0 a system of communication using two flags held in your hands that are moved into different positions to represent different letters, numbers, or symbols
By clause 6, a waiting process can synchronize with the relevant monitor and is granted access provided the corresponding semaphore is unlocked.
Another algorithm, for proving freedom from deadlock for two transactions synchronizing with binary semaphores only was also described.
The requirement that the semaphore remain non-negative at all times limits allocation to the available resources.
Although it is a compound structure, it is treated as an atomic element by semaphore.
Mutual exclusion is enforced by providing each resource with a semaphore.
Any time a process wants to exchange data, it will wait for the semaphore.
We focus on the interaction between processes - this interaction is through shared resources, which are given by their semaphores.
Two important features of semaphores make them the ideal candidates for the means of synchronization for data dependency and data consistency (mutual exclusion).
