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Questions tagged [task]

A task is an abstraction that is used to work with concurrency, it can denote operation that should be executed concurrently with the rest of a program. A task is a concurrent thread of execution in Ada and represents an asynchronous operation in .NET, also it corresponds to Threads in Java.

A task is an abstraction that is used to work with concurrency, it can denote operation that should be executed concurrently with the rest of a program.

  • Ada
    A task is a concurrent thread of execution in an Ada program. Task definitions are split into two parts - declaration and a body, which is mandatory. Task declaration defines entities exported from the task, whereas its body contains local declarations and statements of the task.

  • .NET
    Task is used to represents an asynchronous operation, it is a core concept of the which is used for asynchronous and parallel programming in the .NET framework.

  • C++
    future is used to represent an operation which may complete some time in the future. It helps programs achieve a degree of asynchrony where they may want/need to perform certain operations in parallel. std::async creates a task which may execute asynchronously, returning a std::future.

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Waiting for async/await inside a task

I have this construct in my main(), which creates var tasks = new List(); var t = Task.Factory.StartNew( async () => { Foo.Fim(); await Foo.DoBar(); }); //DoBar not completed t.Wait(); //Foo.Fim() done, Foo.DoBar…
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Gradle task check if property is defined

I have a Gradle task that executes a TestNG test suite. I want to be able to pass a flag to the task in order to use a special TestNG XML suite file (or just use the default suite if the flag isn't set). gradle test ... should run the default…
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Can .NET Task instances go out of scope during run?

If I have the following block of code in a method (using .NET 4 and the Task Parallel Library): var task = new Task(() => DoSomethingLongRunning()); task.Start(); and the method returns, will that task go out of scope and be garbage collected, or…
Hank
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Python - What is queue.task_done() used for?

I wrote a script that has multiple threads (created with threading.Thread) fetching URLs from a Queue using queue.get_nowait(), and then processing the HTML. I am new to multi-threaded programming, and am having trouble understanding the purpose of…
J. Taylor
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What's the difference between mustRunAfter and dependsOn in Gradle?

Whether taskB mustRunAfter taskA, or taskB dependsOn taskA, it seems that taskA runs first, then taskB runs. What's the difference?
Dan B.
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Find out whether celery task exists

Is it possible to find out whether a task with a certain task id exists? When I try to get the status, I will always get pending. >>> AsyncResult('...').status 'PENDING' I want to know whether a given task id is a real celery task id and not a…
dominik
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Activity stack ordering problem when launching application from Android app installer and from Home screen

For testing purposes only, I am allowing my app APK to be downloaded and installed via a URL. Once downloaded on the phone, it can be launched with the Android app installer which gives the user an option to install it to their device and then run…
antonyt
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Set ApartmentState on a Task

I am trying to set the apartment state on a task but see no option in doing this. Is there a way to do this using a Task? for (int i = 0; i < zom.Count; i++) { Task t = Task.Factory.StartNew(zom[i].Process); t.Wait(); }
Luke101
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App always starts fresh from root activity instead of resuming background state (Known Bug)

I am facing exactly the problem mentioned in these…
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What happens while waiting on a Task's Result?

I'm using the HttpClient to post data to a remote service in a .NET 4.0 project. I'm not concerned with this operation blocking, so I figured I could skip ContinueWith or async/await and use Result. While debugging, I ran into an issue where the…
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How can I run both of these methods 'at the same time' in .NET 4.5?

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Celery: How to ignore task result in chord or chain?

I'm using celery, I have several tasks which needed to be executed in order. For example I have this task: @celery.task def tprint(word): print word And I want to do something like this: >>> chain(tprint.s('a') | tprint.s('b'))() Then I get…
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IRequestHandler return void

Please see the code below: public class CreatePersonHandler : IRequestHandler { public async Task Handle(CreatePersonCommand message, CancellationToken cancellationToken) { return true; } } It…
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Return list from async/await method

I want to make a webservice request asynchron. I call it here: List list = GetListAsync(); Here is the declaration of my function, which should return a list: private async Task> GetListAsync(){ List list = await…
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Delete a Jenkins Build via GUI

How can I delete a build from the Jenkins GUI? I know that I can delete the directory from the 'jobs' folder, but I want to do it from the GUI. Is it also possible to delete multiple builds?
r.rodriguez
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