CAsyncFileWriter::Callback Class Reference
[Asynchronous I/O, FileIO]

Inheritance diagram for CAsyncFileWriter::Callback:

[legend]

List of all members.

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Detailed Description

An interface for users of the CAsyncFileWriter to be notified of any errors that occur during the asynchronous write operations on the file.

Public Member Functions
virtual void	OnError (CAsyncFileWriter *pInstance, const JetByteTools::Win32::_tstring &where, const DWORD lastError)=0
	Called when an error occurs during asynchronous processing or file closure.
virtual void	OnError (CAsyncFileWriter *pInstance, const JetByteTools::Win32::_tstring &where, const JetByteTools::Win32::_tstring &message)=0
	Called when an error occurs during asynchronous processing or file closure.
virtual void	OnLastWrite (CAsyncFileWriter *pInstance)=0
	Called when the final write occurs after Shutdown() has been called on the file writer. You can use this to take an action with the file writer when the last pending write completes rather than blocking a thread to Wait() for the situation.
Protected Member Functions
	~Callback ()
	We never delete instances of this interface; you must manage the lifetime of the class that implements it.

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Constructor & Destructor Documentation

~Callback

(

)

[inline, protected]

We never delete instances of this interface; you must manage the lifetime of the class that implements it.

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Member Function Documentation

virtual void OnError	(	CAsyncFileWriter *	pInstance,
		const JetByteTools::Win32::_tstring &	where,
		const DWORD	lastError
	)			[pure virtual]

Called when an error occurs during asynchronous processing or file closure.

virtual void OnError	(	CAsyncFileWriter *	pInstance,
		const JetByteTools::Win32::_tstring &	where,
		const JetByteTools::Win32::_tstring &	message
	)			[pure virtual]

Called when an error occurs during asynchronous processing or file closure.

virtual void OnLastWrite

(

CAsyncFileWriter *

pInstance

)

[pure virtual]

Called when the final write occurs after Shutdown() has been called on the file writer. You can use this to take an action with the file writer when the last pending write completes rather than blocking a thread to Wait() for the situation.

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