[LOG4NET-484] System.ObjectDisposedException with FileAppender+InterProcessLock

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.2.13, 1.2.14, 1.2.15, 1.3.0
• Fix Version/s: 1.2.14
• Component/s: Appenders
• Flags: Patch, Important
• Assignee: Dominik Psenner
• Reporter: NN
• Created: 27/Oct/15 08:35
• Updated: 02/Nov/15 13:20
• Resolved: 01/Nov/15 16:32

Description

Configure lockingModel for InterProcessLock with RollingFileAppender.

app.config

<?xml version="1.0" encoding="utf-8"?>
<configuration>
	<configSections>
		<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
	</configSections>
	<log4net>
		<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
			<file type="log4net.Util.PatternString" value="test.log" />
			<encoding value="utf-8" />
			<appendToFile value="true"/>
			<rollingStyle value="Size"/>
			<maxSizeRollBackups value="10"/>
			<maximumFileSize value="1"/>
			<staticLogFileName value="true"/>
			<layout type="log4net.Layout.PatternLayout">
				<conversionPattern value="%d [%t] %-5p %c{2} - %m%n"/>
			</layout>
			<lockingModel type="log4net.Appender.FileAppender+InterProcessLock" />
		</appender>
		<root>
			<level value="INFO"/>
			<appender-ref ref="RollingFileAppender"/>
		</root>
	</log4net>
</configuration>

Make a log with roll :

Program.cs

using log4net;

namespace ConsoleApplication131
{
	class Program
	{
		static void Main(string[] args)
		{
			var log = LogManager.GetLogger(typeof(Program));
			log.Info("A");
			log.Info("A");
		}
	}
}

You get this one roll:

log4net:ERROR Failed to Close appender [RollingFileAppender]
System.ObjectDisposedException: Safe handle has been closed
   at System.Threading.WaitHandle.WaitOneNative(SafeWaitHandle waitHandle, UInt32 millisecondsTimeout, Boolean hasThreadAffinity, Boolean exitContext)
   at System.Threading.WaitHandle.WaitOne(Int64 timeout, Boolean exitContext)
   at log4net.Appender.FileAppender.InterProcessLock.AcquireLock()
   at log4net.Appender.FileAppender.LockingStream.AcquireLock()
   at log4net.Appender.FileAppender.WriteFooter()
   at log4net.Appender.TextWriterAppender.WriteFooterAndCloseWriter()
   at log4net.Appender.TextWriterAppender.Reset()
   at log4net.Appender.FileAppender.Reset()
   at log4net.Appender.TextWriterAppender.OnClose()
   at log4net.Appender.AppenderSkeleton.Close()
   at log4net.Util.AppenderAttachedImpl.RemoveAllAppenders()