1 /*
2 * Copyright (c) 2005, 2013, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
39 * obtained the thread dump from a target process using the VM attach mechanism
40 */
41 public class JStack {
42
43 public static void main(String[] args) throws Exception {
44 if (args.length == 0) {
45 usage(1); // no arguments
46 }
47
48 checkForUnsupportedOptions(args);
49
50 boolean locks = false;
51
52 // Parse the options (arguments starting with "-" )
53 int optionCount = 0;
54 while (optionCount < args.length) {
55 String arg = args[optionCount];
56 if (!arg.startsWith("-")) {
57 break;
58 }
59 if (arg.equals("-help") || arg.equals("-h")) {
60 usage(0);
61 }
62 else {
63 if (arg.equals("-l")) {
64 locks = true;
65 } else {
66 usage(1);
67 }
68 }
69 optionCount++;
70 }
71
72 // Next we check the parameter count.
73 int paramCount = args.length - optionCount;
74 if (paramCount != 1) {
75 usage(1);
76 }
77
78 // pass -l to thread dump operation to get extra lock info
79 String pidArg = args[optionCount];
154
155 if (paramCount > 1) {
156 SAOptionError("More than one non-option argument");
157 }
158 }
159
160 private static void SAOptionError(String msg) {
161 System.err.println("Error: " + msg);
162 System.err.println("Cannot connect to core dump or remote debug server. Use jhsdb jstack instead");
163 System.exit(1);
164 }
165
166 // print usage message
167 private static void usage(int exit) {
168 System.err.println("Usage:");
169 System.err.println(" jstack [-l] <pid>");
170 System.err.println(" (to connect to running process)");
171 System.err.println("");
172 System.err.println("Options:");
173 System.err.println(" -l long listing. Prints additional information about locks");
174 System.err.println(" -h or -help to print this help message");
175 System.exit(exit);
176 }
177 }
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1 /*
2 * Copyright (c) 2005, 2017, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
39 * obtained the thread dump from a target process using the VM attach mechanism
40 */
41 public class JStack {
42
43 public static void main(String[] args) throws Exception {
44 if (args.length == 0) {
45 usage(1); // no arguments
46 }
47
48 checkForUnsupportedOptions(args);
49
50 boolean locks = false;
51
52 // Parse the options (arguments starting with "-" )
53 int optionCount = 0;
54 while (optionCount < args.length) {
55 String arg = args[optionCount];
56 if (!arg.startsWith("-")) {
57 break;
58 }
59 if (arg.equals("-?") ||
60 arg.equals("-h") ||
61 arg.equals("--help") ||
62 // -help: legacy.
63 arg.equals("-help")) {
64 usage(0);
65 }
66 else {
67 if (arg.equals("-l")) {
68 locks = true;
69 } else {
70 usage(1);
71 }
72 }
73 optionCount++;
74 }
75
76 // Next we check the parameter count.
77 int paramCount = args.length - optionCount;
78 if (paramCount != 1) {
79 usage(1);
80 }
81
82 // pass -l to thread dump operation to get extra lock info
83 String pidArg = args[optionCount];
158
159 if (paramCount > 1) {
160 SAOptionError("More than one non-option argument");
161 }
162 }
163
164 private static void SAOptionError(String msg) {
165 System.err.println("Error: " + msg);
166 System.err.println("Cannot connect to core dump or remote debug server. Use jhsdb jstack instead");
167 System.exit(1);
168 }
169
170 // print usage message
171 private static void usage(int exit) {
172 System.err.println("Usage:");
173 System.err.println(" jstack [-l] <pid>");
174 System.err.println(" (to connect to running process)");
175 System.err.println("");
176 System.err.println("Options:");
177 System.err.println(" -l long listing. Prints additional information about locks");
178 System.err.println(" -? -h --help -help to print this help message");
179 System.exit(exit);
180 }
181 }
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