EventQueueDisconnectTest.java revision 11884:b45c81ca8671 
1/*
2 * Copyright (c) 2001, 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/**
25 *  @test
26 *  @bug 4425852
27 *  @author Robert Field
28 *
29 *  @modules jdk.jdi
30 *  @run build VMConnection
31 *  @run compile -g EventQueueDisconnectTest.java
32 *  @run driver EventQueueDisconnectTest
33 *
34 *  @summary EventQueueDisconnectTest checks to see that
35 *  VMDisconnectedException is never thrown before VMDisconnectEvent.
36 *
37 * Failure mode for this test is throwing VMDisconnectedException
38 * on vm.eventQueue().remove();
39 * Does not use a scaffold since we don't want that hiding the exception.
40 */
41import com.sun.jdi.*;
42import com.sun.jdi.event.*;
43import com.sun.jdi.request.*;
44
45
46    /********** target program **********/
47
48class EventQueueDisconnectTarg {
49    public static void main(String args[]) {
50        for (int i=0; i < 10; ++i) {
51            Say(i);
52        }
53    }
54    static void Say(int what) {
55        System.out.println("Say " + what);
56    }
57}
58
59    /********** test program **********/
60
61public class EventQueueDisconnectTest {
62
63    public static void main(String args[]) throws Exception {
64        VMConnection connection = new VMConnection(
65                                       "com.sun.jdi.CommandLineLaunch:",
66                                       VirtualMachine.TRACE_NONE);
67        connection.setConnectorArg("main", "EventQueueDisconnectTarg");
68        String debuggeeVMOptions = VMConnection.getDebuggeeVMOptions();
69        if (!debuggeeVMOptions.equals("")) {
70            if (connection.connectorArg("options").length() > 0) {
71                throw new IllegalArgumentException("VM options in two places");
72            }
73            connection.setConnectorArg("options", debuggeeVMOptions);
74        }
75        VirtualMachine vm = connection.open();
76        EventRequestManager requestManager = vm.eventRequestManager();
77        MethodEntryRequest req = requestManager.createMethodEntryRequest();
78        req.addClassFilter("EventQueueDisconnectTarg");
79        req.setSuspendPolicy(EventRequest.SUSPEND_NONE);
80        req.enable();
81
82        // We need to have the BE stop when VMDeath comes
83        VMDeathRequest ourVMDeathRequest = requestManager.createVMDeathRequest();
84        ourVMDeathRequest.setSuspendPolicy(EventRequest.SUSPEND_ALL);
85        ourVMDeathRequest.enable();
86
87        vm.resume();
88        while (true) {
89            EventSet set = vm.eventQueue().remove();
90            Event event = set.eventIterator().nextEvent();
91
92            System.err.println("EventSet with: " + event.getClass());
93
94            if (event instanceof VMDisconnectEvent) {
95                System.err.println("Disconnecting successfully");
96                break;
97            }
98
99            if (event instanceof VMDeathEvent) {
100                System.err.println("Pausing after VM death");
101
102                // sleep a few seconds
103                try {
104                    Thread.sleep(40 * 1000);
105                } catch (InterruptedException exc) {
106                    // ignore
107                }
108            }
109
110            set.resume();
111        }
112
113        System.err.println("EventQueueDisconnectTest passed");
114    }
115}
116