1 /* 2 * Copyright (c) 2018, 2021, 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.debugger.Address; 28 import sun.jvm.hotspot.runtime.VM; 29 import sun.jvm.hotspot.runtime.VMObject; 30 import sun.jvm.hotspot.types.AddressField; 31 import sun.jvm.hotspot.types.Type; 32 import sun.jvm.hotspot.types.TypeDataBase; 33 34 class ZGlobalsForVMStructs extends VMObject { 35 private static AddressField ZGlobalPhaseField; 36 private static AddressField ZGlobalSeqNumField; 37 private static AddressField ZAddressOffsetMaskField; 38 private static AddressField ZAddressMetadataMaskField; 39 private static AddressField ZAddressMetadataFinalizableField; 40 private static AddressField ZAddressGoodMaskField; 41 private static AddressField ZAddressBadMaskField; 42 private static AddressField ZAddressWeakBadMaskField; 43 private static AddressField ZObjectAlignmentSmallShiftField; 44 private static AddressField ZObjectAlignmentSmallField; 45 46 static { VM.registerVMInitializedObserver(o, d) -> initialize(VM.getVM().getTypeDataBase())47 VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase())); 48 } 49 initialize(TypeDataBase db)50 static private synchronized void initialize(TypeDataBase db) { 51 Type type = db.lookupType("ZGlobalsForVMStructs"); 52 53 ZGlobalPhaseField = type.getAddressField("_ZGlobalPhase"); 54 ZGlobalSeqNumField = type.getAddressField("_ZGlobalSeqNum"); 55 ZAddressOffsetMaskField = type.getAddressField("_ZAddressOffsetMask"); 56 ZAddressMetadataMaskField = type.getAddressField("_ZAddressMetadataMask"); 57 ZAddressMetadataFinalizableField = type.getAddressField("_ZAddressMetadataFinalizable"); 58 ZAddressGoodMaskField = type.getAddressField("_ZAddressGoodMask"); 59 ZAddressBadMaskField = type.getAddressField("_ZAddressBadMask"); 60 ZAddressWeakBadMaskField = type.getAddressField("_ZAddressWeakBadMask"); 61 ZObjectAlignmentSmallShiftField = type.getAddressField("_ZObjectAlignmentSmallShift"); 62 ZObjectAlignmentSmallField = type.getAddressField("_ZObjectAlignmentSmall"); 63 } 64 ZGlobalsForVMStructs(Address addr)65 ZGlobalsForVMStructs(Address addr) { 66 super(addr); 67 } 68 ZGlobalPhase()69 int ZGlobalPhase() { 70 return ZGlobalPhaseField.getValue(addr).getJIntAt(0); 71 } 72 ZGlobalSeqNum()73 int ZGlobalSeqNum() { 74 return ZGlobalSeqNumField.getValue(addr).getJIntAt(0); 75 } 76 ZAddressOffsetMask()77 long ZAddressOffsetMask() { 78 return ZAddressOffsetMaskField.getValue(addr).getJLongAt(0); 79 } 80 ZAddressMetadataMask()81 long ZAddressMetadataMask() { 82 return ZAddressMetadataMaskField.getValue(addr).getJLongAt(0); 83 } 84 ZAddressMetadataFinalizable()85 long ZAddressMetadataFinalizable() { 86 return ZAddressMetadataFinalizableField.getValue(addr).getJLongAt(0); 87 } 88 ZAddressGoodMask()89 long ZAddressGoodMask() { 90 return ZAddressGoodMaskField.getValue(addr).getJLongAt(0); 91 } 92 ZAddressBadMask()93 long ZAddressBadMask() { 94 return ZAddressBadMaskField.getValue(addr).getJLongAt(0); 95 } 96 ZAddressWeakBadMask()97 long ZAddressWeakBadMask() { 98 return ZAddressWeakBadMaskField.getValue(addr).getJLongAt(0); 99 } 100 ZObjectAlignmentSmallShift()101 int ZObjectAlignmentSmallShift() { 102 return ZObjectAlignmentSmallShiftField.getValue(addr).getJIntAt(0); 103 } 104 ZObjectAlignmentSmall()105 int ZObjectAlignmentSmall() { 106 return ZObjectAlignmentSmallField.getValue(addr).getJIntAt(0); 107 } 108 } 109