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ACE_WIN32_Asynch_Write_Dgram Class Reference

This class is a factory for starting off asynchronous writes on a UDP socket. More...

#include <WIN32_Asynch_IO.h>

Inheritance diagram for ACE_WIN32_Asynch_Write_Dgram:

Inheritance graph
Collaboration diagram for ACE_WIN32_Asynch_Write_Dgram:

Collaboration graph
List of all members.

Public Methods

 ACE_WIN32_Asynch_Write_Dgram (ACE_WIN32_Proactor *win32_proactor)

virtual ~ACE_WIN32_Asynch_Write_Dgram (void)

virtual ssize_t send (ACE_Message_Block *message_block, size_t &number_of_bytes_sent, int flags, const ACE_Addr &addr, const void *act, int priority, int signal_number)
int open (ACE_Handler &handler, ACE_HANDLE handle, const void *completion_key, ACE_Proactor *proactor)
int cancel (void)
ACE_Proactorproactor (void) const
 Return the underlying proactor.

Protected Methods

 ACE_WIN32_Asynch_Write_Dgram (void)
 Do-nothing constructor.

Detailed Description

This class is a factory for starting off asynchronous writes on a UDP socket.

Once <open> is called, multiple asynchronous <writes>s can started using this class. A ACE_Asynch_Write_Stream::Result will be passed back to the <handler> when the asynchronous write completes through the <ACE_Handler::handle_write_stream> callback.

Constructor & Destructor Documentation

ACE_WIN32_Asynch_Write_Dgram::ACE_WIN32_Asynch_Write_Dgram ACE_WIN32_Proactor   win32_proactor


ACE_WIN32_Asynch_Write_Dgram::~ACE_WIN32_Asynch_Write_Dgram void    [virtual]


ACE_WIN32_Asynch_Write_Dgram::ACE_WIN32_Asynch_Write_Dgram void    [protected]

Do-nothing constructor.

Member Function Documentation

int ACE_WIN32_Asynch_Write_Dgram::cancel void    [virtual]

This cancels all pending accepts operations that were issued by the calling thread. The function does not cancel asynchronous operations issued by other threads.

Reimplemented from ACE_WIN32_Asynch_Operation.

int ACE_WIN32_Asynch_Write_Dgram::open ACE_Handler   handler,
ACE_HANDLE    handle,
const void *    completion_key,
ACE_Proactor   proactor

Initializes the factory with information which will be used with each asynchronous call. If (<handle> == ACE_INVALID_HANDLE), <ACE_Handler::handle> will be called on the <handler> to get the correct handle.

Reimplemented from ACE_WIN32_Asynch_Operation.

ACE_Proactor * ACE_WIN32_Asynch_Write_Dgram::proactor void    const [virtual]

Return the underlying proactor.

Reimplemented from ACE_WIN32_Asynch_Operation.

ssize_t ACE_WIN32_Asynch_Write_Dgram::send ACE_Message_Block   message_block,
size_t &    number_of_bytes_sent,
int    flags,
const ACE_Addr   addr,
const void *    act,
int    priority,
int    signal_number

This starts off an asynchronous send. Upto <message_block->total_length()> will be sent. <message_block>'s <rd_ptr> will be updated to reflect the sent bytes if the send operation is successfully completed. Return code of 1 means immediate success and <number_of_bytes_sent> is updated to number of bytes sent. The <ACE_Handler::handle_write_dgram> method will still be called. Return code of 0 means the IO will complete proactively. Return code of -1 means there was an error, use errno to get the error code.

Scatter/gather is supported on WIN32 by using the <message_block->cont()> method. Up to ACE_IOV_MAX <message_block>'s are supported. Upto <message_block->length()> bytes will be sent from each <message block> for a total of <message_block->total_length()> bytes. All <message_block>'s <rd_ptr>'s will be updated to reflect the bytes sent from each <message_block>.

Implements ACE_Asynch_Write_Dgram_Impl.

The documentation for this class was generated from the following files:
Generated on Wed Jan 14 22:50:47 2004 for ACE by doxygen1.2.18