Thread-safe stacks in .NET

Exercises in .NET with Andras Nemes

We saw how Stacks work in .NET in this post. Stacks are last-in-first-out collections where the last element added to the collection will the first to be removed.

If you’d like to have a Stack that is shared among multiple threads in a multi-threaded application then the “normal” Stack of T object won’t be enough. You can never be sure of the current state of the stack in the very moment when a certain thread tries to pop an item from it. The stack may have been modified by another thread just a millisecond before and then the Pop method will fail. In general you should be very careful with how you share the resources among different threads.

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