001    /*--------------------------------------------------------------------------+
002    $Id: DiagnosticUtils.java 26283 2010-02-18 11:18:57Z juergens $
003    |                                                                          |
004    | Copyright 2005-2010 Technische Universitaet Muenchen                     |
005    |                                                                          |
006    | Licensed under the Apache License, Version 2.0 (the "License");          |
007    | you may not use this file except in compliance with the License.         |
008    | You may obtain a copy of the License at                                  |
009    |                                                                          |
010    |    http://www.apache.org/licenses/LICENSE-2.0                            |
011    |                                                                          |
012    | Unless required by applicable law or agreed to in writing, software      |
013    | distributed under the License is distributed on an "AS IS" BASIS,        |
014    | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
015    | See the License for the specific language governing permissions and      |
016    | limitations under the License.                                           |
017    +--------------------------------------------------------------------------*/
018    package edu.tum.cs.commons.system;
019    
020    import edu.tum.cs.commons.string.StringUtils;
021    
022    /**
023     * A utility class for system diagnostics.
024     * 
025     * @author Florian Deissenboeck
026     * @author $Author: juergens $
027     * 
028     * @version $Revision: 26283 $
029     * @levd.rating GREEN Hash: 7D75860EF70E7B12D82C2A547F8D8FDB
030     */
031    public class DiagnosticUtils {
032        /**
033         * Returns a string describing the current memory status (max, free and used
034         * memory).
035         */
036        public static String getMemoryStatusDescription() {
037            StringBuilder status = new StringBuilder();
038            Runtime runtime = Runtime.getRuntime();
039            status.append("Memory status [kB]: ");
040            status.append("  Max: "
041                    + StringUtils.format(runtime.maxMemory() / 1024));
042            status.append("  Used: "
043                    + StringUtils.format(runtime.totalMemory() / 1024));
044            status.append("  Free: "
045                    + StringUtils.format((runtime.maxMemory() - runtime
046                            .totalMemory()) / 1024));
047            return status.toString();
048        }
049    }