[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20190117015113.GM23599@brightrain.aerifal.cx>
Date: Wed, 16 Jan 2019 20:51:13 -0500
From: Rich Felker <dalias@...c.org>
To: musl@...ts.openwall.com
Subject: Re: mkfifo buffer exhibiting unexpected behaviour
On Wed, Jan 16, 2019 at 08:08:00PM -0500, Steven Hum wrote:
> Running this simple test using clock from sutils to produce a repeating one second interval input stream..
>
> mkfifo fifo
> clock -i 1 -sf "T> stream one" >fifo &
> clock -i 1 -sf "D> stream two" >fifo &
> cat fifo
>
> on void musl only the second fifo input stream is displayed.
> on void glibc, both input streams are displayed interleaved as expected.
>
> Are fifo buffers handled differently under musl?
No, aside from possible stdio buffering it's entirely a kernel matter.
I looked up the sutils source and see it's flushing after each output,
and tried it on an Alpine-based box here (with musl) and could not
reproduce what you're seeing. Both outputs are visible and roughly
interleaved (although their order sometimes swaps with scheduling, of
course).
Rich
Powered by blists - more mailing lists
Confused about mailing lists and their use?
Read about mailing lists on Wikipedia
and check out these
guidelines on proper formatting of your messages.
