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1 /*
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2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.tools.soql;
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26
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27 import java.io.*;
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28 import java.util.*;
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29 import sun.jvm.hotspot.debugger.*;
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30 import sun.jvm.hotspot.oops.*;
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31 import sun.jvm.hotspot.runtime.*;
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32 import sun.jvm.hotspot.tools.*;
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33 import sun.jvm.hotspot.utilities.*;
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34 import sun.jvm.hotspot.utilities.soql.*;
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35
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36 /**
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37 This is command line SOQL (Simple Object Query Language) interpreter.
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38 */
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39
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40 public class SOQL extends Tool {
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41 public static void main(String[] args) {
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42 SOQL soql = new SOQL();
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43 soql.start(args);
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44 soql.stop();
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45 }
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46
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47 protected SOQLEngine soqlEngine;
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48 protected BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
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49 protected PrintStream out = System.out;
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50 static protected String prompt = "soql> ";
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51 static protected String secondPrompt = "> ";
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52
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53 public void run() {
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54 soqlEngine = SOQLEngine.getEngine();
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55 while (true) {
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56 try {
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57 out.print(prompt);
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58 String line = in.readLine();
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59 if (line == null) {
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60 return;
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61 }
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62 StringTokenizer st = new StringTokenizer(line);
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63 if (st.hasMoreTokens()) {
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64 String cmd = st.nextToken();
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65 if (cmd.equals("select")) {
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66 handleSelect(line);
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67 } else if (cmd.equals("classes")) {
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68 handleClasses(line);
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69 } else if (cmd.equals("class")) {
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70 handleClass(line);
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71 } else if (cmd.equals("object")) {
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72 handleObject(line);
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73 } else if (cmd.equals("quit")) {
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74 out.println("Bye!");
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75 return;
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76 } else if (cmd.equals("")) {
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77 // do nothing ...
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78 } else {
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79 handleUnknown(line);
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80 }
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81 }
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82 } catch (IOException e) {
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83 e.printStackTrace();
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84 return;
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85 }
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86 }
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87 }
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88
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89 protected void handleSelect(String query) {
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90 StringBuffer buf = new StringBuffer(query);
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91 String tmp = null;
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92 while (true) {
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93 out.print(secondPrompt);
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94 try {
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95 tmp = in.readLine();
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96 } catch (IOException ioe) {
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97 break;
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98 }
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99 if (tmp.equals("") || tmp.equals("go"))
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100 break;
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101 buf.append('\n');
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102 buf.append(tmp);
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103 }
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104 query = buf.toString();
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105
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106 try {
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107 soqlEngine.executeQuery(query,
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108 new ObjectVisitor() {
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109 public void visit(Object o) {
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110 if (o != null && o instanceof JSJavaObject) {
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111 String oopAddr = ((JSJavaObject)o).getOop().getHandle().toString();
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112 out.println(oopAddr);
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113 } else {
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114 out.println((o == null)? "null" : o.toString());
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115 }
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116 }
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117 });
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118 } catch (SOQLException se) {
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119 se.printStackTrace();
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120 }
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121 }
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122
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123 protected void handleClasses(String line) {
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124 // just list all InstanceKlasses
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125 InstanceKlass[] klasses = SystemDictionaryHelper.getAllInstanceKlasses();
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126 for (int i = 0; i < klasses.length; i++) {
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127 out.print(klasses[i].getName().asString().replace('/', '.'));
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128 out.print(" @");
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129 out.println(klasses[i].getHandle());
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130 }
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131 }
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132
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133 protected void handleClass(String line) {
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134 StringTokenizer st = new StringTokenizer(line);
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135 st.nextToken(); // ignore "class"
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136 if (st.hasMoreTokens()) {
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137 String className = st.nextToken();
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138 InstanceKlass klass = SystemDictionaryHelper.findInstanceKlass(className);
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139 if (klass == null) {
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140 out.println("class " + className + " not found");
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141 } else {
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142 // klass.iterate(new OopPrinter(out), true);
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143
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144 // base class
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145 InstanceKlass base = (InstanceKlass) klass.getSuper();
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146 if (base != null) {
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147 out.println("super");
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148 out.print("\t");
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149 out.println(base.getName().asString().replace('/', '.'));
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150 }
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151
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152 // list immediate fields only
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153 TypeArray fields = klass.getFields();
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154 int numFields = (int) fields.getLength();
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155 ConstantPool cp = klass.getConstants();
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156 out.println("fields");
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157 if (numFields != 0) {
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158 for (int f = 0; f < numFields; f += InstanceKlass.NEXT_OFFSET) {
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159 int nameIndex = fields.getShortAt(f + InstanceKlass.NAME_INDEX_OFFSET);
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160 int sigIndex = fields.getShortAt(f + InstanceKlass.SIGNATURE_INDEX_OFFSET);
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161 Symbol f_name = cp.getSymbolAt(nameIndex);
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162 Symbol f_sig = cp.getSymbolAt(sigIndex);
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163 StringBuffer sigBuf = new StringBuffer();
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164 new SignatureConverter(f_sig, sigBuf).dispatchField();
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165 out.print('\t');
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166 out.print(sigBuf.toString().replace('/', '.'));
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167 out.print(' ');
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168 out.println(f_name.asString());
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169 }
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170 } else {
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171 out.println("\tno fields in this class");
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172 }
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173 }
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174 } else {
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175 out.println("usage: class <name of the class>");
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176 }
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177 }
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178
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179 protected Oop getOopAtAddress(Address addr) {
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180 OopHandle oopHandle = addr.addOffsetToAsOopHandle(0);
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181 return VM.getVM().getObjectHeap().newOop(oopHandle);
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182 }
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183
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184 protected void handleObject(String line) {
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185 StringTokenizer st = new StringTokenizer(line);
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186 st.nextToken(); // ignore "object"
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187 if (st.hasMoreTokens()) {
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188 String addrStr = st.nextToken();
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189 Address addr = null;
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190 Debugger dbg = VM.getVM().getDebugger();
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191 try {
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192 addr = dbg.parseAddress(addrStr);
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193 } catch (Exception e) {
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194 out.println("invalid address : " + e.getMessage());
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195 return;
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196 }
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197
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198 Oop oop = null;
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199 try {
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200 oop = getOopAtAddress(addr);
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201 } catch (Exception e) {
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202 out.println("invalid object : " + e.getMessage());
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203 }
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204
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205 if (oop != null) {
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206 oop.iterate(new OopPrinter(out), true);
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207 } else {
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208 out.println("null object!");
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209 }
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210 } else {
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211 out.println("usage: object <address>");
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212 }
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213 }
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214
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215 protected void handleUnknown(String line) {
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216 out.println("Unknown command!");
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217 }
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218 }
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