SA.NEXT - SA feedback needed

[Dmitry Samersoff]

Volker,

For brief look SA doesn't need vtable symbols.

But It's better to re-check it.

Could you file a bug and assign it to me?

-Dmitry

On 2014-02-10 13:47, Volker Simonis wrote:
> Hi,
> 
> maybe slightly off-topic, but I want to ask if the SA agent needs the
> vtable symbols of all HS classes which are exported by partially
> generated mapfiles (make/linux/makefiles/build_vm_def.sh) during the
> linking of the VM.
> 
> I recently found out (see this thread:
> http://mail.openjdk.java.net/pipermail/hotspot-dev/2014-February/012426.html)
> that compiling the HS with gcc 4.3 and later deasn't export this
> symbols any more, even if they are listed in the map file.
> 
> So the simple question is - does the SA agent relies on the vtable
> symbols beeing exported or not? If yes, we should think about a fix.
> If not, we should remove the magic which generates the vtable symbols
> in the map files (i.e. build_vm_def.sh) from the build.
> 
> Regards,
> Volker
> 
> PS: I didn't use SA agent until now although I think it is an
> intersecting tool. I mostly use the internal tools from
> utilities/debug.cpp. Another possibility used by some colleagues is to
> use the Python scripting capabilities offered by GDB to achieve a
> similar functionality. The downside of that approach is of course that
> is is platform-dependent (i.e. gdb-only).
> 
> On Fri, Jan 31, 2014 at 3:19 PM, Dmitry Samersoff
> <dmitry.samersoff at oracle.com> wrote:
>> Hi Everyone,
>>
>> I would like to start a discussion about future of hotspot debugger,
>> known as serviceability agent or SA.
>>
>> How you typically use it? What do you expect from it?  What is missed?
>>
>> Please, share your stories and wishes.
>>
>> And please, fill the small quiz:
>>
>> 1. How often do you use SA?
>>
>> 2. On what platform do you use SA?
>>
>> 3. Do you use it to analyze life processes or coredumps?
>>
>> 5. What other debuggers do you use to debug hotspot issues
>>
>> -Dmitry
>>
>> --
>> Dmitry Samersoff
>> Oracle Java development team, Saint Petersburg, Russia
>> * I would love to change the world, but they won't give me the sources.


-- 
Dmitry Samersoff
Oracle Java development team, Saint Petersburg, Russia
* I would love to change the world, but they won't give me the sources.