ibt Namespace Reference

Classes
class	Tablespace
	Session Temporary tablespace. More...
class	Tablespace_pool
	Pool of session temporary tablespaces. More...

Enumerations
enum	tbsp_purpose { TBSP_NONE = 0 , TBSP_USER , TBSP_INTRINSIC , TBSP_SLAVE }
	Purpose for using tablespace. More...

Functions
dberr_t	open_or_create (bool create_new_db)
	Create the session temporary tablespaces on startup. More...
void	free_tmp (Tablespace *ts)
	Release a tablespace back to the pool. More...
void	delete_pool_manager ()
	Delete the pool manager. More...
void	close_files ()
	Close all files in the pool. More...
Tablespace *	get_rpl_slave_tblsp ()
static dberr_t	create_temp_dir ()
	Create the directory holding the temporary pool tablespaces. More...

Variables
class Tablespace_pool *	tbsp_pool = nullptr
	Pool of temporary tablespace. More...
char *	srv_temp_dir = nullptr
	Server temp tablespaces directory, can be absolute path. More...
const uint32_t	INIT_SIZE = 10
	The initial size of temporary tablespace pool. More...
const uint32_t	POOL_EXPAND_SIZE = 10
	The number of tablespaces added to the pool every time the pool is expanded. More...
const uint32_t	SLAVE_THREAD_ID = UINT32_MAX
	Thread id for the replication thread. More...
static const char	DIR_NAME [] = "#innodb_temp"
	Directory to store the session temporary tablespaces. More...
static const char	PREFIX_NAME [] = "temp_"
	Filename prefix to identify the session temporary tablespaces. More...
static std::string	temp_tbsp_dir
	Directory name where session temporary tablespaces are stored. More...
static Tablespace *	rpl_slave_tblsp = nullptr
	Tablespace to be used by the replication thread. More...

Enumeration Type Documentation

tbsp_purpose

enum ibt::tbsp_purpose

Purpose for using tablespace.

Enumerator
TBSP_NONE	Tablespace is not being used for any temporary table.
TBSP_USER	Tablespace is used for user temporary tables.
TBSP_INTRINSIC	Tablespace is used for intrinsic tables.
TBSP_SLAVE	Tablespace is used by the slave node in a replication setup.

Function Documentation

close_files()

void ibt::close_files

(

)

Close all files in the pool.

create_temp_dir()

static dberr_t ibt::create_temp_dir ( )

static

Create the directory holding the temporary pool tablespaces.

Returns

DB_SUCCESS in case of success and error if unable to create the directory

delete_pool_manager()

void ibt::delete_pool_manager

(

)

Delete the pool manager.

This should be called only on shutdown

free_tmp()

void ibt::free_tmp

(

Tablespace *

ts

)

Release a tablespace back to the pool.

The tablespace will be truncated before adding back to pool

get_rpl_slave_tblsp()

Tablespace * ibt::get_rpl_slave_tblsp

(

)

Returns

a session tablespace dedicated for replication slave threads. Note this slave session tablespace could be used from many slave worker threads

open_or_create()

dberr_t ibt::open_or_create

(

bool

create_new_db

)

Create the session temporary tablespaces on startup.

Parameters

[in]

create_new_db

true if bootstrapping

Returns

DB_SUCCESS on success, else DB_ERROR on failure

Variable Documentation

DIR_NAME

const char ibt::DIR_NAME[] = "#innodb_temp"

static

Directory to store the session temporary tablespaces.

Used when user doesn't provide a temporary tablespace dir

INIT_SIZE

const uint32_t ibt::INIT_SIZE = 10

The initial size of temporary tablespace pool.

POOL_EXPAND_SIZE

const uint32_t ibt::POOL_EXPAND_SIZE = 10

The number of tablespaces added to the pool every time the pool is expanded.

PREFIX_NAME

const char ibt::PREFIX_NAME[] = "temp_"

static

Filename prefix to identify the session temporary tablespaces.

They are of pattern temp_*.ibt

rpl_slave_tblsp

Tablespace* ibt::rpl_slave_tblsp = nullptr

static

Tablespace to be used by the replication thread.

SLAVE_THREAD_ID

const uint32_t ibt::SLAVE_THREAD_ID = UINT32_MAX

Thread id for the replication thread.

srv_temp_dir

char * ibt::srv_temp_dir = nullptr

Server temp tablespaces directory, can be absolute path.

tbsp_pool

Tablespace_pool * ibt::tbsp_pool = nullptr

Pool of temporary tablespace.

temp_tbsp_dir

std::string ibt::temp_tbsp_dir

static

Directory name where session temporary tablespaces are stored.

This location is decided after consulting srv_temp_dir