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

[David H. <da...@sm...>]

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
>
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