| /* |
| * Copyright (C) 2016 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 com.android.mtp; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.os.Bundle; |
| import android.os.ParcelFileDescriptor; |
| import android.os.storage.StorageManager; |
| import android.system.ErrnoException; |
| import android.system.Os; |
| import android.support.test.filters.LargeTest; |
| import android.support.test.InstrumentationRegistry; |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.util.Arrays; |
| import libcore.io.IoUtils; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| import org.junit.Test; |
| |
| @RunWith(JUnit4.class) |
| public class AppFusePerfTest { |
| @Test |
| @LargeTest |
| public void testReadWriteFile() throws IOException { |
| final Context context = InstrumentationRegistry.getInstrumentation().getTargetContext(); |
| final StorageManager storageManager = context.getSystemService(StorageManager.class); |
| final int INODE = 10; |
| final int SIZE = 10 * 1024 * 1024; // 10MB |
| final AppFuse appFuse = new AppFuse( |
| "test", |
| new TestCallback() { |
| @Override |
| public long getFileSize(int inode) throws FileNotFoundException { |
| if (inode != INODE) { |
| throw new FileNotFoundException(); |
| } |
| return SIZE; |
| } |
| |
| @Override |
| public long readObjectBytes(int inode, long offset, long size, byte[] bytes) |
| throws IOException { |
| return size; |
| } |
| |
| @Override |
| public int writeObjectBytes( |
| long fileHandle, int inode, long offset, int size, byte[] bytes) { |
| return size; |
| } |
| }); |
| |
| appFuse.mount(storageManager); |
| |
| final byte[] bytes = new byte[SIZE]; |
| final int SAMPLES = 100; |
| final double[] readTime = new double[SAMPLES]; |
| final double[] writeTime = new double[SAMPLES]; |
| |
| for (int i = 0; i < SAMPLES; i++) { |
| final ParcelFileDescriptor fd = appFuse.openFile( |
| INODE, |
| ParcelFileDescriptor.MODE_READ_ONLY); |
| try (final ParcelFileDescriptor.AutoCloseInputStream stream = |
| new ParcelFileDescriptor.AutoCloseInputStream(fd)) { |
| final long startTime = System.nanoTime(); |
| stream.read(bytes); |
| readTime[i] = (System.nanoTime() - startTime) / 1000.0 / 1000.0; |
| } |
| |
| } |
| |
| for (int i = 0; i < SAMPLES; i++) { |
| final ParcelFileDescriptor fd = appFuse.openFile( |
| INODE, |
| ParcelFileDescriptor.MODE_WRITE_ONLY | ParcelFileDescriptor.MODE_TRUNCATE); |
| try (final ParcelFileDescriptor.AutoCloseOutputStream stream = |
| new ParcelFileDescriptor.AutoCloseOutputStream(fd)) { |
| final long startTime = System.nanoTime(); |
| stream.write(bytes); |
| writeTime[i] = (System.nanoTime() - startTime) / 1000.0 / 1000.0; |
| } |
| } |
| |
| appFuse.close(); |
| |
| double readAverage = 0; |
| double writeAverage = 0; |
| double readSquaredAverage = 0; |
| double writeSquaredAverage = 0; |
| for (int i = 0; i < SAMPLES; i++) { |
| readAverage += readTime[i]; |
| writeAverage += writeTime[i]; |
| readSquaredAverage += readTime[i] * readTime[i]; |
| writeSquaredAverage += writeTime[i] * writeTime[i]; |
| } |
| |
| readAverage /= SAMPLES; |
| writeAverage /= SAMPLES; |
| readSquaredAverage /= SAMPLES; |
| writeSquaredAverage /= SAMPLES; |
| |
| final Bundle results = new Bundle(); |
| results.putDouble("readAverage", readAverage); |
| results.putDouble("readStandardDeviation", |
| Math.sqrt(readSquaredAverage - readAverage * readAverage)); |
| results.putDouble("writeAverage", writeAverage); |
| results.putDouble("writeStandardDeviation", |
| Math.sqrt(writeSquaredAverage - writeAverage * writeAverage)); |
| InstrumentationRegistry.getInstrumentation().sendStatus(Activity.RESULT_OK, results); |
| } |
| |
| private static class TestCallback implements AppFuse.Callback { |
| @Override |
| public long getFileSize(int inode) throws FileNotFoundException { |
| throw new FileNotFoundException(); |
| } |
| |
| @Override |
| public long readObjectBytes(int inode, long offset, long size, byte[] bytes) |
| throws IOException { |
| throw new IOException(); |
| } |
| |
| @Override |
| public int writeObjectBytes(long fileHandle, int inode, long offset, int size, byte[] bytes) |
| throws IOException { |
| throw new IOException(); |
| } |
| |
| @Override |
| public void flushFileHandle(long fileHandle) throws IOException {} |
| |
| @Override |
| public void closeFileHandle(long fileHandle) {} |
| } |
| } |