Concurrency control algorithms | Concurrency control

Non-blocking algorithm

In computer science, an algorithm is called non-blocking if failure or suspension of any thread cannot cause failure or suspension of another thread; for some operations, these algorithms provide a useful alternative to traditional blocking implementations. A non-blocking algorithm is lock-free if there is guaranteed system-wide progress, and wait-free if there is also guaranteed per-thread progress. "Non-blocking" was used as a synonym for "lock-free" in the literature until the introduction of obstruction-freedom in 2003. The word "non-blocking" was traditionally used to describe telecommunications networks that could route a connection through a set of relays "without having to re-arrange existing calls" (see Clos network). Also, if the telephone exchange "is not defective, it can always make the connection" (see nonblocking minimal spanning switch). (Wikipedia).

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Priority inversion | Lock (computer science) | Compare-and-swap | Scheduling (computing) | FIFO (computing and electronics) | Software transactional memory | Deadlock | Consistency model | Clos network | Hash table | Linearizability | Critical section | Load-link/store-conditional | Mutual exclusion | Producer–consumer problem | Semaphore (programming) | Nonblocking minimal spanning switch | Read-copy-update | Algorithm