001/* For testing the workspace synchronization features.
002
003 Copyright (c) 2003-2014 The Regents of the University of California.
004 All rights reserved.
005 Permission is hereby granted, without written agreement and without
006 license or royalty fees, to use, copy, modify, and distribute this
007 software and its documentation for any purpose, provided that the above
008 copyright notice and the following two paragraphs appear in all copies
009 of this software.
010
011 IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
012 FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
013 ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
014 THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
015 SUCH DAMAGE.
016
017 THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
018 INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
019 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
020 PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
021 CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
022 ENHANCEMENTS, OR MODIFICATIONS.
023
024 PT_COPYRIGHT_VERSION_2
025 COPYRIGHTENDKEY
026
027
028 */
029package ptolemy.kernel.util.test;
030
031import java.util.LinkedList;
032import java.util.List;
033
034import ptolemy.kernel.util.Workspace;
035
036//////////////////////////////////////////////////////////////////////////
037//// TestWorkspace4
038
039/**
040 Test the following scenario: thread T1 gets write access; T2 waits
041 for read access and is interrupted, then waits for read access again;
042 T1 releases write access; T2 gets/releases read access; another thread
043 T3 gets write access; T2 handles failure (being interrupted) in getting
044 read access.
045
046 @author Xiaojun Liu
047 @version $Id$
048 @since Ptolemy II 3.0
049 @Pt.ProposedRating Green (eal)
050 @Pt.AcceptedRating Red (cxh)
051
052 */
053public class TestWorkspace4 extends TestWorkspaceBase {
054    @Override
055    public void initializeTest() {
056        Workspace workspace = new Workspace();
057        List actions = new LinkedList();
058        AccessAction action = new AccessAction(workspace, 0, 'W', 1000, null,
059                _record, "A0");
060        actions.add(action);
061        _accessThreads.add(new AccessThread("T1", actions, this));
062        actions = new LinkedList();
063        action = new AccessAction(workspace, 500, 'R', 500, null, _record,
064                "A2");
065        actions.add(action);
066        action = new AccessAction(workspace, 0, 'R', 0, null, _record, "A3");
067        actions.add(action);
068        _thread = new AccessThread("T2", actions, this);
069        _accessThreads.add(_thread);
070        actions = new LinkedList();
071        action = new AccessAction(workspace, 2200, 'W', 100, null, _record,
072                "A1");
073        actions.add(action);
074        _accessThreads.add(new AccessThread("T3", actions, this));
075        _testTime = 5000; // ms
076    }
077
078    @Override
079    public void runTest() {
080        new Thread() {
081            @Override
082            public void run() {
083                try {
084                    sleep(1000);
085                } catch (InterruptedException e) {
086                    // ignore
087                }
088
089                // interrupt T2 while it is waiting for read access
090                _thread.interrupt();
091            }
092        }.start();
093        super.runTest();
094    }
095
096    private Thread _thread;
097}