"AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
> Hi all,
>
> I have a need for a STA thread from asp.net. I can create the thread and
> it runs fine. But when it is finished, the thread still 'hangs' arround.
> Visible only to the debugger.....
> I get the "The thread  has exited with code 0 (0x12fc)." in the debugger
> each time the thread seemly end, but its still there in the thread window.
> GC.Collect() does not get rid of them either, something must be holding a
> reference to the threads.........
>
>
> a trivial example that demonstrates this
>
> public void Work()
> {
> Thread.Sleep( 5000 ) ;
> System.Diagnostics.Debug.WriteLine("Done!");
> }
>
> private void Button1_Click(object sender, System.EventArgs e)
> {
> ThreadStart ts = new ThreadStart( Work ) ;
> Thread t = new Thread( ts );
> t.Name = "test";
> t.Start();
> t.Join();
> Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
> t = null ;
> GC.Collect();
> }
>
>
> Is there anyway to clean up the Thread?
>
>
>

> Hi all,
>
> I have a need for a STA thread from asp.net. I can create the thread and it
> runs fine. But when it is finished, the thread still 'hangs' arround.
> Visible only to the debugger.....
> I get the "The thread  has exited with code 0 (0x12fc)." in the debugger
> each time the thread seemly end, but its still there in the thread window.
> GC.Collect() does not get rid of them either, something must be holding a
> reference to the threads.........
>
>
> a trivial example that demonstrates this
>
> public void Work()
> {
>  Thread.Sleep( 5000 ) ;
>  System.Diagnostics.Debug.WriteLine("Done!");
> }
>
> private void Button1_Click(object sender, System.EventArgs e)
> {
>  ThreadStart ts = new ThreadStart( Work ) ;
>  Thread t = new Thread( ts );
>  t.Name = "test";
>  t.Start();
>  t.Join();
>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
>  t = null ;
>  GC.Collect();
> }
>
>
> Is there anyway to clean up the Thread?

"AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
> Hi all,
>
> I have a need for a STA thread from asp.net. I can create the thread and
it
> runs fine. But when it is finished, the thread still 'hangs' arround.
> Visible only to the debugger.....
> I get the "The thread  has exited with code 0 (0x12fc)." in the debugger
> each time the thread seemly end, but its still there in the thread window.
> GC.Collect() does not get rid of them either, something must be holding a
> reference to the threads.........
>
>
> a trivial example that demonstrates this
>
> public void Work()
> {
>  Thread.Sleep( 5000 ) ;
>  System.Diagnostics.Debug.WriteLine("Done!");
> }
>
> private void Button1_Click(object sender, System.EventArgs e)
> {
>  ThreadStart ts = new ThreadStart( Work ) ;
>  Thread t = new Thread( ts );
>  t.Name = "test";
>  t.Start();
>  t.Join();
>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
>  t = null ;
>  GC.Collect();
> }
>
>
> Is there anyway to clean up the Thread?
>
>
>

"Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
news:ezmk10mAGHA.1032@TK2MSFTNGP11.phx.gbl...
>I see no reason for STA thread based on the example you provided. Care to
> elaborate? STA threads are for COM based process by the way.
>
> sorry, scratch that. I realized you were simply using incorrect
> terminology.
>
> --
> Regards,
> Alvin Bruney [MVP ASP.NET]
>
> [Shameless Author plug]
> The Microsoft Office Web Components Black Book with .NET
> Now Available @ www.lulu.com/owc
> Forth-coming VSTO.NET - Wrox/Wiley 2006
> -------------------------------------------------------
>
>
>
> "AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
> news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
>> Hi all,
>>
>> I have a need for a STA thread from asp.net. I can create the thread and
> it
>> runs fine. But when it is finished, the thread still 'hangs' arround.
>> Visible only to the debugger.....
>> I get the "The thread  has exited with code 0 (0x12fc)." in the debugger
>> each time the thread seemly end, but its still there in the thread
>> window.
>> GC.Collect() does not get rid of them either, something must be holding a
>> reference to the threads.........
>>
>>
>> a trivial example that demonstrates this
>>
>> public void Work()
>> {
>>  Thread.Sleep( 5000 ) ;
>>  System.Diagnostics.Debug.WriteLine("Done!");
>> }
>>
>> private void Button1_Click(object sender, System.EventArgs e)
>> {
>>  ThreadStart ts = new ThreadStart( Work ) ;
>>  Thread t = new Thread( ts );
>>  t.Name = "test";
>>  t.Start();
>>  t.Join();
>>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
>>  t = null ;
>>  GC.Collect();
>> }
>>
>>
>> Is there anyway to clean up the Thread?
>>
>>
>>
>
>

| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| I DO need an STA thread, I'm creating an invisible window that hosts
mshtml
| and axwebrowser. I'm dynamically creating a bitmap using html. I need
some
| consistancy across platforms, I have this code working fine. But I have
to
| create a thread(STA) to host it.
|
| In my testing i've noticed that the thread hangs arround in the debugger.
| Even stripping my component out and creating the do almost nothing thread
| example that i posted leaves this 'orphaned' thread. Regardless of the
| apartment state.
|
| I can't use the threadpool as the those threads are always MTA.
|
|
| "Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
| news:ezmk10mAGHA.1032@TK2MSFTNGP11.phx.gbl...
| >I see no reason for STA thread based on the example you provided. Care to
| > elaborate? STA threads are for COM based process by the way.
| >
| > sorry, scratch that. I realized you were simply using incorrect
| > terminology.
| >
| > --
| > Regards,
| > Alvin Bruney [MVP ASP.NET]
| >
| > [Shameless Author plug]
| > The Microsoft Office Web Components Black Book with .NET
| > Now Available @ www.lulu.com/owc
| > Forth-coming VSTO.NET - Wrox/Wiley 2006
| > -------------------------------------------------------
| >
| >
| >
| > "AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
| > news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
| >> Hi all,
| >>
| >> I have a need for a STA thread from asp.net. I can create the thread
and
| > it
| >> runs fine. But when it is finished, the thread still 'hangs' arround.
| >> Visible only to the debugger.....
| >> I get the "The thread  has exited with code 0 (0x12fc)." in the
debugger
| >> each time the thread seemly end, but its still there in the thread
| >> window.
| >> GC.Collect() does not get rid of them either, something must be
holding a
| >> reference to the threads.........
| >>
| >>
| >> a trivial example that demonstrates this
| >>
| >> public void Work()
| >> {
| >>  Thread.Sleep( 5000 ) ;
| >>  System.Diagnostics.Debug.WriteLine("Done!");
| >> }
| >>
| >> private void Button1_Click(object sender, System.EventArgs e)
| >> {
| >>  ThreadStart ts = new ThreadStart( Work ) ;
| >>  Thread t = new Thread( ts );
| >>  t.Name = "test";
| >>  t.Start();
| >>  t.Join();
| >>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
| >>  t = null ;
| >>  GC.Collect();
| >> }
| >>
| >>
| >> Is there anyway to clean up the Thread?
| >>
| >>
| >>
| >
| >
|
|
|

"Steven Cheng[MSFT]" <stch***@online.microsoft.com> wrote in message
news:jklALRUBGHA.3764@TK2MSFTNGXA02.phx.gbl...
> Hi Adrian,
>
> If the hang or unreleased thread you watched is the underlying operating
> system thread, then that should be reasonable since regardless of the
> thread operation (start, end,.....), the CLR's unmanaged code has
> structure
> to hold reference to operating system thread. And so there is no definite
> mapping between the underlying operating system thread to the managed CLR
> thread instance..... Sometimes, our CLR t hread's work has finished, the
> underlying CLR structure may still hold the OS thread. Or other times
> event
> the OS thread has destroyed, the CLR's thread reference still refer to a
> managed thread object (for keepting some thread information....)...
>
> Thanks,
>
> Steven Cheng
> Microsoft Online Support
>
> Get Secure! www.microsoft.com/security
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>
>
>
> --------------------
> | From: "AdrianJMartin" <AdrianJMartin@newsgroups.nospam>
> | References: <OIxsHwjAGHA.***@tk2msftngp13.phx.gbl>
> <ezmk10mAGHA.1***@TK2MSFTNGP11.phx.gbl>
> | Subject: Re: Threading
> | Date: Mon, 19 Dec 2005 09:43:27 -0000
> | Lines: 77
> | X-Priority: 3
> | X-MSMail-Priority: Normal
> | X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
> | X-RFC2646: Format=Flowed; Original
> | Message-ID: <OQp0rCIBGHA.***@TK2MSFTNGP12.phx.gbl>
> | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | NNTP-Posting-Host: ip-217-204-53-234.easynet.co.uk 217.204.53.234
> | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
> | Xref: TK2MSFTNGXA02.phx.gbl
> microsoft.public.dotnet.framework.aspnet:365658
> | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> |
> | I DO need an STA thread, I'm creating an invisible window that hosts
> mshtml
> | and axwebrowser. I'm dynamically creating a bitmap using html. I need
> some
> | consistancy across platforms, I have this code working fine. But I have
> to
> | create a thread(STA) to host it.
> |
> | In my testing i've noticed that the thread hangs arround in the
> debugger.
> | Even stripping my component out and creating the do almost nothing
> thread
> | example that i posted leaves this 'orphaned' thread. Regardless of the
> | apartment state.
> |
> | I can't use the threadpool as the those threads are always MTA.
> |
> |
> | "Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
> | news:ezmk10mAGHA.1032@TK2MSFTNGP11.phx.gbl...
> | >I see no reason for STA thread based on the example you provided. Care
> to
> | > elaborate? STA threads are for COM based process by the way.
> | >
> | > sorry, scratch that. I realized you were simply using incorrect
> | > terminology.
> | >
> | > --
> | > Regards,
> | > Alvin Bruney [MVP ASP.NET]
> | >
> | > [Shameless Author plug]
> | > The Microsoft Office Web Components Black Book with .NET
> | > Now Available @ www.lulu.com/owc
> | > Forth-coming VSTO.NET - Wrox/Wiley 2006
> | > -------------------------------------------------------
> | >
> | >
> | >
> | > "AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
> | > news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
> | >> Hi all,
> | >>
> | >> I have a need for a STA thread from asp.net. I can create the thread
> and
> | > it
> | >> runs fine. But when it is finished, the thread still 'hangs' arround.
> | >> Visible only to the debugger.....
> | >> I get the "The thread  has exited with code 0 (0x12fc)." in the
> debugger
> | >> each time the thread seemly end, but its still there in the thread
> | >> window.
> | >> GC.Collect() does not get rid of them either, something must be
> holding a
> | >> reference to the threads.........
> | >>
> | >>
> | >> a trivial example that demonstrates this
> | >>
> | >> public void Work()
> | >> {
> | >>  Thread.Sleep( 5000 ) ;
> | >>  System.Diagnostics.Debug.WriteLine("Done!");
> | >> }
> | >>
> | >> private void Button1_Click(object sender, System.EventArgs e)
> | >> {
> | >>  ThreadStart ts = new ThreadStart( Work ) ;
> | >>  Thread t = new Thread( ts );
> | >>  t.Name = "test";
> | >>  t.Start();
> | >>  t.Join();
> | >>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
> | >>  t = null ;
> | >>  GC.Collect();
> | >> }
> | >>
> | >>
> | >> Is there anyway to clean up the Thread?
> | >>
> | >>
> | >>
> | >
> | >
> |
> |
> |
>

| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Hi Steven,
|
| Why would it be an OS thread I see? VS debugging is set to Managed only,
and
| I've name the thread. if you run the code below, press the button a few
| times, snap on a debugger break point inside Button1_Click(...) and see
that
| thread window is full of orphaned threads.( you may have Comment out the
| t.Join )
|
|
|  Adrian
|
|
|
|
|
|
| "Steven Cheng[MSFT]" <stch***@online.microsoft.com> wrote in message
| news:jklALRUBGHA.3764@TK2MSFTNGXA02.phx.gbl...
| > Hi Adrian,
| >
| > If the hang or unreleased thread you watched is the underlying operating
| > system thread, then that should be reasonable since regardless of the
| > thread operation (start, end,.....), the CLR's unmanaged code has
| > structure
| > to hold reference to operating system thread. And so there is no
definite
| > mapping between the underlying operating system thread to the managed
CLR
| > thread instance..... Sometimes, our CLR t hread's work has finished, the
| > underlying CLR structure may still hold the OS thread. Or other times
| > event
| > the OS thread has destroyed, the CLR's thread reference still refer to a
| > managed thread object (for keepting some thread information....)...
| >
| > Thanks,
| >
| > Steven Cheng
| > Microsoft Online Support
| >
| > Get Secure! www.microsoft.com/security
| > (This posting is provided "AS IS", with no warranties, and confers no
| > rights.)
| >
| >
| >
| > --------------------
| > | From: "AdrianJMartin" <AdrianJMartin@newsgroups.nospam>
| > | References: <OIxsHwjAGHA.***@tk2msftngp13.phx.gbl>
| > <ezmk10mAGHA.1***@TK2MSFTNGP11.phx.gbl>
| > | Subject: Re: Threading
| > | Date: Mon, 19 Dec 2005 09:43:27 -0000
| > | Lines: 77
| > | X-Priority: 3
| > | X-MSMail-Priority: Normal
| > | X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
| > | X-RFC2646: Format=Flowed; Original
| > | Message-ID: <OQp0rCIBGHA.***@TK2MSFTNGP12.phx.gbl>
| > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | NNTP-Posting-Host: ip-217-204-53-234.easynet.co.uk 217.204.53.234
| > | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
| > | Xref: TK2MSFTNGXA02.phx.gbl
| > microsoft.public.dotnet.framework.aspnet:365658
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > |
| > | I DO need an STA thread, I'm creating an invisible window that hosts
| > mshtml
| > | and axwebrowser. I'm dynamically creating a bitmap using html. I need
| > some
| > | consistancy across platforms, I have this code working fine. But I
have
| > to
| > | create a thread(STA) to host it.
| > |
| > | In my testing i've noticed that the thread hangs arround in the
| > debugger.
| > | Even stripping my component out and creating the do almost nothing
| > thread
| > | example that i posted leaves this 'orphaned' thread. Regardless of the
| > | apartment state.
| > |
| > | I can't use the threadpool as the those threads are always MTA.
| > |
| > |
| > | "Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
| > | news:ezmk10mAGHA.1032@TK2MSFTNGP11.phx.gbl...
| > | >I see no reason for STA thread based on the example you provided.
Care
| > to
| > | > elaborate? STA threads are for COM based process by the way.
| > | >
| > | > sorry, scratch that. I realized you were simply using incorrect
| > | > terminology.
| > | >
| > | > --
| > | > Regards,
| > | > Alvin Bruney [MVP ASP.NET]
| > | >
| > | > [Shameless Author plug]
| > | > The Microsoft Office Web Components Black Book with .NET
| > | > Now Available @ www.lulu.com/owc
| > | > Forth-coming VSTO.NET - Wrox/Wiley 2006
| > | > -------------------------------------------------------
| > | >
| > | >
| > | >
| > | > "AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
| > | > news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
| > | >> Hi all,
| > | >>
| > | >> I have a need for a STA thread from asp.net. I can create the
thread
| > and
| > | > it
| > | >> runs fine. But when it is finished, the thread still 'hangs'
arround.
| > | >> Visible only to the debugger.....
| > | >> I get the "The thread  has exited with code 0 (0x12fc)." in the
| > debugger
| > | >> each time the thread seemly end, but its still there in the thread
| > | >> window.
| > | >> GC.Collect() does not get rid of them either, something must be
| > holding a
| > | >> reference to the threads.........
| > | >>
| > | >>
| > | >> a trivial example that demonstrates this
| > | >>
| > | >> public void Work()
| > | >> {
| > | >>  Thread.Sleep( 5000 ) ;
| > | >>  System.Diagnostics.Debug.WriteLine("Done!");
| > | >> }
| > | >>
| > | >> private void Button1_Click(object sender, System.EventArgs e)
| > | >> {
| > | >>  ThreadStart ts = new ThreadStart( Work ) ;
| > | >>  Thread t = new Thread( ts );
| > | >>  t.Name = "test";
| > | >>  t.Start();
| > | >>  t.Join();
| > | >>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
| > | >>  t = null ;
| > | >>  GC.Collect();
| > | >> }
| > | >>
| > | >>
| > | >> Is there anyway to clean up the Thread?
| > | >>
| > | >>
| > | >>
| > | >
| > | >
| > |
| > |
| > |
| >
|
|
|

"Steven Cheng[MSFT]" <stch***@online.microsoft.com> wrote in message
news:ddxRsufBGHA.3096@TK2MSFTNGXA02.phx.gbl...
> Hi Adrian,
>
> Thanks for your quick response.
> For the Process.GetCurrentProcess().Threads, it's a collection that
> represents all the OS threads in the current running process(retrieve from
> server's performance counter), we can see that the Thread's class is
> "ProcessThread" rather than the System.Threading.Thread.....
>
> Also, based on my local test, when creating a new thread that in STA
> apartment model, it'll end successfully (the OS thread will also be
> destoryed....). And for the .net's managed Thread class, it's threadState
> will be set to "Stoped" when it has finished the work, we no longer need
> to
> worry about the sequential work since the CLR will take care of it.....
>
> Here is a test page I used to print the process threads and the managed
> threads (I manually created)'s status......
>
> I contains three buttons , one used to printout OS threads, one used to
> create new STA threads, and the third print out my managed threads:
>
> =============================
> public class ThreadTest : System.Web.UI.Page
> {
> protected System.Web.UI.WebControls.Button btnPrintThreads;
> protected System.Web.UI.WebControls.Button btnStartThreads;
> protected System.Web.UI.WebControls.Button btnPrintManagedThreads;
>
> private void Page_Load(object sender, System.EventArgs e)
> {
> // Put user code to initialize the page here
> }
>
> #region Web Form Designer generated code
> override protected void OnInit(EventArgs e)
> {
> //
> // CODEGEN: This call is required by the ASP.NET Web Form Designer.
> //
> InitializeComponent();
> base.OnInit(e);
> }
>
> /// <summary>
> /// Required method for Designer support - do not modify
> /// the contents of this method with the code editor.
> /// </summary>
> private void InitializeComponent()
> {
> this.btnPrintThreads.Click += new
> System.EventHandler(this.btnPrintThreads_Click);
> this.btnStartThreads.Click += new
> System.EventHandler(this.btnStartThreads_Click);
> this.btnPrintManagedThreads.Click += new
> System.EventHandler(this.btnPrintManagedThreads_Click);
> this.Load += new System.EventHandler(this.Page_Load);
>
> }
> #endregion
>
> private void btnStartThreads_Click(object sender, System.EventArgs e)
> {
> Thread td = new Thread(new ThreadStart(Work));
>
>
>
> if(Application["threads"] == null)
> {
> Application["threads"] = new ArrayList();
> }
>
> ArrayList list =  Application["threads"] as ArrayList;
>
> list.Add(td);
>
> td.ApartmentState = ApartmentState.STA;
> td.Start();
>
> }
>
> private void btnPrintThreads_Click(object sender, System.EventArgs e)
> {
> Response.Write("<br>==================");
> Response.Write("<br>OS threads: " +
> Process.GetCurrentProcess().Threads.Count);
>
> foreach(ProcessThread pt in Process.GetCurrentProcess().Threads)
> {
> Response.Write("<br>Id: " + pt.Id + " Status: " + pt.ThreadState);
> }
> }
>
> private void btnPrintManagedThreads_Click(object sender, System.EventArgs
> e)
> {
> if(Application["threads"] == null)
> {
> Application["threads"] = new ArrayList();
> }
>
> ArrayList list =  Application["threads"] as ArrayList;
>
> Response.Write("<br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%");
> Response.Write("<br>Worker Threads: " + list.Count);
>
> foreach(object obj in list)
> {
> Thread td = obj as Thread;
> if(td != null)
> {
> Response.Write("<br>Id: " + td.Name + " status: " + td.ThreadState);
> }
> }
>
>
> }
>
>
> public static void Work()
> {
> Thread.Sleep( 10000 ) ;
> System.Diagnostics.Debug.WriteLine("Done!");
> }
> }
> ============================
>
> Thanks,
>
> Steven Cheng
> Microsoft Online Support
>
> Get Secure! www.microsoft.com/security
> (This posting is provided "AS IS", with no warranties, and confers no
> rights.)
>
> --------------------
> | From: "AdrianJMartin" <AdrianJMartin@newsgroups.nospam>
> | References: <OIxsHwjAGHA.***@tk2msftngp13.phx.gbl>
> <ezmk10mAGHA.1***@TK2MSFTNGP11.phx.gbl>
> <OQp0rCIBGHA.***@TK2MSFTNGP12.phx.gbl>
> <jklALRUBGHA.3***@TK2MSFTNGXA02.phx.gbl>
> | Subject: Re: Threading
> | Date: Tue, 20 Dec 2005 09:49:04 -0000
> | Lines: 153
> | X-Priority: 3
> | X-MSMail-Priority: Normal
> | X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
> | X-RFC2646: Format=Flowed; Original
> | Message-ID: <eGekeqUBGHA.3***@TK2MSFTNGP14.phx.gbl>
> | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | NNTP-Posting-Host: ip-217-204-53-234.easynet.co.uk 217.204.53.234
> | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP14.phx.gbl
> | Xref: TK2MSFTNGXA02.phx.gbl
> microsoft.public.dotnet.framework.aspnet:365906
> | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> |
> | Hi Steven,
> |
> | Why would it be an OS thread I see? VS debugging is set to Managed only,
> and
> | I've name the thread. if you run the code below, press the button a few
> | times, snap on a debugger break point inside Button1_Click(...) and see
> that
> | thread window is full of orphaned threads.( you may have Comment out the
> | t.Join )
> |
> |
> |  Adrian
> |
> |
> |
> |
> |
> |
> | "Steven Cheng[MSFT]" <stch***@online.microsoft.com> wrote in message
> | news:jklALRUBGHA.3764@TK2MSFTNGXA02.phx.gbl...
> | > Hi Adrian,
> | >
> | > If the hang or unreleased thread you watched is the underlying
> operating
> | > system thread, then that should be reasonable since regardless of the
> | > thread operation (start, end,.....), the CLR's unmanaged code has
> | > structure
> | > to hold reference to operating system thread. And so there is no
> definite
> | > mapping between the underlying operating system thread to the managed
> CLR
> | > thread instance..... Sometimes, our CLR t hread's work has finished,
> the
> | > underlying CLR structure may still hold the OS thread. Or other times
> | > event
> | > the OS thread has destroyed, the CLR's thread reference still refer to
> a
> | > managed thread object (for keepting some thread information....)...
> | >
> | > Thanks,
> | >
> | > Steven Cheng
> | > Microsoft Online Support
> | >
> | > Get Secure! www.microsoft.com/security
> | > (This posting is provided "AS IS", with no warranties, and confers no
> | > rights.)
> | >
> | >
> | >
> | > --------------------
> | > | From: "AdrianJMartin" <AdrianJMartin@newsgroups.nospam>
> | > | References: <OIxsHwjAGHA.***@tk2msftngp13.phx.gbl>
> | > <ezmk10mAGHA.1***@TK2MSFTNGP11.phx.gbl>
> | > | Subject: Re: Threading
> | > | Date: Mon, 19 Dec 2005 09:43:27 -0000
> | > | Lines: 77
> | > | X-Priority: 3
> | > | X-MSMail-Priority: Normal
> | > | X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
> | > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
> | > | X-RFC2646: Format=Flowed; Original
> | > | Message-ID: <OQp0rCIBGHA.***@TK2MSFTNGP12.phx.gbl>
> | > | Newsgroups: microsoft.public.dotnet.framework.aspnet
> | > | NNTP-Posting-Host: ip-217-204-53-234.easynet.co.uk 217.204.53.234
> | > | Path:
> TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
> | > | Xref: TK2MSFTNGXA02.phx.gbl
> | > microsoft.public.dotnet.framework.aspnet:365658
> | > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
> | > |
> | > | I DO need an STA thread, I'm creating an invisible window that hosts
> | > mshtml
> | > | and axwebrowser. I'm dynamically creating a bitmap using html. I
> need
> | > some
> | > | consistancy across platforms, I have this code working fine. But I
> have
> | > to
> | > | create a thread(STA) to host it.
> | > |
> | > | In my testing i've noticed that the thread hangs arround in the
> | > debugger.
> | > | Even stripping my component out and creating the do almost nothing
> | > thread
> | > | example that i posted leaves this 'orphaned' thread. Regardless of
> the
> | > | apartment state.
> | > |
> | > | I can't use the threadpool as the those threads are always MTA.
> | > |
> | > |
> | > | "Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
> | > | news:ezmk10mAGHA.1032@TK2MSFTNGP11.phx.gbl...
> | > | >I see no reason for STA thread based on the example you provided.
> Care
> | > to
> | > | > elaborate? STA threads are for COM based process by the way.
> | > | >
> | > | > sorry, scratch that. I realized you were simply using incorrect
> | > | > terminology.
> | > | >
> | > | > --
> | > | > Regards,
> | > | > Alvin Bruney [MVP ASP.NET]
> | > | >
> | > | > [Shameless Author plug]
> | > | > The Microsoft Office Web Components Black Book with .NET
> | > | > Now Available @ www.lulu.com/owc
> | > | > Forth-coming VSTO.NET - Wrox/Wiley 2006
> | > | > -------------------------------------------------------
> | > | >
> | > | >
> | > | >
> | > | > "AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in message
> | > | > news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
> | > | >> Hi all,
> | > | >>
> | > | >> I have a need for a STA thread from asp.net. I can create the
> thread
> | > and
> | > | > it
> | > | >> runs fine. But when it is finished, the thread still 'hangs'
> arround.
> | > | >> Visible only to the debugger.....
> | > | >> I get the "The thread  has exited with code 0 (0x12fc)." in the
> | > debugger
> | > | >> each time the thread seemly end, but its still there in the
> thread
> | > | >> window.
> | > | >> GC.Collect() does not get rid of them either, something must be
> | > holding a
> | > | >> reference to the threads.........
> | > | >>
> | > | >>
> | > | >> a trivial example that demonstrates this
> | > | >>
> | > | >> public void Work()
> | > | >> {
> | > | >>  Thread.Sleep( 5000 ) ;
> | > | >>  System.Diagnostics.Debug.WriteLine("Done!");
> | > | >> }
> | > | >>
> | > | >> private void Button1_Click(object sender, System.EventArgs e)
> | > | >> {
> | > | >>  ThreadStart ts = new ThreadStart( Work ) ;
> | > | >>  Thread t = new Thread( ts );
> | > | >>  t.Name = "test";
> | > | >>  t.Start();
> | > | >>  t.Join();
> | > | >>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
> | > | >>  t = null ;
> | > | >>  GC.Collect();
> | > | >> }
> | > | >>
> | > | >>
> | > | >> Is there anyway to clean up the Thread?
> | > | >>
> | > | >>
> | > | >>
> | > | >
> | > | >
> | > |
> | > |
> | > |
> | >
> |
> |
> |
>

| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
|
| Thank you Steven you have been very helpfull!
|
| I modded your code to generate lots of threads per click, initialy they
seem
| to hang arround in the debugger. but i added some more code to remove
| stopped threads from the arraylist( i assume they were still reachable
| because of the reference in the arraylist). And now they are gone! GOOD.
|
| I went back to my simpler code and noticed that if i detach and reattach
the
| debugger to aspnet_wp.exe then the thread window get updated correctly,
so
| i've been lead a bit of a dance by the vs2003 debugger!
|
|
|
| Ta
| Adrian
|
|
|
|
|
|
| "Steven Cheng[MSFT]" <stch***@online.microsoft.com> wrote in message
| news:ddxRsufBGHA.3096@TK2MSFTNGXA02.phx.gbl...
| > Hi Adrian,
| >
| > Thanks for your quick response.
| > For the Process.GetCurrentProcess().Threads, it's a collection that
| > represents all the OS threads in the current running process(retrieve
from
| > server's performance counter), we can see that the Thread's class is
| > "ProcessThread" rather than the System.Threading.Thread.....
| >
| > Also, based on my local test, when creating a new thread that in STA
| > apartment model, it'll end successfully (the OS thread will also be
| > destoryed....). And for the .net's managed Thread class, it's
threadState
| > will be set to "Stoped" when it has finished the work, we no longer
need
| > to
| > worry about the sequential work since the CLR will take care of it.....
| >
| > Here is a test page I used to print the process threads and the managed
| > threads (I manually created)'s status......
| >
| > I contains three buttons , one used to printout OS threads, one used to
| > create new STA threads, and the third print out my managed threads:
| >
| > =============================
| > public class ThreadTest : System.Web.UI.Page
| > {
| > protected System.Web.UI.WebControls.Button btnPrintThreads;
| > protected System.Web.UI.WebControls.Button btnStartThreads;
| > protected System.Web.UI.WebControls.Button btnPrintManagedThreads;
| >
| > private void Page_Load(object sender, System.EventArgs e)
| > {
| > // Put user code to initialize the page here
| > }
| >
| > #region Web Form Designer generated code
| > override protected void OnInit(EventArgs e)
| > {
| > //
| > // CODEGEN: This call is required by the ASP.NET Web Form Designer.
| > //
| > InitializeComponent();
| > base.OnInit(e);
| > }
| >
| > /// <summary>
| > /// Required method for Designer support - do not modify
| > /// the contents of this method with the code editor.
| > /// </summary>
| > private void InitializeComponent()
| > {
| > this.btnPrintThreads.Click += new
| > System.EventHandler(this.btnPrintThreads_Click);
| > this.btnStartThreads.Click += new
| > System.EventHandler(this.btnStartThreads_Click);
| > this.btnPrintManagedThreads.Click += new
| > System.EventHandler(this.btnPrintManagedThreads_Click);
| > this.Load += new System.EventHandler(this.Page_Load);
| >
| > }
| > #endregion
| >
| > private void btnStartThreads_Click(object sender, System.EventArgs e)
| > {
| > Thread td = new Thread(new ThreadStart(Work));
| >
| >
| >
| > if(Application["threads"] == null)
| > {
| > Application["threads"] = new ArrayList();
| > }
| >
| > ArrayList list =  Application["threads"] as ArrayList;
| >
| > list.Add(td);
| >
| > td.ApartmentState = ApartmentState.STA;
| > td.Start();
| >
| > }
| >
| > private void btnPrintThreads_Click(object sender, System.EventArgs e)
| > {
| > Response.Write("<br>==================");
| > Response.Write("<br>OS threads: " +
| > Process.GetCurrentProcess().Threads.Count);
| >
| > foreach(ProcessThread pt in Process.GetCurrentProcess().Threads)
| > {
| > Response.Write("<br>Id: " + pt.Id + " Status: " + pt.ThreadState);
| > }
| > }
| >
| > private void btnPrintManagedThreads_Click(object sender,
System.EventArgs
| > e)
| > {
| > if(Application["threads"] == null)
| > {
| > Application["threads"] = new ArrayList();
| > }
| >
| > ArrayList list =  Application["threads"] as ArrayList;
| >
| > Response.Write("<br>%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%");
| > Response.Write("<br>Worker Threads: " + list.Count);
| >
| > foreach(object obj in list)
| > {
| > Thread td = obj as Thread;
| > if(td != null)
| > {
| > Response.Write("<br>Id: " + td.Name + " status: " + td.ThreadState);
| > }
| > }
| >
| >
| > }
| >
| >
| > public static void Work()
| > {
| > Thread.Sleep( 10000 ) ;
| > System.Diagnostics.Debug.WriteLine("Done!");
| > }
| > }
| > ============================
| >
| > Thanks,
| >
| > Steven Cheng
| > Microsoft Online Support
| >
| > Get Secure! www.microsoft.com/security
| > (This posting is provided "AS IS", with no warranties, and confers no
| > rights.)
| >
| > --------------------
| > | From: "AdrianJMartin" <AdrianJMartin@newsgroups.nospam>
| > | References: <OIxsHwjAGHA.***@tk2msftngp13.phx.gbl>
| > <ezmk10mAGHA.1***@TK2MSFTNGP11.phx.gbl>
| > <OQp0rCIBGHA.***@TK2MSFTNGP12.phx.gbl>
| > <jklALRUBGHA.3***@TK2MSFTNGXA02.phx.gbl>
| > | Subject: Re: Threading
| > | Date: Tue, 20 Dec 2005 09:49:04 -0000
| > | Lines: 153
| > | X-Priority: 3
| > | X-MSMail-Priority: Normal
| > | X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
| > | X-RFC2646: Format=Flowed; Original
| > | Message-ID: <eGekeqUBGHA.3***@TK2MSFTNGP14.phx.gbl>
| > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | NNTP-Posting-Host: ip-217-204-53-234.easynet.co.uk 217.204.53.234
| > | Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP14.phx.gbl
| > | Xref: TK2MSFTNGXA02.phx.gbl
| > microsoft.public.dotnet.framework.aspnet:365906
| > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > |
| > | Hi Steven,
| > |
| > | Why would it be an OS thread I see? VS debugging is set to Managed
only,
| > and
| > | I've name the thread. if you run the code below, press the button a
few
| > | times, snap on a debugger break point inside Button1_Click(...) and
see
| > that
| > | thread window is full of orphaned threads.( you may have Comment out
the
| > | t.Join )
| > |
| > |
| > |  Adrian
| > |
| > |
| > |
| > |
| > |
| > |
| > | "Steven Cheng[MSFT]" <stch***@online.microsoft.com> wrote in message
| > | news:jklALRUBGHA.3764@TK2MSFTNGXA02.phx.gbl...
| > | > Hi Adrian,
| > | >
| > | > If the hang or unreleased thread you watched is the underlying
| > operating
| > | > system thread, then that should be reasonable since regardless of
the
| > | > thread operation (start, end,.....), the CLR's unmanaged code has
| > | > structure
| > | > to hold reference to operating system thread. And so there is no
| > definite
| > | > mapping between the underlying operating system thread to the
managed
| > CLR
| > | > thread instance..... Sometimes, our CLR t hread's work has
finished,
| > the
| > | > underlying CLR structure may still hold the OS thread. Or other
times
| > | > event
| > | > the OS thread has destroyed, the CLR's thread reference still refer
to
| > a
| > | > managed thread object (for keepting some thread information....)...
| > | >
| > | > Thanks,
| > | >
| > | > Steven Cheng
| > | > Microsoft Online Support
| > | >
| > | > Get Secure! www.microsoft.com/security
| > | > (This posting is provided "AS IS", with no warranties, and confers
no
| > | > rights.)
| > | >
| > | >
| > | >
| > | > --------------------
| > | > | From: "AdrianJMartin" <AdrianJMartin@newsgroups.nospam>
| > | > | References: <OIxsHwjAGHA.***@tk2msftngp13.phx.gbl>
| > | > <ezmk10mAGHA.1***@TK2MSFTNGP11.phx.gbl>
| > | > | Subject: Re: Threading
| > | > | Date: Mon, 19 Dec 2005 09:43:27 -0000
| > | > | Lines: 77
| > | > | X-Priority: 3
| > | > | X-MSMail-Priority: Normal
| > | > | X-Newsreader: Microsoft Outlook Express 6.00.2900.2180
| > | > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2180
| > | > | X-RFC2646: Format=Flowed; Original
| > | > | Message-ID: <OQp0rCIBGHA.***@TK2MSFTNGP12.phx.gbl>
| > | > | Newsgroups: microsoft.public.dotnet.framework.aspnet
| > | > | NNTP-Posting-Host: ip-217-204-53-234.easynet.co.uk 217.204.53.234
| > | > | Path:
| > TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
| > | > | Xref: TK2MSFTNGXA02.phx.gbl
| > | > microsoft.public.dotnet.framework.aspnet:365658
| > | > | X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet
| > | > |
| > | > | I DO need an STA thread, I'm creating an invisible window that
hosts
| > | > mshtml
| > | > | and axwebrowser. I'm dynamically creating a bitmap using html. I
| > need
| > | > some
| > | > | consistancy across platforms, I have this code working fine. But I
| > have
| > | > to
| > | > | create a thread(STA) to host it.
| > | > |
| > | > | In my testing i've noticed that the thread hangs arround in the
| > | > debugger.
| > | > | Even stripping my component out and creating the do almost nothing
| > | > thread
| > | > | example that i posted leaves this 'orphaned' thread. Regardless
of
| > the
| > | > | apartment state.
| > | > |
| > | > | I can't use the threadpool as the those threads are always MTA.
| > | > |
| > | > |
| > | > | "Alvin Bruney - ASP.NET MVP" <www.lulu.com/owc> wrote in message
| > | > | news:ezmk10mAGHA.1032@TK2MSFTNGP11.phx.gbl...
| > | > | >I see no reason for STA thread based on the example you provided.
| > Care
| > | > to
| > | > | > elaborate? STA threads are for COM based process by the way.
| > | > | >
| > | > | > sorry, scratch that. I realized you were simply using incorrect
| > | > | > terminology.
| > | > | >
| > | > | > --
| > | > | > Regards,
| > | > | > Alvin Bruney [MVP ASP.NET]
| > | > | >
| > | > | > [Shameless Author plug]
| > | > | > The Microsoft Office Web Components Black Book with .NET
| > | > | > Now Available @ www.lulu.com/owc
| > | > | > Forth-coming VSTO.NET - Wrox/Wiley 2006
| > | > | > -------------------------------------------------------
| > | > | >
| > | > | >
| > | > | >
| > | > | > "AdrianJMartin" <AdrianJMartin@newsgroups.nospam> wrote in
message
| > | > | > news:OIxsHwjAGHA.984@tk2msftngp13.phx.gbl...
| > | > | >> Hi all,
| > | > | >>
| > | > | >> I have a need for a STA thread from asp.net. I can create the
| > thread
| > | > and
| > | > | > it
| > | > | >> runs fine. But when it is finished, the thread still 'hangs'
| > arround.
| > | > | >> Visible only to the debugger.....
| > | > | >> I get the "The thread  has exited with code 0 (0x12fc)." in the
| > | > debugger
| > | > | >> each time the thread seemly end, but its still there in the
| > thread
| > | > | >> window.
| > | > | >> GC.Collect() does not get rid of them either, something must be
| > | > holding a
| > | > | >> reference to the threads.........
| > | > | >>
| > | > | >>
| > | > | >> a trivial example that demonstrates this
| > | > | >>
| > | > | >> public void Work()
| > | > | >> {
| > | > | >>  Thread.Sleep( 5000 ) ;
| > | > | >>  System.Diagnostics.Debug.WriteLine("Done!");
| > | > | >> }
| > | > | >>
| > | > | >> private void Button1_Click(object sender, System.EventArgs e)
| > | > | >> {
| > | > | >>  ThreadStart ts = new ThreadStart( Work ) ;
| > | > | >>  Thread t = new Thread( ts );
| > | > | >>  t.Name = "test";
| > | > | >>  t.Start();
| > | > | >>  t.Join();
| > | > | >>  Debug.WriteLine( Process.GetCurrentProcess().Threads.Count );
| > | > | >>  t = null ;
| > | > | >>  GC.Collect();
| > | > | >> }
| > | > | >>
| > | > | >>
| > | > | >> Is there anyway to clean up the Thread?
| > | > | >>
| > | > | >>
| > | > | >>
| > | > | >
| > | > | >
| > | > |
| > | > |
| > | > |
| > | >
| > |
| > |
| > |
| >
|
|
|