Mercurial > hg > graal-compiler
view agent/src/share/classes/sun/jvm/hotspot/gc_implementation/parallelScavenge/ParallelScavengeHeap.java @ 132:60b728ec77c1
6652736: well known classes in system dictionary are inefficiently processed
Summary: combine many scalar variables into a single enum-indexed array in SystemDictionary.
Reviewed-by: kvn
author | jrose |
---|---|
date | Tue, 29 Apr 2008 19:45:22 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2003 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, * CA 95054 USA or visit www.sun.com if you need additional information or * have any questions. * */ package sun.jvm.hotspot.gc_implementation.parallelScavenge; 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.*; public class ParallelScavengeHeap extends CollectedHeap { 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("ParallelScavengeHeap"); youngGenField = type.getAddressField("_young_gen"); oldGenField = type.getAddressField("_old_gen"); permGenField = type.getAddressField("_perm_gen"); } public ParallelScavengeHeap(Address addr) { super(addr); } // Fields private static AddressField youngGenField; private static AddressField oldGenField; private static AddressField permGenField; // Accessors public PSYoungGen youngGen() { return (PSYoungGen) VMObjectFactory.newObject(PSYoungGen.class, youngGenField.getValue()); } public PSOldGen oldGen() { return (PSOldGen) VMObjectFactory.newObject(PSOldGen.class, oldGenField.getValue()); } public PSPermGen permGen() { return (PSPermGen) VMObjectFactory.newObject(PSPermGen.class, permGenField.getValue()); } public long capacity() { return youngGen().capacity() + oldGen().capacity(); } public long used() { return youngGen().used() + oldGen().used(); } public boolean isIn(Address a) { if (youngGen().isIn(a)) { return true; } if (oldGen().isIn(a)) { return true; } if (permGen().isIn(a)) { return true; } return false; } public CollectedHeapName kind() { return CollectedHeapName.PARALLEL_SCAVENGE_HEAP; } public void printOn(PrintStream tty) { tty.print("ParallelScavengeHeap [ "); youngGen().printOn(tty); oldGen().printOn(tty); permGen().printOn(tty); tty.print(" ] "); } }