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view agent/src/share/classes/sun/jvm/hotspot/tools/soql/SOQL.java @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c18cbe5936b8 |
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/* * Copyright 2003-2007 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.tools.soql; import java.io.*; import java.util.*; import sun.jvm.hotspot.debugger.*; import sun.jvm.hotspot.oops.*; import sun.jvm.hotspot.runtime.*; import sun.jvm.hotspot.tools.*; import sun.jvm.hotspot.utilities.*; import sun.jvm.hotspot.utilities.soql.*; /** This is command line SOQL (Simple Object Query Language) interpreter. */ public class SOQL extends Tool { public static void main(String[] args) { SOQL soql = new SOQL(); soql.start(args); soql.stop(); } protected SOQLEngine soqlEngine; protected BufferedReader in = new BufferedReader(new InputStreamReader(System.in)); protected PrintStream out = System.out; static protected String prompt = "soql> "; static protected String secondPrompt = "> "; public void run() { soqlEngine = SOQLEngine.getEngine(); while (true) { try { out.print(prompt); String line = in.readLine(); if (line == null) { return; } StringTokenizer st = new StringTokenizer(line); if (st.hasMoreTokens()) { String cmd = st.nextToken(); if (cmd.equals("select")) { handleSelect(line); } else if (cmd.equals("classes")) { handleClasses(line); } else if (cmd.equals("class")) { handleClass(line); } else if (cmd.equals("object")) { handleObject(line); } else if (cmd.equals("quit")) { out.println("Bye!"); return; } else if (cmd.equals("")) { // do nothing ... } else { handleUnknown(line); } } } catch (IOException e) { e.printStackTrace(); return; } } } protected void handleSelect(String query) { StringBuffer buf = new StringBuffer(query); String tmp = null; while (true) { out.print(secondPrompt); try { tmp = in.readLine(); } catch (IOException ioe) { break; } if (tmp.equals("") || tmp.equals("go")) break; buf.append('\n'); buf.append(tmp); } query = buf.toString(); try { soqlEngine.executeQuery(query, new ObjectVisitor() { public void visit(Object o) { if (o != null && o instanceof JSJavaObject) { String oopAddr = ((JSJavaObject)o).getOop().getHandle().toString(); out.println(oopAddr); } else { out.println((o == null)? "null" : o.toString()); } } }); } catch (SOQLException se) { se.printStackTrace(); } } protected void handleClasses(String line) { // just list all InstanceKlasses InstanceKlass[] klasses = SystemDictionaryHelper.getAllInstanceKlasses(); for (int i = 0; i < klasses.length; i++) { out.print(klasses[i].getName().asString().replace('/', '.')); out.print(" @"); out.println(klasses[i].getHandle()); } } protected void handleClass(String line) { StringTokenizer st = new StringTokenizer(line); st.nextToken(); // ignore "class" if (st.hasMoreTokens()) { String className = st.nextToken(); InstanceKlass klass = SystemDictionaryHelper.findInstanceKlass(className); if (klass == null) { out.println("class " + className + " not found"); } else { // klass.iterate(new OopPrinter(out), true); // base class InstanceKlass base = (InstanceKlass) klass.getSuper(); if (base != null) { out.println("super"); out.print("\t"); out.println(base.getName().asString().replace('/', '.')); } // list immediate fields only TypeArray fields = klass.getFields(); int numFields = (int) fields.getLength(); ConstantPool cp = klass.getConstants(); out.println("fields"); if (numFields != 0) { for (int f = 0; f < numFields; f += InstanceKlass.NEXT_OFFSET) { int nameIndex = fields.getShortAt(f + InstanceKlass.NAME_INDEX_OFFSET); int sigIndex = fields.getShortAt(f + InstanceKlass.SIGNATURE_INDEX_OFFSET); Symbol f_name = cp.getSymbolAt(nameIndex); Symbol f_sig = cp.getSymbolAt(sigIndex); StringBuffer sigBuf = new StringBuffer(); new SignatureConverter(f_sig, sigBuf).dispatchField(); out.print('\t'); out.print(sigBuf.toString().replace('/', '.')); out.print(' '); out.println(f_name.asString()); } } else { out.println("\tno fields in this class"); } } } else { out.println("usage: class <name of the class>"); } } protected Oop getOopAtAddress(Address addr) { OopHandle oopHandle = addr.addOffsetToAsOopHandle(0); return VM.getVM().getObjectHeap().newOop(oopHandle); } protected void handleObject(String line) { StringTokenizer st = new StringTokenizer(line); st.nextToken(); // ignore "object" if (st.hasMoreTokens()) { String addrStr = st.nextToken(); Address addr = null; Debugger dbg = VM.getVM().getDebugger(); try { addr = dbg.parseAddress(addrStr); } catch (Exception e) { out.println("invalid address : " + e.getMessage()); return; } Oop oop = null; try { oop = getOopAtAddress(addr); } catch (Exception e) { out.println("invalid object : " + e.getMessage()); } if (oop != null) { oop.iterate(new OopPrinter(out), true); } else { out.println("null object!"); } } else { out.println("usage: object <address>"); } } protected void handleUnknown(String line) { out.println("Unknown command!"); } }