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| Re: HotSwap w/ remote debugging ("Obsolete methods on the stack") [message #209318 is a reply to message #209311] |
Fri, 08 July 2005 19:33   |
 Darin Swanson
Messages: 2386
Registered: July 2009 |
Senior Member |
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As stated in the reason for the hotswap failure...it is the VM that is
disallowing whatever change you are making and it results in a unstable
state for the virtual machine.
There really is nothing Eclipse can do about this. You could try a different
VM
Depending on where you are adding the System.out statement in the stack (in
the main method, after a native call, in a inner class, ...) , the VM will
not be happy after the change.
hth
Darins
"James Leone" <jleone@sjm.com> wrote in message
news:456bf823f2c648051d94a7c4f02f5fbf$1@www.eclipse.org...
> Is it possible to use hotswap while doing remote debugging?
>
> I am currently attempting to do so, and not seeing the expected results.
>
> Here is how I am testing things out.
> 1. I build the application in Eclipse
> 2. I drop to the DOS prompt and start the application with ANT (I don't
> compile, I am using the class files that I built with Eclipse. ANT is
> just creating the classpath and launching the VM)
> <jvmarg value="-Xdebug" />
> <jvmarg value="-Xrunjdwp:transport=dt_socket,server=y,address=8000" />
> 3. I go back to Eclipse and attach to the remote process.
> 4. A break point is hit.
> 5. I go down two lines in the code and add a System.out.println statement
> for testing
> 6. I save the file (Build Automatically is turned on)
> 7. I get an error dialog titled "Obsolete methods on the stack"
> "Java HotSpot(TM) Client VM[localhost:8000] contains obsolete methods.
>
> Reason:
> The virtual machine was unable to remove all stack from running old code
> from the call stack. The virtual machine is not supplying the debugger
> with valid data for those frames. Stepping into these obsolete frames may
> be hazardous to the target virtual machine.
>
> Any help is appreciated.
>
> PS. I am using java version "1.4.2_03"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_03-b02)
> Java HotSpot(TM) Client VM (build 1.4.2_03-b02, mixed mode) on Windows
>
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