| /* |
| * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| package gc.g1.plab.lib; |
| |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| import java.util.stream.Stream; |
| |
| public class PlabInfo { |
| |
| private final Map<String, Long> plabInfo; |
| |
| public PlabInfo() { |
| plabInfo = new HashMap<>(); |
| } |
| |
| private PlabInfo(Map<String, Long> map) { |
| plabInfo = new HashMap<>(map); |
| } |
| |
| /** |
| * Add key and value to underlying Map. |
| * @param key PLAB info field name |
| * @param value PLAB info value for field |
| */ |
| public void put(String key, long value) { |
| plabInfo.put(key, value); |
| } |
| |
| /** |
| * Get stream of Map.Entry representing underlying Map with PLAB information. |
| */ |
| public Stream<Map.Entry<String, Long>> entryStream() { |
| return plabInfo.entrySet().stream(); |
| } |
| |
| /** |
| * Returns the PlabInfo narrowed for the given fields only |
| * @param fields |
| * @return PlabInfo |
| */ |
| public PlabInfo filter(List<String> fields) { |
| return new PlabInfo(entryStream() |
| .filter(field -> fields.contains(field.getKey())) |
| .collect(Collectors.toMap( |
| item -> item.getKey(), |
| item -> item.getValue()) |
| ) |
| ); |
| } |
| |
| /** |
| * Checks if statistic contains expected fields. |
| * @param fields fields which should be in statistic |
| * @return true if all fields are in statistic, false otherwise |
| */ |
| public boolean checkFields(List<String> fields) { |
| for (String key : fields) { |
| if (!plabInfo.containsKey(key)) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Return a collection of the values. |
| * @return collection of values |
| */ |
| public Collection<Long> values() { |
| return plabInfo.values(); |
| } |
| |
| /** |
| * Get value for specified field. |
| * @param field |
| * @return long value which is contained in specified field |
| */ |
| public long get(String field) { |
| return plabInfo.get(field); |
| } |
| } |