1/*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements.  See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License.  You may obtain a copy of the License at
8 *
9 *     http://www.apache.org/licenses/LICENSE-2.0
10 *
11 *  Unless required by applicable law or agreed to in writing, software
12 *  distributed under the License is distributed on an "AS IS" BASIS,
13 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 *
15 *  See the License for the specific language governing permissions and
16 *  limitations under the License.
17 */
18
19package org.apache.harmony.jpda.tests.jdwp.ThreadReference;
20
21import org.apache.harmony.jpda.tests.framework.DebuggeeSynchronizer;
22import org.apache.harmony.jpda.tests.framework.LogWriter;
23import org.apache.harmony.jpda.tests.share.JPDADebuggeeSynchronizer;
24import org.apache.harmony.jpda.tests.share.SyncDebuggee;
25
26
27/**
28 * The class specifies debuggee for <code>org.apache.harmony.jpda.tests.jdwp.ThreadReference.OwnedMonitorsStackDepthInfoTest</code>.
29 * This debuggee starts the tested thread <code>TESTED_THREAD</code> which
30 * synchronized with test via the <code>SGNL_READY</code> and
31 * <code>SGNL_CONTINUE</code> signals.
32 */
33public class OwnedMonitorsStackDepthInfoDebuggee extends SyncDebuggee {
34
35    public static final String TESTED_THREAD = "TestedThread";
36
37    // These two objects are used
38    static Object waitForStart = new Object();
39    static Object waitForFinish = new Object();
40
41    public void run() {
42        DebuggeeThread thrd = new DebuggeeThread(TESTED_THREAD,
43                logWriter, synchronizer);
44
45        synchronized(waitForStart){
46            thrd.start();
47            try {
48                waitForStart.wait();
49            } catch (InterruptedException e) {
50
51            }
52        }
53
54        synchronized(waitForFinish){
55            logWriter.println("thread is finished");
56        }
57    }
58
59    class DebuggeeThread extends Thread {
60
61        LogWriter logWriter;
62        DebuggeeSynchronizer synchronizer;
63
64        public DebuggeeThread(String name, LogWriter logWriter,
65                DebuggeeSynchronizer synchronizer) {
66            super(name);
67            this.logWriter = logWriter;
68            this.synchronizer = synchronizer;
69        }
70
71        // Deliberately make several stack frames with known monitor states.
72
73        // 1. No monitors held in the outermost frame.
74        public void run() {
75            run1();
76        }
77
78        // 2. One monitor ("this") held in the next frame.
79        private synchronized void run1() {
80            run2();
81        }
82
83        // 3. No monitors held in the next frame.
84        private void run2() {
85            run3();
86        }
87
88        // 4. Two monitors held in the frame after that.
89        private void run3() {
90            synchronized(OwnedMonitorsStackDepthInfoDebuggee.waitForFinish){
91
92                synchronized(OwnedMonitorsStackDepthInfoDebuggee.waitForStart){
93
94                    OwnedMonitorsStackDepthInfoDebuggee.waitForStart.notifyAll();
95
96                    logWriter.println(getName() +  ": started");
97                    synchronizer.sendMessage(JPDADebuggeeSynchronizer.SGNL_READY);
98
99                    logWriter.println(getName() +  ": wait for SGNL_CONTINUE");
100                    synchronizer.receiveMessage(JPDADebuggeeSynchronizer.SGNL_CONTINUE);
101                    logWriter.println(getName() +  ": finished");
102                }
103            }
104        }
105    }
106
107    public static void main(String [] args) {
108        runDebuggee(OwnedMonitorsStackDepthInfoDebuggee.class);
109    }
110}
111