RFR: 8220343: Move scavenge_root_nmethods from shared code
stefan.karlsson at oracle.com
Thu Mar 14 10:36:37 UTC 2019
The call to prune the scavengable nmethods were inadvertently moved to
the old location of CodeCache::gc_prolog call, but should have been
moved to the old location of the CodeCache::gc_epilogue call. This does
not affect the functionality, but delays the pruning until next full or
On 2019-03-11 15:23, Stefan Karlsson wrote:
> Hi all,
> Please review this patch to move the scavenge root code out from
> CodeCache and nmethod.
> The CodeCache::scavenge_root_nmethods_do function and its implementation
> in CodeCache and nmethod, is only used by set of our GCs (Serial,
> Parallel, and CMS), but not by G1, ZGC, Shenandoah, or Epsilon. I want
> to move all of that into GC subsystem and then only let those GCs using
> it pay the cost of having that code.
> This is a continuation of the work of the GC Interface, where G1, ZGC,
> Shenandoah, and Epsilon, uses the register_nmethod, unregister_nmethod,
> and flush_nmethod calls, but the other GCs don't.
> This patch builds upon:
> JDK-8220411: Remove ScavengeRootsInCode=0 code
> and also depends on the the resolution of:
> JDK-8220342: Remove scavenge_root_nmethods_do from
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