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

Subject: do flnk-ed sequences of records get interrupted?
From: Dennis Nicklaus <[email protected]>
To: [email protected]
Date: Wed, 03 Feb 2010 09:11:39 -0600
Can someone please explain a few more details about epics processing sequences of FLNK-ed records. Once an flnk-ed sequence begins, can/will another different flnked sequence begin?
Do I have to assume that unrelated (no shared PVs) flnk-ed series can/will run in parallel?
In our case, I have a series of records that implements several reads of a slow serial stream device, and associated other processing. I would like to protect against a user setting a PV that will cause a write to that same device before my series of reads is finished. Do I need to implement some protection? I do know about the statement in the StreadDevice manual that says, "The first out command in the protocol locks the device for exclusive access. That means that no other record can communicate with that device." But I think I'm looking for a different locking across a sequence of records.


Thanks!
Dennis



Replies:
Re: do flnk-ed sequences of records get interrupted? Andrew Johnson
Re: do flnk-ed sequences of records get interrupted? Tim Mooney

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