Review Request (S) 8005994: Method annotations are allocated unnecessarily during class file parsing

Karen Kinnear karen.kinnear at oracle.com
Tue Jan 15 09:40:54 PST 2013


I don't see them either. Thanks for checking. 

thanks,
Karen

On Jan 15, 2013, at 12:19 PM, Stefan Karlsson wrote:

> 
> On 15 jan 2013, at 17:58, Karen Kinnear <karen.kinnear at oracle.com> wrote:
> 
>> Stefan,
>> 
>> The code looks good.
> 
> Thanks.
> 
>> Does serviceability agent correctly handle the conditional availability of the information?
> 
> I can't find any references to the annotations in the SA code. Did I miss something?
> 
> thanks,
> StefanK
> 
>> 
>> thanks,
>> Karen
>> 
>> On Jan 15, 2013, at 7:28 AM, Stefan Karlsson wrote:
>> 
>>> http://cr.openjdk.java.net/~stefank/8005994/webrev.00/
>>> 
>>> HotSpot unnecessarily allocates annotations arrays when they are not needed. This memory regression was introduced when the annotation data structures were changed in the Permgen Removal project.
>>> 
>>> This fix:
>>> 1) reintroduces the old null checks
>>> 2) adds a null check before creating the newly introduced method type annotations.
>>> 3) adds a missing null check where the type annotations are used, since they now can be null.
>>> 
>>> Testing:
>>> jprt, jdk_lang and type annotations tests
>>> 
>>> thanks,
>>> StefanK
>> 
> 



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