ACE_WIN32_Asynch_Write_File Class Reference

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

#include <WIN32_Asynch_IO.h>

Inheritance diagram for ACE_WIN32_Asynch_Write_File:

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Collaboration diagram for ACE_WIN32_Asynch_Write_File:

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List of all members.

Public Member Functions

 ACE_WIN32_Asynch_Write_File (ACE_WIN32_Proactor *win32_proactor)
 Constructor.
int write (ACE_Message_Block &message_block, size_t bytes_to_write, u_long offset, u_long offset_high, const void *act, int priority, int signal_number=0)
int writev (ACE_Message_Block &message_block, size_t bytes_to_write, u_long offset, u_long offset_high, const void *act, int priority, int signal_number=0)
virtual ~ACE_WIN32_Asynch_Write_File (void)
 Destrcutor.
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.

Private Member Functions

int write (ACE_Message_Block &message_block, size_t bytes_to_write, const void *act, int priority, int signal_number=0)
int writev (ACE_Message_Block &message_block, size_t bytes_to_write, const void *act, int priority, int signal_number=0)

Detailed Description

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

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


Constructor & Destructor Documentation

ACE_WIN32_Asynch_Write_File::ACE_WIN32_Asynch_Write_File ACE_WIN32_Proactor win32_proactor  ) 
 

Constructor.

ACE_WIN32_Asynch_Write_File::~ACE_WIN32_Asynch_Write_File void   )  [virtual]
 

Destrcutor.


Member Function Documentation

int ACE_WIN32_Asynch_Write_File::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_Write_Stream.

int ACE_WIN32_Asynch_Write_File::open ACE_Handler handler,
ACE_HANDLE  handle,
const void *  completion_key,
ACE_Proactor proactor
[virtual]
 

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_Write_Stream.

ACE_Proactor * ACE_WIN32_Asynch_Write_File::proactor void   )  const [virtual]
 

Return the underlying proactor.

Reimplemented from ACE_WIN32_Asynch_Write_Stream.

int ACE_WIN32_Asynch_Write_File::write ACE_Message_Block message_block,
size_t  bytes_to_write,
const void *  act,
int  priority,
int  signal_number = 0
[private, virtual]
 

This method belongs to ACE_WIN32_Asynch_Write_Stream. It is here to avoid compiler warnings. This method is forwarded to the ACE_WIN32_Asynch_Write_Stream class.

Implements ACE_Asynch_Write_File_Impl.

int ACE_WIN32_Asynch_Write_File::write ACE_Message_Block message_block,
size_t  bytes_to_write,
u_long  offset,
u_long  offset_high,
const void *  act,
int  priority,
int  signal_number = 0
[virtual]
 

This starts off an asynchronous write. Upto <bytes_to_write> will be write and stored in the <message_block>. The write will start at <offset> from the beginning of the file.

Implements ACE_Asynch_Write_File_Impl.

int ACE_WIN32_Asynch_Write_File::writev ACE_Message_Block message_block,
size_t  bytes_to_write,
const void *  act,
int  priority,
int  signal_number = 0
[private, virtual]
 

Same as above but with gather support, through chaining of composite message blocks using the continuation field.

Implements ACE_Asynch_Write_File_Impl.

int ACE_WIN32_Asynch_Write_File::writev ACE_Message_Block message_block,
size_t  bytes_to_write,
u_long  offset,
u_long  offset_high,
const void *  act,
int  priority,
int  signal_number = 0
[virtual]
 

Same as above but with gather support, through chaining of composite message blocks using the continuation field. NOTE: Each data block payload must be at least the size of a system memory page and must be aligned on a system memory page size boundary

Implements ACE_Asynch_Write_File_Impl.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 15:51:35 2005 for ACE by  doxygen 1.4.5