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InnoDB AUTOINC code expects the locks to be released in strict reverse order at the end of the statement. However, nested stored proedures and partition tables break this rule. We now allow the locks to be deleted from the trx->autoinc_locks vector in any order but optimise for the common (old) case. rb://441 Approved by Marko Makela
125 lines
3.2 KiB
Text
125 lines
3.2 KiB
Text
/*****************************************************************************
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Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
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This program is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free Software
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Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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Place, Suite 330, Boston, MA 02111-1307 USA
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*****************************************************************************/
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/*******************************************************************//**
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@file include/ut0vec.ic
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A vector of pointers to data items
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Created 4/6/2006 Osku Salerma
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************************************************************************/
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/****************************************************************//**
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Get number of elements in vector.
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@return number of elements in vector */
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UNIV_INLINE
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ulint
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ib_vector_size(
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/*===========*/
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const ib_vector_t* vec) /*!< in: vector */
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{
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return(vec->used);
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}
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/****************************************************************//**
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Get n'th element.
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@return n'th element */
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UNIV_INLINE
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void*
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ib_vector_get(
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/*==========*/
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ib_vector_t* vec, /*!< in: vector */
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ulint n) /*!< in: element index to get */
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{
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ut_a(n < vec->used);
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return(vec->data[n]);
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}
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/****************************************************************//**
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Get last element. The vector must not be empty.
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@return last element */
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UNIV_INLINE
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void*
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ib_vector_get_last(
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/*===============*/
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ib_vector_t* vec) /*!< in: vector */
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{
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ut_a(vec->used > 0);
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return(vec->data[vec->used - 1]);
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}
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/****************************************************************//**
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Set the n'th element. */
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UNIV_INLINE
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void
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ib_vector_set(
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/*==========*/
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ib_vector_t* vec, /*!< in/out: vector */
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ulint n, /*!< in: element index to set */
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void* elem) /*!< in: data element */
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{
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ut_a(n < vec->used);
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vec->data[n] = elem;
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}
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/****************************************************************//**
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Remove the last element from the vector.
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@return last vector element */
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UNIV_INLINE
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void*
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ib_vector_pop(
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/*==========*/
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ib_vector_t* vec) /*!< in/out: vector */
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{
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void* elem;
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ut_a(vec->used > 0);
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--vec->used;
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elem = vec->data[vec->used];
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ut_d(vec->data[vec->used] = NULL);
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UNIV_MEM_INVALID(&vec->data[vec->used], sizeof(*vec->data));
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return(elem);
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}
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/****************************************************************//**
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Free the underlying heap of the vector. Note that vec is invalid
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after this call. */
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UNIV_INLINE
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void
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ib_vector_free(
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/*===========*/
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ib_vector_t* vec) /*!< in, own: vector */
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{
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mem_heap_free(vec->heap);
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}
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/****************************************************************//**
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Test whether a vector is empty or not.
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@return TRUE if empty */
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UNIV_INLINE
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ibool
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ib_vector_is_empty(
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/*===============*/
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const ib_vector_t* vec) /*!< in: vector */
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{
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return(ib_vector_size(vec) == 0);
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}
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