[jira] [Commented] (DAFFODIL-2626) Circular deadlock when computing stored length around prefixed-length elements

["Mike Beckerle (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DAFFODIL-2626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17504317#comment-17504317 ] 

Mike Beckerle commented on DAFFODIL-2626:
-----------------------------------------

Reverted the fix for this in 55f638de74edfa400ce6cba1de19162069c9298a

 

> Circular deadlock when computing stored length around prefixed-length elements
> ------------------------------------------------------------------------------
>
>                 Key: DAFFODIL-2626
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2626
>             Project: Daffodil
>          Issue Type: Bug
>          Components: Back End
>    Affects Versions: 3.2.1
>            Reporter: Mike Beckerle
>            Priority: Major
>
> I have a small schema with a messageLength element as the first element, which has outputValueCalc on the message payload.
> The message payload contains prefixed-length strings.
> I get a deadlock on unparsing:
> {code}
> org.apache.daffodil.tdml.TDMLExceptionImpl: (Implementation: daffodil) SuspensionDeadlockException: Runtime Schema Definition Error: Expressions/Unparsers are circularly deadlocked (mutually defined):
>  - SimpleTypeRetryUnparserSuspendableOperation for messageLength
>  - ElementUnusedUnparserSuspendableOperation for payload
>  - AlignmentFillUnparserSuspendableOperation for address
> Schema context: messageLength Location line 59 column 18 in file:/tmp/s__3044777217024912267.dfdl.xsd
> Data location was preceding byte 0
> {code}
> See test test_computedLengthAroundPrefixedLengths1u
> Test test_computedLengthAroundPrefixedLengths1p is the same thing, just testing the parse direction.



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