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 17 package android.uirendering.cts.util; 18 19 import static org.junit.Assert.assertFalse; 20 import static org.junit.Assert.assertTrue; 21 22 import android.view.animation.AnimationUtils; 23 24 import java.util.concurrent.ExecutionException; 25 import java.util.concurrent.ExecutorService; 26 import java.util.concurrent.Executors; 27 import java.util.concurrent.Future; 28 29 public class MockVsyncHelper { 30 31 private static ExecutorService sExecutor = Executors.newSingleThreadExecutor(); 32 private static Future<Thread> sExecutorThread; 33 34 static { 35 // We can't wait on the future here because the lambda cannot be executed until 36 // the class has finished loading 37 sExecutorThread = sExecutor.submit(() -> { 38 AnimationUtils.lockAnimationClock(16); 39 return Thread.currentThread(); 40 }); 41 } 42 isOnExecutorThread()43 private static boolean isOnExecutorThread() { 44 try { 45 return Thread.currentThread().equals(sExecutorThread.get()); 46 } catch (InterruptedException | ExecutionException e) { 47 throw new RuntimeException(e); 48 } 49 } 50 nextFrame()51 public static void nextFrame() { 52 assertTrue("nextFrame() must be called inside #unOnVsyncThread block", 53 isOnExecutorThread()); 54 AnimationUtils.lockAnimationClock(AnimationUtils.currentAnimationTimeMillis() + 16); 55 } 56 runOnVsyncThread(CallableVoid callable)57 public static void runOnVsyncThread(CallableVoid callable) { 58 assertFalse("Cannot runOnVsyncThread inside #runOnVsyncThread block", 59 isOnExecutorThread()); 60 try { 61 sExecutor.submit(() -> { 62 callable.call(); 63 return (Void) null; 64 }).get(); 65 } catch (InterruptedException e) { 66 Thread.currentThread().interrupt(); 67 } catch (ExecutionException e) { 68 SneakyThrow.sneakyThrow(e.getCause() != null ? e.getCause() : e); 69 } 70 } 71 72 public interface CallableVoid { call()73 void call() throws Exception; 74 } 75 } 76