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Diffstat (limited to 'guava-tests/benchmark/com/google/common/collect/ImmutableListCreationBenchmark.java')
-rw-r--r-- | guava-tests/benchmark/com/google/common/collect/ImmutableListCreationBenchmark.java | 92 |
1 files changed, 0 insertions, 92 deletions
diff --git a/guava-tests/benchmark/com/google/common/collect/ImmutableListCreationBenchmark.java b/guava-tests/benchmark/com/google/common/collect/ImmutableListCreationBenchmark.java deleted file mode 100644 index 77ae7b1..0000000 --- a/guava-tests/benchmark/com/google/common/collect/ImmutableListCreationBenchmark.java +++ /dev/null @@ -1,92 +0,0 @@ -/* - * Copyright (C) 2012 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 java.util.List; - -/** - * Benchmark for various ways to create an {@code ImmutableList}. - * - * @author Louis Wasserman - */ -public class ImmutableListCreationBenchmark extends SimpleBenchmark { - - @Param({"10", "1000", "1000000"}) - int size; - - private static final Object OBJECT = new Object(); - - public int timeBuilderAdd(int reps) { - int size = this.size; - int dummy = 0; - for (int rep = 0; rep < reps; rep++) { - ImmutableList.Builder<Object> builder = ImmutableList.builder(); - for (int i = 0; i < size; i++) { - builder.add(OBJECT); - } - dummy += builder.build().size(); - } - return dummy; - } - - public int timePreSizedBuilderAdd(int reps) { - int size = this.size; - int dummy = 0; - for (int rep = 0; rep < reps; rep++) { - ImmutableList.Builder<Object> builder = new ImmutableList.Builder<Object>(size); - for (int i = 0; i < size; i++) { - builder.add(OBJECT); - } - dummy += builder.build().size(); - } - return dummy; - } - - public int timeCopyArrayList(int reps) { - int size = this.size; - int dummy = 0; - for (int rep = 0; rep < reps; rep++) { - List<Object> builder = Lists.newArrayList(); - for (int i = 0; i < size; i++) { - builder.add(OBJECT); - } - dummy += ImmutableList.copyOf(builder).size(); - } - return dummy; - } - - public int timeCopyPreSizedArrayList(int reps) { - int size = this.size; - int tmp = 0; - for (int rep = 0; rep < reps; rep++) { - List<Object> builder = Lists.newArrayListWithCapacity(size); - for (int i = 0; i < size; i++) { - builder.add(OBJECT); - } - tmp += ImmutableList.copyOf(builder).size(); - } - return tmp; - } - - public static void main(String[] args) { - Runner.main(ImmutableListCreationBenchmark.class, args); - } -} |