RFR: 8198888: Reduce string allocation churn in InvokerBytecodeGenerator

Claes Redestad claes.redestad at oracle.com
Thu Mar 1 13:31:05 UTC 2018


That few, huh? Well, if you ask me the VM internal name and the java 
class names should have been synced up long ago. :-)

I'd not be averse to some real API point in a future RFE. I think this 
has been dodged in the past to avoid leaking the VM internal 
representation everywhere.

/Claes

On 2018-03-01 14:17, Peter Levart wrote:
> Hi Claes,
>
>  623             name = c.getName().replace('.', '/');
>
> Did you know that there are 319 occurrences of .replace('.', '/') in 
> JDK sources and tests (45 occurrences in java.base without tests)?
>
> Isn't that enough to create a special API on the java.lang.Class that 
> would cache this or at least something in an internal java.base package?
>
> Regards, Peter
>
> On 03/01/2018 01:14 PM, Claes Redestad wrote:
>> Hi,
>>
>> two trivial optimizations that get rid of a few percent on ISC 
>> startup tests.
>>
>> Webrev: http://cr.openjdk.java.net/~redestad/8198888/jdk.00/
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8198888
>>
>> Thanks!
>>
>> /Claes
>



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