trx0types.h File Reference

#include "ut0byte.h"

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Data Structures
struct	trx_savept_t

Macros
#define	TRX_ID_FMT   IB_ID_FMT
#define	TRX_ID_MAX_LEN   17
#define	TRX_ID_MAX   IB_ID_MAX

Typedefs
typedef ib_id_t	row_id_t
typedef ib_id_t	trx_id_t
typedef ib_id_t	roll_ptr_t
typedef ib_id_t	undo_no_t
typedef byte	trx_sysf_t
typedef byte	trx_rsegf_t
typedef byte	trx_usegf_t
typedef byte	trx_ulogf_t
typedef byte	trx_upagef_t
typedef byte	trx_undo_rec_t

Enumerations
enum	trx_que_t { TRX_QUE_RUNNING, TRX_QUE_LOCK_WAIT, TRX_QUE_ROLLING_BACK, TRX_QUE_COMMITTING }
enum	trx_state_t { TRX_STATE_NOT_STARTED, TRX_STATE_ACTIVE, TRX_STATE_PREPARED, TRX_STATE_COMMITTED_IN_MEMORY }
enum	trx_dict_op_t { TRX_DICT_OP_NONE = 0, TRX_DICT_OP_TABLE = 1, TRX_DICT_OP_INDEX = 2 }
enum	trx_rb_ctx { RB_NONE = 0, RB_NORMAL, RB_RECOVERY_PURGE_REC, RB_RECOVERY }

Detailed Description

Transaction system global type definitions

Created 3/26/1996 Heikki Tuuri

Macro Definition Documentation

#define TRX_ID_FMT   IB_ID_FMT

printf(3) format used for printing DB_TRX_ID and other system fields

#define TRX_ID_MAX   IB_ID_MAX

Maximum transaction identifier

#define TRX_ID_MAX_LEN   17

maximum length that a formatted trx_t::id could take, not including

the terminating NUL character.

Typedef Documentation

typedef ib_id_t roll_ptr_t

Rollback pointer (DB_ROLL_PTR, DATA_ROLL_PTR)

typedef ib_id_t row_id_t

Row identifier (DB_ROW_ID, DATA_ROW_ID)

typedef ib_id_t trx_id_t

Transaction identifier (DB_TRX_ID, DATA_TRX_ID)

typedef byte trx_rsegf_t

Rollback segment header

typedef byte trx_sysf_t

File objects Transaction system header

typedef byte trx_ulogf_t

Undo log header

typedef byte trx_undo_rec_t

Undo log record

typedef byte trx_upagef_t

Undo log page header

typedef byte trx_usegf_t

Undo segment header

typedef ib_id_t undo_no_t

Undo number

Enumeration Type Documentation

enum trx_dict_op_t

Type of data dictionary operation

Enumerator:

TRX_DICT_OP_NONE	The transaction is not modifying the data dictionary.
TRX_DICT_OP_TABLE	The transaction is creating a table or an index, or dropping a table. The table must be dropped in crash recovery. This and TRX_DICT_OP_NONE are the only possible operation modes in crash recovery.
TRX_DICT_OP_INDEX	The transaction is creating or dropping an index in an existing table. In crash recovery, the data dictionary must be locked, but the table must not be dropped.

enum trx_que_t

Transaction execution states when trx->state == TRX_STATE_ACTIVE

Enumerator:

TRX_QUE_RUNNING	transaction is running
TRX_QUE_LOCK_WAIT	transaction is waiting for a lock
TRX_QUE_ROLLING_BACK	transaction is rolling back
TRX_QUE_COMMITTING	transaction is committing

enum trx_rb_ctx

Rollback contexts

Enumerator:

RB_NONE	no rollback
RB_NORMAL	normal rollback
RB_RECOVERY_PURGE_REC	rolling back an incomplete transaction, in crash recovery, rolling back an INSERT that was performed by updating a delete-marked record; if the delete-marked record no longer exists in an active read view, it will be purged
RB_RECOVERY	rolling back an incomplete transaction, in crash recovery

enum trx_state_t

Transaction states (trx_t::state)