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Subject: Re: Does EPICS Base support multi-thread on vxWorks 6.3?
From: lorna.zhang@ni.com
To: Andrew Johnson <anj@aps.anl.gov>
Cc: tech-talk@aps.anl.gov
Date: Tue, 10 May 2011 11:38:51 +0800

Andrew,

What is a munch file? Why doesn't my bin\vxWorks-ppc603 folder include a vxTestHarness.munch file?

What is and how to link all the vxWorks binaries into a single .munch file??

Let me know.

Thanks,

Lorna Zhang


From: Andrew Johnson <anj@aps.anl.gov>
To: lorna.zhang@ni.com
Cc: "Jeff Hill" <johill@lanl.gov>, tech-talk@aps.anl.gov
Date: 05/05/2011 11:40 PM
Subject: Re: Does EPICS Base support multi-thread on vxWorks 6.3?





Hi Lorna,

On Thursday 05 May 2011 04:41:57 lorna.zhang@ni.com wrote:
> Okay, now it seems the thread local storage epics implemented for
> vxWorks (in vxWorks\osdThread.c) is not working.
>
> When I'm calling ca_context_create from a second worker thread in a single
> process, I'll get the first context (which was created by the first worker
> thread) returned by epicsThreadPrivateGet.

Can you try running the libCom test suite into your vxWorks system and running
it.  Instead of booting an IOC, load the bin/vxWorks-*/vxTestHarness.munch
file from Base for your architecture and run the command epicsRunLibComTests
to execute all of the tests, or for the epicsThreadPrivate facility alone you
would run the command epicsThreadPrivateTest.  If what you say above is
correct then that test will fail.

However I have an explanation if that test does not fail; I think the problem
you're seeing might be caused by loading two copies of libCom into the IOC,
which will definitely *not* work properly.  If your startup script loads more
than one .munch file, only the first one you load should be linked against the
$(EPICS_BASE_IOC_LIBS).  I usually recommend that you link all of your vxWorks
binaries into a single .munch file, but you can load multiple files as long
you're careful how you build them.

HTH,

- Andrew
--
An error is only a mistake if you don't learn from it.
When you learn something from it, it becomes a lesson.



Replies:
Re: Does EPICS Base support multi-thread on vxWorks 6.3? Andrew Johnson
References:
Does EPICS Base support multi-thread on vxWorks 6.3? lorna . zhang
RE: Does EPICS Base support multi-thread on vxWorks 6.3? lorna . zhang
Re: Does EPICS Base support multi-thread on vxWorks 6.3? Andrew Johnson

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