Function stklist_push

lib/ff_memory.c:140–151

id: the id of element to be freed. return code: -1: faile; >=0:OK.

//id: the id of element to be freed.
//return code: -1: faile;  >=0:OK.
static inline int stklist_push(StackList_t *p,  const uint64_t val){
    int tail = 0;

    if (p==NULL)
        return -1;
    if (p->top < p->size){
        p->ele[p->top++] = val;
        return 0;
    }
    else
        return -1;
}

static inline int stklist_size(StackList_t * p)
{