👉 In computer science, "fence" is a software or hardware component that is used to ensure that only one process can access a resource at a time. This is often referred to as a "lock" because it allows other processes to acquire exclusive control over the resource without causing any interference or loss of data. Fences are typically implemented using a number of different mechanisms, including read-only fences (RWFs), read-write fences (RWFs), and shared fences (SFs). SFs
