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http://jira.qos.ch/browse/LBCLASSIC-175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11484#action_11484
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Torsten Juergeleit commented on LBCLASSIC-175:
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>From http://blogs.sun.com/jrose/entry/longjumps_considered_inexpensive :
The most costly part of exception processing on the JVM is creating the
exception, not throwing it. Exception creation involves a native method named
Throwable.fillInStackTrace, which looks down the stack (before the actual
throw) and puts a whole backtrace into the exception object. It's great for
debugging, but a terrible waste if all you want to do is pop a frame or two.
> 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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