RE: Only one instance of program.

I see you have already gotten a number of good ideas.  I have a few more to
add.

Most of the ideas have suggested using a cl command to allocate some other
object.  Keep in mind that programs are allocateable objects, too.  The
object you try to allocate exclusively can be the very program you want to
limit to one instance.  Kind of keeps it neat and tidy.

Another trick we have used for programs with a display file is to work with
object lock.  The calling cl will look to see if there is an object lock on
the display file.  Doesn't have to be exclusive lock, it just has to come up
when you run the command.  Of course, this method requires a lot more coding
to complete since you have to dump the results of the command into a file
and read that file seeking the name of the display file in question.

Hth.

Rick Weber | TЯU International 


-----Original Message-----
From: Venkateshwar [mailto:venkateshwar.raman@xxxxxxxxx] 
Sent: Wednesday, November 09, 2005 6:37 AM
To: rpg400-l@xxxxxxxxxxxx
Subject: Only one instance of program.



Hi,

 

Is there anyway by which I can ensure that only one instance of a program is
running? This program generates a number and there is chance that it can be
called by 2 programs to generate number and there is a chance both can get
same number.

 

Regards,

Venky.





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