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 *
28 * @library /lib/testlibrary
29 * @modules java.management
30 * jdk.jdi
31 *
32 * @build jdk.testlibrary.* VMConnection RunToExit Exit0
33 * @run driver RunToExit
34 */
35 import java.net.ServerSocket;
36 import com.sun.jdi.Bootstrap;
37 import com.sun.jdi.VirtualMachine;
38 import com.sun.jdi.event.*;
39 import com.sun.jdi.connect.Connector;
40 import com.sun.jdi.connect.AttachingConnector;
41 import java.net.ConnectException;
42 import java.util.Map;
43 import java.util.List;
44 import java.util.Iterator;
45 import java.util.concurrent.TimeUnit;
46 import java.util.stream.Collectors;
47 import jdk.testlibrary.ProcessTools;
48
49 public class RunToExit {
50
51 /* Increment this when ERROR: seen */
52 static volatile int error_seen = 0;
53 static volatile boolean ready = false;
54
55 /*
56 * Find a connector by name
57 */
58 private static Connector findConnector(String name) {
59 List connectors = Bootstrap.virtualMachineManager().allConnectors();
60 Iterator iter = connectors.iterator();
61 while (iter.hasNext()) {
62 Connector connector = (Connector)iter.next();
63 if (connector.name().equals(name)) {
64 return connector;
65 }
66 }
67 return null;
68 }
69
70 /*
71 * Launch a server debuggee with the given address
72 */
73 private static Process launch(String address, String class_name) throws Exception {
74 String args[] = new String[]{
75 "-agentlib:jdwp=transport=dt_socket,server=y,suspend=y,address="
76 + address,
77 class_name
78 };
79 args = VMConnection.insertDebuggeeVMOptions(args);
80
81 ProcessBuilder launcher = ProcessTools.createJavaProcessBuilder(args);
82
83 System.out.println(launcher.command().stream().collect(Collectors.joining(" ", "Starting: ", "")));
84
85 Process p = ProcessTools.startProcess(
86 class_name,
87 launcher,
88 RunToExit::checkForError,
89 RunToExit::isTransportListening,
90 0,
91 TimeUnit.NANOSECONDS
92 );
93
94 return p;
95 }
96
97 private static boolean isTransportListening(String line) {
98 return line.startsWith("Listening for transport dt_socket");
99 }
100
101 private static void checkForError(String line) {
102 if (line.contains("ERROR:")) {
103 error_seen++;
104 }
105 }
106
107 /*
108 * - pick a TCP port
109 * - Launch a server debuggee: server=y,suspend=y,address=${port}
110 * - run it to VM death
111 * - verify we saw no error
112 */
113 public static void main(String args[]) throws Exception {
114 // find a free port
115 ServerSocket ss = new ServerSocket(0);
116 int port = ss.getLocalPort();
117 ss.close();
118
119 String address = String.valueOf(port);
120
121 // launch the server debuggee
122 Process process = launch(address, "Exit0");
123
124 // attach to server debuggee and resume it so it can exit
125 AttachingConnector conn = (AttachingConnector)findConnector("com.sun.jdi.SocketAttach");
126 Map conn_args = conn.defaultArguments();
127 Connector.IntegerArgument port_arg =
128 (Connector.IntegerArgument)conn_args.get("port");
129 port_arg.setValue(port);
130
131 System.out.println("Connection arguments: " + conn_args);
132
133 VirtualMachine vm = null;
134 while (vm == null) {
135 try {
136 vm = conn.attach(conn_args);
137 } catch (ConnectException e) {
138 e.printStackTrace(System.out);
139 System.out.println("--- Debugee not ready. Retrying in 500ms. ---");
140 Thread.sleep(500);
141 }
142 }
143
144 // The first event is always a VMStartEvent, and it is always in
145 // an EventSet by itself. Wait for it.
146 EventSet evtSet = vm.eventQueue().remove();
147 for (Event event: evtSet) {
148 if (event instanceof VMStartEvent) {
149 break;
150 }
151 throw new RuntimeException("Test failed - debuggee did not start properly");
152 }
153 vm.eventRequestManager().deleteAllBreakpoints();
154 vm.resume();
155
156 int exitCode = process.waitFor();
157
158 // if the server debuggee ran cleanly, we assume we were clean
159 if (exitCode == 0 && error_seen == 0) {
160 System.out.println("Test passed - server debuggee cleanly terminated");
161 } else {
162 throw new RuntimeException("Test failed - server debuggee generated an error when it terminated, " +
163 "exit code was " + exitCode + ", " + error_seen + " error(s) seen in debugee output.");
164 }
165 }
166 }