58 lines
2.0 KiB
Plaintext
58 lines
2.0 KiB
Plaintext
/*****************************************************************************
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Copyright (c) 2006, 2018, Oracle and/or its affiliates. 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, version 2.0, as published by the
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Free Software Foundation.
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This program is also distributed with certain software (including but not
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limited to OpenSSL) that is licensed under separate terms, as designated in a
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particular file or component or in included license documentation. The authors
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of MySQL hereby grant you an additional permission to link the program and
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your derivative works with the separately licensed software that they have
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included with MySQL.
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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, version 2.0,
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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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/** @file include/ut0list.ic
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A double-linked list
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Created 4/26/2006 Osku Salerma
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************************************************************************/
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/** Get the first node in the list.
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@return first node, or NULL */
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UNIV_INLINE
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ib_list_node_t *ib_list_get_first(ib_list_t *list) /*!< in: list */
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{
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return (list->first);
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}
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/** Get the last node in the list.
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@return last node, or NULL */
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UNIV_INLINE
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ib_list_node_t *ib_list_get_last(ib_list_t *list) /*!< in: list */
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{
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return (list->last);
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}
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/********************************************************************
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Check if list is empty. */
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UNIV_INLINE
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ibool ib_list_is_empty(
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/* out: TRUE if empty else FALSE */
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const ib_list_t *list) /* in: list */
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{
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return (!(list->first || list->last));
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}
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