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<== Date ==> <== Thread ==>
Subject: Re: Trying to use elauncher: _main_ thread failed
From: "Crisp, Daniel via Tech-talk" <tech-talk at aps.anl.gov>
To: "Hu, Yong" <yhu at bnl.gov>, "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>, "anj at anl.gov" <anj at anl.gov>
Cc: "Barofsky, Daniel" <barofsky at nscl.msu.edu>
Date: Tue, 7 Dec 2021 19:13:16 +0000

Ah, I hadn't realized it was davidsaver who'd made this one too. I knew he'd developed pydevsup, which I use elsewhere.


So I did declare the bo correctly, but realized I was still getting the error even when I removed my .db file with the launcher bo. It was as if it was looking for @python ... or info(cmd, "...") for all my non-launcher bo's too. Turns out it was the order in which I added lines to my src/Makefile that was the issue. <myioc>_DBD+= had to be grouped with similar lines. It now seems to be working.


Thank you for the link Yong! I couldn't find anything when I searched for more information.

From: Hu, Yong <yhu at bnl.gov>
Sent: Tuesday, December 7, 2021 11:46:06 AM
To: Crisp, Daniel; tech-talk at aps.anl.gov
Cc: Barofsky, Daniel
Subject: Re: Trying to use elauncher: _main_ thread failed
 
[EXTERNAL] This email originated from outside of FRIB

That program was developed by Michael Davidsaver at NSLS-2 many years ago. How do you load you *.db file in your st.cmd? You need a ‘bo’ record similar to this:

https://github.com/NSLS-II/elauncher/blob/main/elauncherApp/Db/elauncher.db

 

Yong

 

From: Tech-talk <tech-talk-bounces at aps.anl.gov> on behalf of "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Reply-To: "Crisp, Daniel" <CrispD at nscl.msu.edu>
Date: Monday, December 6, 2021 at 4:04 PM
To: "tech-talk at aps.anl.gov" <tech-talk at aps.anl.gov>
Cc: "Barofsky, Daniel" <barofsky at nscl.msu.edu>
Subject: Trying to use elauncher: _main_ thread failed

 

I don't see much documentation about what we call 'elauncher' here, so I'm thinking it might be something site specific? In any case, It's what we use to add PVs that trigger python scripts to our IOCs. I've attached the source code we add to our src/ folder. We also have an elaunchSupport.dbd file that simply contains two lines 'device(bo, INST_IO, devLauncher, "Launcher")'' and 'variable(launcherVerbose, int)'.

 

I'm getting an error when attempting to start the IOC, and I'm wondering if someone here could enlighten me as to the problem:

 

```

A call to 'assert(prec->out.type == INST_IO)' by thread '_main_' failed in ../launcher.c line 80.

Dumping a stack trace of thread '_main_':

[    0x7f95a3285283]: /lib/x86_64-linux-gnu/libCom.so.3.15.8(epicsStackTrace+0x73)

[    0x7f95a327e7af]: /lib/x86_64-linux-gnu/libCom.so.3.15.8(epicsAssert+0x4f)

[    0x5604d5f29b2f]: ../../bin/linux-x86_64/hlc_s800(add_record+0x4f)

[    0x7f95a3309ea7]: /lib/x86_64-linux-gnu/libdbCore.so.3.15.8(coreRelease+0x837)

[    0x7f95a330a10a]: /lib/x86_64-linux-gnu/libdbCore.so.3.15.8(iocBuild+0x1a)

[    0x7f95a330a299]: /lib/x86_64-linux-gnu/libdbCore.so.3.15.8(iocInit+0x9)

[    0x7f95a32700fb]: /lib/x86_64-linux-gnu/libCom.so.3.15.8(gphDump+0x125b)

[    0x5604d5f1fea2]: ../../bin/linux-x86_64/hlc_s800(main+0x12)

[    0x7f95a309e09b]: /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb)

[    0x5604d5f1fefa]: ../../bin/linux-x86_64/hlc_s800(_start+0x2a)

EPICS Release EPICS R3.15.8-2+0~20201111173402.6+debian10~1.gbp133abb.

Local time is 2021-12-04 14:33:29.880008830 EST

Please E-mail this message to the author or to tech-talk at aps.anl.govCalling epicsThreadSuspendSelf()

```

 

 

 

 

References:
Trying to use elauncher: _main_ thread failed Crisp, Daniel via Tech-talk
Re: Trying to use elauncher: _main_ thread failed Hu, Yong via Tech-talk
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