Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/memory/GenCollectedHeap.java @ 4626:ee91624e54e6
Fix checkcast type in polymorphic inlining
author | Gilles Duboscq <duboscq@ssw.jku.at> |
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date | Fri, 17 Feb 2012 12:37:17 +0100 |
parents | c18cbe5936b8 |
children | da91efe96a93 |
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/* * Copyright (c) 2000, 2003, 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 permGen().isIn(a); } 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(); } permGen().printOn(tty); tty.println("Invocations: " + permGen().invocations()); } }