RFR (S) 8213373: Bulk MarkBitMap clearing methods

Aleksey Shipilev shade at redhat.com
Wed Nov 14 12:06:32 UTC 2018

On 11/14/2018 01:03 PM, Roman Kennke wrote:
> The change looks good & useful. Thanks!

Thanks. I'd like G1 people to ack the change, as it touches some of the internal code.

> Makes me wonder if the decision large or not could be made in
> MarkBitMap, i.e. if range exceeds a certain threshold, switch to large
> clearing, otherwise do small. ? Doesn't seem very important though.

Yes, it eventually should. Current Bitmap API puts that responsibility on caller, and MarkBitMap
delegates it to callers again. In future, we need to merge "large" Bitmap methods into the usual
ones, and then use those single methods from MarkBitMap.


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