Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/oops/TypeArrayKlass.java @ 210:05712c37c828
6676016: ParallelOldGC leaks memory
Summary: ensure that GCTask threads release resource and handle memory
Reviewed-by: jmasa, chrisphi
author | jcoomes |
---|---|
date | Wed, 18 Jun 2008 18:36:47 -0700 |
parents | a61af66fc99e |
children | c18cbe5936b8 |
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/* * Copyright 2000-2007 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.oops; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.utilities.*; // TypeArrayKlass is a proxy for typeArrayKlass in the JVM public class TypeArrayKlass extends ArrayKlass { static { VM.registerVMInitializedObserver(new Observer() { public void update(Observable o, Object data) { initialize(VM.getVM().getTypeDataBase()); } }); } private static synchronized void initialize(TypeDataBase db) throws WrongTypeException { Type t = db.lookupType("typeArrayKlass"); maxLength = new CIntField(t.getCIntegerField("_max_length"), Oop.getHeaderSize()); } TypeArrayKlass(OopHandle handle, ObjectHeap heap) { super(handle, heap); } private static CIntField maxLength; public long getMaxLength() { return maxLength.getValue(this); } public static final int T_BOOLEAN = 4; public static final int T_CHAR = 5; public static final int T_FLOAT = 6; public static final int T_DOUBLE = 7; public static final int T_BYTE = 8; public static final int T_SHORT = 9; public static final int T_INT = 10; public static final int T_LONG = 11; public String getTypeName() { switch ((int) getElementType()) { case T_BOOLEAN: return "[Z"; case T_CHAR: return "[C"; case T_FLOAT: return "[F"; case T_DOUBLE: return "[D"; case T_BYTE: return "[B"; case T_SHORT: return "[S"; case T_INT: return "[I"; case T_LONG: return "[J"; } return "Unknown TypeArray"; } public String getElementTypeName() { switch ((int) getElementType()) { case T_BOOLEAN: return "boolean"; case T_CHAR: return "char"; case T_FLOAT: return "float"; case T_DOUBLE: return "double"; case T_BYTE: return "byte"; case T_SHORT: return "short"; case T_INT: return "int"; case T_LONG: return "long"; } throw new RuntimeException("should not reach here"); } public void printValueOn(PrintStream tty) { tty.print("TypeArrayKlass for " + getTypeName()); } public void iterateFields(OopVisitor visitor, boolean doVMFields) { super.iterateFields(visitor, doVMFields); if (doVMFields) { visitor.doCInt(maxLength, true); } } public Klass arrayKlassImpl(boolean orNull, int n) { int dimension = (int) getDimension(); if (Assert.ASSERTS_ENABLED) { Assert.that(dimension <= n, "check order of chain"); } if (dimension == n) return this; ObjArrayKlass ak = (ObjArrayKlass) getHigherDimension(); if (ak == null) { if (orNull) return null; // FIXME: would need to change in reflective system to actually // allocate klass throw new RuntimeException("Can not allocate array klasses in debugging system"); } if (orNull) { return ak.arrayKlassOrNull(n); } return ak.arrayKlass(n); } public Klass arrayKlassImpl(boolean orNull) { return arrayKlassImpl(orNull, (int) (getDimension() + 1)); } }