84 lines
2.8 KiB
Java
84 lines
2.8 KiB
Java
/*
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* Copyright 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.pump.concurrent;
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import android.os.Handler;
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import android.os.Looper;
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import androidx.annotation.AnyThread;
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import androidx.annotation.NonNull;
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import java.util.concurrent.Executor;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.LinkedBlockingQueue;
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import java.util.concurrent.ThreadFactory;
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import java.util.concurrent.TimeUnit;
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@AnyThread
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public final class Executors {
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private Executors() { }
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private static final Executor DIRECT_EXECUTOR = Runnable::run;
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private static final Executor MAIN_THREAD_EXECUTOR = new Executor() {
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private final Handler mHandler = new Handler(Looper.getMainLooper());
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@Override
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public void execute(@NonNull Runnable command) {
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if (mHandler.getLooper() != Looper.myLooper()) {
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mHandler.post(command);
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} else {
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command.run();
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}
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}
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};
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private static final Executor UI_THREAD_EXECUTOR = MAIN_THREAD_EXECUTOR;
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public static @NonNull Executor directExecutor() {
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return DIRECT_EXECUTOR;
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}
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public static @NonNull Executor mainThreadExecutor() {
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return MAIN_THREAD_EXECUTOR;
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}
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public static @NonNull Executor uiThreadExecutor() {
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return UI_THREAD_EXECUTOR;
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}
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public static @NonNull ExecutorService newFixedUniqueThreadPool(int nThreads) {
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return new UniqueExecutor(nThreads, nThreads, 0, TimeUnit.MILLISECONDS,
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new LinkedBlockingQueue<>());
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}
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public static @NonNull ExecutorService newFixedUniqueThreadPool(int nThreads,
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@NonNull ThreadFactory threadFactory) {
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return new UniqueExecutor(nThreads, nThreads, 0, TimeUnit.MILLISECONDS,
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new LinkedBlockingQueue<>(), threadFactory);
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}
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public static @NonNull ExecutorService newCachedUniqueThreadPool() {
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return new UniqueExecutor(0, Integer.MAX_VALUE, 60, TimeUnit.SECONDS,
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new LinkedBlockingQueue<>());
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}
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public static @NonNull ExecutorService newCachedUniqueThreadPool(
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@NonNull ThreadFactory threadFactory) {
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return new UniqueExecutor(0, Integer.MAX_VALUE, 60, TimeUnit.SECONDS,
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new LinkedBlockingQueue<>(), threadFactory);
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}
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}
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