int main()

in src/main.c [312:390]
61 lines of code
12 McCabe index (conditional complexity)

int main(int argc, char **argv)
{
	int err_code = NO_ERROR;
	cpu_set_t cpuset;
	struct ntttcp_test *test;
	struct ntttcp_test_endpoint *tep;

	/* catch SIGINT: Ctrl + C */
	if (signal(SIGINT, sig_handler) == SIG_ERR)
		PRINT_ERR("main: error when setting the disposition of the signal SIGINT");

	/*
	 * Set the SIGPIPE handler to SIG_IGN.
	 * This will prevent any socket or pipe write from causing a SIGPIPE signal.
	 */
	signal(SIGPIPE, SIG_IGN);

	print_version();
	test = new_ntttcp_test();
	if (!test) {
		PRINT_ERR("main: error when creating new test");
		exit(-1);
	}

	default_ntttcp_test(test);
	err_code = parse_arguments(test, argc, argv);
	if (err_code != NO_ERROR) {
		PRINT_ERR("main: error when parsing args");
		print_flags(test);
		free(test);
		exit(-1);
	}

	err_code = verify_args(test);
	if (err_code != NO_ERROR) {
		PRINT_ERR("main: error when verifying the args");
		print_flags(test);
		free(test);
		exit(-1);
	}

	prepare_logging(test->verbose, test->save_console_log, test->console_log_filename);

	if (test->verbose)
		print_flags(test);

	if (!check_resource_limit(test)) {
		PRINT_ERR("main: error when checking resource limits");
		free(test);
		exit(-1);
	}

	turn_off_light();

	if (test->cpu_affinity != -1) {
		CPU_ZERO(&cpuset);
		CPU_SET(test->cpu_affinity, &cpuset);
		PRINT_INFO("main: set cpu affinity");
		if (pthread_setaffinity_np(pthread_self(), sizeof(cpu_set_t), &cpuset) != 0)
			PRINT_ERR("main: cannot set cpu affinity");
	}

	if (test->daemon) {
		PRINT_INFO("main: run this tool in the background");
		if (daemon(0, 0) != 0)
			PRINT_ERR("main: cannot run this tool in the background");
	}

	if (test->client_role == true) {
		tep = new_ntttcp_test_endpoint(test, ROLE_SENDER);
		err_code = run_ntttcp_sender(tep);
	} else {
		tep = new_ntttcp_test_endpoint(test, ROLE_RECEIVER);
		err_code = run_ntttcp_receiver(tep);
	}

	free_ntttcp_test_endpoint_and_test(tep);
	return err_code;
}