[
https://issues.apache.org/jira/browse/LOG4J2-1341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15220035#comment-15220035
]
Gary Gregory commented on LOG4J2-1341:
--------------------------------------
Todo: check that the classes in the done list are documented to be GC-free and
meant to be kept that way.
> (GC) Avoid allocating temporary objects in Pattern Converters for
> PatternLayout
> -------------------------------------------------------------------------------
>
> Key: LOG4J2-1341
> URL: https://issues.apache.org/jira/browse/LOG4J2-1341
> Project: Log4j 2
> Issue Type: Improvement
> Components: Pattern Converters
> Affects Versions: 2.5
> Reporter: Remko Popma
>
> *To do*
> The following pattern converters can be modified to avoid creating temporary
> objects in their {{format}} method:
> * AbstractStyleNameConverter
> * EncodingPatternConverter
> * EqualsIgnoreCaseReplacementConverter
> * EqualsReplacementConverter
> * FullLocationPatternConverter
> * HighlightConverter
> * IntegerPatternConverter
> * MarkerPatternConverter
> * MaxLengthConverter
> * RelativeTimePatternConverter
> * SequenceNumberPatternConverter
> * StyleConverter
> *Investigate*
> The following pattern converters may be difficult to modify since they rely
> on JDK components that create temporary objects:
> * ExtendedThrowablePatternConverter
> * MapPatternConverter
> * MdcPatternConverter
> * NdcPatternConverter
> * RegexReplacementConverter
> * RootThrowablePatternConverter
> * ThrowablePatternConverter
> * UuidPatternConverter
> * VariablesNotEmptyReplacementConverter
> *Done*
> The following pattern converters already do not allocate temporary objects in
> their format method:
> * ClassNamePatternConverter
> * DatePatternConverter
> * FileLocationPatternConverter
> * LevelPatternConverter
> * LineLocationPatternConverter
> * LineSeparatorPatternConverter
> * LiteralPatternConverter (unless literal contains '${')
> * LoggerPatternConverter
> * MarkerSimpleNamePatternConverter
> * MessagePatternConverter
> * MethodLocationPatternConverter
> * NamePatternConverter
> * NanoTimePatternConverter
> * ThreadIdPatternConverter
> * ThreadNamePatternConverter
> * ThreadPriorityPatternConverter
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: log4j-dev-unsubscr...@logging.apache.org
For additional commands, e-mail: log4j-dev-h...@logging.apache.org
