Kas on Lock mõiste mitme- või sünkroniseerimise kontekstis?

Lock (bloke) is a synchronization mechanism used to manage access to shared resources in a multithreaded environment. It ensures that only one thread can execute the critical section of code at a time, preventing race conditions and ensuring data integrity.

On iOS, objects like NSLock, DispatchSemaphore, or @synchronized are often used.

Example of using NSLock:

let lock = NSLock()

func criticalSection() {
    lock.lock()
    // code that should be executed by only one thread
    lock.unlock()
}

Without locking, multiple threads could modify data simultaneously, leading to errors.