How to build your own task scheduler in C#

Take advantage of a custom task scheduler to provide added functionalities over the default task scheduler and manage how tasks are scheduled in .Net

The TPL (Task Parallel Library) is one of the most interesting new features in the recent versions of .NET framework, having first been introduced in .NET Framework 4.0. To work with the TPL you would need to take advantage of the System.Threading.Tasks namespace.

What are task schedulers? Why do we need them?

Now, how is that the tasks are scheduled? Well, there is a component called task scheduler that is responsible for scheduling your tasks. In essence, it’s an abstraction for a low-level object that can queue your tasks onto threads.

The .NET Framework provides you with two task schedulers. These include the default task scheduler that runs on the .NET framework thread pool, and another task scheduler that executes on the synchronization context of a specified target. Note that the default task scheduler of the TPL takes advantage of the .NET Framework thread pool. This thread pool is in turn represented by the ThreadPool class that is contained inside the System.Threading.Tasks namespace.

Although the default task scheduler will suffice most of the time, you may want to build your own custom task scheduler to provide added functionalities, i.e. features that are not provided by the default task scheduler. Such features may include, FIFO execution, degree of concurrency, etc.

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