log0consumer.h File Reference

Redo log functions and types related to the log consumption. More...

#include "log0types.h"

Go to the source code of this file.

Classes
class	Log_consumer
class	Log_user_consumer
class	Log_checkpoint_consumer

Functions
void	log_consumer_register (log_t &log, Log_consumer *log_consumer)
	Register the given redo log consumer. More...
void	log_consumer_unregister (log_t &log, Log_consumer *log_consumer)
	Unregister the given redo log consumer. More...
Log_consumer *	log_consumer_get_oldest (const log_t &log, lsn_t &oldest_needed_lsn)
	Find the registered redo log consumer which has the smallest value reported by get_consumed_lsn() - ie. More...

Detailed Description

Redo log functions and types related to the log consumption.

Function Documentation

log_consumer_get_oldest()

Log_consumer * log_consumer_get_oldest	(	const log_t &	log,
		lsn_t &	oldest_needed_lsn
	)

Find the registered redo log consumer which has the smallest value reported by get_consumed_lsn() - ie.

the most lagging consumer. When multiple consumers have the same value, any of them might be returned.

Parameters

[in]	log	the redo log
[out]	oldest_needed_lsn	the oldest lsn needed by the most lagging consumer

Returns

the most lagging consumer

log_consumer_register()

void log_consumer_register	(	log_t &	log,
		Log_consumer *	log_consumer
	)

Register the given redo log consumer.

Parameters

[in,out]	log	redo log
[in]	log_consumer	redo log consumer to register

log_consumer_unregister()

void log_consumer_unregister	(	log_t &	log,
		Log_consumer *	log_consumer
	)

Unregister the given redo log consumer.

Parameters

[in,out]	log	redo log
[in]	log_consumer	redo log consumer to unregister