2024 Getawaiter getresult deadlock

Getawaiter getresult deadlock

Author: ljlr

August undefined, 2024

WebApr 24, 2024 · Here the UnWrap + GetAwaiter do the magic for us to be able to handle the exception normally. In order to avoid deadlocks the async operation is passed to an … WebJan 7, 2024 · This is great to avoid deadlocks and can also be used within a try/catch block to get the exception raised by the AsyncMethod itself. ... thus not being a “make async sync while locking the thread” such as .GetAwaiter().GetResult(), .Wait or .Result: however, it’s an entirely different scenario from the article topic. ...

Is GetAwaiter().GetResult() cause a deadlock ? #64849 - GitHub

WebOct 30, 2016 · .GetAwaiter ().GetResult () is different from Result/Wait () in that it mimics the await exception propagation behavior. You need to decide if you want that or not. (So research what that behavior is; no need to repeat it here.) If your task contains a single exception then the await error behavior is usually convenient and has little downside. WebSep 8, 2014 · there's no much difference what to use: Task.Result or GetAwaiter ().GetResult () - both of them block current thread. To get rid of the deadlock you may keep blocking current thread but you need to ensure that every async call inside Repository.SaveAsync doesn't passes its continuation to the current thread, i. e. has … honda beat street std

Why in one case GetAwaiter() block my application and in …

WebUse awaiter and callback In this approach the UI client calls the service layer and passes a callback to the service layer, the service layer wraps the http call to the server in a task and use GetAwaiter ().GetResult (), when the http call is finished it invokes the callback passed by the UI client. WebAug 26, 2024 · You should go all way down with async/await. If you are using ".GetAwaiter ().GetResult ()", ".Result" or ".Wait ()" to get the result of a task or to wait for the task … WebSep 27, 2024 · @linkinshi yes, Task.Wait, GetAwaiter().GetResult(), Task.Result can all dead lock and they can all starve the thread pool. You need to await the Task. if the GetAwaiter().GetResult() still cause deadlock, why there is so many GetAwaiter().GetResult() in the source code . historic cloud cover data

Will running async code from a new thread cause a deadlock?

Don

WebSep 27, 2024 · @linkinshi yes, Task.Wait, GetAwaiter().GetResult(), Task.Result can all dead lock and they can all starve the thread pool. You need to await the Task. if the … WebAn async/await example that causes a deadlock (5 answers) Is .GetAwaiter ().GetResult (); safe for general use? (2 answers) Closed 2 years ago. I have 2 projects, both use Net 5, entity framework Net 5 and async. The unique difference is that the project that is blocked use Sql Server and the other use Sqlite. honda beckley atvWebDec 12, 2024 · Avoiding deadlocks. Consider a library method that uses await on the result of some network download. You invoke this method and synchronously block waiting for it to complete, such as by using .Wait() or .Result or .GetAwaiter().GetResult() off of the returned Task object. honda beat vs mio

"WebDec 12, 2024 · Avoiding deadlocks. Consider a library method that uses await on the result of some network download. You invoke this method and synchronously block waiting for … " - Getawaiter getresult deadlock

Getawaiter getresult deadlock

c# - Calling async methods from non-async code - Stack Overflow

WebJul 28, 2015 · When code invokes an asynchronous method, it’s generally proper to await the returned task. At this point, the compiler will complain. The following code will cause a compiler error with the message, “The ‘await’ operator can only be … WebMy guess is that it was deadlocked when they called .Result (). If so, the options to fix are: Use async/a wait Use a callback Run it on a new thread, blocking the current thread until …

Did you know?

WebNow if you are in a situation where you can't use async/await and you have to do sync over async, the preferred way to do it seems to be Task.GetAwaiter ().GetResult (); which can still cause deadlocks but at least it doesn't wrap exceptions in an AggregateException . So why do Task.Wait and Task.Result even exist? As I describe on my blog, GetAwaiter().GetResult() can deadlock when it's used in a one-thread-at-a-time context. This is most commonly seen when called on the UI thread or in an ASP.NET context (for pre-Core ASP.NET). Wait has the same problems. The appropriate fix is to use await, and make the calling code asynchronous.

WebFeb 11, 2024 · The deadlock is because it's blocking on asynchronous code. In this code: private TimeSpan GetDataAsync1 () { return GetTS ().ConfigureAwait (false).GetAwaiter ().GetResult (); } the ConfigureAwait (false) does nothing. ConfigureAwait configures awaits, not tasks, and there is no await there. The best option is to go async all the way. WebApr 13, 2024 · One of them is just to block directly. This works fine for Console / ASP.NET Core applications (because they don't have a context that would cause the deadlock). I recommend using GetAwaiter().GetResult() in this case to avoid exception wrappers that come when using Result / Wait(): CallAsyncTest(i).GetAwaiter().GetResult();

WebTask miTask = Task.Run(() => { return 0; }); int myIntResult = miTask.GetAwaiter().GetResult(); Edit 02: the suggestion solution of another question … WebNov 24, 2024 · Using Task.Run(...).GetAwaiter().GetResult() can be used as a workaround to run async code and wait on it synchronously, it will not result in an async deadlock, …

WebOct 4, 2024 · await is aware of a thing called SynchronizationContext.If such context is present (SynchronizationContext.Current is not null) then continuation after await is passed to that context, because it should know better how to handle it (unless you explicitly tell to not do that, using await someTask.ConfigureAwait(continueOnCapturedContext: … honda beavercreekWebNov 8, 2024 · 回到該不該用 .Wait()、.Result、GetAwaiter().GetResult() 議題上，首先要知道，這三者存在兩項共通風險 - Deadlock 跟 ThreadPool Starvation (執行緒短缺)。.Result 混用 async 觸發 Deadlock 的案例之前我寫過文章，此處不贅述。至於 ThreadPool Starvation，起因於 .Wait()、.Result、.GetResult ... historic classicsWebJan 17, 2024 · GetAwaiter ().GetResult () when working with Tasks. Dispatcher.Invoke () when working in WPF. When you see the debugger’s execution point stuck on any of the … honda beavercreek serviceWebNormally, the GetAwaiter method is just used by await, but it is possible to call it yourself: Task task = ...; T result = task.GetAwaiter().GetResult(); The code above will … historic city of yazdWebAug 25, 2015 · What is the best way to use HttpClient and avoid deadlock? I am using the code below, called entirely from synchronous methods, but I concerned it maybe causing a deadlock. I've done some reading on functions like .ConfigureAwait(false), .GetAwaiter(), .GetResult() but I am looking for input on the best practice approach.. Not quite exact … honda beavercreek ohioWebMar 11, 2024 · Anyway, to answer the questions. There is no dispatcher or messagepump or sync context on the thread you are creating which means there is no deadlock, secondly, when you call .GetAwaiter().GetResult() it is calling and blocking on the current thread, which is just a random thread you spun up. However, i would really reconsider this … honda beechmont ohioWebAug 31, 2014 · In the first example, you call await projectClient.GetProjects () with Thread1, so Thread1 must continue the execution but it's BLOCKED in this.GetProjects (uri).Result; – Khanh TO Aug 31, 2014 at 4:37 I was under assumption, once ConfigureAwait (false) is used (any where in the call stack), execution from that point will not cause deadlock. honda beaverton deals