trx0undo_trunc.h File Reference

Undo truncation handling. More...

#include "dict0dict.h"
#include "fsp0fsp.h"
#include "trx0sys.h"

Go to the source code of this file.

Classes
class	undo_truncate::Undo_num2id_map
	Map from undo tablespace number to space id to allow a reserved undo space ID to be found quickly. More...
struct	undo_truncate::Tablespace
	An undo_truncate::Tablespace object is used to easily convert between undo_space_id and undo_space_num and to create the automatic file_name and space name. More...
class	undo_truncate::Tablespaces
	List of undo tablespaces, each containing a list of rollback segments. More...
class	undo_truncate::Truncate
	Track an UNDO tablespace marked for truncate. More...
class	undo_truncate::Inject_failure_once
	Inject a failure in the undo truncation debug compiled code at various places so that it fails the first time it hits and succeeds after that. More...

Namespaces
namespace	undo_truncate

Functions
bool	undo_truncate::is_active_truncate_log_present (space_id_t space_num)
	Check if TRUNCATE_DDL_LOG file exist. More...
void	undo_truncate::remove_truncate_log_file (space_id_t space_num)
	Remove TRUNCATE_DDL_LOG file if it exists. More...
char *	undo_truncate::make_space_name (space_id_t space_id)
	Build a standard undo tablespace name from a space_id. More...
char *	undo_truncate::make_file_name (space_id_t space_id)
	Build a standard undo tablespace file name from a space_id. More...
bool	undo_truncate::is_reserved (space_id_t space_id)
	Check if the space_id is an undo space ID in the reserved range. More...
space_id_t	undo_truncate::num2id (space_id_t space_num, size_t ndx)
	Convert an undo space number (from 1 to 127) into the undo space_id, given an index indicating which space_id from the pool assigned to that undo number. More...
space_id_t	undo_truncate::num2id (space_id_t space_num)
	Convert an undo space number (from 1 to 127) into an undo space_id. More...
space_id_t	undo_truncate::id2num (space_id_t space_id)
	Get the corresponding UNDO space number for a given UNDO space id. More...
space_id_t	undo_truncate::id2next_id (space_id_t space_id)
void	undo_truncate::set_active (space_id_t space_id)
	Set an undo tablespace active. More...
void	undo_truncate::use_space_id (space_id_t space_id)
	Note that the undo space number for a space ID is being used. More...
space_id_t	undo_truncate::use_next_space_id (space_id_t space_num)
	Mark that the given undo space number is being used and return the next available space_id for that space number. More...
space_id_t	undo_truncate::next_space_id (space_id_t space_id)
	Given a valid undo space_id, return the next space_id for that space number. More...
space_id_t	undo_truncate::next_space_id (space_id_t space_id, space_id_t space_num)
	Given a valid undo space_id or SPACE_UNKNOWN, return the next space_id for the given space number. More...
void	undo_truncate::unuse_space_id (space_id_t space_id)
	Mark an undo number associated with a given space_id as unused and available to be reused. More...
space_id_t	undo_truncate::get_next_available_space_id ()
	Return the next available undo space ID to be used for a new explicit undo tablespaces. More...
void	undo_truncate::mark_undo_tablespace_unusable (space_id_t space_id, mtr_t *mtr)
	Set the FSP_FLAGS_MASK_UNDO_UNUSABLE flag in the undo tablespace header to indicate that the undo file is not usable. More...
void	undo_truncate::mark_undo_tablespace_usable (space_id_t space_id, mtr_t *mtr)
	Unset the FSP_FLAGS_MASK_UNDO_UNUSABLE in the undo tablespace header to indicate that the undo file is now usable. More...
void	undo_truncate::inject_crash (const char *injection_point_name)
	Inject a crash if a certain SET GLOBAL DEBUG has been set. More...

Variables
static constexpr char	undo_truncate::s_log_prefix [] = "undo_"
	Truncate Log file Prefix. More...
static constexpr char	undo_truncate::s_log_ext [] = "trunc.log"
	Truncate Log file Extension. More...
ib_mutex_t	undo_truncate::ddl_mutex
	Mutex for serializing undo tablespace related DDL. More...
ut::unique_ptr< Undo_num2id_map >	undo_truncate::num2id_map
Tablespaces *	undo_truncate::spaces
	A global object that contains a vector of undo_truncate::Tablespace structs. More...
constexpr ulint	undo_truncate::TRUNCATE_FREQUENCY = 128

Detailed Description

Undo truncation handling.