executioncontext

来源： https://stackoverflow.com/questions/37909543/are-dead-threads-replaced-in-an-executioncontext-and-or-java-thread-pool

来源： https://stackoverflow.com/questions/37909543/are-dead-threads-replaced-in-an-executioncontext-and-or-java-thread-pool

来源： https://stackoverflow.com/questions/37909543/are-dead-threads-replaced-in-an-executioncontext-and-or-java-thread-pool

问题 When I make a future , or apply methods like onSuccess and map , I can specify ExecutionContext for them. For example, val f = future { // code } executionContext f.map(someFunction)(executionContext) f onSuccess { // code } executionContext However, if I use a for-comprehension of future, how can I specify ExecutionContext for the yield part? for { f <- future1 g <- future2 } yield { // code to be executed after future1 onSuccess and future2 onSuccess // What ExecutionContext runs this code?

问题 When I make a future , or apply methods like onSuccess and map , I can specify ExecutionContext for them. For example, val f = future { // code } executionContext f.map(someFunction)(executionContext) f onSuccess { // code } executionContext However, if I use a for-comprehension of future, how can I specify ExecutionContext for the yield part? for { f <- future1 g <- future2 } yield { // code to be executed after future1 onSuccess and future2 onSuccess // What ExecutionContext runs this code?

问题 I have this situation: method a: an implicit ec is created method a: calls another method in a Future, i.e Future(anotherMethod) . anotherMethod , and all its subsequent calls no longer have the ec from method a in scope. Example code: class Foo { private implicit val ec: ExecutionContextExecutor = ExecutionContext.fromExecutor(Executors.newFixedThreadPool(Runtime.getRuntime.availableProcessors())) private val anotherClass = new Bar() def methodA() = Future(anotherClass.anotherMethod()) } I'm

问题 I am writing what should be a fairly straightforward firefox extension. But this is my first firefox-extension and my first javascript program, and I'm used to C and assembly-language where nothing is hidden, so I'm having a difficult time understanding what to expect. My question will be about multiple execution contexts (or the [partial] lack thereof) in multiple windows my extension creates with window.open() or window.openDialog() . But first let me describe what my extension is doing, in

问题 Title says it all. I am so confused about whole concept of execution context in JavaScript. I understand that each execution context is associated with one variable object, and variable object stores declared variables, functions and formal parameters. The word "execution context" is so abstract term for me to understand. If the variable object stores everything, then what is this word "execution context" for? Are these just two word for same thing? 回答1: No, they're separate things. All the

问题 I am trying to discover how the ExecutionContext actually works in version 4.0 and above of the .NET Framework. The documentation says that the managed principle, synchronization, locale and user context all flow to the new thread when using Thread.Start and most thread pool operations. But I cannot see this working at all in practice. Here is a simple console application that tests if the synchronization context and managed principle flow when starting a new thread... static void Main(string

问题 I have some synchronous calls in my Scala code. I've wrapped them in a blocking() context and then in a Future: Future(blocking(syncCall())), but I don't know which type of ExecutionContext to use. I know there may be a lot of possibilities and that there is not an ExecutionContext that it's the "best". I just need some information in order not to choose the worst because there is a lot of information out there and I have a mess in my head. 来源： https://stackoverflow.com/questions/38014748