trx0trx.ic File Reference

The transaction. More...

#include "read0read.h"

Functions
static bool	trx_state_eq (const trx_t *trx, trx_state_t state)
static const dict_index_t *	trx_get_error_index (const trx_t *trx)
	Retrieves the index causing error from a trx. More...
static const char *	trx_get_que_state_str (const trx_t *trx)
	Retrieves transaction's que state in a human readable string. More...
static trx_id_t	trx_get_id_for_print (const trx_t *trx)
	Retreieves the transaction ID. More...
static enum trx_dict_op_t	trx_get_dict_operation (const trx_t *trx)
	Determine if a transaction is a dictionary operation. More...
static void	trx_set_dict_operation (trx_t *trx, enum trx_dict_op_t op)
	Flag a transaction a dictionary operation. More...
static bool	trx_is_redo_rseg_updated (const trx_t *trx)
	Check if redo rseg is modified for insert/update. More...
static bool	trx_is_temp_rseg_updated (const trx_t *trx)
	Check if noredo rseg is modified for insert/update. More...
static bool	trx_is_rseg_updated (const trx_t *trx)
	Check if redo/noredo rseg is modified for insert/update. More...
static bool	trx_is_rseg_assigned (const trx_t *trx)
	Check if redo/nonredo rseg is valid. More...
static void	trx_reference (trx_t *trx)
static void	trx_release_reference (trx_t *trx)
	Release the transaction. More...
static ReadView *	trx_get_read_view (trx_t *trx)
static const ReadView *	trx_get_read_view (const trx_t *trx)
static bool	trx_is_high_priority (const trx_t *trx)
static const trx_t *	trx_arbitrate (const trx_t *requestor, const trx_t *holder)
const char *	trx_state_string (trx_state_t state)
	Human readable transaction state, for diagnostic purposes. More...

Detailed Description

The transaction.

Created 3/26/1996 Heikki Tuuri

Function Documentation

trx_arbitrate()

static const trx_t * trx_arbitrate ( const trx_t *  requestor, const trx_t *  holder  )

inlinestatic

Parameters

[in]	requestor	Transaction requesting the lock
[in]	holder	Transaction holding the lock

Returns

the transaction that will be rolled back, null don't care

trx_get_dict_operation()

static enum trx_dict_op_t trx_get_dict_operation ( const trx_t *  trx )

inlinestatic

Determine if a transaction is a dictionary operation.

Returns

dictionary operation mode

Parameters

trx	in: transaction

trx_get_error_index()

static const dict_index_t * trx_get_error_index ( const trx_t *  trx )

inlinestatic

Retrieves the index causing error from a trx.

Parameters

[in]

trx

trx object

Returns

the error index

trx_get_id_for_print()

static trx_id_t trx_get_id_for_print ( const trx_t *  trx )

inlinestatic

Retreieves the transaction ID.

In a given point in time it is guaranteed that IDs of the running transactions are unique. The values returned by this function for readonly transactions may be reused, so a subsequent RO transaction may get the same ID as a RO transaction that existed in the past. The values returned by this function should be used for printing purposes only.

Parameters

[in]

trx

transaction whose id to retrieve

Returns

transaction id

trx_get_que_state_str()

static const char * trx_get_que_state_str ( const trx_t *  trx )

inlinestatic

Retrieves transaction's que state in a human readable string.

The string should not be free()'d or modified.

Returns

string in the data segment

Parameters

trx	in: transaction

trx_get_read_view() [1/2]

static const ReadView * trx_get_read_view ( const trx_t *  trx )

inlinestatic

Parameters

trx	Get the active view for this transaction, if one exists

Returns

the transaction's read view or NULL if one not assigned.

trx_get_read_view() [2/2]

static ReadView * trx_get_read_view ( trx_t *  trx )

inlinestatic

Parameters

trx	Get the active view for this transaction, if one exists

Returns

the transaction's read view or NULL if one not assigned.

trx_is_high_priority()

static bool trx_is_high_priority ( const trx_t *  trx )

inlinestatic

Parameters

[in]

trx

Transaction to check

Returns

true if the transaction is a high priority transaction.

trx_is_redo_rseg_updated()

static bool trx_is_redo_rseg_updated ( const trx_t *  trx )

inlinestatic

Check if redo rseg is modified for insert/update.

Parameters

trx	in: transaction

trx_is_rseg_assigned()

static bool trx_is_rseg_assigned ( const trx_t *  trx )

inlinestatic

Check if redo/nonredo rseg is valid.

Parameters

trx	in: transaction

trx_is_rseg_updated()

static bool trx_is_rseg_updated ( const trx_t *  trx )

inlinestatic

Check if redo/noredo rseg is modified for insert/update.

Parameters

trx	in: transaction

trx_is_temp_rseg_updated()

static bool trx_is_temp_rseg_updated ( const trx_t *  trx )

inlinestatic

Check if noredo rseg is modified for insert/update.

Parameters

trx	in: transaction

trx_reference()

static void trx_reference ( trx_t *  trx )

inlinestatic

trx_release_reference()

static void trx_release_reference ( trx_t *  trx )

inlinestatic

Release the transaction.

Decrease the reference count.

Parameters

trx	Transaction that is being released

trx_set_dict_operation()

static void trx_set_dict_operation ( trx_t *  trx, enum trx_dict_op_t  op  )

inlinestatic

Flag a transaction a dictionary operation.

Parameters

trx	in/out: transaction
op	in: operation, not TRX_DICT_OP_NONE

trx_state_eq()

static bool trx_state_eq ( const trx_t *  trx, trx_state_t  state  )

inlinestatic

trx_state_string()

const char * trx_state_string ( trx_state_t  state )

inline

Human readable transaction state, for diagnostic purposes.

Returns

pointer to static string, nullptr if state is not valid