RFR [10]: 8186517: sun.nio.cs.StandardCharsets$Aliases and ClassMap can be lazily loaded

Claes Redestad claes.redestad at oracle.com
Thu Aug 24 18:06:01 UTC 2017

On 2017-08-24 18:41, Peter Levart wrote:
> On 08/24/2017 06:35 PM, Peter Levart wrote:
>> On 08/24/2017 12:13 AM, Claes Redestad wrote:
>>> Why not. If we went as far as to putting them in 
>>> java.nio.charset.Charset instead,
>>> we'd not even load sun...StandardCharsets during typical bootstrap, 
>>> which would
>>> of course make things even better for startup.
>> Hm... What about aliases? Would you hard-code them in the individual 
>> Charset classes (UTF_8, US_ASCII, ISO_8859_1)? They are currently 
>> generated in the body of sun...StandardCharsets.
>> Regards, Peter
> ...perhaps the generator could be modified to generate a static method 
> per charset, returning an array of aliases  instead of a static final 
> field. StandardCharsets would become very light then as its <clinit> 
> would not do much.

Right, I was looking at it from a different angle (generate them 
directly into each corresponding class), but this way is actually much 
easier and should be easy enough to roll into this patch.

Should be a nice reduction in retained objects on minimal apps.


More information about the nio-dev mailing list