Mercurial > hg > truffle
diff agent/src/share/classes/sun/jvm/hotspot/oops/TypeArrayKlass.java @ 0:a61af66fc99e jdk7-b24
Initial load
author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
parents | |
children | c18cbe5936b8 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/agent/src/share/classes/sun/jvm/hotspot/oops/TypeArrayKlass.java Sat Dec 01 00:00:00 2007 +0000 @@ -0,0 +1,129 @@ +/* + * 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)); + } +}