[9, 8u40] RFR (M): 8057020: LambdaForm caches should support eviction

[Vladimir Ivanov]

Paul, John, thanks!

Best regards,
Vladimir Ivanov

On 12/3/14, 10:38 AM, John Rose wrote:
> Reviewed.
>
> I sympathize with Paul's "gnarly" comment.
>
> Nice bit of stream-ology (rheology) in the test code.
>
> Regarding:
>
>> On Dec 2, 2014, at 8:20 AM, Vladimir Ivanov <vladimir.x.ivanov at oracle.com> wrote:
>>>
>>> In src/java.base/share/classes/java/lang/invoke/LambdaFormEditor.java
>>>
>>>   366                     lambdaForm.transformCache = c = ta;
>>>
>>> Do you need to set "c"? It's a local variable and by this point the method should return rather than loop.
>> I did it mostly as a cleanup. Now I think that it doesn't help much. Removed (+ similar change in another place).
>
> The "c = " bit can be viewed as a bug-stopper.  It prevents a later expression (if introduced in a future change) from accidentally using 'c' and getting an out-of-date value.  A better bug-stopper would be a declaration that "c is dead as of this point, and cannot be used any more", but the language does not support that.  I don't mind seeing the assignment deleted.
>
> — John
>
>> On Dec 1, 2014, at 8:58 AM, Vladimir Ivanov <vladimir.x.ivanov at oracle.com> wrote:
>>
>> http://cr.openjdk.java.net/~vlivanov/8057020/webrev.00/
>> https://bugs.openjdk.java.net/browse/JDK-8057020
>