-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Richard Kaye
Sent: 19 December 2006 12:41
To: [EMAIL PROTECTED]
Subject: Re: Polling App
We have someagent programs that do just this. A timer wakes them up
periodically and they check for any work to do
-sample and it's
workable though it needs some work to implement it in a real-world app.
Sietse
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jaime Vasquez
Sent: woensdag 20 december 2006 5:19
To: [EMAIL PROTECTED]
Subject: Re: Polling App
Sietse
That's basically the same as option 2. I was concerned that VFP would hog
too much of the system resources and hoping someone would have experience of
a similar situation and could advise me if it does.
John Weller
01380 723235
07976 393631
Write a small simple VFP program that utilitizes the
John Weller wrote:
That's basically the same as option 2. I was concerned that VFP would hog
too much of the system resources and hoping someone would have experience of
a similar situation and could advise me if it does.
Hi John,
I run a kind of polling app that services email and print
John,
Christof wrote a wonderful article in FoxPro Advisor that explains how
to do exactly what you want to do. Complete with code!
I think there may be similar code up on www.news2news.com? Worth
checking out.
Malcolm
snip
Monitor File Changes from Visual FoxPro
John: I have several different apps that do this sort of thing. One runs
as a service on a server.
Here is the main program of the project:
* turn off NT login services
=SYS(2340, 1)
*normal setup stuff
DO SetEnv
ON ERROR DO errhand WITH ;
ERROR( ), MESSAGE( ), MESSAGE(1), PROGRAM( ),
Write a small simple VFP program that utilitizes the VFP timer, and then
turn it off while in your processing routine (when the flag condition is
met), then turn it back on as you exit the processing routine. What's
wrong with that idea? Is this one of those if it sounds too good to be
true,
We have someagent programs that do just this. A timer wakes them up
periodically and they check for any work to do. They run 24/7/365. On
one server we are currently running 7 instances. 0 CPU while sleeping.
Each one uses a little over 1MB of RAM while idle.
John Weller wrote:
That's
Nick,
We have an app that essentially does this, except we don't turn the timer off
while processing. The problem with this approach is that it frequently hangs,
and since it is written in FoxPro it has to run in the foreground. That is
why we are in the process of re-writing it as a .Net
Richard Kaye wrote:
We have someagent programs that do just this. A timer wakes them up
periodically and they check for any work to do. They run 24/7/365.
I've always wondered why people use expressions like that. I can
understand 24/7, 24/7/52 (almost), 24/365 (or more precisely 24/365.25
Sorry. Didn't mean to be obscure. 24 hours a day, 7 days a week, 365
days a year.
Now it's time for someone to point out that I'm taking off leap day... g
Paul Newton wrote:
I've always wondered why people use expressions like that. I can
understand 24/7, 24/7/52 (almost), 24/365 (or more
On 12/19/06, Richard Kaye [EMAIL PROTECTED] wrote:
Sorry. Didn't mean to be obscure. 24 hours a day, 7 days a week, 365
days a year.
Now it's time for someone to point out that I'm taking off leap day... g
he already did...or more precisely 24/365.25
g),
A+
jml
John,
I've used option #1 as a more simplistic approach to this type of thing.
To avoid the problem you mentioned, I use an OS semaphore to indicate that
the program is running. It sets the semaphore, pauses, then checks that it
has the only semaphore set. If so, it continues. If not,
.
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On
Behalf Of Jean Laeremans
Sent: Tuesday, December 19, 2006 10:09 AM
To: [EMAIL PROTECTED]
Subject: Re: Polling App
On 12/19/06, Richard Kaye [EMAIL PROTECTED] wrote:
Sorry. Didn't mean to be obscure. 24 hours a day, 7 days a week
On 12/19/06, Jim Dettman [EMAIL PROTECTED] wrote:
he already did...or more precisely 24/365.25
Actually, he didn't, or at least not precisely. The year is not quite
365.25, which is why every 100 years, if a year is divisible by 4, it is not
a leap year, except when it is divisible by
Sietse Wijnker wrote:
Another solution I'm also using is a small .NET app that reacts to evnts and
writes a message to a message-queue which in its turn is monitored by a VFP
application.
I did something like this years ago in the late 90s where I devised a
solution for running MS-Word Mail
Nick Cipollina wrote:
Write a small simple VFP program that utilitizes the VFP timer, and then
turn it off while in your processing routine (when the flag condition is
met), then turn it back on as you exit the processing routine. What's
wrong with that idea? Is this one of those if it
Malcolm Greene wrote:
Calvin Hsia's blog has code that allows you to build NT services using
VFP.
I did this several years ago with VFP 7 and VFP 8 with excellent
results.
There's no reason why you shouldn't be able to build robust NT Services
using VFP.
Except that it's not cool to
Sietse Wijnker wrote:
I'm using filesystem events to react to a file create/change in similar
cases.
The only problem is binding to them, but I've written a .NET ActiveX thet
does that for me. Use that inside a VFP form and I'm able to write VFP code
to react to the events.
The vfp9's
I'm using filesystem events to react to a file create/change in similar
cases.
The only problem is binding to them, but I've written a .NET ActiveX thet
does that for me. Use that inside a VFP form and I'm able to write VFP code
to react to the events.
Another solution I'm also using is a small
John Weller wrote:
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.
= 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
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