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

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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children c18cbe5936b8
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-1:000000000000 0:a61af66fc99e
1 /*
2 * Copyright 2000-2003 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;
26
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.debugger.dbx.*;
29 import sun.jvm.hotspot.runtime.*;
30 import sun.jvm.hotspot.oops.*;
31
32 public class DebugServer {
33 private void usage() {
34 System.out.println("usage: java " + getClass().getName() + " <pid> [server id]");
35 System.out.println(" or: java " + getClass().getName() + " <executable> <core> [server id]");
36 System.out.println("\"pid\" must be the process ID of a HotSpot process.");
37 System.out.println("If reading a core file, \"executable\" must (currently) be the");
38 System.out.println("full path name to the precise java executable which generated");
39 System.out.println("the core file (not, on Solaris, the \"java\" wrapper script in");
40 System.out.println("the \"bin\" subdirectory of the JDK.)");
41 System.out.println("The \"server id\" is a unique name for a specific remote debuggee.");
42 System.exit(1);
43 }
44
45 public static void main(String[] args) {
46 new DebugServer().run(args);
47 }
48
49 private void run(String[] args) {
50 if ((args.length < 1) || (args.length > 3)) {
51 usage();
52 }
53
54 // Attempt to handle "-h" or "-help"
55 if (args[0].startsWith("-")) {
56 usage();
57 }
58
59 int pid = 0;
60 boolean usePid = false;
61 String coreFileName = null;
62 // FIXME: would be nice to pick this up from the core file
63 // somehow, but that doesn't look possible. Should at least figure
64 // it out from a path to the JDK.
65 String javaExecutableName = null;
66 String serverID = null;
67
68 switch (args.length) {
69 case 1:
70 try {
71 pid = Integer.parseInt(args[0]);
72 usePid = true;
73 } catch (NumberFormatException e) {
74 usage();
75 }
76 break;
77
78 case 2:
79 // either we have pid and server id or exec file and core file
80 try {
81 pid = Integer.parseInt(args[0]);
82 usePid = true;
83 serverID = args[1];
84 } catch (NumberFormatException e) {
85 pid = -1;
86 usePid = false;
87 javaExecutableName = args[0];
88 coreFileName = args[1];
89 }
90 break;
91
92 case 3:
93 javaExecutableName = args[0];
94 coreFileName = args[1];
95 serverID = args[2];
96 break;
97
98 default:
99 // should not happend, taken care already.
100 break;
101 }
102
103 final HotSpotAgent agent = new HotSpotAgent();
104 try {
105 if (usePid) {
106 System.err.println("Attaching to process ID " + pid + " and starting RMI services, please wait...");
107 agent.startServer(pid, serverID);
108 } else {
109 System.err.println("Attaching to core " + coreFileName +
110 " from executable " + javaExecutableName + " and starting RMI services, please wait...");
111 agent.startServer(javaExecutableName, coreFileName, serverID);
112 }
113 }
114 catch (DebuggerException e) {
115 if (usePid) {
116 System.err.print("Error attaching to process or starting server: ");
117 } else {
118 System.err.print("Error attaching to core file or starting server: ");
119 }
120 e.printStackTrace();
121 System.exit(1);
122 }
123
124 // shutdown hook to clean-up the server in case of forced exit.
125 Runtime.getRuntime().addShutdownHook(new java.lang.Thread(
126 new Runnable() {
127 public void run() {
128 agent.shutdownServer();
129 }
130 }));
131 System.err.println("Debugger attached and RMI services started.");
132 }
133 }