| /* |
| * Copyright (C) 2010 Google Inc. |
| * |
| * 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 benchmarks.regression; |
| |
| import com.google.caliper.Param; |
| import java.nio.ByteBuffer; |
| import java.security.MessageDigest; |
| |
| public class MessageDigestBenchmark { |
| |
| private static final int DATA_SIZE = 8192; |
| private static final byte[] DATA = new byte[DATA_SIZE]; |
| static { |
| for (int i = 0; i < DATA_SIZE; i++) { |
| DATA[i] = (byte)i; |
| } |
| } |
| |
| private static final int LARGE_DATA_SIZE = 256 * 1024; |
| private static final byte[] LARGE_DATA = new byte[LARGE_DATA_SIZE]; |
| static { |
| for (int i = 0; i < LARGE_DATA_SIZE; i++) { |
| LARGE_DATA[i] = (byte)i; |
| } |
| } |
| |
| private static final ByteBuffer SMALL_BUFFER = ByteBuffer.wrap(DATA); |
| private static final ByteBuffer SMALL_DIRECT_BUFFER = ByteBuffer.allocateDirect(DATA_SIZE); |
| static { |
| SMALL_DIRECT_BUFFER.put(DATA); |
| SMALL_DIRECT_BUFFER.flip(); |
| } |
| |
| private static final ByteBuffer LARGE_BUFFER = ByteBuffer.wrap(LARGE_DATA); |
| private static final ByteBuffer LARGE_DIRECT_BUFFER = |
| ByteBuffer.allocateDirect(LARGE_DATA_SIZE); |
| static { |
| LARGE_DIRECT_BUFFER.put(LARGE_DATA); |
| LARGE_DIRECT_BUFFER.flip(); |
| } |
| |
| @Param private Algorithm algorithm; |
| |
| public enum Algorithm { MD5, SHA1, SHA256, SHA384, SHA512 }; |
| |
| @Param private Provider provider; |
| |
| public enum Provider { AndroidOpenSSL, BC }; |
| |
| public void time(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| digest.update(DATA, 0, DATA_SIZE); |
| digest.digest(); |
| } |
| } |
| |
| public void timeLargeArray(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| digest.update(LARGE_DATA, 0, LARGE_DATA_SIZE); |
| digest.digest(); |
| } |
| } |
| |
| public void timeSmallChunkOfLargeArray(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| digest.update(LARGE_DATA, LARGE_DATA_SIZE / 2, DATA_SIZE); |
| digest.digest(); |
| } |
| } |
| |
| public void timeSmallByteBuffer(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| SMALL_BUFFER.position(0); |
| SMALL_BUFFER.limit(SMALL_BUFFER.capacity()); |
| digest.update(SMALL_BUFFER); |
| digest.digest(); |
| } |
| } |
| |
| public void timeSmallDirectByteBuffer(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| SMALL_DIRECT_BUFFER.position(0); |
| SMALL_DIRECT_BUFFER.limit(SMALL_DIRECT_BUFFER.capacity()); |
| digest.update(SMALL_DIRECT_BUFFER); |
| digest.digest(); |
| } |
| } |
| |
| public void timeLargeByteBuffer(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| LARGE_BUFFER.position(0); |
| LARGE_BUFFER.limit(LARGE_BUFFER.capacity()); |
| digest.update(LARGE_BUFFER); |
| digest.digest(); |
| } |
| } |
| |
| public void timeLargeDirectByteBuffer(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| LARGE_DIRECT_BUFFER.position(0); |
| LARGE_DIRECT_BUFFER.limit(LARGE_DIRECT_BUFFER.capacity()); |
| digest.update(LARGE_DIRECT_BUFFER); |
| digest.digest(); |
| } |
| } |
| |
| public void timeSmallChunkOfLargeByteBuffer(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| LARGE_BUFFER.position(LARGE_BUFFER.capacity() / 2); |
| LARGE_BUFFER.limit(LARGE_BUFFER.position() + DATA_SIZE); |
| digest.update(LARGE_BUFFER); |
| digest.digest(); |
| } |
| } |
| |
| public void timeSmallChunkOfLargeDirectByteBuffer(int reps) throws Exception { |
| for (int i = 0; i < reps; ++i) { |
| MessageDigest digest = MessageDigest.getInstance(algorithm.toString(), |
| provider.toString()); |
| LARGE_DIRECT_BUFFER.position(LARGE_DIRECT_BUFFER.capacity() / 2); |
| LARGE_DIRECT_BUFFER.limit(LARGE_DIRECT_BUFFER.position() + DATA_SIZE); |
| digest.update(LARGE_DIRECT_BUFFER); |
| digest.digest(); |
| } |
| } |
| } |