Function run_bench

kernel/generic/src/console/cmd.c:1413–1480

}

static bool run_bench(const test_t *test, const uint32_t cnt)
{
	uint32_t i;
	bool ret = true;
	uint64_t ucycles, kcycles;
	char usuffix, ksuffix;

	if (cnt < 1)
		return true;

	uint64_t *data = (uint64_t *) malloc(sizeof(uint64_t) * cnt);
	if (data == NULL) {
		printf("Error allocating memory for statistics\n");
		return false;
	}

	for (i = 0; i < cnt; i++) {
		printf("%s (%u/%u) ... ", test->name, i + 1, cnt);

		/*
		 * Update and read thread accounting
		 * for benchmarking
		 */
		irq_spinlock_lock(&TASK->lock, true);
		uint64_t ucycles0, kcycles0;
		task_get_accounting(TASK, &ucycles0, &kcycles0);
		irq_spinlock_unlock(&TASK->lock, true);

		/* Execute the test */
		test_quiet = true;
		const char *test_ret = test->entry();

		/* Update and read thread accounting */
		irq_spinlock_lock(&TASK->lock, true);
		uint64_t ucycles1, kcycles1;
		task_get_accounting(TASK, &ucycles1, &kcycles1);
		irq_spinlock_unlock(&TASK->lock, true);

		if (test_ret != NULL) {
			printf("%s\n", test_ret);
			ret = false;
			break;
		}

		data[i] = ucycles1 - ucycles0 + kcycles1 - kcycles0;
		order_suffix(ucycles1 - ucycles0, &ucycles, &usuffix);
		order_suffix(kcycles1 - kcycles0, &kcycles, &ksuffix);
		printf("OK (%" PRIu64 "%c user cycles, %" PRIu64 "%c kernel cycles)\n",
		    ucycles, usuffix, kcycles, ksuffix);
	}

	if (ret) {
		printf("\n");

		uint64_t sum = 0;

		for (i = 0; i < cnt; i++) {
			sum += data[i];