What is Semaphore?
A synchronization mechanism holding a counter of remaining units: decrement before use (waiting at 0) and increment when done. Used to manage resources with a fixed number of units.
Field: Multicore & Synchronization
Semaphore in the explanations
A semaphore holds a counter of remaining units: a thread decrements it before use (waiting if it is 0) and increments it when done.
What is the most suitable use of a counting semaphore?
Questions that mention Semaphore (1)
Related terms
ABA problem Acquire-release semantics Atomic instruction Barrier synchronization Bus snooping Compare-and-swap Condition variable Critical section Data race Deadlock