RFR: 8161203: ResourceBundle.getBundle performance regression

[Peter Levart]

Hi Masayoshi,

Previously the CacheKey::clone() method cleared a reference to 
'providers' in the clone making the provides unreachable from the clone 
and making the clone unable to obtain providers. Now you also reset the 
'providersChecked' flag which makes the clone be able to re-obtain the 
providers. This is dangerous as the clone is used as a key in the cache 
and is strongly reachable from the cache. A slight future modification 
of code could unintentionally produce a class loader leak. To prevent 
that, I would somehow mark the clone so that any attempt to invoke 
getProviders() on the clone would throw IllegalStateException.

Regards, Peter

On 07/21/2016 06:14 AM, Masayoshi Okutsu wrote:
> Hi,
>
> Please review the fix for JDK-8161203. The fix is to lazily load 
> ResourceBundleProviders. It's not necessary to load providers before 
> cache look-up.
>
> Issue:
> https://bugs.openjdk.java.net/browse/JDK-8161203
>
> Webrev:
> http://cr.openjdk.java.net/~okutsu/9/8161203/webrev.01
>
> Thanks,
> Masayoshi
>