Obtaining methods executed at least once?

[Ben Evans]

Hi Andreas,

OK, I'll bite with a couple of questions:

1) Why do you want this information? Is it purely informative, or are
you planning to make use of it in some way? If you're planning to use
it - what uses do you have in mind?

2) What do you mean by "inlined at compilation". When dealing with
HotSpot, always remember that there are two separate things which
could be thought of as 'compilation' - there's the process which
creates classfiles (e.g. javac) and there's the process which creates
machine code from hot methods - JIT compilation. It isn't clear to me
which of these two processes you mean.

Thanks,

Ben

On Wed, May 16, 2012 at 7:11 AM, David Holmes <david.holmes at oracle.com> wrote:
> Andreas,
>
> I've cc'd this to hotspot-dev which is the right place to ask.
>
> Please drop the discuss list from further replies.
>
> David
>
>
> On 16/05/2012 6:56 PM, Andreas Sewe wrote:
>>
>> Hi all,
>>
>> I hope this is the right mailing list to ask such questions (if not,
>> please point me to the right one), as I couldn't find an obvious
>> analogue to lists like jikesrvm-researchers.
>>
>> Is the a way (preferably using "diagnostic" rather than "develop"
>> options) to obtain a list of all methods executed at least once?
>> Currently I am considering "-XX:-UseInterpreter -XX:+LogCompilation",
>> but this seems to be an awfully indirect way to achieve my goal -- and
>> it may not even give correct results if the only call of m() is inlined
>> during compilation.
>>
>> Any help is greatly appreciated.
>>
>> Best wishes,
>>
>> Andreas