| /* |
| * Copyright (c) 2000, 2012, 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.memory; |
| |
| import java.io.*; |
| import java.util.*; |
| |
| import sun.jvm.hotspot.debugger.*; |
| import sun.jvm.hotspot.gc_interface.*; |
| import sun.jvm.hotspot.runtime.*; |
| import sun.jvm.hotspot.types.*; |
| import sun.jvm.hotspot.utilities.*; |
| |
| public class GenCollectedHeap extends SharedHeap { |
| private static CIntegerField nGensField; |
| private static long gensOffset; |
| private static AddressField genSpecsField; |
| |
| private static GenerationFactory genFactory; |
| |
| static { |
| VM.registerVMInitializedObserver(new Observer() { |
| public void update(Observable o, Object data) { |
| initialize(VM.getVM().getTypeDataBase()); |
| } |
| }); |
| } |
| |
| private static synchronized void initialize(TypeDataBase db) { |
| Type type = db.lookupType("GenCollectedHeap"); |
| |
| nGensField = type.getCIntegerField("_n_gens"); |
| gensOffset = type.getField("_gens").getOffset(); |
| genSpecsField = type.getAddressField("_gen_specs"); |
| |
| genFactory = new GenerationFactory(); |
| } |
| |
| public GenCollectedHeap(Address addr) { |
| super(addr); |
| } |
| |
| public int nGens() { |
| return (int) nGensField.getValue(addr); |
| } |
| |
| public Generation getGen(int i) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that((i >= 0) && (i < nGens()), "Index " + i + |
| " out of range (should be between 0 and " + nGens() + ")"); |
| } |
| |
| if ((i < 0) || (i >= nGens())) { |
| return null; |
| } |
| |
| Address genAddr = addr.getAddressAt(gensOffset + |
| (i * VM.getVM().getAddressSize())); |
| return genFactory.newObject(addr.getAddressAt(gensOffset + |
| (i * VM.getVM().getAddressSize()))); |
| } |
| |
| public boolean isIn(Address a) { |
| for (int i = 0; i < nGens(); i++) { |
| Generation gen = getGen(i); |
| if (gen.isIn(a)) { |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| public long capacity() { |
| long capacity = 0; |
| for (int i = 0; i < nGens(); i++) { |
| capacity += getGen(i).capacity(); |
| } |
| return capacity; |
| } |
| |
| public long used() { |
| long used = 0; |
| for (int i = 0; i < nGens(); i++) { |
| used += getGen(i).used(); |
| } |
| return used; |
| } |
| |
| /** Package-private access to GenerationSpecs */ |
| GenerationSpec spec(int level) { |
| if (Assert.ASSERTS_ENABLED) { |
| Assert.that((level >= 0) && (level < nGens()), "Index " + level + |
| " out of range (should be between 0 and " + nGens() + ")"); |
| } |
| |
| if ((level < 0) || (level >= nGens())) { |
| return null; |
| } |
| |
| Address ptrList = genSpecsField.getValue(addr); |
| if (ptrList == null) { |
| return null; |
| } |
| return (GenerationSpec) |
| VMObjectFactory.newObject(GenerationSpec.class, |
| ptrList.getAddressAt(level * VM.getVM().getAddressSize())); |
| } |
| |
| public CollectedHeapName kind() { |
| return CollectedHeapName.GEN_COLLECTED_HEAP; |
| } |
| |
| public void printOn(PrintStream tty) { |
| for (int i = 0; i < nGens(); i++) { |
| tty.print("Gen " + i + ": "); |
| getGen(i).printOn(tty); |
| tty.println("Invocations: " + getGen(i).invocations()); |
| tty.println(); |
| } |
| } |
| } |