RFR (S): 8199326: Remove G1 gc time stamp logic (original) (raw)

Stefan Johansson stefan.johansson at oracle.com
Mon Mar 12 15:48:30 UTC 2018


Hi Thomas,

On 2018-03-08 16:46, Thomas Schatzl wrote:

On Thu, 2018-03-08 at 16:18 +0100, Stefan Johansson wrote:

Hi Thomas,

On 2018-03-08 14:33, Thomas Schatzl wrote: Hi,

with the rebuild remsets concurrently changes the last user of the gc time stamps (create live data) has gone away. This change removes all of the corresponding code I could find. Could you review it? CR: https://bugs.openjdk.java.net/browse/JDK-8199326 Webrev: http://cr.openjdk.java.net/~tschatzl/8197932/webrev/ Looks like you pasted the wrong link, and I couldn't find the correct one either. Sorry. The correct link is: http://cr.openjdk.java.net/~tschatzl/8199326/webrev Thanks for doing this cleanup, I found one more reference to the GC timestamp in g1CollectedHeap.hpp:  296   // Clear RSets after a compaction. It also resets the GC time stamps.  297   void clear_rsets_post_compaction();

You can actually remove those two lines completely if you like. I forgot the declaration when removing this method in the fix for: 8177544: Restructure G1 Full GC code

Otherwise the change looks good and if you don't want to remove the declaration in this patch we can create a separate clean up for this.

Cheers, Stefan

Thomas



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