Function usage

lib_acl_cpp/samples/aio/aio_echo/main.cpp:114–120

};

static void usage(const char* procname)
{
	printf("usage: %s -h[help]\r\n"
		" -s listen_addr\r\n"
		" -k[use kernel event: epoll/iocp/kqueue/devpool]\n",
		procname);
}

int main(int argc, char* argv[])
{