/*
|
* 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 java.nio.ByteBuffer;
|
|
public class ByteBufferScalarVersusVectorBenchmark {
|
@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);
|
}
|
}
|
}
|
