=> Subject: Polling App => => Hi Guys, => => I have to write a small utility that will check for the => presence of a file or files in a particular folder every 5 => minutes or so. If any are there it does some processing on => them. It will probably run on the server. As I see it => there are two ways I can go: => => 1. Have a program that runs every 5 minutes triggered by => scheduler. Snag => arises if the processing takes more than 5 minutes (which => could possibly happen in the future). => => 2. Run the program continuously in a loop which will => process the files then => go to sleep for 5 minutes (using the API Sleep function). => Question - will this absorb much in the way of resources? => I've found the Fox to be very fast but a resource hog. => => Any comments or suggestions of a better way will be => gratefully received - I see no benefit in re-inventing the => wheel if someone has already tried something similar. => => TIA => => John Weller
I am with Michael on this ... create an invisible dummy form with a timer control and let it do all the work. There is another way, perhaps, and it depends on the answer to this question (which I do not know): How does Windows Explorer know when to update a directory listing or a tree listing, etc? Is there a specific API that triggers when a folder's contents change or is it simply a matter of polling? To me, the best solution would be one that eliminates the polling aspect and just idles until the mass storage manager has something to say. But I don't know if there is such an API. B+ HALinNY _______________________________________________ Post Messages to: ProFox@leafe.com Subscription Maintenance: http://leafe.com/mailman/listinfo/profox OT-free version of this list: http://leafe.com/mailman/listinfo/profoxtech ** All postings, unless explicitly stated otherwise, are the opinions of the author, and do not constitute legal or medical advice. This statement is added to the messages for those lawyers who are too stupid to see the obvious.
