52 lines
1.6 KiB
Java
52 lines
1.6 KiB
Java
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package android.telecom;
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import java.util.Collection;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* @hide
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*/
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public abstract class TimedEvent<T> {
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public abstract long getTime();
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public abstract T getKey();
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public static <T> Map<T, Double> averageTimings(Collection<? extends TimedEvent<T>> events) {
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HashMap<T, Integer> counts = new HashMap<>();
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HashMap<T, Double> result = new HashMap<>();
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for (TimedEvent<T> entry : events) {
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if (counts.containsKey(entry.getKey())) {
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counts.put(entry.getKey(), counts.get(entry.getKey()) + 1);
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result.put(entry.getKey(), result.get(entry.getKey()) + entry.getTime());
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} else {
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counts.put(entry.getKey(), 1);
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result.put(entry.getKey(), (double) entry.getTime());
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}
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}
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for (Map.Entry<T, Double> entry : result.entrySet()) {
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result.put(entry.getKey(), entry.getValue() / counts.get(entry.getKey()));
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}
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return result;
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}
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}
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