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/*****************************************************************************
Copyright (c) 2006, 2009, Innobase Oy. All Rights Reserved.
This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 59 Temple
Place, Suite 330, Boston, MA 02111-1307 USA
*****************************************************************************/
/*******************************************************************//**
@file include/ut0vec.ic
A vector of pointers to data items
Created 4/6/2006 Osku Salerma
************************************************************************/
/****************************************************************//**
Get number of elements in vector.
@return number of elements in vector */
UNIV_INLINE
ulint
ib_vector_size(
/*===========*/
const ib_vector_t* vec) /*!< in: vector */
{
return(vec->used);
}
/****************************************************************//**
Get n'th element.
@return n'th element */
UNIV_INLINE
void*
ib_vector_get(
/*==========*/
ib_vector_t* vec, /*!< in: vector */
ulint n) /*!< in: element index to get */
{
ut_a(n < vec->used);
return(vec->data[n]);
}
/****************************************************************//**
Remove the last element from the vector.
@return last vector element */
UNIV_INLINE
void*
ib_vector_pop(
/*==========*/
ib_vector_t* vec) /*!< in/out: vector */
{
void* elem;
ut_a(vec->used > 0);
--vec->used;
elem = vec->data[vec->used];
ut_d(vec->data[vec->used] = NULL);
UNIV_MEM_INVALID(&vec->data[vec->used], sizeof(*vec->data));
return(elem);
}
/****************************************************************//**
Free the underlying heap of the vector. Note that vec is invalid
after this call. */
UNIV_INLINE
void
ib_vector_free(
/*===========*/
ib_vector_t* vec) /*!< in, own: vector */
{
mem_heap_free(vec->heap);
}
/****************************************************************//**
Test whether a vector is empty or not.
@return TRUE if empty */
UNIV_INLINE
ibool
ib_vector_is_empty(
/*===============*/
const ib_vector_t* vec) /*!< in: vector */
{
return(ib_vector_size(vec) == 0);
}
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