Lock-free programming is hard. We will not spend a lot of time discussing lock-free programming in this book, but instead provide you with an example of how a very simple lock-free data structure could be implemented. There is a great wealth of resources—on the web and in books—dedicated to lock-free programming that will explain the concepts you need to understand before writing your own lock-free data structures. Some concepts you might have heard of, related to lock-free programming, such as Compare-And-Swap (CAS) and the ABA-problem will not be further discussed in this book.
Lock-free programming
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