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Access_ISABUS.HTP.Method should be in the Global namespace #165

Closed GoogleCodeExporter closed 9 years ago

GoogleCodeExporter commented 9 years ago 
I noticed that Access_ISABUS.HTP.Method is created in the incorrect namespace.  
It's in Local and should be in Global.
If you look at 
http://www.techpowerup.com/wiki/doku.php/systool/mutexes_to_avoid_collisions 
you will see most others have corrected their code.
I have added OHM to the list of programs, please update the entry once the code 
has been updated to use Global. If you need any help please e-mail me directly.
Regards, Ray
http://rh-software.com/

Original issue reported on code.google.com by r...@rh-software.com on 9 Feb 2011 at 9:35

GoogleCodeExporter commented 9 years ago 
For best compatibility, should we acquire both the Local and the Global mutex? 
Or does acquiring the Global mutex also block any application using the Local 
mutex? 

The code on the techPowerUp wiki suggests to use the Local mutex if it already 
exists. But this could cause problems if there are other programs that use the 
Global mutex only.

A which supports only Local creates a Local mutex 
B which supports Local and Global just opens the Local, because it exists alreay
C which support only Global creates a Global because no Global exists so far

Or are there any situations where Local and Global are actually the same, and 
acquiring both would cause the application to dead lock?

Original comment by moel.mich on 10 Feb 2011 at 11:36

GoogleCodeExporter commented 9 years ago 
[deleted comment]
GoogleCodeExporter commented 9 years ago 
a) On most XP systems there is only one namespace, so you can't have both.
b) The only totally reliable solution is for ALL programs to use Global.
c) By using Local if Local exists on startup locking will work if a 3rd program 
is then started and just uses Glocal then things will not work.
d) On W95 and NT4 you can't have a prefix.
e) On W2K and later Local\Access_ISABUS.HTP.Method and Access_ISABUS.HTP.Method 
are the same.
f) AFAIK most programs have been changed to unconditionally use Global.

Original comment by r...@rh-software.com on 10 Feb 2011 at 3:42

GoogleCodeExporter commented 9 years ago 
This issue was closed by revision r293.

Original comment by moel.mich on 15 Mar 2011 at 5:55