1 /* 2 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 package sun.jvm.hotspot.gc.z; 26 27 import sun.jvm.hotspot.runtime.VM; 28 import sun.jvm.hotspot.runtime.VMObjectFactory; 29 import sun.jvm.hotspot.types.Field; 30 import sun.jvm.hotspot.types.Type; 31 import sun.jvm.hotspot.types.TypeDataBase; 32 33 public class ZGlobals { 34 private static Field instanceField; 35 36 static { 37 VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase())); 38 } 39 40 static private synchronized void initialize(TypeDataBase db) { 41 Type type = db.lookupType("ZGlobalsForVMStructs"); 42 43 instanceField = type.getField("_instance_p"); 44 } 45 46 private static ZGlobalsForVMStructs instance() { 47 return (ZGlobalsForVMStructs)VMObjectFactory.newObject(ZGlobalsForVMStructs.class, instanceField.getAddress()); 48 } 49 50 public static int ZGlobalPhase() { 51 return instance().ZGlobalPhase(); 52 } 53 54 public static long ZAddressGoodMask() { 55 return instance().ZAddressGoodMask(); 56 } 57 58 public static long ZAddressBadMask() { 59 return instance().ZAddressBadMask(); 60 } 61 62 public static long ZAddressWeakBadMask() { 63 return instance().ZAddressWeakBadMask(); 64 } 65 };