| /* |
| * Copyright (C) 2016 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.io.File; |
| import java.io.IOException; |
| import java.io.RandomAccessFile; |
| import java.nio.ByteBuffer; |
| import java.nio.ByteOrder; |
| import java.nio.CharBuffer; |
| import java.nio.DoubleBuffer; |
| import java.nio.FloatBuffer; |
| import java.nio.IntBuffer; |
| import java.nio.LongBuffer; |
| import java.nio.ShortBuffer; |
| import java.nio.channels.FileChannel; |
| |
| public class ByteBufferBulkBenchmark { |
| @Param({"true", "false"}) private boolean aligned; |
| |
| |
| enum MyBufferType { |
| DIRECT, HEAP, MAPPED |
| } |
| @Param private MyBufferType srcBufferType; |
| @Param private MyBufferType dataBufferType; |
| |
| @Param({"4096", "1232896"}) private int bufferSize; |
| |
| public static ByteBuffer newBuffer(boolean aligned, MyBufferType bufferType, int bsize) throws IOException { |
| int size = aligned ? bsize : bsize + 8 + 1; |
| ByteBuffer result = null; |
| switch (bufferType) { |
| case DIRECT: |
| result = ByteBuffer.allocateDirect(size); |
| break; |
| case HEAP: |
| result = ByteBuffer.allocate(size); |
| break; |
| case MAPPED: |
| File tmpFile = File.createTempFile("MappedByteBufferTest", ".tmp"); |
| tmpFile.createNewFile(); |
| tmpFile.deleteOnExit(); |
| RandomAccessFile raf = new RandomAccessFile(tmpFile, "rw"); |
| raf.setLength(size); |
| FileChannel fc = raf.getChannel(); |
| result = fc.map(FileChannel.MapMode.READ_WRITE, 0, fc.size()); |
| break; |
| } |
| result.position(aligned ? 0 : 1); |
| return result; |
| } |
| |
| public void timeByteBuffer_putByteBuffer(int reps) throws Exception { |
| ByteBuffer src = ByteBufferBulkBenchmark.newBuffer(aligned, srcBufferType, bufferSize); |
| ByteBuffer data = ByteBufferBulkBenchmark.newBuffer(aligned, dataBufferType, bufferSize); |
| for (int rep = 0; rep < reps; ++rep) { |
| src.position(aligned ? 0 : 1); |
| data.position(aligned ? 0 : 1 ); |
| src.put(data); |
| } |
| } |
| |
| } |