[messe]

> and for pipes, if both ends support using the ringbuffer they'll map the same ringbuffer

Is there planned to be a standardized way to signal to the other end of the pipe that ring buffers are supported, so this could be handled transparently in libc? If not, I don't really see what advantage it gets you compared to shared memory + a futex for synchronization—for pipes that is.

[immibis]

Presumably the same interface still works if the other side is using read/write.

[koverstreet]

correct