Why Timer stop working ?

[Daniele Piccinini]

Hallo,

I've writed a C# windows service in VS 2003.
This service use a System.Timers.Timer to periodically call some functions
of a web service.
( Some of this functions required minutes to be executed ).
The timer interval is 1 sec, and each functions 'counts' his number of timer
clock to know when it must be executed.
Sometimes happen that the service don't do his works. I stop the service and
watching the log i note thath the timer has stop 'clocking' some hour ago
( i save the last clock datetime in TmrSystem_Elapsed event handler and i
log this value in the service OnStop function ).
Someone have an idea ?

Thanks.

- Dany -

The code ..

private void TmrSystem_Elapsed(object sender, System.Timers.ElapsedEventArgs
e)
{
DtmLastClock = System.DateTime.Now;

if ( NumFunction1_TimerSteps > 0 )
{
NumFunction1_StepsCount++;

if ( !BolFunction1_Lock && NumFunction1_StepsCount >=
NumFunction1_TimerSteps )
{
BolFunction1_Lock = true;
NumFunction1_StepsCount = 0;
this.Function1();
BolFunction1_Lock = false;
}
}

if ( NumFunction2_TimerSteps > 0 )
{
NumFunction2_StepsCount++;

if ( !BolFunction2_Lock && NumFunction2_StepsCount >=
NumFunction2_TimerSteps )
{
BolFunction2_Lock = true;
NumFunction2_StepsCount = 0;
this.Function2();
BolFunction2_Lock = false;
}
}
}

 

[John Duval]

Hallo,

I've writed a C# windows service in VS 2003.
This service use a System.Timers.Timer to periodically call some functions
of a web service.
( Some of this functions required minutes to be executed ).
The timer interval is 1 sec, and each functions 'counts' his number of timer
clock to know when it must be executed.
Sometimes happen that the service don't do his works. I stop the service and
watching the log i note thath the timer has stop 'clocking' some hour ago
( i save the last clock datetime in TmrSystem_Elapsed event handler and i
log this value in the service OnStop function ).
Someone have an idea ?

Thanks.

- Dany -

The code ..

private void TmrSystem_Elapsed(object sender, System.Timers.ElapsedEventArgs
e)
{
DtmLastClock = System.DateTime.Now;

if ( NumFunction1_TimerSteps > 0 )
{
NumFunction1_StepsCount++;

if ( !BolFunction1_Lock && NumFunction1_StepsCount >=
NumFunction1_TimerSteps )
{
BolFunction1_Lock = true;
NumFunction1_StepsCount = 0;
this.Function1();
BolFunction1_Lock = false;
}
}

if ( NumFunction2_TimerSteps > 0 )
{
NumFunction2_StepsCount++;

if ( !BolFunction2_Lock && NumFunction2_StepsCount >=
NumFunction2_TimerSteps )
{
BolFunction2_Lock = true;
NumFunction2_StepsCount = 0;
this.Function2();
BolFunction2_Lock = false;
}
}



}- Hide quoted text -

- Show quoted text -

Hi Daniele,
I'm not sure it applies to your situation, but you might want to check
out this article:
FIX: When a .NET Framework based application uses the
System.Threading.Timer class, the timer event may not be signaled in
the .NET Framework 1.1 SP1

http://support.microsoft.com/?id=900822

I ran into this a while back when I had timers that stopped firing.
Hope it helps,
John

 

[Daniele Piccinini]

Hi Daniele,
I'm not sure it applies to your situation, but you might want to check
out this article:
FIX: When a .NET Framework based application uses the
System.Threading.Timer class, the timer event may not be signaled in
the .NET Framework 1.1 SP1

http://support.microsoft.com/?id=900822

I ran into this a while back when I had timers that stopped firing.
Hope it helps,
John

Thank you John, the problem may be this.
The service is installed on Windows Server 2003 sbs sp1. Do i need to
install Windows server 2003 sp2 or (better) do you know if there is an
update of the framework ?
Thanks

- Dany -

 

[ktrvnbq02]

The service is installed on Windows Server 2003 sbs sp1. Do i need to
install Windows server 2003 sp2 or (better) do you know if there is an
update of the framework ?

Also see the following, which may be relevant to your situation:

BUG: The Elapsed event of the System.Timers.Timer class is not raised
in a Windows service

http://support.microsoft.com/kb/842793

(although I'm not sure I believe the commentary in the steps to repro
in that linked article.)


Matt

 

[Steven Cheng[MSFT]]

Thank for Matt's informative input.

Hi Daniele,

I think the further bug entry Matt has refered could be helpful to you:

#FIX: When a .NET Framework based application uses the
System.Threading.Timer class, the timer event may not be signaled in the
.NET Framework 1.1 SP1
http://support.microsoft.com/kb/900822/

If feel the problem you met is aligned to the bug entry, you can directly
contact the CSS (follow the link in the kb) and request for the hotfix.

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead



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[Mr. Arnold]

Hallo,

I've writed a C# windows service in VS 2003.
This service use a System.Timers.Timer to periodically call some functions
of a web service.
( Some of this functions required minutes to be executed ).
The timer interval is 1 sec, and each functions 'counts' his number of
timer clock to know when it must be executed.
Sometimes happen that the service don't do his works. I stop the service
and watching the log i note thath the timer has stop 'clocking' some hour
ago ( i save the last clock datetime in TmrSystem_Elapsed event handler
and i log this value in the service OnStop function ).
Someone have an idea ?

I don't like using Timers in a NT Service, because of the reasons you're
posting about.

I always spawn a thread and use a Thread.Sleep(wait time) in a While True
Loop to execute code on a timed basis in a NT Service application.

 

[Daniele Piccinini]

Thank you Steven. Now i contact the CSS and request for the hotfix.

- Dany -

 

[Daniele Piccinini]

Thank you Arnold, this is a good idea.

- Dany -