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Re: open()ing a named pipe with no current readers
On Fri, Jun 15, 2018 at 01:35:17PM +0200, Edgar Fu? wrote:
> I guess that's a rater silly/basic question, but ...
> Is there a way to open(.. O_WRONLY ..) an existing named pipe that
> currently has no reader such that
> -- the open() will neither block nor fail
> -- subsequent write()s to that fd will
> -- succeeed if someone started reading in the meantime
> -- block/return EWOULDBLOCK if still no-one is reading
> Of course there's the work-around of lazily open()ing the fd before each
> write() call.
Won't O_NONBLOCK cover this?
I don't think you can distinguish "buffer is full right now" from "no
Depending on what you're doing you might want a stream socket instead
of a pipe.
David A. Holland
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