[logback-dev] [JIRA] Commented: (LBCLASSIC-175) ILoggingEvent prepareForDeferredProcessing does not include callerDataArray

[Torsten Juergeleit (JIRA)]

    [ http://jira.qos.ch/browse/LBCLASSIC-175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11483#action_11483 ] 

Torsten Juergeleit commented on LBCLASSIC-175:
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> " new Throwable()" is cheap

Sorry, I'm not buying that calling Throwable.fillInStackTrace() for every single logging event is "cheap" (at least not cpu-wise).
And I'm not buying that storing a stack trace within every logging event (whether or not the caller data is calculated later on) is "cheap" (memory-wise, gc-wise) as well.



> ILoggingEvent prepareForDeferredProcessing does not include callerDataArray
> ---------------------------------------------------------------------------
>
>                 Key: LBCLASSIC-175
>                 URL: http://jira.qos.ch/browse/LBCLASSIC-175
>             Project: logback-classic
>          Issue Type: Bug
>          Components: layout
>            Reporter: Konstantin Alexandrov
>            Assignee: Logback dev list
>
> I've implement asynchronous file appender, and enqueue events, but %caller pattern can not be used in the case of
> deferred processing becouse caller information is losed. My suggestion is to create Throwable object in prepareForDeferredProcessing 

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