1 /* 2 * Copyright (c) 2014 Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 package org.openjdk.bench.java.security; 26 27 import java.security.DigestException; 28 import java.security.MessageDigest; 29 import java.security.NoSuchAlgorithmException; 30 import java.security.NoSuchProviderException; 31 import java.util.Random; 32 import java.util.concurrent.TimeUnit; 33 import org.openjdk.jmh.annotations.Benchmark; 34 import org.openjdk.jmh.annotations.Fork; 35 import org.openjdk.jmh.annotations.Measurement; 36 import org.openjdk.jmh.annotations.OutputTimeUnit; 37 import org.openjdk.jmh.annotations.Param; 38 import org.openjdk.jmh.annotations.Scope; 39 import org.openjdk.jmh.annotations.Setup; 40 import org.openjdk.jmh.annotations.State; 41 import org.openjdk.jmh.annotations.Warmup; 42 43 /** 44 * Tests various digester algorithms. Sets Fork parameters as these tests are 45 * rather allocation intensive. Reduced number of forks and iterations as 46 * benchmarks are stable. 47 */ 48 @State(Scope.Thread) 49 @OutputTimeUnit(TimeUnit.MILLISECONDS) 50 @Warmup(iterations = 5) 51 @Measurement(iterations = 10) 52 @Fork(jvmArgsAppend = {"-Xms1024m", "-Xmx1024m", "-Xmn768m", "-XX:+UseParallelGC"}, value = 5) 53 public class MessageDigests { 54 55 @Param({"64", "1024", "16384"}) 56 private int length; 57 58 @Param({"md2", "md5", "SHA-1", "SHA-224", "SHA-256", "SHA-384", "SHA-512"}) 59 private String digesterName; 60 61 @Param({"DEFAULT", "SUN"}) 62 protected String provider; 63 64 private byte[] inputBytes; 65 private MessageDigest digester; 66 67 @Setup 68 public void setup() throws NoSuchAlgorithmException, DigestException, NoSuchProviderException { 69 inputBytes = new byte[length]; 70 new Random(1234567890).nextBytes(inputBytes); 71 if ("DEFAULT".equals(provider)) { 72 digester = MessageDigest.getInstance(digesterName); 73 } else { 74 digester = MessageDigest.getInstance(digesterName, provider); 75 } 76 } 77 78 @Benchmark 79 public byte[] digest() throws DigestException { 80 return digester.digest(inputBytes); 81 } 82 }