<typename Stream>
const std::size_t asio::buffered_write_stream< Stream >::default_buffer_size = implementation_defined [static]

The default buffer size.

template<typename Stream>
Stream asio::buffered_write_stream< Stream >::next_layer_ [private]

The next layer.

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