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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 ...
The WHO Model List of Essential Medicines (aka Essential Medicines List or EML [1]), published by the World Health Organization (WHO), contains the medications considered to be most effective and safe to meet the most important needs in a health system. [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 ...
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 J. Dekker by Edsger W. Dijkstra in an unpublished paper on sequential process descriptions [1] and his manuscript on cooperating sequential processes.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]
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 ...
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.
Peterson's algorithm (or Peterson's solution) is a concurrent programming algorithm for mutual exclusion that allows two or more processes to share a single-use resource without conflict, using only shared memory for communication.
Raymond's Algorithm is a lock based algorithm for mutual exclusion on a distributed system. It imposes a logical structure (a K-ary tree ) on distributed resources. As defined, each node has only a single parent, to which all requests to attain the token are made.