Truncatable_ostream Class Reference

Truncatable_ostream abstract class provides seek() and truncate() interfaces to all truncatable output streams. More...

#include <basic_ostream.h>

Inheritance diagram for Truncatable_ostream:

Public Member Functions
virtual bool	truncate (my_off_t offset)=0
	Truncate some data at the end of the output stream. More...
virtual bool	seek (my_off_t offset)=0
	Put the write position to a given offset. More...
virtual bool	flush ()=0
	Flush data. More...
virtual bool	sync ()=0
	Sync. More...
	~Truncatable_ostream () override=default
Public Member Functions inherited from Basic_ostream
virtual bool	write (const unsigned char *buffer, my_off_t length)=0
	Write some bytes into the output stream. More...
virtual	~Basic_ostream ()=default

Detailed Description

Truncatable_ostream abstract class provides seek() and truncate() interfaces to all truncatable output streams.

Constructor & Destructor Documentation

~Truncatable_ostream()

Truncatable_ostream::~Truncatable_ostream ( )

overridedefault

Member Function Documentation

flush()

virtual bool Truncatable_ostream::flush ( )

pure virtual

Flush data.

Return values

false	Success.
true	Error.

Implemented in IO_CACHE_ostream, IO_CACHE_binlog_cache_storage, and Binlog_encryption_ostream.

seek()

virtual bool Truncatable_ostream::seek ( my_off_t  offset )

pure virtual

Put the write position to a given offset.

The offset counts from the beginning of the file.

Parameters

[in]

offset

Where the write position will be

Return values

false	Success
true	Error

Implemented in IO_CACHE_ostream, IO_CACHE_binlog_cache_storage, and Binlog_encryption_ostream.

sync()

virtual bool Truncatable_ostream::sync ( )

pure virtual

Sync.

Return values

false	Success
true	Error

Implemented in IO_CACHE_ostream, IO_CACHE_binlog_cache_storage, and Binlog_encryption_ostream.

truncate()

virtual bool Truncatable_ostream::truncate ( my_off_t  offset )

pure virtual

Truncate some data at the end of the output stream.

Parameters

[in]

offset

Where the output stream will be truncated to.

Return values

false	Success
true	Error

Implemented in IO_CACHE_ostream, IO_CACHE_binlog_cache_storage, and Binlog_encryption_ostream.

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

• sql/basic_ostream.h