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1 /*
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2 * Copyright 2004-2007 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.utilities.soql;
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26
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27 import java.util.*;
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28 import sun.jvm.hotspot.debugger.*;
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29 import sun.jvm.hotspot.oops.*;
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30 import sun.jvm.hotspot.runtime.*;
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31
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32 public class JSJavaVM extends DefaultScriptObject {
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33 private static final int FIELD_ADDRESS_SIZE = 0;
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34 private static final int FIELD_BUILD_INFO = 1;
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35 private static final int FIELD_CPU = 2;
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36 private static final int FIELD_FLAGS = 3;
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37 private static final int FIELD_HEAP = 4;
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38 private static final int FIELD_OS = 5;
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39 private static final int FIELD_SYS_PROPS = 6;
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40 private static final int FIELD_THREADS = 7;
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41 private static final int FIELD_TYPE = 8;
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42 private static final int FIELD_VERSION = 9;
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43 private static final int FIELD_CLASS_PATH = 10;
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44 private static final int FIELD_BOOT_CLASS_PATH = 11;
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45 private static final int FIELD_USER_DIR = 12;
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46 private static final int FIELD_UNDEFINED = -1;
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47
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48 public JSJavaVM(JSJavaFactory factory) {
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49 this.factory = factory;
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50 this.vm = VM.getVM();
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51 }
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52
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53 public Object get(String name) {
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54 int fieldID = getFieldID(name);
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55 switch (fieldID) {
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56 case FIELD_ADDRESS_SIZE:
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57 return new Long(getVMBit());
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58 case FIELD_BUILD_INFO:
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59 return vm.getVMInternalInfo();
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60 case FIELD_CPU:
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61 return vm.getCPU();
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62 case FIELD_FLAGS:
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63 return getFlags();
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64 case FIELD_HEAP:
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65 return getHeap();
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66 case FIELD_OS:
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67 return vm.getOS();
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68 case FIELD_SYS_PROPS:
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69 return getSysProps();
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70 case FIELD_THREADS:
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71 return getThreads();
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72 case FIELD_TYPE:
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73 return getType();
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74 case FIELD_VERSION:
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75 return vm.getVMRelease();
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76 case FIELD_CLASS_PATH:
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77 return getClassPath();
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78 case FIELD_BOOT_CLASS_PATH:
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79 return getBootClassPath();
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80 case FIELD_USER_DIR:
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81 return getUserDir();
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82 case FIELD_UNDEFINED:
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83 default:
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84 return super.get(name);
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85 }
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86 }
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87
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88 public Object[] getIds() {
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89 Object[] superIds = super.getIds();
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90 Object[] tmp = fields.keySet().toArray();
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91 Object[] res = new Object[superIds.length + tmp.length];
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92 System.arraycopy(tmp, 0, res, 0, tmp.length);
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93 System.arraycopy(superIds, 0, res, tmp.length, superIds.length);
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94 return res;
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95 }
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96
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97 public boolean has(String name) {
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98 if (getFieldID(name) != FIELD_UNDEFINED) {
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99 return true;
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100 } else {
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101 return super.has(name);
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102 }
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103 }
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104
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105 public void put(String name, Object value) {
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106 if (getFieldID(name) == FIELD_UNDEFINED) {
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107 super.put(name, value);
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108 }
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109 }
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110
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111 public String toString() {
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112 StringBuffer buf = new StringBuffer();
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113 buf.append("Java Hotspot ");
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114 buf.append(getType());
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115 buf.append(' ');
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116 buf.append(getVMBit());
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117 buf.append(" bit VM (build ");
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118 buf.append(vm.getVMRelease());
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119 buf.append(")");
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120 return buf.toString();
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121 }
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122
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123 //-- Internals only below this point
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124 private static Map fields = new HashMap();
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125 private static void addField(String name, int fieldId) {
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126 fields.put(name, new Integer(fieldId));
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127 }
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128
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129 private static int getFieldID(String name) {
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130 Integer res = (Integer) fields.get(name);
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131 return (res != null)? res.intValue() : FIELD_UNDEFINED;
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132 }
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133
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134 static {
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135 addField("addressSize", FIELD_ADDRESS_SIZE);
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136 addField("buildInfo", FIELD_BUILD_INFO);
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137 addField("cpu", FIELD_CPU);
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138 addField("flags", FIELD_FLAGS);
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139 addField("heap", FIELD_HEAP);
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140 addField("os", FIELD_OS);
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141 addField("sysProps", FIELD_SYS_PROPS);
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142 addField("threads", FIELD_THREADS);
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143 addField("type", FIELD_TYPE);
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144 addField("version", FIELD_VERSION);
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145 addField("classPath", FIELD_CLASS_PATH);
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146 addField("bootClassPath", FIELD_BOOT_CLASS_PATH);
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147 addField("userDir", FIELD_USER_DIR);
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148 }
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149
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150 private long getVMBit() {
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151 // address size in bits
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152 return vm.getAddressSize() * 8;
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153 }
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154
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155 private synchronized JSMap getFlags() {
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156 if (flagsCache == null) {
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157 VM.Flag[] flags = vm.getCommandLineFlags();
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158 Map map = new HashMap();
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159 if (flags != null) {
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160 for (int f = 0; f < flags.length; f++) {
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161 VM.Flag flag = flags[f];
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162 map.put(flag.getName(), flag.getValue());
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163 }
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164 }
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165 flagsCache = factory.newJSMap(map);
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166 }
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167 return flagsCache;
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168 }
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169
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170 private synchronized JSJavaHeap getHeap() {
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171 if (heapCache == null) {
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172 heapCache = factory.newJSJavaHeap();
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173 }
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174 return heapCache;
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175 }
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176
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177 private synchronized JSMap getSysProps() {
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178 if (sysPropsCache == null) {
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179 Properties props = vm.getSystemProperties();
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180 Map map = new HashMap();
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181 if (props != null) {
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182 Enumeration e = props.propertyNames();
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183 while (e.hasMoreElements()) {
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184 String key = (String) e.nextElement();
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185 map.put(key, props.getProperty(key));
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186 }
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187 }
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188 sysPropsCache = factory.newJSMap(map);
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189 }
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190 return sysPropsCache;
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191 }
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192
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193 private synchronized JSList getThreads() {
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194 if (threadsCache == null) {
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195 List threads = new ArrayList(0);
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196 threadsCache = factory.newJSList(threads);
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197 JavaThread jthread = vm.getThreads().first();
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198 while (jthread != null) {
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199 threads.add(jthread);
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200 jthread = jthread.next();
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201 }
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202 }
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203 return threadsCache;
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204 }
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205
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206 private String getType() {
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207 if (vm.isClientCompiler()) {
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208 return "Client";
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209 } else if (vm.isServerCompiler()) {
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210 return "Server";
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211 } else {
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212 return "Core";
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213 }
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214 }
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215
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216 private String getClassPath() {
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217 return vm.getSystemProperty("java.class.path");
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218 }
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219
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220 private String getBootClassPath() {
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221 return vm.getSystemProperty("sun.boot.class.path");
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222 }
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223
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224 private String getUserDir() {
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225 return vm.getSystemProperty("user.dir");
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226 }
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227
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228 private JSMap flagsCache;
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229 private JSJavaHeap heapCache;
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230 private JSMap sysPropsCache;
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231 private JSList threadsCache;
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232 private final JSJavaFactory factory;
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233 private final VM vm;
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234 }
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