197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes/* 297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Copyright (C) 2012 Google Inc. 397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * 497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Licensed under the Apache License, Version 2.0 (the "License"); 597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * you may not use this file except in compliance with the License. 697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * You may obtain a copy of the License at 797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * 897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * http://www.apache.org/licenses/LICENSE-2.0 997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * 1097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * Unless required by applicable law or agreed to in writing, software 1197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * distributed under the License is distributed on an "AS IS" BASIS, 1297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * See the License for the specific language governing permissions and 1497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes * limitations under the License. 1597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes */ 1697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 1797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughespackage benchmarks.regression; 1897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 1997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport com.google.caliper.Param; 2097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport com.google.caliper.Runner; 2197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport com.google.caliper.SimpleBenchmark; 2297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 2397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport java.io.*; 2497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport java.nio.*; 2597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport java.nio.channels.*; 2697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport java.util.Arrays; 2797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughesimport java.util.Collection; 2897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 2997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughespublic class ByteBufferScalarVersusVectorBenchmark extends SimpleBenchmark { 3097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes @Param private ByteBufferBenchmark.MyByteOrder byteOrder; 3197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes @Param({"true", "false"}) private boolean aligned; 3297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes @Param private ByteBufferBenchmark.MyBufferType bufferType; 3397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 3497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes public void timeManualByteBufferCopy(int reps) throws Exception { 3597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes ByteBuffer src = ByteBufferBenchmark.newBuffer(byteOrder, aligned, bufferType); 3697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes ByteBuffer dst = ByteBufferBenchmark.newBuffer(byteOrder, aligned, bufferType); 3797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes for (int rep = 0; rep < reps; ++rep) { 3897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes src.position(0); 3997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes dst.position(0); 4097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes for (int i = 0; i < 8192; ++i) { 4197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes dst.put(src.get()); 4297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 4397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 4497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 4597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 4697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes public void timeByteBufferBulkGet(int reps) throws Exception { 4797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes ByteBuffer src = ByteBuffer.allocate(aligned ? 8192 : 8192 + 1); 4897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes byte[] dst = new byte[8192]; 4997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes for (int rep = 0; rep < reps; ++rep) { 5097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes src.position(aligned ? 0 : 1); 5197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes src.get(dst, 0, dst.length); 5297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 5397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 5497aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes 5597aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes public void timeDirectByteBufferBulkGet(int reps) throws Exception { 5697aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes ByteBuffer src = ByteBuffer.allocateDirect(aligned ? 8192 : 8192 + 1); 5797aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes byte[] dst = new byte[8192]; 5897aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes for (int rep = 0; rep < reps; ++rep) { 5997aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes src.position(aligned ? 0 : 1); 6097aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes src.get(dst, 0, dst.length); 6197aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 6297aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes } 6397aba27f961a5a6f37dcaf7f455df371e250ede3Elliott Hughes} 64