Function pool_boundary

lib/pool_alloc.c:309–326

If the current extent doesn't have "len" free space in it, mark it as full * so that the next alloc will start a new extent. If len is (size_t)-1, this * bump will always occur. The function returns a boundary address that can * be used with pool_free_old(), or a NULL if no memory is allocated. */

 * bump will always occur.  The function returns a boundary address that can
 * be used with pool_free_old(), or a NULL if no memory is allocated. */
void *
pool_boundary(alloc_pool_t p, size_t len)
{
	struct alloc_pool *pool = (struct alloc_pool *)p;
	struct pool_extent *cur;

	if (!pool || !pool->extents)
		return NULL;

	cur = pool->extents;

	if (cur->free < len) {
		cur->bound += cur->free;
		cur->free = 0;
	}

	return PTR_ADD(cur->start, cur->free);
}

#define FDPRINT(label, value) \
	do { \