What's Wrong With This Code (#12)

Tuesday, February 13, 2007

Joe Developer has been fired. Sacked. Terminated. Dismissed. Booted. "Dis-employed", if you will.

Before Joe left, he started to write one last piece of code. He was asked to write an HTTP Module in ASP.NET that will log some information, and will include the date and time when the application last started running. He learned his lesson in last week's misadventure (too little, too late), and made his DateTime field static, like so:

using System;

using System.Web;

public class LoggingModule : IHttpModule

{

    public void Init(HttpApplication context)

    {

        startTime = DateTime.Now;

    }

    public void Dispose()

    {

    }

    static DateTime startTime;

}

Joe's replacement, Estelle Hertz, has to finish the module Joe started. Estelle thinks Joe was off to a pretty good start and adds some event handlers, some logging code, and checks in her changes.

The testers are finding that the "start time" recorded by her module is drifting, but the event logs show the application is definitely not restarting.

Did Joe leave a bug behind?

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