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1 /* |
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2 * Copyright (c) 1998, 2017, Oracle and/or its affiliates. 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. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.tools.jdi; |
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27 |
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28 import java.io.File; |
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29 import java.io.IOException; |
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30 import java.lang.reflect.InvocationTargetException; |
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31 import java.util.Map; |
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32 import java.util.Random; |
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33 |
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34 import com.sun.jdi.VirtualMachine; |
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35 import com.sun.jdi.connect.Connector; |
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36 import com.sun.jdi.connect.IllegalConnectorArgumentsException; |
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37 import com.sun.jdi.connect.Transport; |
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38 import com.sun.jdi.connect.VMStartException; |
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39 import com.sun.jdi.connect.spi.TransportService; |
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40 |
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41 public class SunCommandLineLauncher extends AbstractLauncher { |
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42 |
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43 static private final String ARG_HOME = "home"; |
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44 static private final String ARG_OPTIONS = "options"; |
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45 static private final String ARG_MAIN = "main"; |
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46 static private final String ARG_INIT_SUSPEND = "suspend"; |
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47 static private final String ARG_QUOTE = "quote"; |
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48 static private final String ARG_VM_EXEC = "vmexec"; |
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49 |
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50 TransportService transportService; |
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51 Transport transport; |
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52 boolean usingSharedMemory = false; |
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53 |
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54 TransportService transportService() { |
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55 return transportService; |
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56 } |
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57 |
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58 public Transport transport() { |
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59 return transport; |
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60 } |
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61 |
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62 public SunCommandLineLauncher() { |
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63 super(); |
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64 |
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65 /** |
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66 * By default this connector uses either the shared memory |
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67 * transport or the socket transport |
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68 */ |
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69 try { |
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70 transportService = (TransportService)Class. |
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71 forName("com.sun.tools.jdi.SharedMemoryTransportService"). |
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72 getDeclaredConstructor().newInstance(); |
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73 transport = new Transport() { |
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74 public String name() { |
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75 return "dt_shmem"; |
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76 } |
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77 }; |
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78 usingSharedMemory = true; |
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79 } catch (ClassNotFoundException | |
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80 UnsatisfiedLinkError | |
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81 InstantiationException | |
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82 InvocationTargetException | |
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83 IllegalAccessException | |
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84 NoSuchMethodException x) { |
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85 }; |
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86 if (transportService == null) { |
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87 transportService = new SocketTransportService(); |
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88 transport = new Transport() { |
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89 public String name() { |
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90 return "dt_socket"; |
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91 } |
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92 }; |
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93 } |
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94 |
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95 addStringArgument( |
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96 ARG_HOME, |
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97 getString("sun.home.label"), |
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98 getString("sun.home"), |
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99 System.getProperty("java.home"), |
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100 false); |
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101 addStringArgument( |
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102 ARG_OPTIONS, |
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103 getString("sun.options.label"), |
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104 getString("sun.options"), |
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105 "", |
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106 false); |
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107 addStringArgument( |
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108 ARG_MAIN, |
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109 getString("sun.main.label"), |
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110 getString("sun.main"), |
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111 "", |
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112 true); |
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113 |
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114 addBooleanArgument( |
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115 ARG_INIT_SUSPEND, |
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116 getString("sun.init_suspend.label"), |
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117 getString("sun.init_suspend"), |
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118 true, |
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119 false); |
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120 |
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121 addStringArgument( |
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122 ARG_QUOTE, |
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123 getString("sun.quote.label"), |
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124 getString("sun.quote"), |
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125 "\"", |
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126 true); |
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127 addStringArgument( |
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128 ARG_VM_EXEC, |
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129 getString("sun.vm_exec.label"), |
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130 getString("sun.vm_exec"), |
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131 "java", |
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132 true); |
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133 } |
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134 |
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135 static boolean hasWhitespace(String string) { |
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136 int length = string.length(); |
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137 for (int i = 0; i < length; i++) { |
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138 if (Character.isWhitespace(string.charAt(i))) { |
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139 return true; |
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140 } |
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141 } |
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142 return false; |
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143 } |
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144 |
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145 public VirtualMachine |
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146 launch(Map<String, ? extends Connector.Argument> arguments) |
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147 throws IOException, IllegalConnectorArgumentsException, |
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148 VMStartException |
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149 { |
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150 VirtualMachine vm; |
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151 |
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152 String home = argument(ARG_HOME, arguments).value(); |
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153 String options = argument(ARG_OPTIONS, arguments).value(); |
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154 String mainClassAndArgs = argument(ARG_MAIN, arguments).value(); |
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155 boolean wait = ((BooleanArgumentImpl)argument(ARG_INIT_SUSPEND, |
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156 arguments)).booleanValue(); |
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157 String quote = argument(ARG_QUOTE, arguments).value(); |
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158 String exe = argument(ARG_VM_EXEC, arguments).value(); |
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159 String exePath = null; |
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160 |
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161 if (quote.length() > 1) { |
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162 throw new IllegalConnectorArgumentsException("Invalid length", |
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163 ARG_QUOTE); |
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164 } |
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165 |
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166 if ((options.indexOf("-Djava.compiler=") != -1) && |
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167 (options.toLowerCase().indexOf("-djava.compiler=none") == -1)) { |
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168 throw new IllegalConnectorArgumentsException("Cannot debug with a JIT compiler", |
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169 ARG_OPTIONS); |
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170 } |
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171 |
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172 /* |
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173 * Start listening. |
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174 * If we're using the shared memory transport then we pick a |
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175 * random address rather than using the (fixed) default. |
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176 * Random() uses System.currentTimeMillis() as the seed |
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177 * which can be a problem on windows (many calls to |
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178 * currentTimeMillis can return the same value), so |
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179 * we do a few retries if we get an IOException (we |
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180 * assume the IOException is the filename is already in use.) |
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181 */ |
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182 TransportService.ListenKey listenKey; |
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183 if (usingSharedMemory) { |
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184 Random rr = new Random(); |
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185 int failCount = 0; |
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186 while(true) { |
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187 try { |
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188 String address = "javadebug" + |
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189 String.valueOf(rr.nextInt(100000)); |
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190 listenKey = transportService().startListening(address); |
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191 break; |
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192 } catch (IOException ioe) { |
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193 if (++failCount > 5) { |
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194 throw ioe; |
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195 } |
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196 } |
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197 } |
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198 } else { |
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199 listenKey = transportService().startListening(); |
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200 } |
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201 String address = listenKey.address(); |
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202 |
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203 try { |
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204 if (home.length() > 0) { |
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205 exePath = home + File.separator + "bin" + File.separator + exe; |
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206 } else { |
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207 exePath = exe; |
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208 } |
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209 // Quote only if necessary in case the quote arg value is bogus |
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210 if (hasWhitespace(exePath)) { |
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211 exePath = quote + exePath + quote; |
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212 } |
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213 |
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214 String xrun = "transport=" + transport().name() + |
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215 ",address=" + address + |
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216 ",suspend=" + (wait? 'y' : 'n'); |
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217 // Quote only if necessary in case the quote arg value is bogus |
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218 if (hasWhitespace(xrun)) { |
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219 xrun = quote + xrun + quote; |
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220 } |
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221 |
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222 String command = exePath + ' ' + |
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223 options + ' ' + |
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224 "-Xdebug " + |
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225 "-Xrunjdwp:" + xrun + ' ' + |
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226 mainClassAndArgs; |
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227 |
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228 // System.err.println("Command: \"" + command + '"'); |
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229 vm = launch(tokenizeCommand(command, quote.charAt(0)), address, listenKey, |
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230 transportService()); |
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231 } finally { |
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232 transportService().stopListening(listenKey); |
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233 } |
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234 |
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235 return vm; |
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236 } |
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237 |
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238 public String name() { |
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239 return "com.sun.jdi.CommandLineLaunch"; |
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240 } |
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241 |
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242 public String description() { |
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243 return getString("sun.description"); |
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244 } |
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245 } |