jstack and the target output

Alan Bateman Alan.Bateman at oracle.com
Thu Nov 21 10:18:16 PST 2013

On 21/11/2013 14:47, David Holmes wrote:
> I can recreate this using the minimal VM, which doesn't support 
> libattach. So it definitely seems like something is going wrong in the 
> attach process, but I can't say what. Not sure what debugging hooks we 
> have for the attach mechanism ??
The first attach involves signaling the target VM to start up the attach 
mechanism. So for the minimal VM or a VM running with attach disabled 
(or as Staffan pointed out, running with a different tmp directory) then 
the target VM gets a SIGQUIT and just prints the thread dump. It's hard 
to say what Piotr is running into but I think this at least explains it 
for the minimal VM.


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