Integrated: 8299701: Remove unused GCCause::_wb_conc_mark

[Kim Barrett]

On Sat, 7 Jan 2023 17:41:04 GMT, Kim Barrett <kbarrett at openjdk.org> wrote:

> Please review this change to remove GCCause::_wb_conc_mark and the supporting
> implementation.  After JDK-8293824 it is no longer used as the cause when
> requesting a GC.
> 
> Note: The implementation in ZGC appears to have never been used.  Prior to
> JDK-8293824 this cause was only used by a G1-specific WB function.  (In the
> deep mists of time it might have also been used to trigger a CMS concurrent
> cycle; I didn't bother looking into that.)
> 
> Testing:
> mach5 tier1

This pull request has now been integrated.

Changeset: ddca2b9b
Author:    Kim Barrett <kbarrett at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/ddca2b9b46110ecae9f67eab9677e96168f7e9cf
Stats:     19 lines in 6 files changed: 0 ins; 11 del; 8 mod

8299701: Remove unused GCCause::_wb_conc_mark

Reviewed-by: eosterlund, iwalulya

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PR: https://git.openjdk.org/jdk/pull/11893