1 /* 2 * Copyright (c) 2017, 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 java.io.PrintStream; 28 29 import sun.jvm.hotspot.debugger.Address; 30 import sun.jvm.hotspot.gc.shared.CollectedHeap; 31 import sun.jvm.hotspot.gc.shared.CollectedHeapName; 32 import sun.jvm.hotspot.runtime.VM; 33 import sun.jvm.hotspot.runtime.VMObjectFactory; 34 import sun.jvm.hotspot.types.Type; 35 import sun.jvm.hotspot.types.TypeDataBase; 36 37 // Mirror class for ZCollectedHeap. 38 39 public class ZCollectedHeap extends CollectedHeap { 40 41 private static long zHeapFieldOffset; 42 43 static { 44 VM.registerVMInitializedObserver((o, d) -> initialize(VM.getVM().getTypeDataBase())); 45 } 46 47 private static synchronized void initialize(TypeDataBase db) { 48 Type type = db.lookupType("ZCollectedHeap"); 49 50 zHeapFieldOffset = type.getAddressField("_heap").getOffset(); 51 } 52 53 public ZHeap heap() { 54 Address heapAddr = addr.addOffsetTo(zHeapFieldOffset); 55 return (ZHeap)VMObjectFactory.newObject(ZHeap.class, heapAddr); 56 } 57 58 @Override 59 public CollectedHeapName kind() { 60 return CollectedHeapName.Z_COLLECTED_HEAP; 61 } 62 63 @Override 64 public void printOn(PrintStream tty) { 65 heap().printOn(tty); 66 } 67 68 public ZCollectedHeap(Address addr) { 69 super(addr); 70 } 71 }