tty(4), ICANON, read timeouts

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1 total messages Started by Michael Brown Fri, 07 Nov 1986 18:11

#66

Author: Michael Brown
Date: Fri, 07 Nov 1986 18:11

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I've tried to use the read timeout feature of the AT&T tty interface and
have failed so far.  I've kludged around it, but would really like to
use timeouts.  The symptom is that the read never seems to timeout.

I've used this mechanism on Unisoft sysV unix so I think I know what I'm
doing. :)

We're running RTU3.0 [Regular or 3.0A or 3.0B? -- sob].

[Does this problems occur with the HPSM, jmux and the CPU ports?
I know that on the HPSM reads sometimes screw up when some event is triggered
by a signal (see release notes for RTHPSM Version 2.0) -- sob ]

If anyone has a working example, I'd sure like to see it.


Another oddity is that I have to set the EOF & EOL chars in the c_cc
array for the nonblocking read mode (ala fcntl) to work.


	Regards,
	Mike Brown		Biomedical Computer Laboratory
				Institute for Biomedical Computing
				Washington Univ., St. Louis, MO

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