Thanks to Eric for pointing this out, I was not aware of it.
I have just made 2 changes to the asyn module to enable I/O redirection using both the "dbior" and "asynReport" commands.
I tested it with an areaDetector driver and it seems to work fine:
epics> dbior > dbior.out
epics> asynReport > asynReport.out
This is now committed to the Subversion repository, where it can be accessed from the Web, and it will be in the R4-19 release.
The asynTrace command already has a more powerful I/O redirection capability:
asynSetTraceFile portName addr filename
This allows one to redirect the trace (debugging) output at the level of a specific device, i.e. a single motor axis, etc.
Mark
-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Eric Norum
Sent: Tuesday, March 13, 2012 4:23 PM
To: Allison, Stephanie
Cc: EPICS Tech Talk
Subject: Re: iocshCmd, redirection, and function pointers
For I/O redirection to work a source file must include epicsStdioRedirect.h.
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
>
--
Eric Norum
[email protected]
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