ACE_POSIX_Asynch_Read_File Class Reference

This class is a factory for starting off asynchronous reads on a file. This class implements <ACE_Asynch_Read_File> for all POSIX implementations of Proactor. More...

#include <POSIX_Asynch_IO.h>

Inheritance diagram for ACE_POSIX_Asynch_Read_File:

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Collaboration diagram for ACE_POSIX_Asynch_Read_File:

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List of all members.

Public Member Functions

 ACE_POSIX_Asynch_Read_File (ACE_POSIX_Proactor *posix_proactor)
 Constructor.
int read (ACE_Message_Block &message_block, size_t bytes_to_read, u_long offset, u_long offset_high, const void *act, int priority, int signal_number=0)
virtual ~ACE_POSIX_Asynch_Read_File (void)
 Destructor.

Private Member Functions

int read (ACE_Message_Block &message_block, size_t bytes_to_read, const void *act, int priority, int signal_number=0)

Detailed Description

This class is a factory for starting off asynchronous reads on a file. This class implements <ACE_Asynch_Read_File> for all POSIX implementations of Proactor.

Once <open> is called, multiple asynchronous <read>s can started using this class. A <ACE_Asynch_Read_File::Result> will be passed back to the <handler> when the asynchronous reads completes through the <ACE_Handler::handle_read_file> callback.

This class differs slightly from <ACE_Asynch_Read_Stream> as it allows the user to specify an offset for the read.


Constructor & Destructor Documentation

ACE_POSIX_Asynch_Read_File::ACE_POSIX_Asynch_Read_File ACE_POSIX_Proactor posix_proactor  ) 
 

Constructor.

ACE_POSIX_Asynch_Read_File::~ACE_POSIX_Asynch_Read_File void   )  [virtual]
 

Destructor.


Member Function Documentation

int ACE_POSIX_Asynch_Read_File::read ACE_Message_Block message_block,
size_t  bytes_to_read,
const void *  act,
int  priority,
int  signal_number = 0
[private, virtual]
 

This belongs to ACE_POSIX_Asynch_Read_Stream. We have defined this here to avoid compiler warnings and forward the method to <ACE_POSIX_Asynch_Read_Stream::read>.

Implements ACE_Asynch_Read_File_Impl.

int ACE_POSIX_Asynch_Read_File::read ACE_Message_Block message_block,
size_t  bytes_to_read,
u_long  offset,
u_long  offset_high,
const void *  act,
int  priority,
int  signal_number = 0
[virtual]
 

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

Implements ACE_Asynch_Read_File_Impl.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 15:49:44 2005 for ACE by  doxygen 1.4.5