CoroutineContext是类似于Map的,每个Element有自己的Key,这是为了保证每个CoroutineContext对象中每个Key只能有一个Element对象。可以把CoroutineContext看成是Map,因此可以使用[]来获取Key对应的Element,如取Job,可以用context[Job],取名字时可以用context[CoroutineName]等。 具体Element有四种: Job:协程的句柄,或者说唯一...
CoroutineContext是类似于Map的,每个Element有自己的Key,这是为了保证每个CoroutineContext对象中每个Key只能有一个Element对象。可以把CoroutineContext看成是Map,因此可以使用[]**来获取Key对应的Element,如取Job,可以用context[Job],取名字时可以用context[CoroutineName]等。 具体Element有四种: Job:协程的句柄,或者说...
= "For tests Dispatchers.setMain from kotlinx-coroutines-test module can be used" override val loadPriority: Int get() = Int.MAX_VALUE / 2 } 如果使用的是其他调度,则运行,或者说“寄宿”在线程池上。这个线程池可以是kotlin协程库内部维护的(关键字ExecutorCoroutineDispatcher),当然也可以是开发者自...
CoroutineContext是类似于Map的,每个Element有自己的Key,这是为了保证每个CoroutineContext对象中每个Key只能有一个Element对象。可以把CoroutineContext看成是Map,因此可以使用[]**来获取Key对应的Element,如取Job,可以用context[Job],取名字时可以用context[CoroutineName]等。 具体Element有四种: Job:协程的句柄,或者说...
// 为了模拟出效果,特意使用只有一个线程的线程池来当DispatcherMainScope().launch(Executors.newFixedThreadPool(1).asCoroutineDispatcher()) {val result = withContext(Dispatchers.IO) {Thread.sleep(10_000)println("I am running in ${Thread.currentThread()}")"Hello coroutines"}println("I am running...
Kotlin has several implementations ofCoroutineDispatcher, and there are some internal singleton instances:DefaultScheduler,CommonPool,DefaultExecutor, andUnconfined. To pass the predefined scheduler, we can usekotlinx.coroutines.Dispatchersvalues:
In this tutorial, we’ll explore the basic concepts of concurrency and how different programming languages address them, particularly Java and Kotlin. We’ll focus primarily on the light-weight concurrency models and compare coroutines in Kotlin with the upcoming proposals in Java as part of Projec...
timeSource.unTrackTask() DefaultExecutor.execute(block) } 如果 pool 为空,则调用...即使调用了cancel() 或者 cancelAndJoin()。...]. */ @Deprecated("Replace with top-level coroutineContext", replaceWith = ReplaceWith...("coroutineContext", imports = ["kotlin.coroutines.experimental.coroutineConte...
(baseSslFactory, updatedSslFactory); }; // initial update of ssl material to replace the dummies sslUpdater.run(); // update ssl material every hour Executors.newSingleThreadScheduledExecutor().scheduleAtFixedRate(sslUpdater, 1, 1, TimeUnit.HOURS); HttpResponse<String> response = httpClient.send...
//TestActivity.java MainScope().launch { val result = withContext(Dispatchers.IO) { Thread.sleep(10_000) println("I am running in ${Thread.currentThread()}") "Hello coroutines" } println("I am running in ${Thread.currentThread()} result is $result") } 打印结果如下,我们看到在子线程...