RFR (M): 8184346: Clean up G1CMBitmap

Roman Kennke rkennke at redhat.com
Thu Jul 20 14:58:51 UTC 2017

Am 14.07.2017 um 14:09 schrieb Thomas Schatzl:
> Hi Roman,
> On Fri, 2017-07-14 at 13:24 +0200, Roman Kennke wrote:
>> Am 14.07.2017 um 13:12 schrieb Aleksey Shipilev:
>>> Hi Thomas,
>>> On 07/14/2017 12:58 PM, Thomas Schatzl wrote:
>>>>>> The next CR JDK-8184347 will deal with moving G1CMBitmap*
>>>>>> into separate files.
>>>>>  And while you're at it, you may want to move it to gc/shared
>>>>> and renamed it to something like MarkBitmap?
>>>>> https://bugs.openjdk.java.net/browse/JDK-8180193
>>>> Not particularly against this change, but I think we should do
>>>> the move and renaming separately when the change is actually
>>>> required, i.e. just before there is another dependency on it.
>>> I think this would be inconvenient, because when "another
>>> dependency" would come in a large webrev, it would have to include
>>> the CMBitmap move too, complicating reviews.
>> I understood it such that we would post the moving around of gc/g1
>> files to gc/shared right before we'd post Shenandoah (in the not-so-
>> distant future, hopefully). That would work for me. I wouldn't like
>> to include everything in a giant webrev :-P
>   that is exactly what I meant - thanks for your understanding.
> Thomas
I just found out that CMS has its own bitmap class too, and it looks
mostly like a copy of the G1 bitmap class :-) So that would be another
user of a gc/shared bitmap class in the future.


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