The Task Parallel Library is part of the .NET Framework since .NET 4. It is a set of APIs that simplifies the process of adding parallelism and concurrency to applications.
The Task Parallel Library (TPL) is a set of public types and APIs in the System.Threading and and the System.Threading.Tasks namespaces in the .NET Framework 4 and up. The purpose of the TPL is to make developers more productive by simplifying the process of adding parallelism and concurrency to applications. The TPL scales the degree of concurrency dynamically to most efficiently use all the processors that are available. In addition, the TPL handles the partitioning of the work, the scheduling of threads on the ThreadPool, cancellation support, state management, and other low-level details.
I see the below from QueuedTaskScheduler.cs documentation, but its not very clear to me.
threadCount - The number of threads to create and use for processing work items.
maxConcurrencyLevel - The maximum degree of concurrency allowed for this…
I am playing a little bit with ConfigureAwait because I would like to understand how it works.
Therfore, I wrote the following small console application (actually running in LINQPad):
void Main()
{
// Use dispatcher to execute the code on STA…
I have spend almost two days reading async/await tutorials and answers on Stackoverflow and trying to understand asynchronous and parallel execution in C#. Still I can not get it to work with my code.
What I need
Execute a Active Directory search…
I have a Backgroundworker whose purpose is to run jobs sequentially in the background. Now one job is implemented in multithreading way. That mean, the Backgroundworker will create several threads. I use Task Parallel Library so I use the…
For some reason when an OperationCanceledException gets thrown inside an IDataflowBlock, the block does not propagate this exception to its IDataflowBlock.Completion task. Running the code sample below returns an unexpected…
I have some DB operations to perform and I tried using PLINQ:
someCollection.AsParallel()
.WithCancellation(token)
.ForAll(element => ExecuteDbOperation(element))
And I notice it is quite slow compared to:
var tasks =…
After reading a recent MSDN Magazine article about the Task scheduler I was hoping (and actually quite excited) that using it would benefit my use of WCF generated proxies.
I was hoping to get some of the following benefits :
1) Ability to abort a…
We have a Windows service that calls a 3rd party method that can hang when improperly configured by the end user, which is difficult to test for beforehand. We're handling this risk by calling the method in a Task with a timeout:
private int?…
I'm learning about async programming in C#, and written this code to test Task Parallel Library (Console application):
static void Main(string[] args)
{
Stopwatch sw = new Stopwatch();
var opr1 = new SlowOperation();
var opr2 = new…
I would like to understand how what I should be using inside of my "try" block when trying to await an Array of Tasks.
I want all tasks to be awaited, regardless if one of them threw an Exception, so that they can all complete.
Should I use:
var…
I have a Task t1. I want to run another Task t2 after t1 completes. I choose to use the .ContinueWith method of t1.
void ThenFrob(Task t1) {
t1.ContinueWith(frobber => frobber.Frob())
}
Except, I cannot do this, because the Action…
I have a Dataflow pipeline consisting of several blocks.
When elements are flowing through my processing pipeline, I want to group them by field A. To do this I have a BatchBlock with high BoundedCapacity. In it I store my elements until I decide…
In a GUI application, there are a ton of ways to run asynchronous code and have the result run on your "main" thread:
Use async/await
Use a BackgroundWorker
someControl.Invoke()
.ContinueWith(...,…
I'm playing around with BlockingCollection to try to understand them better, but I'm struggling to understand why my code hangs when it finishes processing all my items when I use a Parallel.For
I'm just adding a number to it (producer?):
var…
