Question

Briefly explain the differences between a semaphore and a condition variable, and what problem in common these two synchronization primitives solve.

Answer 1

Answer)
The conditions variables are used for avoiding the cases for busy waiting, when or more processes or threads are waiting for some shared resources. This method provides access to the shared resource and also for achieving mutual exclusion. Semaphores are used also for maintaining and implementing the exclusive access tot he variables and also resources. Semaphores are simply variables which are used in the computing are being used to solve the critical section problems and resources. While the condition variables are the primitive which mean that the threads and processes would have to wait till a particular condition has occurred thereby preventing access to the resource, which can be useful for controlling busy waiting. Thus these two synchronization primitives for solving the problems related to threads accessing the shared resources.