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

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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-1:000000000000 0:a61af66fc99e
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 SAPIDAttachingConnector extends ConnectorImpl implements AttachingConnector {
38 static final String ARG_PID = "pid";
39 private Transport transport;
40
41 public SAPIDAttachingConnector(com.sun.tools.jdi.VirtualMachineManagerService ignored) {
42 this();
43 }
44
45 public SAPIDAttachingConnector() {
46 super();
47 // fixme jjh: create resources for the these strings,
48 addStringArgument(
49 ARG_PID,
50 "PID", //getString("sa.pid.label"),
51 "PID of a Java process", //getString("sa.pid.description");
52 "",
53 true);
54 transport = new Transport() {
55 public String name() {
56 return "local process";
57 }
58 };
59 }
60
61 // security check to see whether the caller can perform attach
62 private void checkProcessAttach(int pid) {
63 SecurityManager sm = System.getSecurityManager();
64 if (sm != null) {
65 String os = System.getProperty("os.name");
66 try {
67 // Whether the caller can perform link against SA native library?
68 checkNativeLink(sm, os);
69 if (os.equals("SunOS") || os.equals("Linux")) {
70 // Whether the caller can read /proc/<pid> file?
71 sm.checkRead("/proc/" + pid);
72 }
73 } catch (SecurityException se) {
74 throw new SecurityException("permission denied to attach to " + pid);
75 }
76 }
77 }
78
79 private VirtualMachine createVirtualMachine(Class virtualMachineImplClass, int pid)
80 throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
81 java.lang.reflect.Method createByPIDMethod
82 = virtualMachineImplClass.getMethod("createVirtualMachineForPID",
83 new Class[] {
84 VirtualMachineManager.class,
85 Integer.TYPE, Integer.TYPE
86 });
87 return (VirtualMachine) createByPIDMethod.invoke(null,
88 new Object[] {
89 Bootstrap.virtualMachineManager(),
90 new Integer(pid),
91 new Integer(0)
92 });
93 }
94
95 public VirtualMachine attach(Map arguments) throws IOException,
96 IllegalConnectorArgumentsException {
97 int pid = 0;
98 try {
99 pid = Integer.parseInt(argument(ARG_PID, arguments).value());
100 } catch (NumberFormatException nfe) {
101 throw (IllegalConnectorArgumentsException) new IllegalConnectorArgumentsException
102 (nfe.getMessage(), ARG_PID).initCause(nfe);
103 }
104
105 checkProcessAttach(pid);
106
107 VirtualMachine myVM = null;
108 try {
109 try {
110 Class vmImplClass = loadVirtualMachineImplClass();
111 myVM = createVirtualMachine(vmImplClass, pid);
112 } catch (InvocationTargetException ite) {
113 Class vmImplClass = handleVMVersionMismatch(ite);
114 if (vmImplClass != null) {
115 return createVirtualMachine(vmImplClass, pid);
116 } else {
117 throw ite;
118 }
119 }
120 } catch (Exception ee) {
121 if (DEBUG) {
122 System.out.println("VirtualMachineImpl() got an exception:");
123 ee.printStackTrace();
124 System.out.println("pid = " + pid);
125 }
126 throw (IOException) new IOException().initCause(ee);
127 }
128 setVMDisposeObserver(myVM);
129 return myVM;
130 }
131
132 public String name() {
133 return "sun.jvm.hotspot.jdi.SAPIDAttachingConnector";
134 }
135
136 public String description() {
137 return getString("This connector allows you to attach to a Java process using the Serviceability Agent");
138 }
139
140 public Transport transport() {
141 return transport;
142 }
143 }