[Info-vax] counting-lock ?

[Marty Kuhrt]

Pierre wrote:
> hi,
> 
> I have a DECnet object which can serve various known queries on a
> database. these queries are resource consuming and I don't want more
> than (say) n=5 of them of the same type to run at the same time. I
> want the other one to be queued up for further processing.

Is this something that could be done with the queue manager?

Set up a special queue for the resource and set the queue job limit 
(/JOB_LIMIT=5).  If something is submitted, and five are executing, it 
will wait.  If a job completes or dies (assuming it doesn't hang), then 
the next job in line gets run.

Marty