--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/gc/z/ZVirtualMemory.java Tue Jun 12 17:40:28 2018 +0200
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+package sun.jvm.hotspot.gc.z;
+
+import sun.jvm.hotspot.debugger.Address;
+import sun.jvm.hotspot.runtime.VM;
+import sun.jvm.hotspot.runtime.VMObject;
+import sun.jvm.hotspot.types.CIntegerField;
+import sun.jvm.hotspot.types.Type;
+import sun.jvm.hotspot.types.TypeDataBase;
+
+public class ZVirtualMemory extends VMObject {
+ private static CIntegerField startField;
+ private static CIntegerField endField;
+
+ static {
+ VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase()));
+ }
+
+ static private synchronized void initialize(TypeDataBase db) {
+ Type type = db.lookupType("ZVirtualMemory");
+
+ startField = type.getCIntegerField("_start");
+ endField = type.getCIntegerField("_end");
+ }
+
+ public ZVirtualMemory(Address addr) {
+ super(addr);
+ }
+
+ long start() {
+ return startField.getJLong(addr);
+ }
+
+ long end() {
+ return endField.getJLong(addr);
+ }
+}