| // Copyright 2024 The Bazel Authors. All rights reserved. |
| // |
| // 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.devtools.build.lib.vfs.bazel; |
| |
| import com.google.common.hash.HashCode; |
| import com.google.common.hash.HashFunction; |
| import com.google.common.hash.Hashing; |
| import java.security.SecureRandom; |
| import org.openjdk.jmh.annotations.Benchmark; |
| import org.openjdk.jmh.annotations.BenchmarkMode; |
| import org.openjdk.jmh.annotations.Level; |
| import org.openjdk.jmh.annotations.Mode; |
| import org.openjdk.jmh.annotations.Param; |
| import org.openjdk.jmh.annotations.Scope; |
| import org.openjdk.jmh.annotations.Setup; |
| import org.openjdk.jmh.annotations.State; |
| |
| @BenchmarkMode(Mode.Throughput) |
| @State(Scope.Benchmark) |
| public class BazelHashFunctionsBenchmark { |
| |
| static { |
| BazelHashFunctions.ensureRegistered(); |
| } |
| |
| public enum HashFunctionType { |
| BLAKE3(new Blake3HashFunction()), |
| SHA2_256(Hashing.sha256()); |
| |
| final HashFunction hashFunction; |
| |
| HashFunctionType(HashFunction hashFunction) { |
| this.hashFunction = hashFunction; |
| } |
| } |
| |
| public enum Size { |
| B, |
| KB, |
| MB, |
| GB; |
| |
| final int bytes; |
| |
| Size() { |
| bytes = 1 << (ordinal() * 10); |
| } |
| } |
| |
| @Param({"BLAKE3", "SHA2_256"}) |
| public HashFunctionType type; |
| |
| @Param({"B", "KB", "MB", "GB"}) |
| public Size size; |
| |
| private byte[] data; |
| |
| @Setup(Level.Iteration) |
| public void setup() { |
| data = new byte[size.bytes]; |
| new SecureRandom().nextBytes(data); |
| } |
| |
| @Benchmark |
| public HashCode hashBytesOneShot() { |
| return type.hashFunction.hashBytes(data); |
| } |
| } |