Function usage

lib_acl_cpp/samples/dbuf/dbuf4/main.cpp:74–78

}

static void usage(const char* procname)
{
	printf("usage: %s -h [help] -n max -p pos -b nblock -c capacity"
		" -i incr\r\n", procname);
}

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