/***************************************************************************
 *
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 * 
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 *       notice, this list of conditions and the following disclaimer.
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 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
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 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 * 
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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 *  version: QAT20.L.1.2.30-00078
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 ***************************************************************************/

/**
 ***************************************************************************
 * @file lac_list.h
 *
 * @defgroup SalList
 *
 * @ingroup SalCtrl
 *
 * List structure and list functions.
 *
 ***************************************************************************/

#ifndef LAC_LIST_H
#define LAC_LIST_H

/**
 *****************************************************************************
 * @ingroup SalList
 *
 * @description
 *      List structure
 *
 *****************************************************************************/
typedef struct sal_list_s
{

    struct sal_list_s *next;
    void *pObj;

} sal_list_t;

/**
*******************************************************************************
* @ingroup SalList
*      Add a structure to tail of a list.
*
* @description
*      Adds pObj to the tail of  list (if it exists). Allocates and sets a
*      new sal_list_t structure.
*
* @param[in] list                      Pointer to the head pointer of the list.
*                                      Can be NULL if no elements yet in list.
* @param[in/out] tail                  Pointer to tail pointer of the list.
*                                      Can be NULL if no elements yet in list.
*                                      Is updated by the function to point to
*tail of list if pObj has been successfully added.
* @param[in] pObj                      Pointer to structure to add to tail of
*                                      the list.
* @retval status
*
*****************************************************************************/
CpaStatus SalList_add(sal_list_t **list, sal_list_t **tail, void *pObj);

/**
*******************************************************************************
* @ingroup SalList
*      Delete an element from the list.
*
* @description
*      Delete an element from the list.
*
* @param[in/out] head_list             Pointer to the head pointer of the list.
*                                      Can be NULL if no elements yet in list.
*                                      Is updated by the function
*                                      to point to list->next if head_list is
*list.
* @param[in/out] pre_list              Pointer to the previous pointer of the
*list. Can be NULL if no elements yet in list.
*                                      (*pre_list)->next is updated
*                                      by the function to point to list->next
* @param[in] list                      Pointer to list.
*
*****************************************************************************/
void SalList_del(sal_list_t **head_list,
                 sal_list_t **pre_list,
                 sal_list_t *list);

/**
*******************************************************************************
* @ingroup SalList
*      Returns pObj element in list structure.
*
* @description
*      Returns pObj associated with sal_list_t structure.
*
* @param[in] list                      Pointer to list element.
* @retval void*                        pObj member of list structure.
*
*****************************************************************************/
void *SalList_getObject(sal_list_t *list);

/**
*******************************************************************************
* @ingroup SalList
*      Set pObj to be NULL in the list.
*
* @description
*      Set pObj of a element in the list to be NULL.
*
* @param[in] list                      Pointer to list element.
*
*****************************************************************************/
void SalList_delObject(sal_list_t **list);

/**
*******************************************************************************
* @ingroup SalList
*      Returns next element in list structure.
*
* @description
*      Returns next associated with sal_list_t structure.
*
* @param[in] list                      Pointer to list element.
* @retval void*                        next member of list structure.
*
*****************************************************************************/
void *SalList_next(sal_list_t *);

/**
*******************************************************************************
* @ingroup SalList
*      Frees memory associated with list structure.
*
* @description
*      Frees memory associated with list structure and the Obj pointed to by
*      the list.
*
* @param[in] list                      Pointer to list.
*
*****************************************************************************/
void SalList_free(sal_list_t **);

#endif
