8010309 : PlatformLogger: isLoggable performance / waste due to HashMap<Integer, Level> leads to Integer allocations (boxing)

[Peter Levart]

On 03/27/2013 10:32 AM, Laurent Bourgès wrote:
> Hi Mandy, Peter,
>
> thanks for the review.
>
> I wanted the patch to be small and only in PlatformLogger class 
> without API change to be easily backported to jdk7u.
> Do you think this bug is JDK8 only ?

I think this API level change is source-level-compatible, so only a JDK 
rebuild is required. Will try it anyway and check whether this is true. 
If it is then the backport is not a problem.

Regards, Peter

>
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8010309
>
> I submitted another patch concerning missing 
> PlatformLogger.isLoggable(level) in the JDK (java.net 
> <http://java.net>, java.awt mainly) but it is not widely used as I 
> thought first.
>
> see http://mail.openjdk.java.net/pipermail/awt-dev/2013-March/004459.html
>
> Maybe in the future, other projects or JDK parts will use it if it is 
> no more a performance bottleneck.
>
> Cheers,
> Laurent
>