Thanks for your followup Adrian,
Yes, that's also why I'd prefered test through the page out of debugger (or
in debuggin mode...)
...
Have a good day!
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" <
[email protected]>
| References: <
[email protected]>
<
[email protected]>
<
[email protected]>
<
[email protected]>
<
[email protected]>
<
[email protected]>
| Subject: Re: Threading
| Date: Wed, 21 Dec 2005 09:59:55 -0000
| Lines: 352
| 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
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| Message-ID: <
[email protected]>
| Newsgroups: microsoft.public.dotnet.framework.aspnet
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| Path: TK2MSFTNGXA02.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP14.phx.gbl
| Xref: TK2MSFTNGXA02.phx.gbl
microsoft.public.dotnet.framework.aspnet:366188
| 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
|
|
|
|
|
|
| | > 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" <
[email protected]>
| > | References: <
[email protected]>
| > <
[email protected]>
| > <
[email protected]>
| > <
[email protected]>
| > | 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: <
[email protected]>
| > | 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
| > |
| > |
| > |
| > |
| > |
| > |
| > | | > | > 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" <
[email protected]>
| > | > | References: <
[email protected]>
| > | > <
[email protected]>
| > | > | 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: <
[email protected]>
| > | > | 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
| > | > | | > | > | >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
| > | > | > -------------------------------------------------------
| > | > | >
| > | > | >
| > | > | >
message
| > | > | > | > | > | >> 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?
| > | > | >>
| > | > | >>
| > | > | >>
| > | > | >
| > | > | >
| > | > |
| > | > |
| > | > |
| > | >
| > |
| > |
| > |
| >
|
|
|
