EPICS Re: Race condition during IOC startup?

Experimental Physics and Industrial Control System

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

Subject:	Re: Race condition during IOC startup?
From:	Michael Davidsaver <[email protected]>
To:	[email protected]
Date:	Fri, 22 Feb 2013 17:08:07 -0500

Have a look at 'initHooks.h'. This allows you to register to receive acallback at particular points during the IOC startup sequence. I'mguessing you want to wait for 'initHookAfterCallbackInit' or'initHookAfterCallbackInit'.


On 02/22/2013 05:00 PM, Zhang, Dehong wrote:

Hi,

I seem to have such a problem: when my IOC starts up, some of my records
want to callback almost immediately.  Then my IOC crashes, because the "onceQ"
related stuff are not created yet -- is this possible?

Is it safe to move the "scanInit" call in iocBuild to just before "initDrvSup"
(EPICS base 3.14.12, src/misc/iocInit.c)?

Thank you for your advices!  Best regards,
Dehong

References:: Race condition during IOC startup? Zhang, Dehong

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