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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.

Definition at line 288 of file Asynch_IO_Impl.h.

Constructor & Destructor Documentation

ACE_Asynch_Read_File_Impl::~ACE_Asynch_Read_File_Impl (  void   )  [virtual]
 

Definition at line 39 of file Asynch_IO_Impl.cpp. 

00040 {
00041 }

ACE_INLINE ACE_Asynch_Read_File_Impl::ACE_Asynch_Read_File_Impl (  void   )  [protected]
 

Do-nothing constructor.

Definition at line 42 of file Asynch_IO_Impl.inl. 

00043   : ACE_Asynch_Operation_Impl (),
00044     ACE_Asynch_Read_Stream_Impl ()
00045 {
00046 }

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 will be read and stored in the .

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 will be read and stored in the . The read will start at from the beginning of the file.

Implemented in ACE_POSIX_Asynch_Read_File, and ACE_WIN32_Asynch_Read_File.

Referenced by ACE_Asynch_Read_File::read().

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.

Referenced by ACE_Asynch_Read_File::readv().

The documentation for this class was generated from the following files:
Generated on Thu Nov 9 11:19:40 2006 for ACE by doxygen 1.3.6