cursor_by_thread Class Reference

Cursor CURSOR_BY_THREAD. More...

#include <cursor_by_thread.h>

Inheritance diagram for cursor_by_thread:

Public Member Functions
void	reset_position () override
	Reset the cursor position to the beginning of the table. More...
int	rnd_next () override
	Fetch the next row in this cursor. More...
int	rnd_pos (const void *pos) override
	Fetch a row by position. More...
int	index_next () override
	Find key in index, read record. More...
	~cursor_by_thread () override=default
Public Member Functions inherited from PFS_engine_table
int	read_row (TABLE *table, unsigned char *buf, Field **fields)
	Read a table row. More...
int	update_row (TABLE *table, const unsigned char *old_buf, unsigned char *new_buf, Field **fields)
	Update a table row. More...
int	delete_row (TABLE *table, const unsigned char *buf, Field **fields)
	Delete a row from this table. More...
virtual int	rnd_init (bool scan)
	Initialize table scan. More...
virtual int	index_init (uint idx, bool sorted)
virtual int	index_read (KEY *key_infos, uint index, const uchar *key, uint key_len, enum ha_rkey_function find_flag)
	Positions an index cursor to the index specified in the handle. More...
virtual int	index_read_last (KEY *key_infos, const uchar *key, uint key_len)
virtual int	index_next_same (const uchar *key, uint key_len)
	Reads the next row matching the given key value. More...
virtual int	index_prev ()
virtual int	index_first ()
virtual int	index_last ()
void	get_position (void *ref)
	Get the position of the current row. More...
void	set_position (const void *ref)
	Set the table cursor at a given position. More...
virtual	~PFS_engine_table ()=default
	Destructor. More...

Static Public Member Functions
static ha_rows	get_row_count ()
Static Public Member Functions inherited from PFS_engine_table
static PFS_engine_table_share *	find_engine_table_share (const char *name)
	Find a table share by name. More...

Protected Member Functions
	cursor_by_thread (const PFS_engine_table_share *share)
virtual int	make_row (PFS_thread *thread)=0
Protected Member Functions inherited from PFS_engine_table
virtual int	read_row_values (TABLE *table, unsigned char *buf, Field **fields, bool read_all)=0
	Read the current row values. More...
virtual int	update_row_values (TABLE *table, const unsigned char *old_buf, unsigned char *new_buf, Field **fields)
	Update the current row values. More...
virtual int	delete_row_values (TABLE *table, const unsigned char *buf, Field **fields)
	Delete a row. More...
	PFS_engine_table (const PFS_engine_table_share *share, void *pos)
	Constructor. More...

Protected Attributes
PFS_index_threads *	m_opened_index
Protected Attributes inherited from PFS_engine_table
const PFS_engine_table_share *	m_share_ptr
	Table share. More...
void *	m_pos_ptr
	Opaque pointer to the m_pos position of this cursor. More...
time_normalizer *	m_normalizer
	Current normalizer. More...
PFS_engine_index_abstract *	m_index
	Current index. More...

Private Attributes
PFS_simple_index	m_pos
	Current position. More...
PFS_simple_index	m_next_pos
	Next position. More...

Detailed Description

Cursor CURSOR_BY_THREAD.

Constructor & Destructor Documentation

cursor_by_thread()

cursor_by_thread::cursor_by_thread ( const PFS_engine_table_share *  share )

explicitprotected

~cursor_by_thread()

cursor_by_thread::~cursor_by_thread ( )

overridedefault

Member Function Documentation

get_row_count()

ha_rows cursor_by_thread::get_row_count ( )

static

index_next()

int cursor_by_thread::index_next ( )

overridevirtual

Find key in index, read record.

Reimplemented from PFS_engine_table.

make_row()

virtual int cursor_by_thread::make_row ( PFS_thread *  thread )

protectedpure virtual

Implemented in table_processlist, and table_threads.

reset_position()

void cursor_by_thread::reset_position ( )

overridevirtual

Reset the cursor position to the beginning of the table.

Implements PFS_engine_table.

rnd_next()

int cursor_by_thread::rnd_next ( )

overridevirtual

Fetch the next row in this cursor.

Implements PFS_engine_table.

rnd_pos()

int cursor_by_thread::rnd_pos ( const void *  pos )

overridevirtual

Fetch a row by position.

Parameters

pos	position to fetch

Implements PFS_engine_table.

Member Data Documentation

m_next_pos

PFS_simple_index cursor_by_thread::m_next_pos

private

Next position.

m_opened_index

PFS_index_threads* cursor_by_thread::m_opened_index

protected

m_pos

PFS_simple_index cursor_by_thread::m_pos

private

Current position.

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

• storage/perfschema/cursor_by_thread.h
• storage/perfschema/cursor_by_thread.cc