keycache.h File Reference

Key cache variable structures. More...

#include <stddef.h>
#include <sys/types.h>
#include <string_view>
#include "my_inttypes.h"
#include "my_io.h"
#include "my_macros.h"
#include "my_sys.h"
#include "mysql/psi/mysql_cond.h"
#include "mysql/psi/mysql_mutex.h"

Go to the source code of this file.

Classes
struct	st_keycache_thread_var
struct	KEYCACHE_WQUEUE
struct	KEY_CACHE

Macros
#define	KEY_CACHE_SIZE   (uint)(8 * 1024 * 1024)
#define	KEY_CACHE_BLOCK_SIZE   (uint)1024
#define	CHANGED_BLOCKS_HASH   128 /* must be power of 2 */

Functions
int	init_key_cache (KEY_CACHE *keycache, ulonglong key_cache_block_size, size_t use_mem, ulonglong division_limit, ulonglong age_threshold)
int	resize_key_cache (KEY_CACHE *keycache, st_keycache_thread_var *thread_var, ulonglong key_cache_block_size, size_t use_mem, ulonglong division_limit, ulonglong age_threshold)
uchar *	key_cache_read (KEY_CACHE *keycache, st_keycache_thread_var *thread_var, File file, my_off_t filepos, int level, uchar *buff, uint length, uint block_length, int return_buffer)
int	key_cache_insert (KEY_CACHE *keycache, st_keycache_thread_var *thread_var, File file, my_off_t filepos, int level, uchar *buff, uint length)
int	key_cache_write (KEY_CACHE *keycache, st_keycache_thread_var *thread_var, File file, my_off_t filepos, int level, uchar *buff, uint length, uint block_length, int force_write)
int	flush_key_blocks (KEY_CACHE *keycache, st_keycache_thread_var *thread_var, int file, enum flush_type type)
void	end_key_cache (KEY_CACHE *keycache, bool cleanup)
bool	multi_keycache_init (void)
void	multi_keycache_free (void)
KEY_CACHE *	multi_key_cache_search (uchar *key, uint length)
bool	multi_key_cache_set (const uchar *key, uint length, KEY_CACHE *key_cache)
void	multi_key_cache_change (KEY_CACHE *old_data, KEY_CACHE *new_data)
int	reset_key_cache_counters (std::string_view name, KEY_CACHE *key_cache)

Variables
KEY_CACHE	dflt_key_cache_var
KEY_CACHE *	dflt_key_cache

Detailed Description

Key cache variable structures.

Macro Definition Documentation

CHANGED_BLOCKS_HASH

#define CHANGED_BLOCKS_HASH   128 /* must be power of 2 */

KEY_CACHE_BLOCK_SIZE

#define KEY_CACHE_BLOCK_SIZE   (uint)1024

KEY_CACHE_SIZE

#define KEY_CACHE_SIZE   (uint)(8 * 1024 * 1024)

Function Documentation

end_key_cache()

void end_key_cache	(	KEY_CACHE *	keycache,
		bool	cleanup
	)

flush_key_blocks()

int flush_key_blocks	(	KEY_CACHE *	keycache,
		st_keycache_thread_var *	thread_var,
		int	file,
		enum flush_type	type
	)

init_key_cache()

int init_key_cache	(	KEY_CACHE *	keycache,
		ulonglong	key_cache_block_size,
		size_t	use_mem,
		ulonglong	division_limit,
		ulonglong	age_threshold
	)

key_cache_insert()

int key_cache_insert	(	KEY_CACHE *	keycache,
		st_keycache_thread_var *	thread_var,
		File	file,
		my_off_t	filepos,
		int	level,
		uchar *	buff,
		uint	length
	)

key_cache_read()

uchar * key_cache_read	(	KEY_CACHE *	keycache,
		st_keycache_thread_var *	thread_var,
		File	file,
		my_off_t	filepos,
		int	level,
		uchar *	buff,
		uint	length,
		uint	block_length,
		int	return_buffer
	)

key_cache_write()

int key_cache_write	(	KEY_CACHE *	keycache,
		st_keycache_thread_var *	thread_var,
		File	file,
		my_off_t	filepos,
		int	level,
		uchar *	buff,
		uint	length,
		uint	block_length,
		int	force_write
	)

multi_key_cache_change()

void multi_key_cache_change	(	KEY_CACHE *	old_data,
		KEY_CACHE *	new_data
	)

multi_key_cache_search()

KEY_CACHE * multi_key_cache_search	(	uchar *	key,
		uint	length
	)

multi_key_cache_set()

bool multi_key_cache_set	(	const uchar *	key,
		uint	length,
		KEY_CACHE *	key_cache
	)

multi_keycache_free()

void multi_keycache_free

(

void

)

multi_keycache_init()

bool multi_keycache_init

(

void

)

reset_key_cache_counters()

int reset_key_cache_counters	(	std::string_view	name,
		KEY_CACHE *	key_cache
	)

resize_key_cache()

int resize_key_cache	(	KEY_CACHE *	keycache,
		st_keycache_thread_var *	thread_var,
		ulonglong	key_cache_block_size,
		size_t	use_mem,
		ulonglong	division_limit,
		ulonglong	age_threshold
	)

Variable Documentation

dflt_key_cache

KEY_CACHE * dflt_key_cache

dflt_key_cache_var

KEY_CACHE dflt_key_cache_var

extern