Mercurial > hg > truffle
view agent/src/share/classes/sun/jvm/hotspot/interpreter/InterpreterCodelet.java @ 19491:4d66c000d253
Truffle/Instrumentation: more cleanup in Probe
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Wed, 18 Feb 2015 18:30:49 -0800 |
parents | c18cbe5936b8 |
children |
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/* * Copyright (c) 2000, 2004, 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.interpreter; import java.io.*; import java.util.*; import sun.jvm.hotspot.code.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.types.*; import sun.jvm.hotspot.utilities.*; /** An InterpreterCodelet is a piece of interpreter code. All interpreter code is generated into little codelets which contain extra information for debugging and printing purposes. */ public class InterpreterCodelet extends Stub { private static long instanceSize; private static CIntegerField sizeField; // the size in bytes private static AddressField descriptionField; // a description of the codelet, for debugging & printing private static CIntegerField bytecodeField; // associated bytecode if any 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("InterpreterCodelet"); sizeField = type.getCIntegerField("_size"); descriptionField = type.getAddressField("_description"); bytecodeField = type.getCIntegerField("_bytecode"); instanceSize = type.getSize(); } public InterpreterCodelet(Address addr) { super(addr); } public long getSize() { return sizeField.getValue(addr); } public Address codeBegin() { return addr.addOffsetTo(instanceSize); } public Address codeEnd() { return addr.addOffsetTo(getSize()); } public long codeSize() { return codeEnd().minus(codeBegin()); } public String getDescription() { return CStringUtilities.getString(descriptionField.getValue(addr)); } public void verify() { } public void printOn(PrintStream tty) { String desc = getDescription(); if (desc != null) { tty.print(desc); } // FIXME: add printing of bytecode tty.println(" [" + codeBegin() + ", " + codeEnd() + ") " + codeSize() + " bytes "); // FIXME: add disassembly } }