Function heap_alloc

dpdk/lib/eal/common/malloc_heap.c:231–255

* Main function to allocate a block of memory from the heap. * It locks the free list, scans it, and adds a new memseg if the * scan fails. Once the new memseg is added, it re-scans and should return * the new element after releasing the lock. */

 * the new element after releasing the lock.
 */
static void *
heap_alloc(struct malloc_heap *heap, const char *type __rte_unused, size_t size,
		unsigned int flags, size_t align, size_t bound, bool contig)
{
	struct malloc_elem *elem;
	size_t user_size = size;

	size = RTE_CACHE_LINE_ROUNDUP(size);
	align = RTE_CACHE_LINE_ROUNDUP(align);

	/* roundup might cause an overflow */
	if (size == 0)
		return NULL;
	elem = find_suitable_element(heap, size, flags, align, bound, contig);
	if (elem != NULL) {
		elem = malloc_elem_alloc(elem, size, align, bound, contig);

		/* increase heap's count of allocated elements */
		heap->alloc_count++;

		asan_set_redzone(elem, user_size);
	}

	return elem == NULL ? NULL : (void *)(&elem[1]);
}

static void *
heap_alloc_biggest(struct malloc_heap *heap, const char *type __rte_unused,