| /* |
| * Copyright (C) 2017 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.server.wm.profileable; |
| |
| import static android.server.wm.profileable.Components.ProfileableAppActivity.COMMAND_WAIT_FOR_PROFILE_OUTPUT; |
| import static android.server.wm.profileable.Components.ProfileableAppActivity.OUTPUT_DIR; |
| import static android.server.wm.profileable.Components.ProfileableAppActivity.OUTPUT_NAME; |
| |
| import android.os.Bundle; |
| import android.os.FileObserver; |
| import android.os.SystemClock; |
| import android.server.wm.CommandSession.BasicTestActivity; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.util.concurrent.TimeUnit; |
| |
| public class ProfileableAppActivity extends BasicTestActivity { |
| private static final String TAG = ProfileableAppActivity.class.getSimpleName(); |
| |
| private final TraceFileObserver mTraceFileObserver = new TraceFileObserver(); |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| mUseTestJournal = false; |
| mPrintCallbackLog = true; |
| super.onCreate(savedInstanceState); |
| mTraceFileObserver.startWatching(); |
| } |
| |
| @Override |
| protected void onDestroy() { |
| super.onDestroy(); |
| mTraceFileObserver.stopWatching(); |
| } |
| |
| @Override |
| public void handleCommand(String command, Bundle data) { |
| if (COMMAND_WAIT_FOR_PROFILE_OUTPUT.equals(command)) { |
| mTraceFileObserver.waitForComplete(); |
| reply(command); |
| return; |
| } |
| |
| super.handleCommand(command, data); |
| } |
| |
| /** Monitor the close event of trace file. */ |
| private static class TraceFileObserver extends FileObserver { |
| /** |
| * The timeout for the close event of trace file. Although the trace file may take longer |
| * than 3 seconds, it is enough because the test only checks the first line of the file. |
| * Note that this timeout must be less than the value of |
| * {@link android.server.wm.CommandSession.ActivitySession.Response#TIMEOUT_MILLIS}. |
| * Otherwise the caller who sent {@link COMMAND_WAIT_FOR_PROFILE_OUTPUT} may get exception. |
| */ |
| private static final long TIMEOUT_MS = TimeUnit.SECONDS.toMillis(3); |
| private volatile boolean mDone; |
| |
| TraceFileObserver() { |
| super(new File(OUTPUT_DIR), CLOSE_WRITE); |
| } |
| |
| @Override |
| public synchronized void onEvent(int event, String path) { |
| Log.i(TAG, "onEvent path=" + path); |
| if (OUTPUT_NAME.equals(path)) { |
| mDone = true; |
| notifyAll(); |
| } |
| } |
| |
| /** Waits for a {@link CLOSE_WRITE} event. */ |
| synchronized void waitForComplete() { |
| if (!mDone) { |
| final long startTimeMs = SystemClock.elapsedRealtime(); |
| try { |
| wait(TIMEOUT_MS); |
| if (SystemClock.elapsedRealtime() - startTimeMs > TIMEOUT_MS) { |
| Log.e(TAG, "waitForComplete timeout"); |
| } |
| } catch (InterruptedException ignored) {} |
| } |
| mDone = false; |
| } |
| } |
| } |