TrxUndoRsegsIterator Struct Reference

Choose the rollback segment with the smallest trx_no. More...

#include <trx0purge.h>

Public Member Functions
	TrxUndoRsegsIterator (trx_purge_t *purge_sys)
	Constructor. More...
const page_size_t	set_next ()
	Sets the next rseg to purge in m_purge_sys. More...

Private Member Functions
	TrxUndoRsegsIterator (const TrxUndoRsegsIterator &)
TrxUndoRsegsIterator &	operator= (const TrxUndoRsegsIterator &)

Private Attributes
trx_purge_t *	m_purge_sys
	The purge system pointer. More...
TrxUndoRsegs	m_trx_undo_rsegs
	The current element to process. More...
Rsegs_array< 2 >::iterator	m_iter
	Track the current element in m_trx_undo_rseg. More...

Static Private Attributes
static const TrxUndoRsegs	NullElement
	Sentinel value. More...

Detailed Description

Choose the rollback segment with the smallest trx_no.

Constructor & Destructor Documentation

TrxUndoRsegsIterator() [1/2]

TrxUndoRsegsIterator::TrxUndoRsegsIterator

(

trx_purge_t *

purge_sys

)

Constructor.

TrxUndoRsegsIterator() [2/2]

TrxUndoRsegsIterator::TrxUndoRsegsIterator ( const TrxUndoRsegsIterator &  )

private

Member Function Documentation

operator=()

TrxUndoRsegsIterator & TrxUndoRsegsIterator::operator= ( const TrxUndoRsegsIterator &  )

private

set_next()

const page_size_t TrxUndoRsegsIterator::set_next

(

)

Sets the next rseg to purge in m_purge_sys.

Returns

page size of the table for which the log is. NOTE: if rseg is NULL when this function returns this means that there are no rollback segments to purge and then the returned page size object should not be used.

Member Data Documentation

m_iter

Rsegs_array<2>::iterator TrxUndoRsegsIterator::m_iter

private

Track the current element in m_trx_undo_rseg.

m_purge_sys

trx_purge_t* TrxUndoRsegsIterator::m_purge_sys

private

The purge system pointer.

m_trx_undo_rsegs

TrxUndoRsegs TrxUndoRsegsIterator::m_trx_undo_rsegs

private

The current element to process.

NullElement

const TrxUndoRsegs TrxUndoRsegsIterator::NullElement

staticprivate

Sentinel value.

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

• storage/innobase/include/trx0purge.h
• storage/innobase/trx/trx0purge.cc