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<== Date ==> <== Thread ==>
Subject: RE: Call to assert failed - EPICS
From: "Hill, Jeff" <[email protected]>
To: Mark Rivers <[email protected]>, "'Pedro Mantovani Antunes'" <[email protected]>
Cc: "[email protected]" <[email protected]>
Date: Tue, 28 Jun 2016 02:12:42 +0000

Hello Pedro,

 

Another possibility is data structure corruption originating from an unrelated thread. Is a newly developed device support in use for this particular motor?

 

Another possibility is an issue occurring due to the put-callback completing asynchronously in a different thread. The VxWorks “i” and “tt <task id>” commands can be run against the suspended thread to get a stack trace which might be helpful with understanding the issue. If this happens on Linux the gdb debugger can be used for the same purpose using gdb commands “info threads”, “thread nnn”, and “bt” for displaying a thread’s back trace. You will need to attach to the running process with “gdb <executable name> <process id>” command.

 

Jeff

 

From: Mark Rivers [mailto:[email protected]]
Sent: Monday, June 27, 2016 2:37 PM
To: 'Pedro Mantovani Antunes'; Hill, Jeff
Cc: [email protected]
Subject: RE: Call to assert failed - EPICS

 

Hi Pedro,

 

I see that you are using a version of EPICS base (3.14.10) that is almost 8 years old.  It is possible you are hitting a bug that has already been fixed.

 

Can you update to the current 3.14.12.5 version?

 

Are you using pyEpics?  If so, are you using the latest version of that?

 

Mark

 

 

From: [email protected] [mailto:[email protected]] On Behalf Of Pedro Mantovani Antunes
Sent: Monday, June 27, 2016 3:04 PM
To: [email protected]
Cc: [email protected]
Subject: Call to assert failed - EPICS

 

Mr. Hill,

 

I’m currently working at MRCAT (Section 10) at APS developing a program in python to set up the EPICS motors to the desired positions.

However, I’m getting an error when trying to move one specific motor (bl_angle). Below is the error message I’m getting:

 

A call to “assert (_pTargetMutex == & mutexToVerify)” failed in ../../../include/epicsGuards.h line 84.

EPICS Release EPICS R3.14.10 $R3-14-10$ $2008/10/27 19:39:04$.

Current time Mon Jun 27 2016 14:37:28.098931195.

Please E-mail this message to Jeff Hill [email protected] or to [email protected]

Calling epicsThreadSuspendSelf()

 

 

Also, this error only occurs with this specific motor, others are working fine.

Do you have any idea what this error message might be?

 

Thank you,

Pedro Mantovani Antunes

Replies:
RE: Call to assert failed - EPICS Pedro Mantovani Antunes
References:
Call to assert failed - EPICS Pedro Mantovani Antunes
RE: Call to assert failed - EPICS Mark Rivers
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