1 /*
2 * Copyright (c) 2004, 2015, 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.
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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /* @test
25 * @bug 4997445
26 * @summary Test that with server=y, when VM runs to System.exit() no error happens
27 * @library /lib/testlibrary
28 * @modules java.management
29 * jdk.jdi
30 * @build jdk.testlibrary.* VMConnection RunToExit Exit0
31 * @run driver RunToExit
32 */
33 import java.net.ServerSocket;
34 import com.sun.jdi.Bootstrap;
35 import com.sun.jdi.VirtualMachine;
36 import com.sun.jdi.event.*;
37 import com.sun.jdi.connect.Connector;
38 import com.sun.jdi.connect.AttachingConnector;
39 import java.net.ConnectException;
40 import java.util.Map;
41 import java.util.List;
42 import java.util.Iterator;
43 import java.util.concurrent.TimeUnit;
44 import java.util.stream.Collectors;
45 import jdk.testlibrary.ProcessTools;
46
47 public class RunToExit {
48
49 /* Increment this when ERROR: seen */
50 static volatile int error_seen = 0;
51 static volatile boolean ready = false;
52
53 /*
54 * Find a connector by name
55 */
56 private static Connector findConnector(String name) {
57 List connectors = Bootstrap.virtualMachineManager().allConnectors();
58 Iterator iter = connectors.iterator();
59 while (iter.hasNext()) {
60 Connector connector = (Connector)iter.next();
61 if (connector.name().equals(name)) {
62 return connector;
63 }
64 }
65 return null;
66 }
67
68 /*
69 * Launch a server debuggee with the given address
70 */
71 private static Process launch(String address, String class_name) throws Exception {
72 String args[] = new String[]{
73 "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address="
74 + address,
75 class_name
76 };
77 args = VMConnection.insertDebuggeeVMOptions(args);
78
79 ProcessBuilder launcher = ProcessTools.createJavaProcessBuilder(args);
80
81 System.out.println(launcher.command().stream().collect(Collectors.joining(" ", "Starting: ", "")));
82
83 Process p = ProcessTools.startProcess(
84 class_name,
85 launcher,
86 RunToExit::checkForError,
87 RunToExit::isTransportListening,
88 0,
89 TimeUnit.NANOSECONDS
90 );
91
92 return p;
93 }
94
95 private static boolean isTransportListening(String line) {
96 return line.startsWith("Listening for transport dt_socket");
97 }
98
99 private static void checkForError(String line) {
100 if (line.contains("ERROR:")) {
101 error_seen++;
102 }
103 }
104
105 /*
106 * - pick a TCP port
107 * - Launch a server debuggee: server=y,suspend=y,address=${port}
108 * - run it to VM death
109 * - verify we saw no error
110 */
111 public static void main(String args[]) throws Exception {
112 // find a free port
113 ServerSocket ss = new ServerSocket(0);
114 int port = ss.getLocalPort();
115 ss.close();
116
117 String address = String.valueOf(port);
118
119 // launch the server debuggee
120 Process process = launch(address, "Exit0");
121
122 // attach to server debuggee and resume it so it can exit
123 AttachingConnector conn = (AttachingConnector)findConnector("com.sun.jdi.SocketAttach");
124 Map conn_args = conn.defaultArguments();
125 Connector.IntegerArgument port_arg =
126 (Connector.IntegerArgument)conn_args.get("port");
127 port_arg.setValue(port);
128
129 System.out.println("Connection arguments: " + conn_args);
130
131 VirtualMachine vm = null;
132 while (vm == null) {
133 try {
134 vm = conn.attach(conn_args);
135 } catch (ConnectException e) {
136 e.printStackTrace(System.out);
137 System.out.println("--- Debugee not ready. Retrying in 500ms. ---");
138 Thread.sleep(500);
139 }
140 }
141
142 // The first event is always a VMStartEvent, and it is always in
143 // an EventSet by itself. Wait for it.
144 EventSet evtSet = vm.eventQueue().remove();
145 for (Event event: evtSet) {
146 if (event instanceof VMStartEvent) {
147 break;
148 }
149 throw new RuntimeException("Test failed - debuggee did not start properly");
150 }
151 vm.eventRequestManager().deleteAllBreakpoints();
152 vm.resume();
153
154 int exitCode = process.waitFor();
155
156 // if the server debuggee ran cleanly, we assume we were clean
157 if (exitCode == 0 && error_seen == 0) {
158 System.out.println("Test passed - server debuggee cleanly terminated");
159 } else {
160 throw new RuntimeException("Test failed - server debuggee generated an error when it terminated, " +
161 "exit code was " + exitCode + ", " + error_seen + " error(s) seen in debugee output.");
162 }
163 }
164 }