hg: jdk/jdk12: 8215754: ZGC: nmethod is not unlinked from Method before rendezvous handshake

[erik.osterlund at oracle.com]

Changeset: cb7fff9105a8
Author:    eosterlund
Date:      2019-01-11 13:15 +0100
URL:       http://hg.openjdk.java.net/jdk/jdk12/rev/cb7fff9105a8

8215754: ZGC: nmethod is not unlinked from Method before rendezvous handshake
Reviewed-by: pliden, neliasso

! src/hotspot/share/code/nmethod.cpp
! src/hotspot/share/code/nmethod.hpp
! src/hotspot/share/gc/z/zBarrierSetNMethod.cpp
! src/hotspot/share/gc/z/zNMethodTable.cpp