Mercurial > hg > blitz_condensed
view src/com/go/trove/classfile/TestClassFileRead.java @ 34:6f68e94c1fb8 default tip
Add CondensedStats monitoring utility, equivalent to vmstat
author | Dominic Cleal <dominic-cleal@cdo2.com> |
---|---|
date | Thu, 05 Aug 2010 11:07:25 +0100 |
parents | 3dc0c5604566 |
children |
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/* ==================================================================== * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group * ==================================================================== * The Tea Software License, Version 1.1 * * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Walt Disney Internet Group (http://opensource.go.com/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact opensource@dig.com. * * 5. Products derived from this software may not be called "Tea", * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior * written permission of the Walt Disney Internet Group. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * For more information about Tea, please see http://opensource.go.com/. */ package com.go.trove.classfile; import java.io.*; /****************************************************************************** * Reads a class file and prints out its contents. * * @author Brian S O'Neill * @version * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/12/27 <!-- $--> */ public class TestClassFileRead { /** * @param args first argument is path to class file. */ public static void main(String[] args) throws Exception { InputStream in = new FileInputStream(args[0]); in = new BufferedInputStream(in); ClassFileDataLoader loader = new ResourceClassFileDataLoader(); ClassFile cf = ClassFile.readFrom(in, loader, null); in.close(); while (cf.getOuterClass() != null) { cf = cf.getOuterClass(); } dump(cf); } private static void dump(ClassFile cf) { dump(cf, ""); } private static void dump(ClassFile cf, String indent) { println(cf, indent); println("className: " + cf.getClassName(), indent); println("superClassName: " + cf.getSuperClassName(), indent); println("innerClass: " + cf.isInnerClass(), indent); println("innerClassName: " + cf.getInnerClassName(), indent); println("type: " + cf.getType(), indent); println("accessFlags: " + cf.getAccessFlags(), indent); String[] interfaces = cf.getInterfaces(); print("interfaces: ", indent); for (int i=0; i<interfaces.length; i++) { if (i > 0) { System.out.print(", "); } System.out.print(interfaces[i]); } println(); FieldInfo[] fields = cf.getFields(); println("fields: ", indent); for (int i=0; i<fields.length; i++) { dump(fields[i], indent + " "); } MethodInfo[] methods = cf.getMethods(); println("methods: ", indent); for (int i=0; i<methods.length; i++) { dump(methods[i], indent + " "); } methods = cf.getConstructors(); println("constructors: ", indent); for (int i=0; i<methods.length; i++) { dump(methods[i], indent + " "); } MethodInfo init = cf.getInitializer(); println("initializer: ", indent); if (init != null) { dump(init, indent + " "); } ClassFile[] innerClasses = cf.getInnerClasses(); println("innerClasses: ", indent); for (int i=0; i<innerClasses.length; i++) { dump(innerClasses[i], indent + " "); } println("sourceFile: " + cf.getSourceFile(), indent); println("synthetic: " + cf.isSynthetic(), indent); println("deprecated: " + cf.isDeprecated(), indent); println("attributes: ", indent); dump(cf.getAttributes(), indent + " "); println(); } private static void dump(FieldInfo field, String indent) { println(field, indent); println("name: " + field.getName(), indent); println("type: " + field.getType(), indent); println("accessFlags: " + field.getAccessFlags(), indent); println("constantValue: " + field.getConstantValue(), indent); println("synthetic: " + field.isSynthetic(), indent); println("deprecated: " + field.isDeprecated(), indent); println("attributes: ", indent); dump(field.getAttributes(), indent + " "); println(); } private static void dump(MethodInfo method, String indent) { println(method, indent); println("name: " + method.getName(), indent); println("methodDescriptor: " + method.getMethodDescriptor(), indent); println("accessFlags: " + method.getAccessFlags(), indent); String[] exceptions = method.getExceptions(); print("exceptions: ", indent); for (int i=0; i<exceptions.length; i++) { if (i > 0) { System.out.print(", "); } System.out.print(exceptions[i]); } println(); if (method.getCodeAttr() != null) { println("code:", indent); PrintWriter writer = new PrintWriter(System.out); TypeDescriptor[] paramTypes = method.getMethodDescriptor().getParameterTypes(); boolean isStatic = method.getAccessFlags().isStatic(); new CodeDisassembler(method).disassemble (new CodeAssemblerPrinter(paramTypes, isStatic, writer, indent + " ", null)); writer.flush(); } println("synthetic: " + method.isSynthetic(), indent); println("deprecated: " + method.isDeprecated(), indent); println("attributes: ", indent); dump(method.getAttributes(), indent + " "); println(); } private static void dump(Attribute[] attributes, String indent) { if (attributes == null) { return; } for (int i=0; i<attributes.length; i++) { Attribute attribute = attributes[i]; println(attribute, indent); Attribute[] subAttributes = attribute.getAttributes(); if (subAttributes != null && subAttributes.length > 0) { println("attributes: ", indent); dump(subAttributes, indent + " "); } } } private static void print(Object obj, String indent) { System.out.print(indent); System.out.print(obj); } private static void println(Object obj, String indent) { print(obj, indent); println(); } private static void println() { System.out.println(); } }