Function activeDefragList

app/redis-6.2.6/src/defrag.c:292–323

Defrag a list of ptr, sds or robj string values */

/* Defrag a list of ptr, sds or robj string values */
long activeDefragList(list *l, int val_type) {
    long defragged = 0;
    listNode *ln, *newln;
    for (ln = l->head; ln; ln = ln->next) {
        if ((newln = activeDefragAlloc(ln))) {
            if (newln->prev)
                newln->prev->next = newln;
            else
                l->head = newln;
            if (newln->next)
                newln->next->prev = newln;
            else
                l->tail = newln;
            ln = newln;
            defragged++;
        }
        if (val_type == DEFRAG_SDS_DICT_VAL_IS_SDS) {
            sds newsds, sdsele = ln->value;
            if ((newsds = activeDefragSds(sdsele)))
                ln->value = newsds, defragged++;
        } else if (val_type == DEFRAG_SDS_DICT_VAL_IS_STROB) {
            robj *newele, *ele = ln->value;
            if ((newele = activeDefragStringOb(ele, &defragged)))
                ln->value = newele;
        } else if (val_type == DEFRAG_SDS_DICT_VAL_VOID_PTR) {
            void *newptr, *ptr = ln->value;
            if ((newptr = activeDefragAlloc(ptr)))
                ln->value = newptr, defragged++;
        }
    }
    return defragged;
}

/* Defrag a list of sds values and a dict with the same sds keys */
long activeDefragSdsListAndDict(list *l, dict *d, int dict_val_type) {