hg: jdk8/tl/jdk: 7173919: Minor optimization of hashing methods

[Ulf Zibis]

Hi Mike,

I like the 1-liner ... :-)
         int  h = hashSeed ^ k.hashCode();

... but I'm still missing a little comment, what this xor with a hashSeed serves for. Such as brief, 
as the next following 3 lines about preventing from collisions.

WeakHashMap.hash(Object) could be private too, instead final.

And last... you have reinserted/left the space after the cast in some occurences. ;-)

-Ulf

Am 14.06.2012 17:27, schrieb mike.duigou at oracle.com:
> Changeset: 505455116320
> Author:    mduigou
> Date:      2012-06-13 16:48 -0700
> URL:       http://hg.openjdk.java.net/jdk8/tl/jdk/rev/505455116320
>
> 7173919: Minor optimization of hashing methods
> Summary: several minor optimizations to hashing methods used by hash map classes
> Reviewed-by: dholmes
>
> ! src/share/classes/java/util/HashMap.java
> ! src/share/classes/java/util/Hashtable.java
> ! src/share/classes/java/util/WeakHashMap.java
> ! src/share/classes/java/util/concurrent/ConcurrentHashMap.java
>
>