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From: Roedy Green <see_website@mindprod.com.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: single instance
Date: Fri, 18 Jan 2013 01:47:55 -0800
Organization: Canadian Mind Products
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On Sat, 05 Jan 2013 19:49:08 -0800, Knute Johnson
<nospam@knutejohnson.com> wrote, quoted or indirectly quoted someone
who said :

>> // if we are seeing our own packet, do nothing
>>                  if ( theirTime == myTime )
>>                      {
>> </quote>
>>
>> Who can see a concurrency problem in that logic?

I have been working on polishing Knute's code. Mostly I have been
adding informal comments and renaming to help myself understand how it
works.

I have not run it yet, but it is getting close to a test.

see
https://wush.net/svn/mindprod/com/mindprod/singleinstance/SingleInstance.java

I have added UUIDs to break the tie for equal start times.
I have added app ids so different apps can share the same port.

I have added the ability avoid several different apps.
I have added the ability to permit two apps to run, so long as they
run on different files.
-- 
Roedy Green Canadian Mind Products http://mindprod.com
The first 90% of the code accounts for the first 90% of the development time.
The remaining 10% of the code accounts for the other 90% of the development 
time. 
~ Tom Cargill  Ninety-ninety Law