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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.,
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51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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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