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POLog4Net doesn't release resources
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copied!<p>I have a DLL file which does Log4Net logging to a a file. There is a process which loads the DLL and can create multiple instances of the DLL.</p> <p>Each instance of a DLL has to create a separate log file. Therefore I do all the Log4Net configuration programatically.</p> <p>I've used some help from <a href="https://stackoverflow.com/questions/1519728/programmatically-adding-and-removing-log-appenders-in-log4net">here.</a></p> <p>Here is my code:</p> <pre><code>public class LogHelper { private PatternLayout _layout = new PatternLayout(); private const string LOG_PATTERN = "%date %-5level - %message%newline"; private String Configuration; public static string DefaultPattern { get { return LOG_PATTERN; } } public ILog log = null; public LogHelper(String configuration) { Configuration = configuration; InitialiseLogger(); _layout.ConversionPattern = DefaultPattern; _layout.ActivateOptions(); Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); hierarchy.Configured = true; hierarchy.LevelMap.Add(log4net.Core.Level.Debug); hierarchy.LevelMap.Add(log4net.Core.Level.Critical); hierarchy.LevelMap.Add(log4net.Core.Level.Info); hierarchy.LevelMap.Add(log4net.Core.Level.Warn); hierarchy.LevelMap.Add(log4net.Core.Level.Error); hierarchy.LevelMap.Add(log4net.Core.Level.Fatal); } ~LogHelper() { log.Debug("Closing myself down"); IAppender[] appenders = log.Logger.Repository.GetAppenders(); //appenders are empty log.Logger.Repository.Shutdown(); } public void InitialiseLogger() { Hierarchy hierarchy = (Hierarchy)LogManager.GetRepository(); Logger newLogger = hierarchy.GetLogger(Configuration) as Logger; PatternLayout patternLayout = new PatternLayout(); patternLayout.ConversionPattern = LOG_PATTERN; patternLayout.ActivateOptions(); RollingFileAppender roller = new RollingFileAppender(); roller.Layout = patternLayout; roller.AppendToFile = true; roller.RollingStyle = RollingFileAppender.RollingMode.Size; roller.MaxSizeRollBackups = 4; roller.MaximumFileSize = "10MB"; String name = String.Format("-{0:yyyy-MM-dd_HH-mm-ss}", DateTime.Now); roller.File = "C:\\Logs\\" + Configuration + name + ".log"; roller.ImmediateFlush = true; roller.ActivateOptions(); newLogger.AddAppender(roller); log = LogManager.GetLogger(Configuration); } </code></pre> <p>The problem is that log.Debug("Closing myself down"); is not logged to a log file; I know it is being called. And the log files never get released, unless I stop the process that loads my DLL0, and I do not want to stop it.</p> <p>A link from <a href="https://stackoverflow.com/questions/5892916/proper-way-to-shutdown-a-logger-instance-in-log4net">here</a> explains how to shutdown appenders. But the problem is that in my destructor a call to log.Logger.Repository.GetAppenders(); returns an empty array.</p> <p>How should I solve it?</p> <p>Just a note: the process that loads my DLL is from 3rd party and I don't know the internals of it.</p>

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