Re: [rvm-research] Approach for fixing the RVM-1017(Implicit unlock in synchronized method relies on local variable 0 )

Thanks Dave,

One question is , how to debug? which tools are available for debugging,.
And where can I find coredumps generated by rvm

Thank You

Pushparaj

On Thu, May 9, 2013 at 6:52 AM, David P Grove <[email protected]> wrote:

> Pushparaj Motamari <[email protected]> wrote on 05/07/2013 09:26:35
> PM:
>
> >
> > I have fixed the issue for optimizing compiler
>
>
> Nice.  The fixes are independent, so if you wanted to contribute (
> http://jikesrvm.org/Contributions) the opt compiler patch by attaching it
> to RVM-1017 we could merge that in without waiting for the baseline
> compiler fix.
>
>
> > , now I started
> > working on BaseLine Compiler. Please find the patch attached with
> > the mail. The build getting successful , but when I try to run the
> program  I am getting the gollowing exceptions
> > JikesRVM: TROUBLE.  Got a signal (Segmentation fault; #11) from outside
> the VM's address space in thread 0xb7404940.
>
> I suspect you may also need to change *STACKFRAME_HEADER_SIZE* in
> org.jikesrvm.ia32.StackframeLayoutConstants and then trace through the
> code to see where else constants in StackframeLayoutConstants are
> referenced to see what else needs to be adjusted.  My guess is that adding
> the extra slot to a baseline compiled stackframe is going to have small,
> but rippling changes through various parts of the baseline and JNI
> compilers and runtime that do low-level stack manipulation.
>
> --dave
>
>
>
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Learn Graph Databases - Download FREE O'Reilly Book
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their applications. This 200-page book is written by three acclaimed 
leaders in the field. The early access version is available now. 
Download your free book today! http://p.sf.net/sfu/neotech_d2d_may

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