1 /* 2 * Copyright (C) 2010 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package examples; 18 19 import com.google.caliper.Benchmark; 20 import com.google.caliper.Param; 21 22 import java.security.MessageDigest; 23 24 /** 25 * Times creating new MessageDigest instances. 26 */ 27 public class MessageDigestCreationBenchmark { 28 // By default, just the "interesting ones". Also consider Adler32 and CRC32, 29 // but these are not guaranteed to be supported in all runtime environments. 30 @Param({"MD5", "SHA-1", "SHA-256", "SHA-512"}) 31 String algorithm; 32 time(int reps)33 @Benchmark void time(int reps) throws Exception { 34 // Change this to use a dummy if the results look suspicious. 35 for (int i = 0; i < reps; i++) { 36 MessageDigest.getInstance(algorithm); 37 } 38 } 39 } 40