From: Joe Shaw <joeshaw@novell.com> (?)

Write process ID into lock file to aid debugging stale locks

--- Lucene.Net/Store/FSDirectory.cs.orig	2005-10-02 09:49:19.000000000 +0100
+++ Lucene.Net/Store/FSDirectory.cs	2005-10-02 09:52:42.000000000 +0100
@@ -75,6 +75,9 @@ namespace Lucene.Net.Store
                 try
                 {
                     System.IO.FileStream createdFile = lockFile.Create();
+					System.IO.StreamWriter writer = new System.IO.StreamWriter (createdFile);
+					writer.WriteLine (System.Diagnostics.Process.GetCurrentProcess().Id);
+					writer.Close ();
                     createdFile.Close();
                     return true;
                 }