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-rw-r--r--guava-tests/benchmark/com/google/common/collect/MinMaxPriorityQueueBenchmark.java154
1 files changed, 0 insertions, 154 deletions
diff --git a/guava-tests/benchmark/com/google/common/collect/MinMaxPriorityQueueBenchmark.java b/guava-tests/benchmark/com/google/common/collect/MinMaxPriorityQueueBenchmark.java
deleted file mode 100644
index 4c022cc..0000000
--- a/guava-tests/benchmark/com/google/common/collect/MinMaxPriorityQueueBenchmark.java
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- * Copyright (C) 2010 The Guava Authors
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package com.google.common.collect;
-
-import com.google.caliper.Param;
-import com.google.caliper.Runner;
-import com.google.caliper.SimpleBenchmark;
-import com.google.common.base.Function;
-import com.google.common.collect.ForwardingQueue;
-import com.google.common.collect.MinMaxPriorityQueue;
-import com.google.common.collect.Ordering;
-
-import java.math.BigInteger;
-import java.util.Comparator;
-import java.util.PriorityQueue;
-import java.util.Queue;
-import java.util.Random;
-
-/**
- * Benchmarks to compare performance of MinMaxPriorityQueue and PriorityQueue.
- *
- * @author Sverre Sundsdal
- */
-public class MinMaxPriorityQueueBenchmark extends SimpleBenchmark {
- @Param private ComparatorType comparator;
-
- // TODO(kevinb): add 1000000 back when we have the ability to throw
- // NotApplicableException in the expensive comparator case.
- @Param({"100", "10000"}) private int size;
-
- @Param private HeapType heap;
-
- private Queue<Integer> queue;
-
- private final Random random = new Random();
-
- @Override public void setUp() {
- queue = heap.create(comparator.get());
- for (int i = 0; i < size; i++) {
- queue.add(random.nextInt());
- }
- }
-
- public void timePollAndAdd(int reps) {
- for (int i = 0; i < reps; i++) {
- // TODO(kevinb): precompute random #s?
- queue.add(queue.poll() ^ random.nextInt());
- }
- }
-
- public void timePopulate(int reps) {
- for (int i = 0; i < reps; i++) {
- queue.clear();
- for (int j = 0; j < size; j++) {
- // TODO(kevinb): precompute random #s?
- queue.add(random.nextInt());
- }
- }
- }
-
- /**
- * Implementation of the InvertedMinMaxPriorityQueue which forwards all calls to
- * a MinMaxPriorityQueue, except poll, which is forwarded to pollMax. That way
- * we can benchmark pollMax using the same code that benchmarks poll.
- */
- static final class InvertedMinMaxPriorityQueue <T> extends ForwardingQueue<T> {
- MinMaxPriorityQueue<T> mmHeap;
- public InvertedMinMaxPriorityQueue(Comparator<T> comparator) {
- mmHeap = MinMaxPriorityQueue.orderedBy(comparator).create();
- }
-
- @Override
- protected Queue<T> delegate() {
- return mmHeap;
- }
-
- @Override
- public T poll() {
- return mmHeap.pollLast();
- }
-
- }
-
- public enum HeapType {
- MIN_MAX {
- @Override public Queue<Integer> create(Comparator<Integer> comparator) {
- return MinMaxPriorityQueue.orderedBy(comparator).create();
- }
- },
- PRIORITY_QUEUE {
- @Override public Queue<Integer> create(Comparator<Integer> comparator) {
- return new PriorityQueue<Integer>(11, comparator);
- }
- },
- INVERTED_MIN_MAX {
- @Override public Queue<Integer> create(Comparator<Integer> comparator) {
- return new InvertedMinMaxPriorityQueue<Integer>(comparator);
- }
- };
-
- public abstract Queue<Integer> create(Comparator<Integer> comparator);
- }
-
- /**
- * Does a CPU intensive operation on Integer and returns a BigInteger
- * Used to implement an ordering that spends a lot of cpu.
- */
- static class ExpensiveComputation implements Function<Integer, BigInteger> {
- @Override
- public BigInteger apply(Integer from) {
- BigInteger v = BigInteger.valueOf(from);
- // Math.sin is very slow for values outside 4*pi
- // Need to take absolute value to avoid inverting the value.
- for (double i = 0; i < 100; i += 20) {
- v = v.add(v.multiply(
- BigInteger.valueOf(
- ((Double) Math.abs(Math.sin(i) * 10.0)).longValue())));
- }
- return v;
- }
- }
-
- public enum ComparatorType {
- CHEAP {
- @Override public Comparator<Integer> get() {
- return Ordering.natural();
- }
- },
- EXPENSIVE {
- @Override public Comparator<Integer> get() {
- return Ordering.natural().onResultOf(new ExpensiveComputation());
- }
- };
- public abstract Comparator<Integer> get();
- }
-
- public static void main(String [] args) {
- Runner.main(MinMaxPriorityQueueBenchmark.class, args);
- }
-}