annotate agent/src/share/classes/sun/jvm/hotspot/jdi/SAPIDAttachingConnector.java @ 2376:c7f3d0b4570f

7017732: move static fields into Class to prepare for perm gen removal Reviewed-by: kvn, coleenp, twisti, stefank
author never
date Fri, 18 Mar 2011 16:00:34 -0700
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1 /*
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2 * Copyright (c) 2002, 2004, 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.
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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 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.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.jdi;
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26
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27 import com.sun.jdi.connect.*;
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28 import com.sun.jdi.Bootstrap;
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29 import com.sun.jdi.VirtualMachine;
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30 import com.sun.jdi.VirtualMachineManager;
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31
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32 import java.io.*;
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33 import java.lang.reflect.*;
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34 import java.net.*;
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35 import java.util.*;
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36
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37 public class SAPIDAttachingConnector extends ConnectorImpl implements AttachingConnector {
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38 static final String ARG_PID = "pid";
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39 private Transport transport;
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40
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41 public SAPIDAttachingConnector(com.sun.tools.jdi.VirtualMachineManagerService ignored) {
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42 this();
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43 }
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44
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45 public SAPIDAttachingConnector() {
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46 super();
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47 // fixme jjh: create resources for the these strings,
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48 addStringArgument(
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49 ARG_PID,
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50 "PID", //getString("sa.pid.label"),
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51 "PID of a Java process", //getString("sa.pid.description");
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52 "",
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53 true);
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54 transport = new Transport() {
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55 public String name() {
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56 return "local process";
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57 }
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58 };
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59 }
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60
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61 // security check to see whether the caller can perform attach
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62 private void checkProcessAttach(int pid) {
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63 SecurityManager sm = System.getSecurityManager();
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64 if (sm != null) {
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65 String os = System.getProperty("os.name");
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66 try {
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67 // Whether the caller can perform link against SA native library?
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68 checkNativeLink(sm, os);
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69 if (os.equals("SunOS") || os.equals("Linux")) {
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70 // Whether the caller can read /proc/<pid> file?
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71 sm.checkRead("/proc/" + pid);
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72 }
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73 } catch (SecurityException se) {
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74 throw new SecurityException("permission denied to attach to " + pid);
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75 }
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76 }
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77 }
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78
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79 private VirtualMachine createVirtualMachine(Class virtualMachineImplClass, int pid)
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80 throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
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81 java.lang.reflect.Method createByPIDMethod
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82 = virtualMachineImplClass.getMethod("createVirtualMachineForPID",
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83 new Class[] {
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84 VirtualMachineManager.class,
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85 Integer.TYPE, Integer.TYPE
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86 });
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87 return (VirtualMachine) createByPIDMethod.invoke(null,
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88 new Object[] {
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89 Bootstrap.virtualMachineManager(),
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90 new Integer(pid),
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91 new Integer(0)
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92 });
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93 }
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94
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95 public VirtualMachine attach(Map arguments) throws IOException,
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96 IllegalConnectorArgumentsException {
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97 int pid = 0;
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98 try {
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99 pid = Integer.parseInt(argument(ARG_PID, arguments).value());
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100 } catch (NumberFormatException nfe) {
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101 throw (IllegalConnectorArgumentsException) new IllegalConnectorArgumentsException
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102 (nfe.getMessage(), ARG_PID).initCause(nfe);
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103 }
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104
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105 checkProcessAttach(pid);
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106
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107 VirtualMachine myVM = null;
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108 try {
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109 try {
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110 Class vmImplClass = loadVirtualMachineImplClass();
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111 myVM = createVirtualMachine(vmImplClass, pid);
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112 } catch (InvocationTargetException ite) {
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113 Class vmImplClass = handleVMVersionMismatch(ite);
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114 if (vmImplClass != null) {
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115 return createVirtualMachine(vmImplClass, pid);
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116 } else {
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117 throw ite;
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118 }
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119 }
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120 } catch (Exception ee) {
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121 if (DEBUG) {
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122 System.out.println("VirtualMachineImpl() got an exception:");
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123 ee.printStackTrace();
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124 System.out.println("pid = " + pid);
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125 }
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126 throw (IOException) new IOException().initCause(ee);
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127 }
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128 setVMDisposeObserver(myVM);
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129 return myVM;
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130 }
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131
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132 public String name() {
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133 return "sun.jvm.hotspot.jdi.SAPIDAttachingConnector";
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134 }
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135
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136 public String description() {
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137 return getString("This connector allows you to attach to a Java process using the Serviceability Agent");
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138 }
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139
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140 public Transport transport() {
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141 return transport;
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142 }
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143 }