HotSpot Hacking

[Ilya Mirsky]

Hi Tom,

Yep, it seems to be a library problem.
Although I did install the custom-built jdk as the default java on my Linux
system,
it seems that it doesn't use the correct library.
Tried to point eclipse to use jdk from it's build directory, without
success either.

How do I install the library, and what should be the command line flags ?

Thanks a lot, I appreciate your assistance.

---
Best Regards,
Ilya Mirsky
<http://www.cs.bgu.ac.il/~mirskyil/>  <http://il.linkedin.com/in/ilyamirsky>
   <https://www.facebook.com/ilya.mirsky>



On Tue, Mar 13, 2012 at 6:08 PM, Tom Rodriguez <tom.rodriguez at oracle.com>wrote:

>
> On Mar 13, 2012, at 4:52 AM, Ilya Mirsky wrote:
>
> > Hi,
> >
> > I'm trying (unsuccessfully) to add a method to the Unsafe class.
> > As a start I'm trying to duplicate an existing method.
> > I add the declaration of the new method to Unsafe.java, and update
> unsafe.cpp as well.
> > I register the new method in unsafe.cpp and vmSymbols.hpp, following the
> example of the original method.
> >
> > Then I compile the jdk, and want to test the change.
> > A test program, which uses the new method, compiles but fails to run due
> to an UnsatisfiedLinkError.
> >
> > So my question is, what are the steps of adding a native method to
> HotSpot?
> > Is there is some tutorial or documentation available?
>
> It sounds like you've taken the right steps on the hotspot side so check
> for pilot error.  Have you installed the library properly and are you using
> the right command line flags to get that library version loaded?  Is the
> entry point getting registered properly when unsafe is initialized?  Step
> through that code and see what's happening.
>
> tom
>
> >
> > Thanks in advance,
> >
> > ---
> > Best Regards,
> > Ilya Mirsky
> >
> >
>
>
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