src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/z/ZGlobalsForVMStructs.java

*** 1,7 ****
  /*
!  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
--- 1,7 ----
  /*
!  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   *
   * This code is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License version 2 only, as
   * published by the Free Software Foundation.
*** 31,40 ****
--- 31,41 ----
  import sun.jvm.hotspot.types.Type;
  import sun.jvm.hotspot.types.TypeDataBase;
  
  class ZGlobalsForVMStructs extends VMObject {
      private static AddressField ZGlobalPhaseField;
+     private static AddressField ZGlobalSeqNumField;
      private static AddressField ZAddressGoodMaskField;
      private static AddressField ZAddressBadMaskField;
      private static AddressField ZAddressWeakBadMaskField;
      private static AddressField ZObjectAlignmentSmallShiftField;
      private static AddressField ZObjectAlignmentSmallField;
*** 45,54 ****
--- 46,56 ----
  
      static private synchronized void initialize(TypeDataBase db) {
          Type type = db.lookupType("ZGlobalsForVMStructs");
  
          ZGlobalPhaseField = type.getAddressField("_ZGlobalPhase");
+         ZGlobalSeqNumField = type.getAddressField("_ZGlobalSeqNum");
          ZAddressGoodMaskField = type.getAddressField("_ZAddressGoodMask");
          ZAddressBadMaskField = type.getAddressField("_ZAddressBadMask");
          ZAddressWeakBadMaskField = type.getAddressField("_ZAddressWeakBadMask");
          ZObjectAlignmentSmallShiftField = type.getAddressField("_ZObjectAlignmentSmallShift");
          ZObjectAlignmentSmallField = type.getAddressField("_ZObjectAlignmentSmall");
*** 60,69 ****
--- 62,75 ----
  
      int ZGlobalPhase() {
          return ZGlobalPhaseField.getValue(addr).getJIntAt(0);
      }
  
+     int ZGlobalSeqNum() {
+         return ZGlobalSeqNumField.getValue(addr).getJIntAt(0);
+     }
+ 
      long ZAddressGoodMask() {
          return ZAddressGoodMaskField.getValue(addr).getJLongAt(0);
      }
  
      long ZAddressBadMask() {