| /* |
| * Copyright (C) 2014 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.io; |
| |
| import com.google.caliper.BeforeExperiment; |
| import com.google.caliper.Benchmark; |
| import com.google.caliper.Param; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.io.StringReader; |
| import java.io.StringWriter; |
| import java.util.Random; |
| |
| /** Benchmark for {@code BaseEncoding} performance. */ |
| public class BaseEncodingBenchmark { |
| private static final int INPUTS_COUNT = 0x1000; |
| private static final int INPUTS_MASK = 0xFFF; |
| |
| enum EncodingOption { |
| BASE64(BaseEncoding.base64()), |
| BASE64_URL(BaseEncoding.base64Url()), |
| BASE32(BaseEncoding.base32()), |
| BASE32_HEX(BaseEncoding.base32Hex()), |
| BASE16(BaseEncoding.base16()); |
| |
| final BaseEncoding encoding; |
| |
| EncodingOption(BaseEncoding encoding) { |
| this.encoding = encoding; |
| } |
| } |
| |
| @Param EncodingOption encoding; |
| |
| @Param({"10", "100", "10000"}) |
| int n; |
| |
| private final byte[][] encodingInputs = new byte[INPUTS_COUNT][]; |
| private final String[] decodingInputs = new String[INPUTS_COUNT]; |
| |
| @BeforeExperiment |
| public void setUp() { |
| Random rng = new Random(); |
| for (int i = 0; i < encodingInputs.length; i++) { |
| encodingInputs[i] = new byte[n]; |
| rng.nextBytes(encodingInputs[i]); |
| decodingInputs[i] = encoding.encoding.encode(encodingInputs[i]); |
| } |
| } |
| |
| @Benchmark |
| public int encode(int reps) { |
| int tmp = 0; |
| for (int i = 0; i < reps; i++) { |
| tmp += System.identityHashCode(encoding.encoding.encode(encodingInputs[i & INPUTS_MASK])); |
| } |
| return tmp; |
| } |
| |
| @Benchmark |
| public int decode(int reps) { |
| int tmp = 0; |
| for (int i = 0; i < reps; i++) { |
| tmp += System.identityHashCode(encoding.encoding.decode(decodingInputs[i & INPUTS_MASK])); |
| } |
| return tmp; |
| } |
| |
| @Benchmark |
| public int encodingStream(int reps) throws IOException { |
| int tmp = 0; |
| for (int i = 0; i < reps; i++) { |
| StringWriter target = new StringWriter(2 * n); |
| OutputStream encodingStream = encoding.encoding.encodingStream(target); |
| encodingStream.write(encodingInputs[i & INPUTS_MASK]); |
| encodingStream.close(); |
| tmp += target.getBuffer().length(); |
| } |
| return tmp; |
| } |
| |
| @Benchmark |
| public int decodingStream(int reps) throws IOException { |
| int tmp = 0; |
| byte[] target = new byte[n]; |
| for (int i = 0; i < reps; i++) { |
| StringReader source = new StringReader(decodingInputs[i & INPUTS_MASK]); |
| InputStream decodingStream = encoding.encoding.decodingStream(source); |
| decodingStream.read(target); |
| decodingStream.close(); |
| tmp += target[0]; |
| } |
| return tmp; |
| } |
| } |