Function _hpt_realloc

mem/test/test_malloc.c:104–152

}

static void _hpt_realloc(unsigned int frag_overhead)
{
	struct hpt_frag *f, *ret;
	ssize_t size;

	if (list_empty(&hpt_frags))
		return _hpt_malloc(frag_overhead);

	f = list_entry(hpt_frags.prev, struct hpt_frag, list);
	list_del(&f->list);

	hpt_my_used -= f->size;

	if (should_grow) {
		if (!check_limit() || f->size >= MY_MAX_USED) {
			should_grow = 0;
			goto out;
		}

		size = f->size + (rand() % HPT_FAC) * (HPT_MAX_ALLOC_SZ/HPT_FAC) + 1;
	} else {
		size = rand() % f->size + 1;
	}

	ret = REALLOC(f, sizeof *ret + size);
	if (!ret) {
		LM_ERR("oom\n");
		should_grow = 0;
		goto out;
	}
	memset(ret, -1, sizeof *ret + size);

	if ((unsigned long)ret % MEM_ALIGN == 0)
		aligned_reallocs++;

	ret->chunk = (void *)(ret + 1);
	ret->size = size;
	hpt_my_used += size;

	list_add(&ret->list, &hpt_frags);

	reallocs++;
	return;

out:
	FREE(f);
	frees++;
	fragments--;
}

#define hpt_malloc(frag_overhead) (rand() & 1 ? \
	_hpt_malloc(frag_overhead) : _hpt_realloc(frag_overhead))