listdyn.c

Go to the documentation of this file.

/* generic internal dynamic lists */

#include "fb.h"

void fb_hListDynInit( FB_LIST *list )
{
    memset(list, 0, sizeof(FB_LIST));
}

void fb_hListDynElemAdd( FB_LIST *list, FB_LISTELEM *elem )
{
        if( list->tail != NULL )
                list->tail->next = elem;
        else
                list->head = elem;

        elem->prev = list->tail;
        elem->next = NULL;

        list->tail = elem;

    ++list->cnt;
}

void fb_hListDynElemRemove( FB_LIST *list, FB_LISTELEM *elem )
{
        /* del from used list */
        if( elem->prev != NULL )
                elem->prev->next = elem->next;
        else
                list->head = elem->next;

        if( elem->next != NULL )
                elem->next->prev = elem->prev;
        else
                list->tail = elem->prev;

        /* reset element pointers */
    elem->prev = elem->next = NULL;

    /* don't forget to change the number of elements in the list */
        --list->cnt;
}