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/*****************************************************************************
Copyright (c) 2006, 2023, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
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, version 2.0, 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.,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA
*****************************************************************************/
/*******************************************************************//**
@file include/ut0list.ic
A double-linked list
Created 4/26/2006 Osku Salerma
************************************************************************/
/****************************************************************//**
Get the first node in the list.
@return first node, or NULL */
UNIV_INLINE
ib_list_node_t*
ib_list_get_first(
/*==============*/
ib_list_t* list) /*!< in: list */
{
return(list->first);
}
/****************************************************************//**
Get the last node in the list.
@return last node, or NULL */
UNIV_INLINE
ib_list_node_t*
ib_list_get_last(
/*=============*/
ib_list_t* list) /*!< in: list */
{
return(list->last);
}
/********************************************************************
Check if list is empty. */
UNIV_INLINE
ibool
ib_list_is_empty(
/*=============*/
/* out: TRUE if empty else FALSE */
const ib_list_t* list) /* in: list */
{
return(!(list->first || list->last));
}