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9584b46995
retrieve trx_t's properties that will be exported in INFORMATION_SCHEMA tables. Approved by: Marko
147 lines
3.6 KiB
Text
147 lines
3.6 KiB
Text
/******************************************************
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The transaction
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(c) 1996 Innobase Oy
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Created 3/26/1996 Heikki Tuuri
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*******************************************************/
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/*****************************************************************
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Starts the transaction if it is not yet started. */
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UNIV_INLINE
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void
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trx_start_if_not_started(
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/*=====================*/
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trx_t* trx) /* in: transaction */
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{
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ut_ad(trx->conc_state != TRX_COMMITTED_IN_MEMORY);
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if (trx->conc_state == TRX_NOT_STARTED) {
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trx_start(trx, ULINT_UNDEFINED);
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}
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}
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/*****************************************************************
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Starts the transaction if it is not yet started. Assumes we have reserved
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the kernel mutex! */
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UNIV_INLINE
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void
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trx_start_if_not_started_low(
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/*=========================*/
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trx_t* trx) /* in: transaction */
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{
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ut_ad(trx->conc_state != TRX_COMMITTED_IN_MEMORY);
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if (trx->conc_state == TRX_NOT_STARTED) {
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trx_start_low(trx, ULINT_UNDEFINED);
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}
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}
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/*****************************************************************
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Resets the new record lock info in a transaction struct. */
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UNIV_INLINE
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void
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trx_reset_new_rec_lock_info(
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/*========================*/
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trx_t* trx) /* in: transaction struct */
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{
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trx->new_rec_locks[0] = NULL;
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trx->new_rec_locks[1] = NULL;
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}
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/*****************************************************************
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Registers that we have set a new record lock on an index. We only have space
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to store 2 indexes! If this is called to store more than 2 indexes after
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trx_reset_new_rec_lock_info(), then this function does nothing. */
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UNIV_INLINE
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void
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trx_register_new_rec_lock(
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/*======================*/
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trx_t* trx, /* in: transaction struct */
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dict_index_t* index) /* in: trx sets a new record lock on this
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index */
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{
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if (trx->new_rec_locks[0] == NULL) {
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trx->new_rec_locks[0] = index;
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return;
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}
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if (trx->new_rec_locks[0] == index) {
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return;
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}
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if (trx->new_rec_locks[1] != NULL) {
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return;
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}
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trx->new_rec_locks[1] = index;
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}
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/*****************************************************************
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Checks if trx has set a new record lock on an index. */
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UNIV_INLINE
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ibool
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trx_new_rec_locks_contain(
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/*======================*/
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/* out: TRUE if trx has set a new record lock
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on index */
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trx_t* trx, /* in: transaction struct */
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dict_index_t* index) /* in: index */
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{
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return(trx->new_rec_locks[0] == index
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|| trx->new_rec_locks[1] == index);
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}
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/********************************************************************
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Retrieves the error_info field from a trx. */
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UNIV_INLINE
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const dict_index_t*
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trx_get_error_info(
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/*===============*/
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/* out: the error info */
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const trx_t* trx) /* in: trx object */
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{
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return(trx->error_info);
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}
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/***********************************************************************
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Retrieves transacion's id, represented as unsigned long long. */
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UNIV_INLINE
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ullint
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trx_get_id(
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/*=======*/
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/* out: transaction's id */
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const trx_t* trx) /* in: transaction */
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{
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return((ullint)ut_conv_dulint_to_longlong(trx->id));
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}
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/***********************************************************************
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Retrieves transaction's que state in a human readable string. The string
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should not be free()'d or modified. */
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UNIV_INLINE
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const char*
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trx_get_que_state_str(
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/*==================*/
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/* out: string in the data segment */
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const trx_t* trx) /* in: transaction */
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{
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/* be sure to adjust TRX_QUE_STATE_STR_MAX_LEN if you change this */
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switch (trx->que_state) {
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case TRX_QUE_RUNNING:
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return("RUNNING");
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case TRX_QUE_LOCK_WAIT:
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return("LOCK WAIT");
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case TRX_QUE_ROLLING_BACK:
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return("ROLLING BACK");
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case TRX_QUE_COMMITTING:
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return("COMMITTING");
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default:
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return("UNKNOWN");
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}
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}
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