TrxListIterator Class Reference

This iterates over RW trx_sys lists only. More...

Public Member Functions
	TrxListIterator ()
const trx_t *	current ()
	Get the current transaction whose ordinality is m_index. More...
void	next ()
	Advance the transaction current ordinal value and reset the transaction lock ordinal value. More...
TrxLockIterator &	lock_iter ()

Private Member Functions
const trx_t *	reposition () const
	Reposition the "cursor" on the current transaction. More...

Private Attributes
ulint	m_index
	Ordinal value of the transaction in the current transaction list. More...
decltype(trx_sys->rw_trx_list) *	m_trx_list
	Current transaction list. More...
TrxLockIterator	m_lock_iter
	For iterating over a transaction's locks. More...

Detailed Description

This iterates over RW trx_sys lists only.

We need to keep track where the iterator was up to and we do that using an ordinal value.

Constructor & Destructor Documentation

TrxListIterator()

TrxListIterator::TrxListIterator ( )

inline

Member Function Documentation

current()

const trx_t * TrxListIterator::current ( )

inline

Get the current transaction whose ordinality is m_index.

Returns

current transaction or 0

lock_iter()

TrxLockIterator & TrxListIterator::lock_iter ( )

inline

next()

void TrxListIterator::next ( void  )

inline

Advance the transaction current ordinal value and reset the transaction lock ordinal value.

reposition()

const trx_t * TrxListIterator::reposition ( ) const

inlineprivate

Reposition the "cursor" on the current transaction.

If it is the first time then the "cursor" will be positioned on the first transaction.

Returns

transaction instance or 0

Member Data Documentation

m_index

ulint TrxListIterator::m_index

private

Ordinal value of the transaction in the current transaction list.

m_lock_iter

TrxLockIterator TrxListIterator::m_lock_iter

private

For iterating over a transaction's locks.

m_trx_list

decltype(trx_sys->rw_trx_list) * TrxListIterator::m_trx_list

private

Current transaction list.

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

• storage/innobase/lock/lock0lock.cc