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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:07:14 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 18:07:14 +0000
commita175314c3e5827eb193872241446f2f8f5c9d33c (patch)
treecd3d60ca99ae00829c52a6ca79150a5b6e62528b /storage/innobase/include/ut0list.ic
parentInitial commit. (diff)
downloadmariadb-10.5-upstream/1%10.5.12.tar.xz
mariadb-10.5-upstream/1%10.5.12.zip
Adding upstream version 1:10.5.12.upstream/1%10.5.12upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+/*****************************************************************************
+
+Copyright (c) 2006, 2013, Oracle and/or its affiliates. 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.,
+51 Franklin Street, Fifth Floor, 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));
+}
+
+/********************************************************************
+Get number of items on list.
+@return number of items on list */
+UNIV_INLINE
+ulint
+ib_list_len(
+/*========*/
+ const ib_list_t* list) /*<! in: list */
+{
+ ulint len = 0;
+ ib_list_node_t* node = list->first;
+
+ while(node) {
+ len++;
+ node = node->next;
+ }
+
+ return (len);
+}