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