Handling Threads - Visual Basic .NET

tshad

I am writing a Service that will start up some threads and I am trying to
find a way to tell if the threads are still running or not?

Is there a good program that will show that threads a service or program has
running?

Part of my code is:
*************** *************** *************** *************** *************** **
Protected Overrides Sub OnStart(ByVal args() As String)
Dim oCredit1 As New CreditProcessor
'LogInfo("Credi tPoller Started")
myLog.WriteEntr y("Demo Service Started @ " & TimeStamp())

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
End Sub

Class CreditProcessor
Inherits CreditService
Public ThreadNumber As String

Public Sub ProcessCredit()
If debugging Then
DebugPoller("Po llAndHandleCred it() Starting Thread Number: " &
ThreadNumber)
End If

If debugging Then
DebugPoller("Po llAndHandleCred it() Exiting Thread Number: " &
ThreadNumber)
End If
End Sub
End Class
*************** *************** *************** *************** *******

The program just starts a thread that prints to a file that the thread is
starting and ending.

In this example, when the ProcesCredit() function exits - does that kill the
thread?

If not, how do I do that?

Thanks,

Tom

Dec 20 '06 #1

Subscribe Reply

960

Samuel Shulman

What about using variables as flags

These flags will be set to say True just before the thread finishes

The variable must be declared outside the thread

hth,
Samuel

"tshad" <ts**********@f tsolutions.comw rote in message
news:uZ******** *****@TK2MSFTNG P06.phx.gbl...

>I am writing a Service that will start up some threads and I am trying to
find a way to tell if the threads are still running or not?

Is there a good program that will show that threads a service or program
has running?

Part of my code is:
*************** *************** *************** *************** *************** **
Protected Overrides Sub OnStart(ByVal args() As String)
Dim oCredit1 As New CreditProcessor
'LogInfo("Credi tPoller Started")
myLog.WriteEntr y("Demo Service Started @ " & TimeStamp())

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
End Sub

Class CreditProcessor
Inherits CreditService
Public ThreadNumber As String

Public Sub ProcessCredit()
If debugging Then
DebugPoller("Po llAndHandleCred it() Starting Thread Number: " &
ThreadNumber)
End If

If debugging Then
DebugPoller("Po llAndHandleCred it() Exiting Thread Number: " &
ThreadNumber)
End If
End Sub
End Class
*************** *************** *************** *************** *******

The program just starts a thread that prints to a file that the thread is
starting and ending.

In this example, when the ProcesCredit() function exits - does that kill
the thread?

If not, how do I do that?

Thanks,

Tom

Dec 20 '06 #2

Mudhead

Check the IsAlive property of the thread.

If myThread1.IsAli ve = False then
'-- Do Something
End if
"tshad" <ts**********@f tsolutions.comw rote in message
news:uZ******** *****@TK2MSFTNG P06.phx.gbl...

>I am writing a Service that will start up some threads and I am trying to
find a way to tell if the threads are still running or not?

Is there a good program that will show that threads a service or program
has running?

Part of my code is:
*************** *************** *************** *************** *************** **
Protected Overrides Sub OnStart(ByVal args() As String)
Dim oCredit1 As New CreditProcessor
'LogInfo("Credi tPoller Started")
myLog.WriteEntr y("Demo Service Started @ " & TimeStamp())

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
End Sub

Class CreditProcessor
Inherits CreditService
Public ThreadNumber As String

Public Sub ProcessCredit()
If debugging Then
DebugPoller("Po llAndHandleCred it() Starting Thread Number: " &
ThreadNumber)
End If

If debugging Then
DebugPoller("Po llAndHandleCred it() Exiting Thread Number: " &
ThreadNumber)
End If
End Sub
End Class
*************** *************** *************** *************** *******

The program just starts a thread that prints to a file that the thread is
starting and ending.

In this example, when the ProcesCredit() function exits - does that kill
the thread?

If not, how do I do that?

Thanks,

Tom

Dec 21 '06 #3

tshad

"Mudhead" <no*****@yourho use.comwrote in message
news:ea******** ********@TK2MSF TNGP06.phx.gbl. ..

Check the IsAlive property of the thread.

If myThread1.IsAli ve = False then
'-- Do Something
End if

That makes sense.

In this case, if the thread exits normally such that the ThreadState =
Stopped, can I just restart it doing something like:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
myThread1.Start ()

Or

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
oCredit1.Thread Number = "20"
myThread1.Start ()
Or do I need to reset the thread - something like:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "20"
myThread1.Start ()

Thanks,

Tom

>
"tshad" <ts**********@f tsolutions.comw rote in message
news:uZ******** *****@TK2MSFTNG P06.phx.gbl...
>>I am writing a Service that will start up some threads and I am trying to
find a way to tell if the threads are still running or not?

Is there a good program that will show that threads a service or program
has running?

Part of my code is:
************** *************** *************** *************** *************** ***
Protected Overrides Sub OnStart(ByVal args() As String)
Dim oCredit1 As New CreditProcessor
'LogInfo("Credi tPoller Started")
myLog.WriteEntr y("Demo Service Started @ " & TimeStamp())

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
End Sub

Class CreditProcessor
Inherits CreditService
Public ThreadNumber As String

Public Sub ProcessCredit()
If debugging Then
DebugPoller("Po llAndHandleCred it() Starting Thread Number: " &
ThreadNumber )
End If

If debugging Then
DebugPoller("Po llAndHandleCred it() Exiting Thread Number: " &
ThreadNumber )
End If
End Sub
End Class
************** *************** *************** *************** ********

The program just starts a thread that prints to a file that the thread is
starting and ending.

In this example, when the ProcesCredit() function exits - does that kill
the thread?

If not, how do I do that?

Thanks,

Tom

Dec 21 '06 #4

Mudhead

Just reinitialize it:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()

"tshad" <ts**********@f tsolutions.comw rote in message
news:%2******** ********@TK2MSF TNGP03.phx.gbl. ..

"Mudhead" <no*****@yourho use.comwrote in message
news:ea******** ********@TK2MSF TNGP06.phx.gbl. ..
>Check the IsAlive property of the thread.

If myThread1.IsAli ve = False then
'-- Do Something
End if

That makes sense.

In this case, if the thread exits normally such that the ThreadState =
Stopped, can I just restart it doing something like:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
myThread1.Start ()

Or

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
oCredit1.Thread Number = "20"
myThread1.Start ()
Or do I need to reset the thread - something like:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "20"
myThread1.Start ()

Thanks,

Tom
>>
"tshad" <ts**********@f tsolutions.comw rote in message
news:uZ******* ******@TK2MSFTN GP06.phx.gbl...
>>>I am writing a Service that will start up some threads and I am trying to
find a way to tell if the threads are still running or not?

Is there a good program that will show that threads a service or program
has running?

Part of my code is:
************* *************** *************** *************** *************** ****
Protected Overrides Sub OnStart(ByVal args() As String)
Dim oCredit1 As New CreditProcessor
'LogInfo("Credi tPoller Started")
myLog.WriteEntr y("Demo Service Started @ " & TimeStamp())

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
End Sub

Class CreditProcessor
Inherits CreditService
Public ThreadNumber As String

Public Sub ProcessCredit()
If debugging Then
DebugPoller("Po llAndHandleCred it() Starting Thread Number: "
& ThreadNumber)
End If

If debugging Then
DebugPoller("Po llAndHandleCred it() Exiting Thread Number: " &
ThreadNumbe r)
End If
End Sub
End Class
************* *************** *************** *************** *********

The program just starts a thread that prints to a file that the thread
is starting and ending.

In this example, when the ProcesCredit() function exits - does that kill
the thread?

If not, how do I do that?

Thanks,

Tom

Dec 21 '06 #5

tshad

"Mudhead" <no*****@yourho use.comwrote in message
news:ek******** ******@TK2MSFTN GP06.phx.gbl...

Just reinitialize it:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()

That was what I thought. It seemed that when I just just redid the
myThread1.Start () without reinitializing it was freezing. Just wanted to
make sure.

Thanks,

Tom

>
"tshad" <ts**********@f tsolutions.comw rote in message
news:%2******** ********@TK2MSF TNGP03.phx.gbl. ..
>"Mudhead" <no*****@yourho use.comwrote in message
news:ea******* *********@TK2MS FTNGP06.phx.gbl ...
>>Check the IsAlive property of the thread.

If myThread1.IsAli ve = False then
'-- Do Something
End if

That makes sense.

In this case, if the thread exits normally such that the ThreadState =
Stopped, can I just restart it doing something like:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
myThread1.Start ()

Or

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
oCredit1.Thread Number = "20"
myThread1.Start ()
Or do I need to reset the thread - something like:

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "20"
myThread1.Start ()

Thanks,

Tom
>>>
"tshad" <ts**********@f tsolutions.comw rote in message
news:uZ****** *******@TK2MSFT NGP06.phx.gbl.. .
I am writing a Service that will start up some threads and I am trying
to find a way to tell if the threads are still running or not?

Is there a good program that will show that threads a service or
program has running?

Part of my code is:
************ *************** *************** *************** *************** *****
Protected Overrides Sub OnStart(ByVal args() As String)
Dim oCredit1 As New CreditProcessor
'LogInfo("Credi tPoller Started")
myLog.WriteEntr y("Demo Service Started @ " & TimeStamp())

myThread1 = New Thread(AddressO f oCredit1.Proces sCredit)
oCredit1.Thread Number = "1"
myThread1.Start ()
End Sub

Class CreditProcessor
Inherits CreditService
Public ThreadNumber As String

Public Sub ProcessCredit()
If debugging Then
DebugPoller("Po llAndHandleCred it() Starting Thread Number: "
& ThreadNumber)
End If

If debugging Then
DebugPoller("Po llAndHandleCred it() Exiting Thread Number: "
& ThreadNumber)
End If
End Sub
End Class
************ *************** *************** *************** **********

The program just starts a thread that prints to a file that the thread
is starting and ending.

In this example, when the ProcesCredit() function exits - does that
kill the thread?

If not, how do I do that?

Thanks,

Tom

Dec 21 '06 #6

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