Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/tools/Tool.java @ 13388:5280822ddfcd
6626412: jstack using SA prints some info messages into err stream
Reviewed-by: coleenp, farvidsson, jbachorik, dsamersoff, sspitsyn
| author | sla |
|---|---|
| date | Thu, 14 Nov 2013 20:03:15 +0100 |
| parents | 7fe6ef09d242 |
| children | de6a9e811145 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.tools; | |
| 26 | |
| 27 import java.io.PrintStream; | |
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28 |
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29 import sun.jvm.hotspot.HotSpotAgent; |
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30 import sun.jvm.hotspot.debugger.DebuggerException; |
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31 import sun.jvm.hotspot.debugger.JVMDebugger; |
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32 import sun.jvm.hotspot.runtime.VM; |
| 0 | 33 |
| 34 // generic command line or GUI tool. | |
| 35 // override run & code main as shown below. | |
| 36 | |
| 37 public abstract class Tool implements Runnable { | |
| 8103 | 38 private HotSpotAgent agent; |
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39 private JVMDebugger jvmDebugger; |
| 0 | 40 private int debugeeType; |
| 41 | |
| 42 // debugeeType is one of constants below | |
| 43 protected static final int DEBUGEE_PID = 0; | |
| 44 protected static final int DEBUGEE_CORE = 1; | |
| 45 protected static final int DEBUGEE_REMOTE = 2; | |
| 46 | |
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47 public Tool() { |
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48 } |
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49 |
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50 public Tool(JVMDebugger d) { |
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51 jvmDebugger = d; |
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52 } |
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53 |
| 0 | 54 public String getName() { |
| 55 return getClass().getName(); | |
| 56 } | |
| 57 | |
| 58 protected boolean needsJavaPrefix() { | |
| 59 return true; | |
| 60 } | |
| 61 | |
| 8103 | 62 protected void setAgent(HotSpotAgent a) { |
| 0 | 63 agent = a; |
| 64 } | |
| 65 | |
| 66 protected void setDebugeeType(int dt) { | |
| 67 debugeeType = dt; | |
| 68 } | |
| 69 | |
| 8103 | 70 protected HotSpotAgent getAgent() { |
| 0 | 71 return agent; |
| 72 } | |
| 73 | |
| 74 protected int getDebugeeType() { | |
| 75 return debugeeType; | |
| 76 } | |
| 77 | |
| 78 protected void printUsage() { | |
| 79 String name = null; | |
| 80 if (needsJavaPrefix()) { | |
| 81 name = "java " + getName(); | |
| 82 } else { | |
| 83 name = getName(); | |
| 84 } | |
| 85 System.out.println("Usage: " + name + " [option] <pid>"); | |
| 86 System.out.println("\t\t(to connect to a live java process)"); | |
| 87 System.out.println(" or " + name + " [option] <executable> <core>"); | |
| 88 System.out.println("\t\t(to connect to a core file)"); | |
| 89 System.out.println(" or " + name + " [option] [server_id@]<remote server IP or hostname>"); | |
| 90 System.out.println("\t\t(to connect to a remote debug server)"); | |
| 91 System.out.println(); | |
| 92 System.out.println("where option must be one of:"); | |
| 93 printFlagsUsage(); | |
| 94 } | |
| 95 | |
| 96 protected void printFlagsUsage() { | |
| 97 System.out.println(" -h | -help\tto print this help message"); | |
| 98 } | |
| 99 | |
| 100 protected void usage() { | |
| 101 printUsage(); | |
| 102 } | |
| 103 | |
| 104 /* | |
| 105 Derived class main should be of the following form: | |
| 106 | |
| 107 public static void main(String[] args) { | |
| 108 <derived class> obj = new <derived class>; | |
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109 obj.execute(args); |
| 0 | 110 } |
| 111 | |
| 112 */ | |
| 113 | |
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114 protected void execute(String[] args) { |
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115 int returnStatus = 1; |
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116 |
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117 try { |
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118 returnStatus = start(args); |
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119 } finally { |
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120 stop(); |
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121 } |
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122 |
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123 // Exit with 0 or 1 |
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124 System.exit(returnStatus); |
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125 } |
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126 |
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127 public void stop() { |
| 0 | 128 if (agent != null) { |
| 129 agent.detach(); | |
| 130 } | |
| 131 } | |
| 132 | |
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133 private int start(String[] args) { |
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134 |
| 0 | 135 if ((args.length < 1) || (args.length > 2)) { |
| 136 usage(); | |
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137 return 1; |
| 0 | 138 } |
| 139 | |
| 140 // Attempt to handle -h or -help or some invalid flag | |
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141 if (args[0].startsWith("-h")) { |
| 0 | 142 usage(); |
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143 return 0; |
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144 } else if (args[0].startsWith("-")) { |
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145 usage(); |
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146 return 1; |
| 0 | 147 } |
| 148 | |
| 149 PrintStream err = System.err; | |
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150 PrintStream out = System.out; |
| 0 | 151 |
| 152 int pid = 0; | |
| 153 String coreFileName = null; | |
| 154 String executableName = null; | |
| 155 String remoteServer = null; | |
| 156 | |
| 157 switch (args.length) { | |
| 158 case 1: | |
| 159 try { | |
| 160 pid = Integer.parseInt(args[0]); | |
| 161 debugeeType = DEBUGEE_PID; | |
| 162 } catch (NumberFormatException e) { | |
| 163 // try remote server | |
| 164 remoteServer = args[0]; | |
| 165 debugeeType = DEBUGEE_REMOTE; | |
| 166 } | |
| 167 break; | |
| 168 | |
| 169 case 2: | |
| 170 executableName = args[0]; | |
| 171 coreFileName = args[1]; | |
| 172 debugeeType = DEBUGEE_CORE; | |
| 173 break; | |
| 174 | |
| 175 default: | |
| 176 usage(); | |
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177 return 1; |
| 0 | 178 } |
| 179 | |
| 8103 | 180 agent = new HotSpotAgent(); |
| 0 | 181 try { |
| 182 switch (debugeeType) { | |
| 183 case DEBUGEE_PID: | |
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184 out.println("Attaching to process ID " + pid + ", please wait..."); |
| 0 | 185 agent.attach(pid); |
| 186 break; | |
| 187 | |
| 188 case DEBUGEE_CORE: | |
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189 out.println("Attaching to core " + coreFileName + |
| 0 | 190 " from executable " + executableName + ", please wait..."); |
| 191 agent.attach(executableName, coreFileName); | |
| 192 break; | |
| 193 | |
| 194 case DEBUGEE_REMOTE: | |
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195 out.println("Attaching to remote server " + remoteServer + ", please wait..."); |
| 0 | 196 agent.attach(remoteServer); |
| 197 break; | |
| 198 } | |
| 199 } | |
| 200 catch (DebuggerException e) { | |
| 201 switch (debugeeType) { | |
| 202 case DEBUGEE_PID: | |
| 203 err.print("Error attaching to process: "); | |
| 204 break; | |
| 205 | |
| 206 case DEBUGEE_CORE: | |
| 207 err.print("Error attaching to core file: "); | |
| 208 break; | |
| 209 | |
| 210 case DEBUGEE_REMOTE: | |
| 211 err.print("Error attaching to remote server: "); | |
| 212 break; | |
| 213 } | |
| 214 if (e.getMessage() != null) { | |
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215 err.println(e.getMessage()); |
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216 e.printStackTrace(); |
| 0 | 217 } |
| 218 err.println(); | |
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219 return 1; |
| 0 | 220 } |
| 221 | |
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222 out.println("Debugger attached successfully."); |
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223 startInternal(); |
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224 return 0; |
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225 } |
| 0 | 226 |
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227 // When using an existing JVMDebugger. |
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228 public void start() { |
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229 |
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230 if (jvmDebugger == null) { |
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231 throw new RuntimeException("Tool.start() called with no JVMDebugger set."); |
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232 } |
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233 agent = new HotSpotAgent(); |
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234 agent.attach(jvmDebugger); |
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235 startInternal(); |
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236 } |
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237 |
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238 // Remains of the start mechanism, common to both start methods. |
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239 private void startInternal() { |
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240 |
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241 PrintStream out = System.out; |
| 8103 | 242 VM vm = VM.getVM(); |
| 243 if (vm.isCore()) { | |
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244 out.println("Core build detected."); |
| 8103 | 245 } else if (vm.isClientCompiler()) { |
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246 out.println("Client compiler detected."); |
| 8103 | 247 } else if (vm.isServerCompiler()) { |
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248 out.println("Server compiler detected."); |
| 8103 | 249 } else { |
| 250 throw new RuntimeException("Fatal error: " | |
| 251 + "should have been able to detect core/C1/C2 build"); | |
| 252 } | |
| 0 | 253 |
| 8103 | 254 String version = vm.getVMRelease(); |
| 255 if (version != null) { | |
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256 out.print("JVM version is "); |
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257 out.println(version); |
| 8103 | 258 } |
| 0 | 259 |
| 8103 | 260 run(); |
| 0 | 261 } |
| 262 } |