Make ringbuffer more robust or improve usage comments #20
Description
Follow-up from #18 (comment)
The ring buffer does not support 0 as data value, but expects this as an end marker. Thus I wonder if rb_new()should do a r->base[0] = 0 to ensure it starts with an empty buffer. Or do a check that the buffer contains at least one NULL value of pre-filled buffers are also supported. Otherwise rb_poll_byte() would loop forever in the worst case.