RFR 8200696 : Optimal initial capacity of java.lang.Class.enumConstantDirectory

[Claes Redestad]

Hi Ivan,

looks good.

Nit: maybe (int)(universe.length / 0.75f) + 1 to keep fp arithmetic to a 
minimum.

/Claes

On 2018-04-04 01:22, Ivan Gerasimov wrote:
> Hello!
>
> Yet another occurrence of not-optimally pre-sized HashMap.
>
> When java.lang.Class.enumConstantDirectory is created, the initial 
> capacity is set to be (2 * universe.length), which is more than 
> necessary in some cases.
>
> Choosing the capacity optimally will allow us to save a few bytes with 
> some enum classes.
>
> Would you please help review this trivial fix?
>
> BUGURL: https://bugs.openjdk.java.net/browse/JDK-8200696
> WEBREV: http://cr.openjdk.java.net/~igerasim/8200696/00/webrev/
>