Robert,

To deal with that, I will de-activate the task item while it is running and
then reactivate when the task is done.

Or maybe I put an is_running flag on the record such that my pseudo code is
like this:

* Query for tasks that are active, need to be executed (by date), and are
NOT currently running.
* Loop over tasks
* For each:
--- Update DB record for is_running = 1
--- Execute task
--- Update DB record for is_running = 0

It might seem like an overhead, but once you get it working nicely, its
quite nice.


On Mon, Apr 6, 2009 at 3:58 PM, Robert Harrison
<[email protected]>wrote:

>
> > For something like this, I generally have a scheduled task for a given
> application that executes every 5 minutes (or whatever is appropriate).
>
> I may be able to do this. Sound feasible.
>
> Now here's the next thought. How can I tell if a program is already running
> in an application? It’s possible the program could be running already on
> the
> next scheduled run. If that's true, I don't want to start a second
> occurrence.
>
> How can I tell if the program is already executing and ensure only one
> occurrence of the program runs?
>
> I don't see anything on that in the documentation, although, I may not be
> looking in the right place. I looked at CFTHREAD, but that does not look
> like it deals with multiple invocations of the same program.
>
> Thanks
>
> Robert B. Harrison
> Director of Interactive Services
> Austin & Williams
> 125 Kennedy Drive, Suite 100
> Hauppauge NY 11788
> P : 631.231.6600 Ext. 119
> F : 631.434.7022
> http://www.austin-williams.com
>
> Great advertising can't be either/or.  It must be &.
>
> Plug in to our blog: A&W Unplugged
> http://www.austin-williams.com/unplugged
>
>
> 

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