1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package android.gameperformance; 17 18 import java.io.BufferedReader; 19 import java.io.FileWriter; 20 import java.io.IOException; 21 import java.io.InputStreamReader; 22 23 import android.app.Instrumentation; 24 import android.os.AsyncTask; 25 import android.os.ParcelFileDescriptor; 26 import android.util.Log; 27 28 /** 29 * Helper that runs atrace command for required duration and category. Results are read from 30 * the output of atrace and serialized to the provided file. We cannot use direct atrace to 31 * file because atrace is executed in UI automator context and analysis is done in test context. 32 * In last case output file is not accessible from the both contexts. 33 */ 34 public class ATraceRunner extends AsyncTask<Void, Integer, Boolean>{ 35 private final static String TAG = "ATraceRunner"; 36 37 // Report that atrace is done. 38 public interface Delegate { 39 public void onProcessed(boolean success); 40 } 41 42 private final Instrumentation mInstrumentation; 43 private final String mOutput; 44 private final int mTimeInSeconds; 45 private final String mCategory; 46 private final Delegate mDelegate; 47 48 public ATraceRunner(Instrumentation instrumentation, 49 String output, 50 int timeInSeconds, 51 String category, 52 Delegate delegate) { 53 mInstrumentation = instrumentation; 54 mOutput = output; 55 mTimeInSeconds = timeInSeconds; 56 mCategory = category; 57 mDelegate = delegate; 58 } 59 60 @Override 61 protected Boolean doInBackground(Void... params) { 62 BufferedReader bufferedReader = null; 63 FileWriter writer = null; 64 try { 65 // Run the command. 66 final String cmd = "atrace -t " + mTimeInSeconds + " " + mCategory; 67 Log.i(TAG, "Running atrace... " + cmd); 68 writer = new FileWriter(mOutput); 69 final ParcelFileDescriptor fd = 70 mInstrumentation.getUiAutomation().executeShellCommand(cmd); 71 bufferedReader = new BufferedReader( 72 new InputStreamReader(new ParcelFileDescriptor.AutoCloseInputStream(fd))); 73 String line; 74 while ((line = bufferedReader.readLine()) != null) { 75 writer.write(line); 76 writer.write("\n"); 77 } 78 Log.i(TAG, "Running atrace... DONE"); 79 return true; 80 } catch (IOException e) { 81 Log.i(TAG, "atrace failed", e); 82 return false; 83 } finally { 84 Utils.closeQuietly(bufferedReader); 85 Utils.closeQuietly(writer); 86 } 87 } 88 89 @Override 90 protected void onPostExecute(Boolean result) { 91 mDelegate.onProcessed(result); 92 } 93 94 } 95
