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