/*
|
* 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);
|
}
|
}
|
|
}
|
