Meta data stored in header of a log data block. More...

#include <log0types.h>

Public Member Functions
void	set_lsn (lsn_t lsn)
	Sets m_epoch_no and m_hdr_no from a single lsn. More...

Public Attributes
uint32_t	m_epoch_no
	Together with m_hdr_no form unique identifier of this block,. More...

uint32_t	m_hdr_no
	Together with m_epoch_no form unique identifier of this block,. More...

uint16_t	m_data_len
	Offset up to which this block has data inside, computed from the beginning of the block. More...

uint16_t	m_first_rec_group
	Offset to the first mtr starting in this block, or 0 if there is no mtr starting in this block. More...

Detailed Description

Meta data stored in header of a log data block.

Member Function Documentation

void Log_data_block_header::set_lsn ( lsn_t lsn )

Sets m_epoch_no and m_hdr_no from a single lsn.

uint16_t Log_data_block_header::m_data_len

Offset up to which this block has data inside, computed from the beginning of the block.

uint32_t Log_data_block_header::m_epoch_no

Together with m_hdr_no form unique identifier of this block,.

uint16_t Log_data_block_header::m_first_rec_group

Offset to the first mtr starting in this block, or 0 if there is no mtr starting in this block.

uint32_t Log_data_block_header::m_hdr_no

Together with m_epoch_no form unique identifier of this block,.

See also: log_block_get_hdr_no. Each next log data block has hdr_no incremented by 1 (unless wrapped).

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