RFR: 7113878: LogManager - namedLoggers should be ConcurrentHashMap instead of Hashtable

[Daniel Fuchs]

On 30/03/15 16:18, Jason Mehrens wrote:
> For the test shouldn't you include a test for getLoggerNames to check that if the returned Enumeration is an instanceof Iterator then its remove method must throw an UnsupportedOperationException?  That makes it clear as to why you are using Collections.enumeration.

Good idea - it wouldn't hurt.

-- daniel

>
>
> Jason
>
> ----------------------------------------
>> Date: Mon, 30 Mar 2015 11:27:21 +0200
>> From: daniel.fuchs at oracle.com
>> To: martinrb at google.com; claes.redestad at oracle.com
>> Subject: Re: RFR: 7113878: LogManager - namedLoggers should be ConcurrentHashMap instead of Hashtable
>> CC: core-libs-dev at openjdk.java.net
>>
>> Thanks all for your reviews!
>>
>> If I don't hear more then
>> http://cr.openjdk.java.net/~dfuchs/webrev_7113878/webrev.01/
>>
>> is what I'm going to push.
>>
>> best regards,
>>
>> -- daniel
>>
>> On 28/03/15 00:39, Martin Buchholz wrote:
>>> Claes,
>>>
>>> Right you are - I stand corrected!
>>>
>>> On Fri, Mar 27, 2015 at 4:02 PM, Claes Redestad <claes.redestad at oracle.com>
>>> wrote:
>>>
>>>>
>>>> On 2015-03-27 21:12, Martin Buchholz wrote:
>>>>
>>>>> Random advice - the default concurrency level of ConcurrentHashMap is 16,
>>>>> and that is almost always more than needed, probably also including here.
>>>>>
>>>>
>>>> I believe JSR-166e (JDK8 and onwards) mostly removed the concept of
>>>> concurrency level from ConcurrentHashMap (while it's still there in some
>>>> constructors to confuse things). I recall some tests showing that the
>>>> difference in footprint between CHM and regular HashMap/Hashtable is now
>>>> negligible even for empty, default-initialized instances.
>>>>
>>>> /Claes
>>>>
>>