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 org.ujmp.core.longmatrix.stub.AbstractDenseLongMatrix2D;
027    
028    public class MatrixMemoryUsage extends AbstractDenseLongMatrix2D {
029            private static final long serialVersionUID = -3863745960302379726L;
030    
031            public MatrixMemoryUsage() {
032                    setLabel("Memory Usage");
033            }
034    
035            public long getLong(int row, int column) {
036                    switch (row) {
037                    case 0:
038                            return Runtime.getRuntime().freeMemory();
039                    case 1:
040                            return Runtime.getRuntime().maxMemory();
041                    default:
042                            return Runtime.getRuntime().totalMemory();
043                    }
044            }
045    
046            public long getLong(long row, long column) {
047                    switch ((int) row) {
048                    case 0:
049                            return Runtime.getRuntime().freeMemory();
050                    case 1:
051                            return Runtime.getRuntime().maxMemory();
052                    default:
053                            return Runtime.getRuntime().totalMemory();
054                    }
055            }
056    
057            public long[] getSize() {
058                    return new long[] { 3, 1 };
059            }
060    
061            public void setLong(long value, long row, long column) {
062            }
063    
064            public void setLong(long value, int row, int column) {
065            }
066    
067            
068            public boolean isReadOnly() {
069                    return true;
070            }
071    
072    }