001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.core.util.matrices;
025    
026    import java.util.ArrayList;
027    import java.util.Arrays;
028    import java.util.Collection;
029    import java.util.Collections;
030    import java.util.HashSet;
031    import java.util.Map;
032    import java.util.Set;
033    
034    import org.ujmp.core.mapmatrix.AbstractMapMatrix;
035    import org.ujmp.core.mapmatrix.MapMatrix;
036    
037    public class MatrixRunningThreads extends AbstractMapMatrix<Object, Object> {
038            private static final long serialVersionUID = -6988423129848472319L;
039    
040            public MatrixRunningThreads() {
041                    setLabel("Running Threads");
042            }
043    
044            public Map<Object, Object> getMap() {
045                    return ThreadMap.getInstance();
046            }
047    
048            public MapMatrix<Object, Object> copy() {
049                    return new MatrixRunningThreads();
050            }
051    
052    }
053    
054    class ThreadMap implements Map<Object, Object> {
055    
056            private static ThreadMap threadMap = null;
057    
058            public static ThreadMap getInstance() {
059                    if (threadMap == null) {
060                            threadMap = new ThreadMap();
061                    }
062                    return threadMap;
063            }
064    
065            public void clear() {
066            }
067    
068            public boolean containsKey(Object key) {
069                    return Thread.getAllStackTraces().containsKey(key);
070            }
071    
072            public boolean containsValue(Object value) {
073                    return Thread.getAllStackTraces().containsValue(value);
074            }
075    
076            public Set<java.util.Map.Entry<Object, Object>> entrySet() {
077                    return Collections.emptySet();
078            }
079    
080            public Object get(Object key) {
081                    return Arrays.asList(Thread.getAllStackTraces().get(key));
082            }
083    
084            public boolean isEmpty() {
085                    return Thread.getAllStackTraces().isEmpty();
086            }
087    
088            public Set<Object> keySet() {
089                    return new HashSet<Object>(Thread.getAllStackTraces().keySet());
090            }
091    
092            public Object put(Object key, Object value) {
093                    return null;
094            }
095    
096            public void putAll(Map<? extends Object, ? extends Object> m) {
097            }
098    
099            public Object remove(Object key) {
100                    return null;
101            }
102    
103            public int size() {
104                    return Thread.getAllStackTraces().size();
105            }
106    
107            public Collection<Object> values() {
108                    return new ArrayList<Object>(Thread.getAllStackTraces().values());
109            }
110    
111    }