1 /* 2 * Copyright (C) 2017 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.os; 18 19 import android.annotation.NonNull; 20 21 import com.android.internal.util.Preconditions; 22 23 import java.util.concurrent.Executor; 24 import java.util.concurrent.RejectedExecutionException; 25 26 /** 27 * An adapter {@link Executor} that posts all executed tasks onto the given 28 * {@link Handler}. 29 * 30 * @hide 31 */ 32 public class HandlerExecutor implements Executor { 33 private final Handler mHandler; 34 35 public HandlerExecutor(@NonNull Handler handler) { 36 mHandler = Preconditions.checkNotNull(handler); 37 } 38 39 @Override 40 public void execute(Runnable command) { 41 if (!mHandler.post(command)) { 42 throw new RejectedExecutionException(mHandler + " is shutting down"); 43 } 44 } 45 } 46
