package com.example.basecore.util;
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/**
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*/
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import android.os.Handler;
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import android.os.Looper;
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import android.os.Process;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.FutureTask;
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/**
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* Helper methods to deal with threading related tasks.
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*/
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public class ThreadUtils {
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/**
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* Run the supplied Runnable on the main thread. The method will block until
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* the Runnable completes.
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*
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* @param r The Runnable to run.
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*/
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public static void runOnUiThreadBlocking(final Runnable r) {
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if (runningOnUiThread()) {
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r.run();
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} else {
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FutureTask<Void> task = new FutureTask<Void>(r, null);
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postOnUiThread(task);
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try {
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task.get();
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} catch (Exception e) {
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throw new RuntimeException("Exception occured while waiting for runnable", e);
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}
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}
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}
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/**
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* Run the supplied Callable on the main thread, wrapping any exceptions in
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* a RuntimeException. The method will block until the Callable completes.
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*
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* @param c The Callable to run
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* @return The result of the callable
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*/
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public static <T> T runOnUiThreadBlockingNoException(Callable<T> c) {
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try {
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return runOnUiThreadBlocking(c);
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} catch (ExecutionException e) {
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throw new RuntimeException("Error occured waiting for callable", e);
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}
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}
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/**
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* Run the supplied Callable on the main thread, The method will block until
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* the Callable completes.
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*
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* @param c The Callable to run
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* @return The result of the callable
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* @throws ExecutionException c's exception
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*/
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public static <T> T runOnUiThreadBlocking(Callable<T> c) throws ExecutionException {
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FutureTask<T> task = new FutureTask<T>(c);
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runOnUiThread(task);
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try {
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return task.get();
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} catch (InterruptedException e) {
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throw new RuntimeException("Interrupted waiting for callable", e);
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}
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}
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/**
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* Run the supplied FutureTask on the main thread. The method will block
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* only if the current thread is the main thread.
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*
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* @param task The FutureTask to run
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* @return The queried task (to aid inline construction)
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*/
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public static <T> FutureTask<T> runOnUiThread(FutureTask<T> task) {
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if (runningOnUiThread()) {
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task.run();
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} else {
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postOnUiThread(task);
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}
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return task;
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}
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/**
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* Run the supplied Callable on the main thread. The method will block
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* only if the current thread is the main thread.
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*
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* @param c The Callable to run
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* @return A FutureTask wrapping the callable to retrieve results
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*/
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public static <T> FutureTask<T> runOnUiThread(Callable<T> c) {
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return runOnUiThread(new FutureTask<T>(c));
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}
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/**
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* Run the supplied Runnable on the main thread. The method will block
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* only if the current thread is the main thread.
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*
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* @param r The Runnable to run
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*/
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public static void runOnUiThread(Runnable r) {
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if (runningOnUiThread()) {
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r.run();
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} else {
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LazyHolder.sUiThreadHandler.post(r);
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}
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}
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/**
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* Run the supplied Runnable on the main thread. The method will block
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* only if the current thread is the main thread.
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*
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* @param r The Runnable to run
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*/
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public static void runOnUiThreadDelayed(Runnable r,long millSeconds) {
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LazyHolder.sUiThreadHandler.postDelayed(r, millSeconds);
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}
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/**
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* Post the supplied FutureTask to run on the main thread. The method will
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* not block, even if called on the UI thread.
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*
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* @param task The FutureTask to run
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* @return The queried task (to aid inline construction)
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*/
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public static <T> FutureTask<T> postOnUiThread(FutureTask<T> task) {
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LazyHolder.sUiThreadHandler.post(task);
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return task;
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}
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/**
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* Post the supplied Runnable to run on the main thread. The method will
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* not block, even if called on the UI thread.
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*
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* @param task The Runnable to run
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*/
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public static void postOnUiThread(Runnable r) {
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LazyHolder.sUiThreadHandler.post(r);
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}
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public static void postOnUiThreadDelay(Runnable r, long delay) {
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LazyHolder.sUiThreadHandler.postDelayed(r, delay);
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}
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/**
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* 如果当前在主线程则立即执行r，否则post到主线程执行
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*/
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public static void dispatchOnUiThread(Runnable r) {
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if (Looper.getMainLooper() == Looper.myLooper()) {
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r.run();
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}
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else {
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postOnUiThread(r);
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}
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}
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/**
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* Asserts that the current thread is running on the main thread.
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*/
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public static void assertOnUiThread() {
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assert runningOnUiThread();
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}
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/**
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* @return true iff the current thread is the main (UI) thread.
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*/
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public static boolean runningOnUiThread() {
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return Looper.getMainLooper() == Looper.myLooper();
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}
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/**
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* Set thread priority to audio.
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*/
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// @CalledByNative
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public static void setThreadPriorityAudio(int tid) {
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Process.setThreadPriority(tid, Process.THREAD_PRIORITY_AUDIO);
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}
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public static Handler getUiThreadHandler() {
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return LazyHolder.sUiThreadHandler;
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}
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private static class LazyHolder {
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private static Handler sUiThreadHandler = new Handler(Looper.getMainLooper());
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}
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}
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