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:

Collaboration diagram for ACE_Asynch_Read_File_Impl:

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.

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Detailed Description

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

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Constructor & Destructor Documentation

ACE_Asynch_Read_File_Impl::~ACE_Asynch_Read_File_Impl

(

void

)

[virtual]

ACE_Asynch_Read_File_Impl::ACE_Asynch_Read_File_Impl

(

void

)

[inline, protected]

Do-nothing constructor.

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Member Function Documentation

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.

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.

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

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.

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The documentation for this class was generated from the following files:

• Asynch_IO_Impl.h
• Asynch_IO_Impl.cpp
• Asynch_IO_Impl.inl