RFR: 8162955: Activate anonymous class loading for small sources

[Marcus Lagergren]

Interesting
+1

Is it possible to make this a flag with default “on", and check in a microbenchmark that proves this?

Does this affect runtime performance, i.e. program execution speed, in any way that you can measure?

Regards
Marcus

> On 09 Aug 2016, at 12:10, Hannes Wallnöfer <hannes.wallnoefer at oracle.com> wrote:
> 
> It’s pretty drastic, and has gotten more pronounced in recent JDK 9 builds. Running test programs from the issues linked in the Jira description there’s somewhere between 30% and 100% speedup from using anonymous classes.
> 
> Note that the intention has always been to use anonymous classes for short scripts, we just didn’t realize many users compile one-liners using the Java API.
> 
> Hannes
> 
> 
>> Am 09.08.2016 um 11:24 schrieb Marcus Lagergren <marcus at lagergren.net>:
>> 
>> Do you have any benchmark examples with better and worse results?
>> 
>> Just curious
>> 
>> /M
>> 
>>> On 04 Aug 2016, at 13:48, Hannes Wallnöfer <hannes.wallnoefer at oracle.com> wrote:
>>> 
>>> Please review 8162955: Activate anonymous class loading for small sources.
>>> 
>>> Bug: https://bugs.openjdk.java.net/browse/JDK-8162955
>>> Webrev: http://cr.openjdk.java.net/~hannesw/8162955/webrev/
>>> 
>>> The size threshold of 512 bytes I chose is arbitrary. It seems to fit all reported cases which consist of firing lots of one-liner scripts where quick loading is more important than optimization.
>>> 
>>> Thanks,
>>> Hannes
>> 
>