On Mon, Sep 25, 2017 at 10:43 AM, Epperlein, Lutz (agendo) < lutz.epperl...@agendo.de> wrote:
> A question: > What other approaches did you try to implement a logging feature using > preemptive threads. I'm pretty sure there is something buried in the > threads of this mailinglist but I'm not able to find it. > > I would very likely have used files and an external collector...but this didn't work out. Within 15 minutes of trying this, I discovered that it's *very* easy to throw 4D into a fatal race condition when rolling log files. (It's also possible in cooperative mode, for that matter.) I created a database that reproduces the error within about a minute of running. Submitted and, I'm told, accepted during version 16.0. Since then, zero news and no change. So, for now, I can't rely on files because there is *no* way to log to files if you can't safely roll them without bringing down the server. On macOS, I saw the system pushing errors and launching workers over and over until I had to force quit it. Wayne Stewart tried it out on Windows where it crashed 4D. This is for a Windows deployment, for what it's worth. ********************************************************************** 4D Internet Users Group (4D iNUG) FAQ: http://lists.4d.com/faqnug.html Archive: http://lists.4d.com/archives.html Options: http://lists.4d.com/mailman/options/4d_tech Unsub: mailto:4d_tech-unsubscr...@lists.4d.com **********************************************************************
