001/*
002 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation.
008 *
009 * This code is distributed in the hope that it will be useful, but WITHOUT
010 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
011 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
012 * version 2 for more details (a copy is included in the LICENSE file that
013 * accompanied this code).
014 *
015 * You should have received a copy of the GNU General Public License version
016 * 2 along with this work; if not, write to the Free Software Foundation,
017 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
018 *
019 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
020 * or visit www.oracle.com if you need additional information or have any
021 * questions.
022 */
023package com.oracle.graal.debug.internal;
024
025import java.util.*;
026
027import com.oracle.graal.debug.*;
028
029public class DebugHistogramImpl implements DebugHistogram {
030
031    private final String name;
032    private HashMap<Object, CountedValue> map = new HashMap<>();
033
034    public DebugHistogramImpl(String name) {
035        this.name = name;
036    }
037
038    public void add(Object value) {
039        CountedValue cv = map.get(value);
040        if (cv == null) {
041            map.put(value, new CountedValue(1, value));
042        } else {
043            cv.inc();
044        }
045    }
046
047    public void add(Object value, long count) {
048        CountedValue cv = map.get(value);
049        if (cv == null) {
050            map.put(value, new CountedValue(count, value));
051        } else {
052            cv.add(count);
053        }
054    }
055
056    @Override
057    public String getName() {
058        return name;
059    }
060
061    public List<CountedValue> getValues() {
062        ArrayList<CountedValue> res = new ArrayList<>(map.values());
063        Collections.sort(res);
064        return res;
065    }
066}