What are some examples of async deadlocks in programming?

What are some examples of async deadlocks in programming?

Async deadlocks occur when two or more asynchronous tasks are waiting for each other to complete, causing a standstill. For example, if Task A is waiting for Task B to finish while Task B is waiting for Task A, neither can proceed.

Can you give me a specific code example?

Sure! Here's a simple example in C#:

async Task TaskA() {
    await TaskB();
}

async Task TaskB() {
    await TaskA();
}

In this case, both tasks are waiting on each other, leading to a deadlock.

How can I avoid async deadlocks?

To avoid async deadlocks, ensure that you don't call async methods from synchronous code. Use ConfigureAwait(false) when awaiting tasks in libraries to prevent capturing the synchronization context.

Are there any tools to detect async deadlocks?

Yes, tools like Visual Studio's debugger, ReSharper, and various profiling tools can help detect and analyze async deadlocks in your code.