mariadb/include/ut0list.ic

/*****************************************************************************

Copyright (c) 2006, 2009, Oracle and/or its affiliates. All Rights Reserved.

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*****************************************************************************/

/*******************************************************************//**
@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));
}