It does at more recent levels as several examples have shown.
What level of OS are you working with?

Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects

On Wed, May 15, 2024 at 12:07 PM James H. H. Lampert via MIDRANGE-L <
midrange-l@xxxxxxxxxxxxxxxxxx> wrote:

A semaphore (I've used the concept a number of times, and I've seen it
under that name in the Java documentation, but for some reason, I've
never associated the name with the concept) is of course the simplest
solution to the problem.

What I was suggesting the OS could do would be to provide an easy way
for a CL program to either know whether there was an active job under a
given name, or (even better) know whether a given program was in use,
thereby allowing the jobname or the program itself to function as a

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