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From: "Smark" <not.provided@all.com>
Newsgroups: comp.lang.ada,comp.os.vxworks
Subject: Re: redirecting the standard output
Date: Tue, 10 Apr 2001 11:46:16 -0500
Organization: Lockheed Martin Corporation
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Date: 2001-04-10T11:46:16-05:00
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"Martin Dowie" <martin.dowie@gecm.com> wrote in message
news:3ad31759$1@pull.gecm.com...
> This time with a subject... :-)
>
> Target System: PowerPC, AdaMULTI v1.8.9b, VxWorks 5.4
>
> How do I redirect the standard output? I'd like to redirect it to device
> "/null"
>
> Attempts:
>  Open (DevNull, Append_File, "/null");
>  Open (DevNull, "/null", "/null");
>
> just cause Status_Error, i.e. the device is already "open". So how can
> I then "Set_Output (DevNull);" without having the device object in
> File_Type form?..
>
>

I have also had problems redirecting Ada.Text_Io on the same platform.
When I use the applicable VxWorks calls, ioGlobalStdSet or ioTaskStdSet,
my printf's from C programs are redirected, but Ada.Text_Io seems to
be unaffected.  In my case, I'm trying to redirect IO to an open
socket.

The solution I'm toying with is making an Ada interface to printf.
Is there a better way to get Ada IO to respond to calls to the
above VxWorks functions?

One thing you might try, Martin, is to re-direct to "/null/0".

Cheers,
Mark