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/*
* Copyright (C) 2012 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 com.google.caliper.Runner;
import com.google.caliper.SimpleBenchmark;
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import java.util.Arrays;
import java.util.Collection;
public class ByteBufferScalarVersusVectorBenchmark extends SimpleBenchmark {
@Param private ByteBufferBenchmark.MyByteOrder byteOrder;
@Param({"true", "false"}) private boolean aligned;
@Param private ByteBufferBenchmark.MyBufferType bufferType;
public void timeManualByteBufferCopy(int reps) throws Exception {
ByteBuffer src = ByteBufferBenchmark.newBuffer(byteOrder, aligned, bufferType);
ByteBuffer dst = ByteBufferBenchmark.newBuffer(byteOrder, aligned, bufferType);
for (int rep = 0; rep < reps; ++rep) {
src.position(0);
dst.position(0);
for (int i = 0; i < 8192; ++i) {
dst.put(src.get());
}
}
}
public void timeByteBufferBulkGet(int reps) throws Exception {
ByteBuffer src = ByteBuffer.allocate(aligned ? 8192 : 8192 + 1);
byte[] dst = new byte[8192];
for (int rep = 0; rep < reps; ++rep) {
src.position(aligned ? 0 : 1);
src.get(dst, 0, dst.length);
}
}
public void timeDirectByteBufferBulkGet(int reps) throws Exception {
ByteBuffer src = ByteBuffer.allocateDirect(aligned ? 8192 : 8192 + 1);
byte[] dst = new byte[8192];
for (int rep = 0; rep < reps; ++rep) {
src.position(aligned ? 0 : 1);
src.get(dst, 0, dst.length);
}
}
}
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