Re: Stable application (non-stop, non-hanging...)

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From: Daniel Moth (dmoth74_at_hotmail.com)
Date: 12/16/04 

Date: Thu, 16 Dec 2004 15:54:34 -0000

You can have a CF app watchdogging another CF app it is just my suggestion
that the dog is an eVC app. Why? Well it doesn't feel right to use CF for a
blind process (the dog doesn't have any GUI) which you want to be as light
as possible (you don't want to complicate it to the extent where you need a
dog for the dog) and which would mostly include pinvokes (waiting on event
in a loop, restarting process/unit).

Here is the direct link to my IPC blog entry (I guess I need a search
feature for my site):
http://www.danielmoth.com/Blog/2004/09/ipc-with-cf-on-ce-part-1.html
http://www.danielmoth.com/Blog/2004/09/ipc-with-cf-on-ce-part-2.html

I specifically suggest named events.

Cheers
Daniel 

-- 
http://www.danielmoth.com/Blog/
"Tod Johnson" <todjohnson@bcd.com> wrote in message 
news:%23GTGZW44EHA.924@TK2MSFTNGP14.phx.gbl...
> Thank you Daniel fot your answer. Can you tell me the reason of C 
> watchdog? Why it can't be written on C# for CF.NET? And how could be 
> implemented IPC on CF.NET 1.0?
>
> Daniel Moth wrote:
>> Yes, create a separate watchdog process. From your main application 
>> "kick" it (some prefer to say "stroke", "pet" etc) on a certain interval. 
>> If the watchdog does not receive a kick within a certain interval, it 
>> takes the action you specified as per your requirements (restart app, 
>> restart unit etc). Your kick can simply be setting an event (check out 
>> the IPC post on my blog for details on that); you should definitely do it 
>> from your main (UI) thread and depending on your requirements do it from 
>> other threads too.
>>
>> I have implemented the above for my app (again details on my blog) on our 
>> CE-based unit. The watchdog is a C app which itself kicks the hardware 
>> watchdog on our board. I will blog about the mechanism soon but the above 
>> should be all you need.
>>
>> Cheers
>> Daniel

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