C# Discussion Boards - CodeProject

7-Sep-04 1:15

hi,

How can i know my dotnet application is not responding.
thanks
Blush | :O

**************************
S r e e j i t h N a i r
**************************

Roland Bär7-Sep-04 1:32

7-Sep-04 1:32

You can implement a "hearbeat" functionality:

An application is waiting for a hearbeat signal from your application and alarms if the heartbeat does not come after a certain time. Your application has then to create this heartbeat signal regularly (maybe in the working thread). The heartbeat signal can be a pipe or socket connection or something like that.

Hope that helps.

Greets
Roland

sreejith ss nair7-Sep-04 1:36

7-Sep-04 1:36

hi,
i am hearing this thing first time. How ? Where ? i start working on this new idea (for me)

**************************
S r e e j i t h N a i r
**************************

Roland Bär7-Sep-04 2:17

7-Sep-04 2:17

Sorry, but i haven't any Code that I can give to you, but I try to explain you the mechanism a little bit more specific.

The idea is to have a TCP/IP Connection between the Application thats needed to be observed (lets call it "Application A") and the Application that will observe Application A and create an alarm (Application B).

One application should be an "server" (create a socket and start listening) while the other should be the "client" (create a socket and connect to the server). When the connection between the two applications is established, you can send periodically (ex. all 10 seconds) messages from Application A to Application B (ex. "alive"). When Application B does not get an "alive" message 20 seconds after the last "alive" message, Application B should create an alarm, stop and restart Application A or do something else.

If you haven't worked with sockets under C# have a look at the various articles here on codeproject.

Hope you will get with this information a step further.

Greets
Roland

sreejith ss nair7-Sep-04 2:23

7-Sep-04 2:23

here nothing like two application.

My doubt is how i will know once my application is under "Not responding mode". I have only one application

**************************
S r e e j i t h N a i r
**************************

leppie7-Sep-04 2:37

leppie

7-Sep-04 2:37

No appilcation can know whether its not responding, how can it when it is not responding?

^{top secret
Download xacc-ide 0.0.3 now!
See some screenshots}

sreejith ss nair7-Sep-04 2:43

7-Sep-04 2:43

ha ha ..

So. Suppose if i am writing some service which will monitor my application status at regular interval.

**************************
S r e e j i t h N a i r
**************************

Roland Bär7-Sep-04 2:55

7-Sep-04 2:55

That was the idea my responses ... (The service will be "Application B")

Sorry for being not clear enough.

Greets
Roland

sreejith ss nair7-Sep-04 3:03

7-Sep-04 3:03

hi,
thanks a lot for your responce. And i will try my level best to do something.

**************************
S r e e j i t h N a i r
**************************

mav.northwind7-Sep-04 4:39

mav.northwind

7-Sep-04 4:39

An application is marked as "not responding" if it's not processing windows messages for a given time.
This can occur because your main (GUI-)thread is performing a long-running action.
In that case you _can_ do something like monitor your application.

First step would be to fork out the possibly not responding functionality to a separate thread that can be monitored and aborted if it hasn't finished in a given time.

Regards,
mav

sreejith ss nair7-Sep-04 4:44

7-Sep-04 4:44

hi
mav.northwind wrote
An application is marked as "not responding" if it's not processing windows messages for a given time

What you mean by Marking ?

See i can't long running process. Cause it is pulrly depend on users who is using this s/w. If i want to mark then i need to mark all.

If i wrote some service then upto how much extend i will help me?

I am not at all good in service but still i can manage.

**************************
S r e e j i t h N a i r
**************************

mav.northwind7-Sep-04 5:21

mav.northwind

7-Sep-04 5:21

I meant the TaskManager showing an application as "not responding".

Or are you talking about a different sort of "not responding"? Confused | :confused:

sreejith ss nair7-Sep-04 5:31

7-Sep-04 5:31

hi,
Did you read the entire thred related to this heading ? Blush | :O

I will tell i want to know if my dotnet application is "not responding state". For that purpose what we can do is, we can write a paraell service which will monitor my application on a regular interval.

I am not that much good in Service. But still i can manage.

What is your idea ? Any better idea than this or can i go for a service. Is so which service i want to write.

**************************
S r e e j i t h N a i r
**************************

mav.northwind7-Sep-04 5:43

mav.northwind

7-Sep-04 5:43

Yes, I read the thread, and I think you want to find out _within_ your application why it is not responding. So the core question is: What is your application doing while it's "not responding"? What steps are causing your application not to respond?

If you can identify these actions then you can execute them in a separate thread, so that your application itself will no longer hang, only this specific thread, so there'd be no need for a separate monitoring service.

mav

Roland Bär21-Sep-04 21:59