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  2. Lock (computer science) - Wikipedia

    en.wikipedia.org/wiki/Lock_(computer_science)

    In computer science, a lock or mutex (from mutual exclusion) is a synchronization primitive that prevents state from being modified or accessed by multiple threads of execution at once. Locks enforce mutual exclusion concurrency control policies, and with a variety of possible methods there exist multiple unique implementations for different ...

  3. Mutual exclusion - Wikipedia

    en.wikipedia.org/wiki/Mutual_exclusion

    In computer science, mutual exclusion is a property of concurrency control, which is instituted for the purpose of preventing race conditions. It is the requirement that one thread of execution never enters a critical section while a concurrent thread of execution is already accessing said critical section, which refers to an interval of time ...

  4. Automatic mutual exclusion - Wikipedia

    en.wikipedia.org/wiki/Automatic_mutual_exclusion

    Automatic mutual exclusion is a parallel computing programming paradigm in which threads are divided into atomic chunks, and the atomic execution of the chunks automatically parallelized using transactional memory.

  5. Critical section - Wikipedia

    en.wikipedia.org/wiki/Critical_section

    A critical section is a piece of a program that requires mutual exclusion of access. Locks and critical sections in multiple threads As shown in the figure, [ 3 ] in the case of mutual exclusion ( mutex ), one thread blocks a critical section by using locking techniques when it needs to access the shared resource, and other threads must wait ...

  6. SXM (transactional memory) - Wikipedia

    en.wikipedia.org/wiki/SXM_(transactional_memory)

    It achieves mutual exclusion using database-like atomicity transactions. SXM uses the Reflection and dynamic code generation capabilities of .NET Framework to emit CIL code to enable atomic transactions on shared data structures directly at runtime. SXM has been written in C#.

  7. Glossary of operating systems terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_operating...

    lock: In computer science, a lock or mutex (from mutual exclusion) is a synchronization mechanism for enforcing limits on access to a resource in an environment where there are many threads of execution. A lock is designed to enforce a mutual exclusion concurrency control policy.

  8. Dekker's algorithm - Wikipedia

    en.wikipedia.org/wiki/Dekker's_algorithm

    Dekker's algorithm is the first known correct solution to the mutual exclusion problem in concurrent programming where processes only communicate via shared memory. The solution is attributed to Dutch mathematician Th. J. Dekker by Edsger W. Dijkstra in an unpublished paper on sequential process descriptions [1] and his manuscript on cooperating sequential processes. [2]

  9. Dryad (programming) - Wikipedia

    en.wikipedia.org/wiki/Dryad_(programming)

    The "computational vertices" are written using sequential constructs, devoid of any concurrency or mutual exclusion semantics. The Dryad runtime parallelizes the dataflow graph by distributing the computational vertices across various execution engines (which can be multiple processor cores on the same computer or different physical computers ...