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<== Date ==> <== Thread ==>

Subject: Re: iocshCmd, redirection, and function pointers
From: Dirk Zimoch <dirk.zimoch@psi.ch>
To: Eric Norum <wenorum@lbl.gov>
Cc: EPICS Tech Talk <tech-talk@aps.anl.gov>
Date: Wed, 14 Mar 2012 11:12:08 +0100
Eric Norum wrote:
For I/O redirection to work a source file must include epicsStdioRedirect.h.

This sucks.

It this is the case, I would say that there is something wrong with the EPICS redirection. Code should not need to know about its "environment". This contradicts any good programming practice.

Dirk


It's likely that lots of support modules and drivers have not yet done so.


On Mar 13, 2012, at 2:11 PM, Allison, Stephanie wrote:

Hello,

When using redirection of output to a file in iocshCmd where the command is one that calls report functions via function pointer like dbior:

iocshCmd("dbior > /dat/dbiorOutput")

the output file contains only the output (printf) from the dbior routine itself but not output (printf) from each driver (called using a function pointer in drvet).

Is this a limitation of the iocsh, mixing C and C++, or the non-thread-safeness (as advertised in the app dev guide) of iocshCmd?  Or am I doing something else wrong?  It  happens on linux-x86_64, RTEMS 4.9.4, and vxWorks 5.4.

Thank you,
Stephanie Allison





Replies:
Re: iocshCmd, redirection, and function pointers Eric Norum
References:
iocshCmd, redirection, and function pointers Allison, Stephanie
Re: iocshCmd, redirection, and function pointers Eric Norum

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