| /* |
| * Copyright (C) 2020 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.mtp_perf; |
| |
| import android.app.Activity; |
| import android.content.Context; |
| import android.os.Bundle; |
| import android.os.ParcelFileDescriptor; |
| import android.os.ProxyFileDescriptorCallback; |
| import android.os.storage.StorageManager; |
| import android.system.ErrnoException; |
| |
| import androidx.test.InstrumentationRegistry; |
| import androidx.test.filters.LargeTest; |
| import androidx.test.runner.AndroidJUnit4; |
| |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| |
| import java.io.IOException; |
| |
| @RunWith(AndroidJUnit4.class) |
| @LargeTest |
| public class AppFusePerfTest { |
| static final int SIZE = 10 * 1024 * 1024; // 10MB |
| |
| @Test |
| public void testReadWriteFile() throws IOException { |
| final Context context = InstrumentationRegistry.getInstrumentation().getTargetContext(); |
| final StorageManager storageManager = context.getSystemService(StorageManager.class); |
| |
| 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 = storageManager.openProxyFileDescriptor( |
| ParcelFileDescriptor.MODE_READ_ONLY, new TestCallback()); |
| 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 = storageManager.openProxyFileDescriptor( |
| ParcelFileDescriptor.MODE_WRITE_ONLY | ParcelFileDescriptor.MODE_TRUNCATE, |
| new TestCallback()); |
| 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; |
| } |
| } |
| |
| 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 extends ProxyFileDescriptorCallback { |
| @Override |
| public long onGetSize() throws ErrnoException { |
| return SIZE; |
| } |
| |
| @Override |
| public int onRead(long offset, int size, byte[] data) throws ErrnoException { |
| return size; |
| } |
| |
| @Override |
| public int onWrite(long offset, int size, byte[] data) throws ErrnoException { |
| return size; |
| } |
| |
| @Override |
| public void onFsync() throws ErrnoException {} |
| |
| @Override |
| public void onRelease() {} |
| } |
| } |