Define following terms:(i)Critical section (ii) Mutual exclusion (iii) Bounded waiting
Question
Define following terms:
- Critical section
- Mutual exclusion
- Bounded waiting
Solution
(i) Critical Section: In concurrent programming, a critical section is a piece of code that accesses shared resources (data structure or device) and cannot be executed in parallel. It's a part of a program where the process accesses shared variables or resources. The critical section problem is to design a protocol that the processes can use to cooperate. Each process must request permission to enter its critical section.
(ii) Mutual Exclusion: Mutual exclusion is a property of concurrency control in computing systems. It ensures that multiple processes or threads do not execute some particular program segment known as critical section concurrently. In simple terms, it means that one process or thread can execute in its critical section at a time, and if any other process requests to enter its critical section, it will have to wait until the first one finishes execution.
(iii) Bounded Waiting: Bounded waiting is a condition that ensures that no process waits indefinitely to enter its critical section after making a request. It puts a limit or bound on the number of times other processes are allowed to enter their critical sections after a process has made a request to enter its critical section and before that request is granted. This condition prevents indefinite postponement and ensures that every process gets a fair chance.
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