Lucene.Net.Index.IndexWriter.CloseInternal C# (CSharp) Method

		private void CloseInternal(bool waitForMerges)
		{
			
			docWriter.PauseAllThreads();
			
			try
			{
				if (infoStream != null)
					Message("now flush at close");
				
				docWriter.Dispose();
				
				// Only allow a new merge to be triggered if we are
				// going to wait for merges:
				if (!hitOOM)
				{
					Flush(waitForMerges, true, true);
				}
				
				if (waitForMerges)
				// Give merge scheduler last chance to run, in case
				// any pending merges are waiting:
					mergeScheduler.Merge(this);
				
				mergePolicy.Close();
				
				FinishMerges(waitForMerges);
				stopMerges = true;
				
				mergeScheduler.Close();
				
				if (infoStream != null)
					Message("now call final commit()");
				
				if (!hitOOM)
				{
					Commit(0);
				}
				
				if (infoStream != null)
					Message("at close: " + SegString());
				
				lock (this)
				{
					readerPool.Dispose();
					docWriter = null;
					deleter.Dispose();
				}
				
				if (writeLock != null)
				{
					writeLock.Release(); // release write lock
					writeLock = null;
				}
				lock (this)
				{
					closed = true;
				}
			}
			catch (System.OutOfMemoryException oom)
			{
				HandleOOM(oom, "closeInternal");
			}
			finally
			{
				lock (this)
				{
					closing = false;
					System.Threading.Monitor.PulseAll(this);
					if (!closed)
					{
						if (docWriter != null)
							docWriter.ResumeAllThreads();
						if (infoStream != null)
							Message("hit exception while closing");
					}
				}
			}
		}