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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 ...
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 J. Dekker by Edsger W. Dijkstra in an unpublished paper on sequential process descriptions [1] and his manuscript on cooperating sequential processes.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]
Szymański's Mutual Exclusion Algorithm is a mutual exclusion algorithm devised by computer scientist Dr. Bolesław Szymański, which has many favorable properties including linear wait, [1] [2] and which extension [3] solved the open problem posted by Leslie Lamport [4] whether there is an algorithm with a constant number of communication bits per process that satisfies every reasonable ...
Lamport's bakery algorithm is a computer algorithm devised by computer scientist Leslie Lamport, as part of his long study of the formal correctness of concurrent systems, which is intended to improve the safety in the usage of shared resources among multiple threads by means of mutual exclusion.
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 ...
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 ...
Maekawa's algorithm is an algorithm for mutual exclusion on a distributed system. The basis of this algorithm is a quorum -like approach where any one site needs only to seek permissions from a subset of other sites.
Thread, Mutual Exclusion (mutex), Lock, Semaphore Concurrency within a single process where multiple threads can run code simultaneously and share resources. Actor model: Actor, Message Passing, Mailbox A mathematical model that treats "actors" as the fundamental units of concurrency, with each actor processing messages asynchronously.