Despite the intended nature, we seldom might come across situation where we would want to place a lock around an async statement and make it behave differently, especially when accessed from different threads. Let's try to mock the scenario first to demonstrate the issue. The lock-async Problem Consider the following code snippet. The output of … Continue reading Lock for Async Methods
Tag: Async
Async : IProgress and Immutability
In the previous post, we explored IProgress interface briefly and understood how it helps us in reporting progress. It seemed a perfect fit choice, with little chances of human errors. However, there are things one needs to be aware of to ensure you do not end up with unrecognizable errors. Let's rewrite the code in … Continue reading Async : IProgress and Immutability
Reporting Progress in Async Method
Quite often you would need to provide some kind of progress from your long running asynchronous method, especially if it process multiple activities. Though there might be multiple ways to achieve it, Microsoft provides us with a simple and efficient interface IProgress, which enables us to achieve the result. Let's hit the code straightaway. The … Continue reading Reporting Progress in Async Method
APM/EAP to TAP
Asynchronous Programming has evolved over the years, right from the APM to the extremely powerful TAP Model. One (or probably the only one) of the problem which developers find themselves in is to use legacy code which were written somewhere in between the evolution. Quite often, developers might be inclined to wrap the existing code … Continue reading APM/EAP to TAP
Unit Testing Asynchronous Code
Unit Testing Asynchronous methods in older days were pretty tough, but thanks to the advances made in the Unit Testing Frameworks, this is now all the more easier. We will begin by writing an async method, which we could use for writing our Unit Tests against. The advancements in Unit Testing Framework has made it … Continue reading Unit Testing Asynchronous Code
WaitForFirstN Tasks Method
There is a definite gap between TAP Utilities Task.WaitAny and Task.WaitAll. How do we wait for the first 'N' tasks from an array of tasks. That is one utility that is missing from TAP's rich repository. It might not be hard to implement one by yourself though. The above code uses existing Task Collaborators Task.WaitAny … Continue reading WaitForFirstN Tasks Method
Switching Context With Async
Whenever an await is encountered in the code, a context is captured, which is later used when the promise is completed and ready to continue. If the method is called by the UI thread, usually, the context could be UI context, unless the awaited method itself creates a new thread. This can be demonstrated in … Continue reading Switching Context With Async
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