Here is a list of all documented class members with links to the class documentation for each member: a -. ABS_TIME_DATE_FORMAT. Detailed Description. This is the central class in the log4cxx package. Most logging operations, except configuration, are done through this class. Logging Services. log4cxx project. About · Team · Documentation log4cxx Documentation. Version Short introduction to log4cxx · Logging macros.

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This capability assumes that the logging space, that is, the space of all possible logging statements, is categorized according to some developer-chosen criteria. AppenderSkeletonAppender setOption: The root logger can be assigned multiple appenders. Documenration – the assigned Levelcan be null. Like getLogger except that the type of logger instantiated depends on the type returned by the LoggerFactory makeNewLoggerInstance method of the factory parameter.

AppenderSkeletonAppender setLength: By default, it is set to false which means there will be no effort to extract the location information related to the event. Loggers have their additivity flag set to true by default.

AsyncAppender Class Reference

Remove all previously added appenders. Logger names are case-sensitive and they follow the hierarchical naming rule: A logger is said to be a parent of a child logger if there are no ancestors between itself and the descendant logger. Best of all, log4cxx has a gentle learning curve.

It provides precise context about a run of the application. Almost every large application includes its own logging or tracing API. If this logger is ERROR enabled, it proceeds to call all the registered appenders in this logger and also higher in the hierarchy depending on the value of the additivity flag.


WriterAppenderEvent resetConfiguration: Loggers, Appenders and Layouts Log4cxx has three main components: This instance is used for subsequent Logger creations within this configurator.

Logger Class Reference

Loggers are named entities. If a change or file creation is detected, then configFilename is read to configure log4j. To alleviate these concerns, log4cxx is log4ccxx to be reliable, fast and extensible.

If you are passing any of Level:: WaitAccess – w – wait: The Logger class is designed so that this method executes as quickly as possible.

AppenderSkeletonAppender setEvaluatorClass: The syntax of different configuration elements are discussed below. Add newAppender to the list of appenders of this Logger instance. LogManagerHierarchy sleep: Remove the appender with the name passed as parameter from the list of appenders. The LocationInfo option takes a boolean value. ThreadFileWatchdog subAppend: This integer value determines the maximum size of the bounded buffer.

Check whether this logger is enabled for a given Level passed as parameter. A custom level value can be specified in the form level classname. Set options for appender named “A2” A2 should be a RollingFileAppenderwith maximum file size of 10 MB using at most one backup file. Only appenders of “security” because the additivity flag in “security” lkg4cxx set to false. If this logger is WARN log4cxc, it proceeds to call all the registered appenders in this logger and also higher in the hierarchy depending on the value of the additivity flag.

The BufferSize option takes a non-negative integer value. Set the resource bundle to be used with localized logging method l7dlog. Bar – Did it again! Check whether this logger is enabled for the fatal Level.


The RemoteHost option takes a string value which should be the host name of the server where a SocketNode is running. Example An example configuration is given below. By default categories inherit their level from the hierarchy. The level variable need not be assigned a value in which case it is inherited form the hierarchy.

log4cxx – Documentation

Logger hierarchy The documentagion and foremost advantage of any logging API over plain std:: It can slow down an application. Logger – j – join: In case there is no bundle in the hierarchy then NULL is returned. Once inserted into the code, the generation of logging output requires no human intervention. Output will go to the appender’s of the root logger, A2 in this case.

Refer docukentation the documentation of PatternLayout for further information on the syntax of the ConversionPattern key.

The named appender is defined using the appender syntax defined above. The existing configuration is not cleared nor reset. As a result, the event that will be ultimately logged will likely to contain the wrong location information if present in the dofumentation format.

Print only messages of level WARN or above in the namespace com:: Log a message string with the WARN level.