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comparison agent/src/share/classes/sun/jvm/hotspot/jdi/SACoreAttachingConnector.java @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 2002-2004 Sun Microsystems, Inc. All Rights Reserved.
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 *
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any questions.
22 *
23 */
24
25 package sun.jvm.hotspot.jdi;
26
27 import com.sun.jdi.connect.*;
28 import com.sun.jdi.Bootstrap;
29 import com.sun.jdi.VirtualMachine;
30 import com.sun.jdi.VirtualMachineManager;
31
32 import java.io.*;
33 import java.lang.reflect.*;
34 import java.net.*;
35 import java.util.*;
36
37 public class SACoreAttachingConnector extends ConnectorImpl implements AttachingConnector {
38
39 static final String ARG_COREFILE = "core";
40 static final String ARG_JAVA_EXECUTABLE = "javaExecutable";
41 private Transport transport;
42
43 public SACoreAttachingConnector(com.sun.tools.jdi.VirtualMachineManagerService ignored) {
44 this();
45 }
46
47 public SACoreAttachingConnector() {
48 super();
49 //fixme jjh Must create resources for these strings
50 addStringArgument(
51 ARG_JAVA_EXECUTABLE,
52 "Java Executable", //getString("sa.javaExecutable.label"),
53 "Pathname of Java Executable", //getString("sa.javaExecutable.description");
54 "",
55 true);
56
57 addStringArgument(
58 ARG_COREFILE,
59 "Corefile", // getString("sa.CoreFile.label"),
60 "Pathname of a corefile from a Java Process", //getString("sa.CoreFile.description"),
61 "core",
62 false);
63
64 transport = new Transport() {
65 public String name() {
66 return "filesystem";
67 }
68 };
69 }
70
71 // security check to see whether the caller can perform attach
72 private void checkCoreAttach(String corefile) {
73 SecurityManager sm = System.getSecurityManager();
74 if (sm != null) {
75 try {
76 // whether the caller can link against SA native library?
77 checkNativeLink(sm, System.getProperty("os.name"));
78 // check whether the caller can read the core file?
79 sm.checkRead(corefile);
80 } catch (SecurityException se) {
81 throw new SecurityException("permission denied to attach to " + corefile);
82 }
83 }
84 }
85
86 private VirtualMachine createVirtualMachine(Class vmImplClass,
87 String javaExec, String corefile)
88 throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
89 java.lang.reflect.Method connectByCoreMethod = vmImplClass.getMethod(
90 "createVirtualMachineForCorefile",
91 new Class[] {
92 VirtualMachineManager.class,
93 String.class, String.class,
94 Integer.TYPE
95 });
96 return (VirtualMachine) connectByCoreMethod.invoke(null,
97 new Object[] {
98 Bootstrap.virtualMachineManager(),
99 javaExec,
100 corefile,
101 new Integer(0)
102 });
103 }
104
105 public VirtualMachine attach(Map arguments) throws IOException,
106 IllegalConnectorArgumentsException {
107 String javaExec = argument(ARG_JAVA_EXECUTABLE, arguments).value();
108 if (javaExec == null || javaExec.equals("")) {
109 throw new IllegalConnectorArgumentsException("javaExec should be non-null and non-empty",
110 ARG_JAVA_EXECUTABLE);
111 }
112 String corefile = argument(ARG_COREFILE, arguments).value();
113 if (corefile == null || corefile.equals("")) {
114 throw new IllegalConnectorArgumentsException("corefile should be non-null and non-empty",
115 ARG_COREFILE);
116 }
117
118 checkCoreAttach(corefile);
119
120 VirtualMachine myVM = null;
121 try {
122 try {
123 Class vmImplClass = loadVirtualMachineImplClass();
124 myVM = createVirtualMachine(vmImplClass, javaExec, corefile);
125 } catch (InvocationTargetException ite) {
126 Class vmImplClass = handleVMVersionMismatch(ite);
127 if (vmImplClass != null) {
128 return createVirtualMachine(vmImplClass, javaExec, corefile);
129 } else {
130 throw ite;
131 }
132 }
133 } catch (Exception ee) {
134 if (DEBUG) {
135 System.out.println("VirtualMachineImpl() got an exception:");
136 ee.printStackTrace();
137 System.out.println("coreFile = " + corefile + ", javaExec = " + javaExec);
138 }
139 throw (IOException) new IOException().initCause(ee);
140 }
141 setVMDisposeObserver(myVM);
142 return myVM;
143 }
144
145 public String name() {
146 return "sun.jvm.hotspot.jdi.SACoreAttachingConnector";
147 }
148
149 public String description() {
150 return getString("This connector allows you to attach to a core file using the Serviceability Agent");
151 }
152
153 public Transport transport() {
154 return transport;
155 }
156 }