Threading logical problem??

**Armin Zingler** · Nov 20 '05, 12:02 PM

Re: Threading logical problem??

"James A Taber" <icecool_6@hotm ail.com> schrieb[color=blue]
> What I want to implement is to restart certain thread every 24
> hours...
>
> sample code:
>
> [...]
> Trace.WriteLine (T(i).ThreadSta te.ToString) '<----
> Unstarted ??[/color]

As long as *this* thread runs, the other one might still be unstarted, but
the OS will start it when it is it's turn.
[color=blue]
> Next
>
> End Sub[/color]

Maybe I did not understand the problem, yet. Isn't starting a
System.Timers.T imer sufficient?

--
Armin

404 Not Found

http://www.plig.net/nnq/nquote.html

How do I quote correctly in Usenet?

http://www.netmeister.org/news/learn2quote.html

**James A Taber** · Nov 20 '05, 12:02 PM

Re: Threading logical problem??

Hi Armin,

Thanks for you reply,

The timer works fine... what I am experiencing is that somtimes some of the
thread seams to stop working ... thats why I want to restart all the threads
in the application after a certain time....

-James A Taber

"Armin Zingler" <az.nospam@free net.de> wrote in message
news:%233ycEFd2 DHA.1764@TK2MSF TNGP10.phx.gbl. ..[color=blue]
> "James A Taber" <icecool_6@hotm ail.com> schrieb[color=green]
> > What I want to implement is to restart certain thread every 24
> > hours...
> >
> > sample code:
> >
> > [...]
> > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----
> > Unstarted ??[/color]
>
> As long as *this* thread runs, the other one might still be unstarted, but
> the OS will start it when it is it's turn.
>[color=green]
> > Next
> >
> > End Sub[/color]
>
> Maybe I did not understand the problem, yet. Isn't starting a
> System.Timers.T imer sufficient?
>
>
> --
> Armin
>
> http://www.plig.net/nnq/nquote.html
> http://www.netmeister.org/news/learn2quote.html
>[/color]

**Jay B. Harlow [MVP - Outlook]** · Nov 20 '05, 12:02 PM

Re: Threading logical problem??

James,
In addition to Armin's comments, have you tried using Thread.Sleep(0) to
give the second thread a chance to start?

Something like:[color=blue]
> T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> contains a timer to do the required task.
> T(i).Start()[/color]

Thread.Sleep(0)
[color=blue]
>
> Trace.WriteLine (T(i).ThreadSta te.ToString) '<---- Unstarted ??[/color]

Its not that your second thread did not start as much as your first thread
is not sharing the CPU. ;-)

Also in addition to restarting threads, you may want to consider restarting
AppDomains also.

Hope this helps
Jay

"James A Taber" <icecool_6@hotm ail.com> wrote in message
news:e33uS6c2DH A.2184@TK2MSFTN GP12.phx.gbl...[color=blue]
> What I want to implement is to restart certain thread every 24 hours...
>
> sample code:
>
> Dim T() As Thread
> Dim L() As Lib1.Class1
> Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
> System.EventArg s) Handles Button1.Click
>
> Dim i As Integer = 0
> For i = 0 To 2
>
> ReDim Preserve T(i)
> ReDim Preserve L(i)
>
> L(i) = New Lib1.Class1
> L(i).m1 = i
>
> T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> contains a timer to do the required task.
> T(i).Start()
>
> Trace.WriteLine (T(i).ThreadSta te.ToString) '<---- Unstarted ??
> Next
>
> End Sub
>
>
>
>
>
>
>[/color]

**James A Taber** · Nov 20 '05, 12:02 PM

Re: Threading logical problem??

Hi Jay,

I have tried use Sleep(3000) but it didnt make any difference ... is it
possible that the timer in Class1 one is running in its own thread?

hm... restart Appdomain ? how can I do that ?

is this true --> Restart Appdomain = Initialize Application

James A Taber

"Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in message
news:esuk3cd2DH A.2556@TK2MSFTN GP10.phx.gbl...[color=blue]
> James,
> In addition to Armin's comments, have you tried using Thread.Sleep(0) to
> give the second thread a chance to start?
>
> Something like:[color=green]
> > T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> > contains a timer to do the required task.
> > T(i).Start()[/color]
>
> Thread.Sleep(0)
>[color=green]
> >
> > Trace.WriteLine (T(i).ThreadSta te.ToString) '<---- Unstarted[/color][/color]
??[color=blue]
>
> Its not that your second thread did not start as much as your first thread
> is not sharing the CPU. ;-)
>
> Also in addition to restarting threads, you may want to consider[/color]
restarting[color=blue]
> AppDomains also.
>
> Hope this helps
> Jay
>
> "James A Taber" <icecool_6@hotm ail.com> wrote in message
> news:e33uS6c2DH A.2184@TK2MSFTN GP12.phx.gbl...[color=green]
> > What I want to implement is to restart certain thread every 24 hours...
> >
> > sample code:
> >
> > Dim T() As Thread
> > Dim L() As Lib1.Class1
> > Private Sub Button1_Click(B yVal sender As System.Object, ByVal e As
> > System.EventArg s) Handles Button1.Click
> >
> > Dim i As Integer = 0
> > For i = 0 To 2
> >
> > ReDim Preserve T(i)
> > ReDim Preserve L(i)
> >
> > L(i) = New Lib1.Class1
> > L(i).m1 = i
> >
> > T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> > contains a timer to do the required task.
> > T(i).Start()
> >
> > Trace.WriteLine (T(i).ThreadSta te.ToString) '<---- Unstarted[/color][/color]
??[color=blue][color=green]
> > Next
> >
> > End Sub
> >
> >
> >
> >
> >
> >
> >[/color]
>
>[/color]

**Jay B. Harlow [MVP - Outlook]** · Nov 20 '05, 12:02 PM

Re: Threading logical problem??

James,[color=blue]
> is it
> possible that the timer in Class1 one is running in its own thread?[/color]
Hard to say as you don't say what type of timer is in Class1. Remember there
are 3 distinct Timer classes in .NET.

Hope this helps
Jay

"James A Taber" <icecool_6@hotm ail.com> wrote in message
news:us6CY2d2DH A.4032@tk2msftn gp13.phx.gbl...[color=blue]
> Hi Jay,
>
> I have tried use Sleep(3000) but it didnt make any difference ... is it
> possible that the timer in Class1 one is running in its own thread?
>
> hm... restart Appdomain ? how can I do that ?
>
> is this true --> Restart Appdomain = Initialize Application
>
> James A Taber
>
>
> "Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in message
> news:esuk3cd2DH A.2556@TK2MSFTN GP10.phx.gbl...[color=green]
> > James,
> > In addition to Armin's comments, have you tried using Thread.Sleep(0) to
> > give the second thread a chance to start?
> >
> > Something like:[color=darkred]
> > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> > > contains a timer to do the required task.
> > > T(i).Start()[/color]
> >
> > Thread.Sleep(0)
> >[color=darkred]
> > >
> > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color][/color][/color]
Unstarted[color=blue]
> ??[color=green]
> >
> > Its not that your second thread did not start as much as your first[/color][/color]
thread[color=blue][color=green]
> > is not sharing the CPU. ;-)
> >
> > Also in addition to restarting threads, you may want to consider[/color]
> restarting[color=green]
> > AppDomains also.
> >
> > Hope this helps
> > Jay
> >
> > "James A Taber" <icecool_6@hotm ail.com> wrote in message
> > news:e33uS6c2DH A.2184@TK2MSFTN GP12.phx.gbl...[color=darkred]
> > > What I want to implement is to restart certain thread every 24[/color][/color][/color]
hours...[color=blue][color=green][color=darkred]
> > >
> > > sample code:
> > >
> > > Dim T() As Thread
> > > Dim L() As Lib1.Class1
> > > Private Sub Button1_Click(B yVal sender As System.Object, ByVal e[/color][/color][/color]
As[color=blue][color=green][color=darkred]
> > > System.EventArg s) Handles Button1.Click
> > >
> > > Dim i As Integer = 0
> > > For i = 0 To 2
> > >
> > > ReDim Preserve T(i)
> > > ReDim Preserve L(i)
> > >
> > > L(i) = New Lib1.Class1
> > > L(i).m1 = i
> > >
> > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> > > contains a timer to do the required task.
> > > T(i).Start()
> > >
> > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color][/color][/color]
Unstarted[color=blue]
> ??[color=green][color=darkred]
> > > Next
> > >
> > > End Sub
> > >
> > >
> > >
> > >
> > >
> > >
> > >[/color]
> >
> >[/color]
>
>[/color]

**Jay B. Harlow [MVP - Outlook]** · Nov 20 '05, 12:02 PM

Re: Threading logical problem??

James,
Yes restarting an AppDomain is effectively the same as re-initializing your
app, however you can control what parts of your app are running in which
AppDomain.

I don't have a clean example, to "restart" an AppDomain, you need to create
a new AppDomain and start execution there, letting the current one finish. I
would start by looking at the System.AppDomai n class and its Load & Unload
methods...

Hope this helps
Jay

"James A Taber" <icecool_6@hotm ail.com> wrote in message
news:us6CY2d2DH A.4032@tk2msftn gp13.phx.gbl...[color=blue]
> Hi Jay,
>
> I have tried use Sleep(3000) but it didnt make any difference ... is it
> possible that the timer in Class1 one is running in its own thread?
>
> hm... restart Appdomain ? how can I do that ?
>
> is this true --> Restart Appdomain = Initialize Application
>
> James A Taber
>
>
> "Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in message
> news:esuk3cd2DH A.2556@TK2MSFTN GP10.phx.gbl...[color=green]
> > James,
> > In addition to Armin's comments, have you tried using Thread.Sleep(0) to
> > give the second thread a chance to start?
> >
> > Something like:[color=darkred]
> > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> > > contains a timer to do the required task.
> > > T(i).Start()[/color]
> >
> > Thread.Sleep(0)
> >[color=darkred]
> > >
> > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color][/color][/color]
Unstarted[color=blue]
> ??[color=green]
> >
> > Its not that your second thread did not start as much as your first[/color][/color]
thread[color=blue][color=green]
> > is not sharing the CPU. ;-)
> >
> > Also in addition to restarting threads, you may want to consider[/color]
> restarting[color=green]
> > AppDomains also.
> >
> > Hope this helps
> > Jay
> >
> > "James A Taber" <icecool_6@hotm ail.com> wrote in message
> > news:e33uS6c2DH A.2184@TK2MSFTN GP12.phx.gbl...[color=darkred]
> > > What I want to implement is to restart certain thread every 24[/color][/color][/color]
hours...[color=blue][color=green][color=darkred]
> > >
> > > sample code:
> > >
> > > Dim T() As Thread
> > > Dim L() As Lib1.Class1
> > > Private Sub Button1_Click(B yVal sender As System.Object, ByVal e[/color][/color][/color]
As[color=blue][color=green][color=darkred]
> > > System.EventArg s) Handles Button1.Click
> > >
> > > Dim i As Integer = 0
> > > For i = 0 To 2
> > >
> > > ReDim Preserve T(i)
> > > ReDim Preserve L(i)
> > >
> > > L(i) = New Lib1.Class1
> > > L(i).m1 = i
> > >
> > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<--- Class1
> > > contains a timer to do the required task.
> > > T(i).Start()
> > >
> > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color][/color][/color]
Unstarted[color=blue]
> ??[color=green][color=darkred]
> > > Next
> > >
> > > End Sub
> > >
> > >
> > >
> > >
> > >
> > >
> > >[/color]
> >
> >[/color]
>
>[/color]

**James A Taber** · Nov 20 '05, 12:03 PM

Re: Threading logical problem??

Thanks for helping me out Jay...

This is the Timer iam using

System.Timers.T imer

I will look more into the Appdomain "feature" later tonigh...

Thanks again
-James A Taber

"Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in message
news:uNGEvUe2DH A.2528@TK2MSFTN GP10.phx.gbl...[color=blue]
> James,[color=green]
> > is it
> > possible that the timer in Class1 one is running in its own thread?[/color]
> Hard to say as you don't say what type of timer is in Class1. Remember[/color]
there[color=blue]
> are 3 distinct Timer classes in .NET.
>
> Hope this helps
> Jay
>
> "James A Taber" <icecool_6@hotm ail.com> wrote in message
> news:us6CY2d2DH A.4032@tk2msftn gp13.phx.gbl...[color=green]
> > Hi Jay,
> >
> > I have tried use Sleep(3000) but it didnt make any difference ... is[/color][/color]
it[color=blue][color=green]
> > possible that the timer in Class1 one is running in its own thread?
> >
> > hm... restart Appdomain ? how can I do that ?
> >
> > is this true --> Restart Appdomain = Initialize Application
> >
> > James A Taber
> >
> >
> > "Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in[/color][/color]
message[color=blue][color=green]
> > news:esuk3cd2DH A.2556@TK2MSFTN GP10.phx.gbl...[color=darkred]
> > > James,
> > > In addition to Armin's comments, have you tried using Thread.Sleep(0)[/color][/color][/color]
to[color=blue][color=green][color=darkred]
> > > give the second thread a chance to start?
> > >
> > > Something like:
> > > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<---[/color][/color][/color]
Class1[color=blue][color=green][color=darkred]
> > > > contains a timer to do the required task.
> > > > T(i).Start()
> > >
> > > Thread.Sleep(0)
> > >
> > > >
> > > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color][/color]
> Unstarted[color=green]
> > ??[color=darkred]
> > >
> > > Its not that your second thread did not start as much as your first[/color][/color]
> thread[color=green][color=darkred]
> > > is not sharing the CPU. ;-)
> > >
> > > Also in addition to restarting threads, you may want to consider[/color]
> > restarting[color=darkred]
> > > AppDomains also.
> > >
> > > Hope this helps
> > > Jay
> > >
> > > "James A Taber" <icecool_6@hotm ail.com> wrote in message
> > > news:e33uS6c2DH A.2184@TK2MSFTN GP12.phx.gbl...
> > > > What I want to implement is to restart certain thread every 24[/color][/color]
> hours...[color=green][color=darkred]
> > > >
> > > > sample code:
> > > >
> > > > Dim T() As Thread
> > > > Dim L() As Lib1.Class1
> > > > Private Sub Button1_Click(B yVal sender As System.Object, ByVal e[/color][/color]
> As[color=green][color=darkred]
> > > > System.EventArg s) Handles Button1.Click
> > > >
> > > > Dim i As Integer = 0
> > > > For i = 0 To 2
> > > >
> > > > ReDim Preserve T(i)
> > > > ReDim Preserve L(i)
> > > >
> > > > L(i) = New Lib1.Class1
> > > > L(i).m1 = i
> > > >
> > > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<---[/color][/color][/color]
Class1[color=blue][color=green][color=darkred]
> > > > contains a timer to do the required task.
> > > > T(i).Start()
> > > >
> > > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color][/color]
> Unstarted[color=green]
> > ??[color=darkred]
> > > > Next
> > > >
> > > > End Sub
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> > >[/color]
> >
> >[/color]
>
>[/color]

**Jay B. Harlow [MVP - Outlook]** · Nov 20 '05, 12:06 PM

Re: Threading logical problem??

James,
System.Timers.T imer will raise its event in a new thread (via the
ThreadPool), there is no need to create a thread to explicitly handle it.

For details on the Timers.Timer and the other 2 timers in .NET check out
this recent article:

Microsoft Learn: Build with answers in reach

http://msdn.microsoft.com/msdnmag/issues/04/02/TimersinNET/default.aspx

Find official documentation, practical know-how, and expert guidance for builders working and troubleshooting in Microsoft products.

Hope this helps
Jay

"James A Taber" <icecool_6@hotm ail.com> wrote in message
news:eJR7C2e2DH A.1272@TK2MSFTN GP12.phx.gbl...[color=blue]
> Thanks for helping me out Jay...
>
> This is the Timer iam using
>
> System.Timers.T imer
>
> I will look more into the Appdomain "feature" later tonigh...
>
> Thanks again
> -James A Taber
>
>
> "Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in message
> news:uNGEvUe2DH A.2528@TK2MSFTN GP10.phx.gbl...[color=green]
> > James,[color=darkred]
> > > is it
> > > possible that the timer in Class1 one is running in its own thread?[/color]
> > Hard to say as you don't say what type of timer is in Class1. Remember[/color]
> there[color=green]
> > are 3 distinct Timer classes in .NET.
> >
> > Hope this helps
> > Jay
> >
> > "James A Taber" <icecool_6@hotm ail.com> wrote in message
> > news:us6CY2d2DH A.4032@tk2msftn gp13.phx.gbl...[color=darkred]
> > > Hi Jay,
> > >
> > > I have tried use Sleep(3000) but it didnt make any difference ... is[/color][/color]
> it[color=green][color=darkred]
> > > possible that the timer in Class1 one is running in its own thread?
> > >
> > > hm... restart Appdomain ? how can I do that ?
> > >
> > > is this true --> Restart Appdomain = Initialize Application
> > >
> > > James A Taber
> > >
> > >
> > > "Jay B. Harlow [MVP - Outlook]" <Jay_Harlow_MVP @msn.com> wrote in[/color][/color]
> message[color=green][color=darkred]
> > > news:esuk3cd2DH A.2556@TK2MSFTN GP10.phx.gbl...
> > > > James,
> > > > In addition to Armin's comments, have you tried using[/color][/color][/color]
Thread.Sleep(0)[color=blue]
> to[color=green][color=darkred]
> > > > give the second thread a chance to start?
> > > >
> > > > Something like:
> > > > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<---[/color][/color]
> Class1[color=green][color=darkred]
> > > > > contains a timer to do the required task.
> > > > > T(i).Start()
> > > >
> > > > Thread.Sleep(0)
> > > >
> > > > >
> > > > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color]
> > Unstarted[color=darkred]
> > > ??
> > > >
> > > > Its not that your second thread did not start as much as your first[/color]
> > thread[color=darkred]
> > > > is not sharing the CPU. ;-)
> > > >
> > > > Also in addition to restarting threads, you may want to consider
> > > restarting
> > > > AppDomains also.
> > > >
> > > > Hope this helps
> > > > Jay
> > > >
> > > > "James A Taber" <icecool_6@hotm ail.com> wrote in message
> > > > news:e33uS6c2DH A.2184@TK2MSFTN GP12.phx.gbl...
> > > > > What I want to implement is to restart certain thread every 24[/color]
> > hours...[color=darkred]
> > > > >
> > > > > sample code:
> > > > >
> > > > > Dim T() As Thread
> > > > > Dim L() As Lib1.Class1
> > > > > Private Sub Button1_Click(B yVal sender As System.Object, ByVal[/color][/color][/color]
e[color=blue][color=green]
> > As[color=darkred]
> > > > > System.EventArg s) Handles Button1.Click
> > > > >
> > > > > Dim i As Integer = 0
> > > > > For i = 0 To 2
> > > > >
> > > > > ReDim Preserve T(i)
> > > > > ReDim Preserve L(i)
> > > > >
> > > > > L(i) = New Lib1.Class1
> > > > > L(i).m1 = i
> > > > >
> > > > > T(i) = New Thread(AddressO f L(i).StartTimer ) '<---[/color][/color]
> Class1[color=green][color=darkred]
> > > > > contains a timer to do the required task.
> > > > > T(i).Start()
> > > > >
> > > > > Trace.WriteLine (T(i).ThreadSta te.ToString) '<----[/color]
> > Unstarted[color=darkred]
> > > ??
> > > > > Next
> > > > >
> > > > > End Sub
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >[/color]
> >
> >[/color]
>
>[/color]

Threading logical problem??

Threading logical problem??

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