1.7.0: read() blocking with VMIN = VTIME = 0
daniel åkerud
daniel.akerud@gmail.com
Tue Jul 28 12:49:00 GMT 2009
On Tue, Jul 28, 2009 at 1:00 PM, daniel åkerud<daniel.akerud@gmail.com> wrote:
> With my example program below the read() is blocking even though
> canonical input is set and VMIN = VTIME = 0.
I mean non-canonical here. *ups*
> It is supposed to act in a non-blocking way.
>
And this is from the libc documentation:
http://www.gnu.org/s/libc/manual/html_node/Noncanonical-Input.html#Noncanonical-Input
17.4.10 Noncanonical Input
...
Both MIN and TIME are zero.
In this case, read always returns immediately with as many characters
as are available in the queue, up to the number requested. If no input
is immediately available, read returns a value of zero.
BR/Daniel
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