Thread: [Wrapper-user] Exception thrown when invoking Thread.currentThread().sleep(250) with message "The h

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[Wrapper-user] Exception thrown when invoking Thread.currentThread().sleep(250) with message "The handle is invalid"

From: <SA...@sy...> - 2007-04-11 14:52:03

Hi,

I'm using the service wrapper as described in Method 1 - WrapperSimpleApp
Integration (Win32).
I used the templates provided in the /src/bin directory to create
MyService.bat
InstallMyService.bat
UninstallMyService.bat

However, when I run MyService from the Administrative tools>Services
an exception is thrown when I invoke Thread.currentThread().sleep(250);
with the message:  The handle is invalid.
after which the service stops, following a normal shutdown routine.

I'm running on Win XP SP2
Java Service Wrapper 3.2.3
JDK 1.5.0_11

Bellow is a snippet from the log file:

INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: invoking main
method
INFO   | jvm 1    | 2007/04/11 09:39:12 | 09:39:12,960 ERROR
MyServiceApp:80 - Interrupted. The handle is invalid
INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: main method
completed
INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: start(args)
end.  Main Completed=true, exitCode=null
INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperListener.start runner
thread stopped.
INFO   | jvm 1    | 2007/04/11 09:39:12 | returned from
WrapperListener.start()
INFO   | jvm 1    | 2007/04/11 09:39:12 | Send a packet STARTED :
DEBUG  | wrapperp | 2007/04/11 09:39:12 | read a packet STARTED :
DEBUG  | wrapper  | 2007/04/11 09:39:12 | JVM signalled that it was
started.
INFO   | jvm 1    | 2007/04/11 09:39:13 | Startup runner thread stopped.
INFO   | jvm 1    | 2007/04/11 09:39:13 | Wrapper Manager: ShutdownHook
started
INFO   | jvm 1    | 2007/04/11 09:39:13 | WrapperManager.stop(0) called by
thread: Wrapper-Shutdown-Hook
INFO   | jvm 1    | 2007/04/11 09:39:13 | Send a packet STOP : 0
DEBUG  | wrapperp | 2007/04/11 09:39:13 | read a packet STOP : 0
DEBUG  | wrapper  | 2007/04/11 09:39:13 | JVM requested a shutdown. (0)


and a snippet from my java class:


public class MyServiceApp{
      public static void main(String[] args) {
            MyServiceApp myService = new MyServiceApp();
            myService .run();
      }

      public void run(){
            //create new threads here
            ....
            //sleep
            try {
                  Thread.currentThread().sleep(250);
            } catch (Exception e) {
                  log.error("Interrupted. " + e.getMessage());
            }
      }
}


Any ideas are welcomed.


Regards,
Sabina Albu

Re: [Wrapper-user] Exception thrown when invoking Thread.currentThread().sleep(250) with message "The handle is invalid"

From: David H. <da...@sm...> - 2007-04-11 15:18:51

I just wanted to clarify something from you:

You have a run() method inside your service app, that you call directly 
from the main() method. Are you intending this run() method to be 
running in it's own thread, (whilst the starting thread, that executes 
main() continues). If this is the case you should be calling 
myService.start(); (and also be making the MyServiceApp extend Thread).

When the wrapper runs an application using method 1, it doesn't exactly 
run the same way as it would without the wrapper. For a start, there are 
other threads running by the time the code reaches your main() method 
than there is without the wrapper. I suspect that you calling the 
Thread.currentThread.sleep(250) is causing a wrapper thread to sleep, 
and thus to lose a handle to some native resource.

David Hayes

SA...@sy... wrote:
> Hi,
>
> I'm using the service wrapper as described in Method 1 - WrapperSimpleApp
> Integration (Win32).
> I used the templates provided in the /src/bin directory to create
> MyService.bat
> InstallMyService.bat
> UninstallMyService.bat
>
> However, when I run MyService from the Administrative tools>Services
> an exception is thrown when I invoke Thread.currentThread().sleep(250);
> with the message:  The handle is invalid.
> after which the service stops, following a normal shutdown routine.
>
> I'm running on Win XP SP2
> Java Service Wrapper 3.2.3
> JDK 1.5.0_11
>
> Bellow is a snippet from the log file:
>
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: invoking main
> method
> INFO   | jvm 1    | 2007/04/11 09:39:12 | 09:39:12,960 ERROR
> MyServiceApp:80 - Interrupted. The handle is invalid
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: main method
> completed
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: start(args)
> end.  Main Completed=true, exitCode=null
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperListener.start runner
> thread stopped.
> INFO   | jvm 1    | 2007/04/11 09:39:12 | returned from
> WrapperListener.start()
> INFO   | jvm 1    | 2007/04/11 09:39:12 | Send a packet STARTED :
> DEBUG  | wrapperp | 2007/04/11 09:39:12 | read a packet STARTED :
> DEBUG  | wrapper  | 2007/04/11 09:39:12 | JVM signalled that it was
> started.
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Startup runner thread stopped.
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Wrapper Manager: ShutdownHook
> started
> INFO   | jvm 1    | 2007/04/11 09:39:13 | WrapperManager.stop(0) called by
> thread: Wrapper-Shutdown-Hook
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Send a packet STOP : 0
> DEBUG  | wrapperp | 2007/04/11 09:39:13 | read a packet STOP : 0
> DEBUG  | wrapper  | 2007/04/11 09:39:13 | JVM requested a shutdown. (0)
>
>
> and a snippet from my java class:
>
>
> public class MyServiceApp{
>       public static void main(String[] args) {
>             MyServiceApp myService = new MyServiceApp();
>             myService .run();
>       }
>
>       public void run(){
>             //create new threads here
>             ....
>             //sleep
>             try {
>                   Thread.currentThread().sleep(250);
>             } catch (Exception e) {
>                   log.error("Interrupted. " + e.getMessage());
>             }
>       }
> }
>
>
> Any ideas are welcomed.
>
>
> Regards,
> Sabina Albu
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Wrapper-user mailing list
> Wra...@li...
> https://lists.sourceforge.net/lists/listinfo/wrapper-user
>
>
>
>

Re: [Wrapper-user] Exception thrown when invoking Thread.currentThread().sleep(250) with message "The handle is invalid"

From: Andreas W. <And...@ag...> - 2007-04-11 16:05:59

Hi Sabina,

As I assume that the run() method is not intended to be run inside an =
own thread, it runs inside the main thread.
Therefore, calling a Thread.sleep() in the main thread is not a good =
idea as it may interfere with the JVM or the wrapper.
You should only call the sleep() method in the context of an own =
thread's run() method to ensure that the proper thread is sleeping.

You should also not use Thread.currentThread().sleep(250) as sleep() is =
a static method and prefixing it with currentThread() will have no =
effect (see
http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Thread.html#sleep(long)=
).

If you would provide more info about what you are trying to achieve, I =
could be more of a help.

--Andreas

-----Original Message-----
From: wra...@li... =
[mailto:wra...@li...] On Behalf Of David =
Hayes
Sent: Wednesday, April 11, 2007 17:19
To: wra...@li...
Subject: Re: [Wrapper-user] Exception thrown when invoking =
Thread.currentThread().sleep(250) with message "The handle is invalid"

I just wanted to clarify something from you:

You have a run() method inside your service app, that you call directly=20
from the main() method. Are you intending this run() method to be=20
running in it's own thread, (whilst the starting thread, that executes=20
main() continues). If this is the case you should be calling=20
myService.start(); (and also be making the MyServiceApp extend Thread).

When the wrapper runs an application using method 1, it doesn't exactly=20
run the same way as it would without the wrapper. For a start, there are =

other threads running by the time the code reaches your main() method=20
than there is without the wrapper. I suspect that you calling the=20
Thread.currentThread.sleep(250) is causing a wrapper thread to sleep,=20
and thus to lose a handle to some native resource.

David Hayes

SA...@sy... wrote:
> Hi,
>
> I'm using the service wrapper as described in Method 1 - =
WrapperSimpleApp
> Integration (Win32).
> I used the templates provided in the /src/bin directory to create
> MyService.bat
> InstallMyService.bat
> UninstallMyService.bat
>
> However, when I run MyService from the Administrative tools>Services
> an exception is thrown when I invoke =
Thread.currentThread().sleep(250);
> with the message:  The handle is invalid.
> after which the service stops, following a normal shutdown routine.
>
> I'm running on Win XP SP2
> Java Service Wrapper 3.2.3
> JDK 1.5.0_11
>
> Bellow is a snippet from the log file:
>
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: invoking =
main
> method
> INFO   | jvm 1    | 2007/04/11 09:39:12 | 09:39:12,960 ERROR
> MyServiceApp:80 - Interrupted. The handle is invalid
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: main =
method
> completed
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: =
start(args)
> end.  Main Completed=3Dtrue, exitCode=3Dnull
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperListener.start runner
> thread stopped.
> INFO   | jvm 1    | 2007/04/11 09:39:12 | returned from
> WrapperListener.start()
> INFO   | jvm 1    | 2007/04/11 09:39:12 | Send a packet STARTED :
> DEBUG  | wrapperp | 2007/04/11 09:39:12 | read a packet STARTED :
> DEBUG  | wrapper  | 2007/04/11 09:39:12 | JVM signalled that it was
> started.
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Startup runner thread =
stopped.
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Wrapper Manager: =
ShutdownHook
> started
> INFO   | jvm 1    | 2007/04/11 09:39:13 | WrapperManager.stop(0) =
called by
> thread: Wrapper-Shutdown-Hook
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Send a packet STOP : 0
> DEBUG  | wrapperp | 2007/04/11 09:39:13 | read a packet STOP : 0
> DEBUG  | wrapper  | 2007/04/11 09:39:13 | JVM requested a shutdown. =
(0)
>
>
> and a snippet from my java class:
>
>
> public class MyServiceApp{
>       public static void main(String[] args) {
>             MyServiceApp myService =3D new MyServiceApp();
>             myService .run();
>       }
>
>       public void run(){
>             //create new threads here
>             ....
>             //sleep
>             try {
>                   Thread.currentThread().sleep(250);
>             } catch (Exception e) {
>                   log.error("Interrupted. " + e.getMessage());
>             }
>       }
> }
>
>
> Any ideas are welcomed.
>
>
> Regards,
> Sabina Albu
>
> =
-------------------------------------------------------------------------=

> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to =
share your
> opinions on IT & business topics through brief surveys-and earn cash
> =
http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D=
DEVDEV
> _______________________________________________
> Wrapper-user mailing list
> Wra...@li...
> https://lists.sourceforge.net/lists/listinfo/wrapper-user
>
>
>
>  =20

-------------------------------------------------------------------------=

Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share =
your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=3Djoin.php&p=3Dsourceforge&CID=3D=
DEVDEV
_______________________________________________
Wrapper-user mailing list
Wra...@li...
https://lists.sourceforge.net/lists/listinfo/wrapper-user

Re: [Wrapper-user] Exception thrown when invoking Thread.currentThread().sleep(250) with message "The handle is invalid"

From: Leif M. <le...@ta...> - 2007-04-11 22:17:17

Sabina,
    Looking over your code, I do not see anything that you are doing "wrong"
when using the WrapperSimpleApp (Method 1) integration method.

    Calling sleep in the main method of your application is perfectly valid.
Your use of the run() method name is a bit non-java standard in that it is
usually the method name called for the root of a new thread.  But the way
you are calling it, it is just another method name, so no problem.   Nothing
you are doing in your code snippet should be affecting the Wrapper.

    You did not send the beginning of your run method, most likely because
you feel it does not affect things.   My guess is that something there may
be causing this, but I can't think off the top of my head what it would be.

    I have seen cases in the past where an exception was being thrown from
a different location than I had thought due to ambiguous message text.  
Could
you change your code as follows.   The first is to make sure that sleep is
working before you do anything else,  the second block is to see what the
exact exception is and what its full call stack is.

---
public class MyServiceApp{
      public static void main(String[] args) {
            System.out.println("MAIN1");
            try {
                  Thread.sleep(250);
            } catch (Exception e) {
                  log.error("Interrupted Main. " + e);
                  e.printStackTrace();
            }
            System.out.println("MAIN2");

            MyServiceApp myService = new MyServiceApp();
            myService .run();
      }

      public void run(){
            System.out.println("HERE1");
            try {
                  Thread.sleep(250);
            } catch (Exception e) {
                  log.error("Interrupted1. " + e);
                  e.printStackTrace();
            }
            System.out.println("HERE2");

            //create new threads here
            ....
            //sleep
            System.out.println("HERE3");
            try {
                  Thread.sleep(250);
            } catch (Exception e) {
                  log.error("Interrupted. " + e);
                  e.printStackTrace();
            }
            System.out.println("HERE4");
      }
}
---

Does anything happen in your MyServiceApp constructor?

Cheers,
Leif

SA...@sy... wrote:
> Hi,
>
> I'm using the service wrapper as described in Method 1 - WrapperSimpleApp
> Integration (Win32).
> I used the templates provided in the /src/bin directory to create
> MyService.bat
> InstallMyService.bat
> UninstallMyService.bat
>
> However, when I run MyService from the Administrative tools>Services
> an exception is thrown when I invoke Thread.currentThread().sleep(250);
> with the message:  The handle is invalid.
> after which the service stops, following a normal shutdown routine.
>
> I'm running on Win XP SP2
> Java Service Wrapper 3.2.3
> JDK 1.5.0_11
>
> Bellow is a snippet from the log file:
>
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: invoking main
> method
> INFO   | jvm 1    | 2007/04/11 09:39:12 | 09:39:12,960 ERROR
> MyServiceApp:80 - Interrupted. The handle is invalid
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: main method
> completed
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperSimpleApp: start(args)
> end.  Main Completed=true, exitCode=null
> INFO   | jvm 1    | 2007/04/11 09:39:12 | WrapperListener.start runner
> thread stopped.
> INFO   | jvm 1    | 2007/04/11 09:39:12 | returned from
> WrapperListener.start()
> INFO   | jvm 1    | 2007/04/11 09:39:12 | Send a packet STARTED :
> DEBUG  | wrapperp | 2007/04/11 09:39:12 | read a packet STARTED :
> DEBUG  | wrapper  | 2007/04/11 09:39:12 | JVM signalled that it was
> started.
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Startup runner thread stopped.
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Wrapper Manager: ShutdownHook
> started
> INFO   | jvm 1    | 2007/04/11 09:39:13 | WrapperManager.stop(0) called by
> thread: Wrapper-Shutdown-Hook
> INFO   | jvm 1    | 2007/04/11 09:39:13 | Send a packet STOP : 0
> DEBUG  | wrapperp | 2007/04/11 09:39:13 | read a packet STOP : 0
> DEBUG  | wrapper  | 2007/04/11 09:39:13 | JVM requested a shutdown. (0)
>
>
> and a snippet from my java class:
>
>
> public class MyServiceApp{
>       public static void main(String[] args) {
>             MyServiceApp myService = new MyServiceApp();
>             myService .run();
>       }
>
>       public void run(){
>             //create new threads here
>             ....
>             //sleep
>             try {
>                   Thread.currentThread().sleep(250);
>             } catch (Exception e) {
>                   log.error("Interrupted. " + e.getMessage());
>             }
>       }
> }
>
>
> Any ideas are welcomed.
>
>
> Regards,
> Sabina Albu
>
> -------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share your
> opinions on IT & business topics through brief surveys-and earn cash
> http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Wrapper-user mailing list
> Wra...@li...
> https://lists.sourceforge.net/lists/listinfo/wrapper-user
>
>