RFR 8037106: Optimize Arrays.asList(...).forEach

[Martin Buchholz]

On Mon, Mar 17, 2014 at 11:36 AM, Ulf Zibis <Ulf.Zibis at cosoco.de> wrote:

>
>
> Am 14.03.2014 16:46, schrieb Martin Buchholz:
>
>  +            final int size = a.length;
>> +            for (int i = 0; i < size; i++) {
>>
>> I like to write this using the idiom
>>
>> for (int i = 0, size = ...; i < size; i++)
>>
>
> This is not thread-proof (Given there is no: final E[] a = this.a;). If a
> becomes replaced concurrently while looping, size becomes invalid as length
> of a.
>

That's orthogonal, I think.

Certainly, the reflex in concurrent code is to always copy fields to
locals, for both performance and correctness.