Příklady semaphore

• 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).

• Before the process gets back, it posts the semaphore to unlock the data.

• The following example defines a simple reactive system where a set of user processes interact with a binary semaphore which provides mutual exclusion in the access to a critical region.

• Stoughton (1981) compares access control and information flow in a simple imperative language with semaphores.

• As a result, the semaphore is locked.

• I agree that there are problems associated with flashing indicators and with the semaphore type as well.

• The next point on signalling where this system might be of advantage is in connection with the system of sending signals by semaphore or light.

• The semaphore principle in approaching legislation is not always the best guide.