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Home » Eclipse Projects » Eclipse Platform » Threads and Monitors view does not work...
Threads and Monitors view does not work... [message #45093] Fri, 23 May 2003 10:14 Go to next message
Michael Rumpf is currently offline Michael RumpfFriend
Messages: 1
Registered: July 2009
Junior Member
Hi,

I've searched for information on how to use the new "Threads and
Monitors" Eclipse 2.1 Debugger view. Unfortunately I couldn't find anything.

My problem is that the view just shows the message "The VM does not
support the retrieval of monitor information".

After searching the Eclipse sources I discovered that the Java Debugger
Interface method GetCapabilities is used for the project and JDKs since
1.2 provide this kind information and should thus be able to show
monitor states.
I assume that no switch on the debugee VM is necessary to get this
information from a Remote VM. I use standard Sun VMs 1.4.1_01+02 on
Linux, Solaris, and Windows (remote debugee), and Eclipse on Linux and
Windows (debugger).
However, under none of the configurations I was able to get the
information from the remote debugee.

Because Eclipse directly implements the JDWP I assume that there might
be a bug in interpreting the reply from a JDWPCommandPacket with method
id VM_CAPABILITIES!?

My question is now is there someone using the new view (it must have
been working for some configurations because the screenshot in the
release notes shows the feature working) and if yes under which
configuration? What am I doing wrong here?

Thanks,
Michael
Re: Threads and Monitors view does not work... [message #45124 is a reply to message #45093] Fri, 23 May 2003 10:56 Go to previous message
Eclipse UserFriend
Originally posted by: hcs33.egon.gyaloglo.hu

Hi,

Afaik the classic Sun VM-s and the new 1.4.2 hotspot are implements only the
necessary calls, so you have to use a jdk1.3.x with the classic vm or the
new 1.4.2 beta to make this view work.

HTH,
Regards,
Csaba

"Michael Rumpf" <michael@rumpfonline.de> wrote in message
news:3ECDF482.205@rumpfonline.de...
> Hi,
>
> I've searched for information on how to use the new "Threads and
> Monitors" Eclipse 2.1 Debugger view. Unfortunately I couldn't find
anything.
>
> My problem is that the view just shows the message "The VM does not
> support the retrieval of monitor information".
>
> After searching the Eclipse sources I discovered that the Java Debugger
> Interface method GetCapabilities is used for the project and JDKs since
> 1.2 provide this kind information and should thus be able to show
> monitor states.
> I assume that no switch on the debugee VM is necessary to get this
> information from a Remote VM. I use standard Sun VMs 1.4.1_01+02 on
> Linux, Solaris, and Windows (remote debugee), and Eclipse on Linux and
> Windows (debugger).
> However, under none of the configurations I was able to get the
> information from the remote debugee.
>
> Because Eclipse directly implements the JDWP I assume that there might
> be a bug in interpreting the reply from a JDWPCommandPacket with method
> id VM_CAPABILITIES!?
>
> My question is now is there someone using the new view (it must have
> been working for some configurations because the screenshot in the
> release notes shows the feature working) and if yes under which
> configuration? What am I doing wrong here?
>
> Thanks,
> Michael
>
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