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1 /*
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2 * Copyright 2004 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;
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26
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27 import sun.jvm.hotspot.runtime.*;
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28
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29 public class JInfo extends Tool {
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30 public JInfo(int m) {
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31 mode = m;
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32 }
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33
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34 protected boolean needsJavaPrefix() {
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35 return false;
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36 }
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37
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38 public String getName() {
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39 return "jinfo";
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40 }
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41
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42 protected void printFlagsUsage() {
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43 System.out.println(" -flags\tto print VM flags");
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44 System.out.println(" -sysprops\tto print Java System properties");
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45 System.out.println(" <no option>\tto print both of the above");
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46 super.printFlagsUsage();
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47 }
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48
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49 public static final int MODE_FLAGS = 0;
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50 public static final int MODE_SYSPROPS = 1;
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51 public static final int MODE_BOTH = 2;
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52
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53 public void run() {
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54 Tool tool = null;
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55 switch (mode) {
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56 case MODE_FLAGS:
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57 printVMFlags();
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58 return;
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59 case MODE_SYSPROPS:
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60 tool = new SysPropsDumper();
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61 break;
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62 case MODE_BOTH: {
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63 tool = new Tool() {
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64 public void run() {
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65 Tool sysProps = new SysPropsDumper();
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66 sysProps.setAgent(getAgent());
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67 System.out.println("Java System Properties:");
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68 System.out.println();
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69 sysProps.run();
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70 System.out.println();
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71 System.out.println("VM Flags:");
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72 printVMFlags();
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73 System.out.println();
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74 }
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75 };
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76 }
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77 break;
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78
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79 default:
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80 usage();
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81 break;
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82 }
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83 tool.setAgent(getAgent());
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84 tool.run();
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85 }
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86
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87 public static void main(String[] args) {
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88 int mode = -1;
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89 switch (args.length) {
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90 case 1:
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91 if (args[0].charAt(0) == '-') {
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92 // -h or -help or some invalid flag
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93 new JInfo(mode).usage();
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94 } else {
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95 mode = MODE_BOTH;
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96 }
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97 break;
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98 case 2:
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99 case 3: {
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100 String modeFlag = args[0];
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101 if (modeFlag.equals("-flags")) {
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102 mode = MODE_FLAGS;
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103 } else if (modeFlag.equals("-sysprops")) {
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104 mode = MODE_SYSPROPS;
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105 } else if (modeFlag.charAt(0) == '-') {
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106 // -h or -help or some invalid flag
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107 new JInfo(mode).usage();
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108 } else {
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109 mode = MODE_BOTH;
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110 }
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111
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112 if (mode != MODE_BOTH) {
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113 // we have to consume first flag argument.
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114 String[] newArgs = new String[args.length - 1];
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115 for (int i = 0; i < newArgs.length; i++) {
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116 newArgs[i] = args[i + 1];
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117 }
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118 args = newArgs;
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119 }
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120 break;
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121 }
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122
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123 default:
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124 new JInfo(mode).usage();
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125 }
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126
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127 JInfo jinfo = new JInfo(mode);
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128 jinfo.start(args);
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129 jinfo.stop();
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130 }
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131
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132 private void printVMFlags() {
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133 String str = Arguments.getJVMFlags();
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134 if (str != null) {
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135 System.out.println(str);
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136 }
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137 str = Arguments.getJVMArgs();
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138 if (str != null) {
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139 System.out.println(str);
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140 }
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141 }
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142
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143 private int mode;
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144 }
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