Function test_random_alloc_free

dpdk/app/test/test_malloc.c:736–783

#endif /* !RTE_EXEC_ENV_WINDOWS */

static int
test_random_alloc_free(void *_ __rte_unused)
{
	struct mem_list {
		struct mem_list *next;
		char data[0];
	} *list_head = NULL;
	unsigned i;
	unsigned count = 0;

	rte_srand((unsigned)rte_rdtsc());

	for (i = 0; i < N; i++){
		unsigned free_mem = 0;
		size_t allocated_size;
		while (!free_mem){
			const unsigned mem_size = sizeof(struct mem_list) + \
					rte_rand() % (64 * 1024);
			const unsigned align = 1 << (rte_rand() % 12); /* up to 4k alignment */
			struct mem_list *entry = rte_malloc(NULL,
					mem_size, align);
			if (entry == NULL)
				return -1;
			if (RTE_PTR_ALIGN(entry, align)!= entry)
				return -1;
			if (rte_malloc_validate(entry, &allocated_size) == -1
					|| allocated_size < mem_size)
				return -1;
			memset(entry->data, rte_lcore_id(),
					mem_size - sizeof(*entry));
			entry->next = list_head;
			if (rte_malloc_validate(entry, NULL) == -1)
				return -1;
			list_head = entry;

			count++;
			/* switch to freeing the memory with a 20% probability */
			free_mem = ((rte_rand() % 10) >= 8);
		}
		while (list_head){
			struct mem_list *entry = list_head;
			list_head = list_head->next;
			rte_free(entry);
		}
	}
	printf("Lcore %u allocated/freed %u blocks\n", rte_lcore_id(), count);
	return 0;
}

#define err_return() do { \
	printf("%s: %d - Error\n", __func__, __LINE__); \