ACE_Asynch_Read_File_Impl Class Reference

Abstract base class for all the concrete implementation classes that provide different implementations for the ACE_Asynch_Read_File::Result. More...

#include <Asynch_IO_Impl.h>

Inheritance diagram for ACE_Asynch_Read_File_Impl:

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Collaboration diagram for ACE_Asynch_Read_File_Impl:

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List of all members.

Public Member Functions

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

Protected Member Functions

 ACE_Asynch_Read_File_Impl (void)
 Do-nothing constructor.

Detailed Description

Abstract base class for all the concrete implementation classes that provide different implementations for the ACE_Asynch_Read_File::Result.


Constructor & Destructor Documentation

ACE_Asynch_Read_File_Impl::~ACE_Asynch_Read_File_Impl void   )  [virtual]
 

ACE_INLINE ACE_Asynch_Read_File_Impl::ACE_Asynch_Read_File_Impl void   )  [protected]
 

Do-nothing constructor.


Member Function Documentation

virtual int ACE_Asynch_Read_File_Impl::read ACE_Message_Block message_block,
size_t  bytes_to_read,
const void *  act,
int  priority,
int  signal_number
[pure virtual]
 

This starts off an asynchronous read. Upto <bytes_to_read> will be read and stored in the <message_block>.

Implements ACE_Asynch_Read_Stream_Impl.

Implemented in ACE_POSIX_Asynch_Read_File, and ACE_WIN32_Asynch_Read_File.

virtual int ACE_Asynch_Read_File_Impl::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
[pure 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.

Implemented in ACE_POSIX_Asynch_Read_File, and ACE_WIN32_Asynch_Read_File.

virtual int ACE_Asynch_Read_File_Impl::readv ACE_Message_Block message_block,
size_t  bytes_to_read,
const void *  act,
int  priority,
int  signal_number
[pure virtual]
 

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

Implements ACE_Asynch_Read_Stream_Impl.

Implemented in ACE_WIN32_Asynch_Read_File.

virtual int ACE_Asynch_Read_File_Impl::readv 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
[pure virtual]
 

Same as above but with scatter support, through chaining of composite message blocks using the continuation field. NOTE: In win32 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

Implemented in ACE_WIN32_Asynch_Read_File.


The documentation for this class was generated from the following files:
Generated on Wed Nov 23 15:47:54 2005 for ACE by  doxygen 1.4.5