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Re: My app breaks when moved while running
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Re: My app breaks when moved while running


  • Subject: Re: My app breaks when moved while running
  • From: Stephen Hoffman <email@hidden>
  • Date: Fri, 08 Feb 2008 18:32:34 -0500
  • Organization: HoffmanLabs LLC

(Previous message was incomplete.  Please ignore.)

There is the potential here for a enhancement to Mac OS X, where the application files are locked as part of invoking the application. This sort of transparent and distributed locking is comparatively rare in Unix environments, but there are operating systems where this locking does occur.

Various attempts include:

http://freshmeat.net/projects/dlm/
http://opendlm.sourceforge.net/

Basically, the application activation would lock down the file(s) (or bundle) associated with the application, preventing modifications.

Some form of locking is likely present in the Xsan file system support, I'm not sufficiently familiar with that to post a reference.

I'd have to say that this particular sequence and this locking would be rather low on my list of application priorities. It's in the "if it hurts, don't do it" category. And yes, we do all have to deal with the sheer creativity of our user base. And once in a while, such creativity will cause the application to tip over.

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