| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * 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 android.os; |
| |
| import static android.os.FileUtils.copyInternalSendfile; |
| import static android.os.FileUtils.copyInternalSplice; |
| import static android.os.FileUtils.copyInternalUserspace; |
| |
| import android.os.FileUtils.MemoryPipe; |
| |
| import com.google.caliper.BeforeExperiment; |
| import com.google.caliper.Param; |
| |
| import java.io.File; |
| import java.io.FileInputStream; |
| import java.io.FileOutputStream; |
| |
| public class FileUtilsBenchmark { |
| @Param({"32", "32000", "32000000"}) |
| private int mSize; |
| |
| private File mSrc; |
| private File mDest; |
| |
| private byte[] mData; |
| |
| @BeforeExperiment |
| protected void setUp() throws Exception { |
| mSrc = new File("/data/local/tmp/src"); |
| mDest = new File("/data/local/tmp/dest"); |
| |
| mData = new byte[mSize]; |
| |
| try (FileOutputStream os = new FileOutputStream(mSrc)) { |
| os.write(mData); |
| } |
| } |
| |
| public void timeRegularUserspace(int reps) throws Exception { |
| for (int i = 0; i < reps; i++) { |
| try (FileInputStream in = new FileInputStream(mSrc); |
| FileOutputStream out = new FileOutputStream(mDest)) { |
| copyInternalUserspace(in.getFD(), out.getFD(), null, null); |
| } |
| } |
| } |
| |
| public void timeRegularSendfile(int reps) throws Exception { |
| for (int i = 0; i < reps; i++) { |
| try (FileInputStream in = new FileInputStream(mSrc); |
| FileOutputStream out = new FileOutputStream(mDest)) { |
| copyInternalSendfile(in.getFD(), out.getFD(), null, null); |
| } |
| } |
| } |
| |
| public void timePipeSourceUserspace(int reps) throws Exception { |
| for (int i = 0; i < reps; i++) { |
| try (MemoryPipe in = MemoryPipe.createSource(mData); |
| FileOutputStream out = new FileOutputStream(mDest)) { |
| copyInternalUserspace(in.getFD(), out.getFD(), null, null); |
| } |
| } |
| } |
| |
| public void timePipeSourceSplice(int reps) throws Exception { |
| for (int i = 0; i < reps; i++) { |
| try (MemoryPipe in = MemoryPipe.createSource(mData); |
| FileOutputStream out = new FileOutputStream(mDest)) { |
| copyInternalSplice(in.getFD(), out.getFD(), null, null); |
| } |
| } |
| } |
| |
| public void timePipeSinkUserspace(int reps) throws Exception { |
| for (int i = 0; i < reps; i++) { |
| try (FileInputStream in = new FileInputStream(mSrc); |
| MemoryPipe out = MemoryPipe.createSink(mData)) { |
| copyInternalUserspace(in.getFD(), out.getFD(), null, null); |
| } |
| } |
| } |
| |
| public void timePipeSinkSplice(int reps) throws Exception { |
| for (int i = 0; i < reps; i++) { |
| try (FileInputStream in = new FileInputStream(mSrc); |
| MemoryPipe out = MemoryPipe.createSink(mData)) { |
| copyInternalSplice(in.getFD(), out.getFD(), null, null); |
| } |
| } |
| } |
| } |