Mutex in Operating System
- Mutex is another concurrency tool.
- Mutex is a mutual exclusion object that allows the synchronized access to shared resources.
- It is a short form of mutual exclusion. When a program is started or initialized, a mutex with unique name is created.
- Mutex can have two different states : lock and unlock.
- Only one process can lock a mutex at a time and any other process trying to lock it is blocked.
- A blocked process can acquire or lock mutex only when mutex is released or unlocked by the locking process.
- In case of multiple competing processes, an appropriate scheduling algorithm (priority based or FCFS) determines which blocked process should acquire the mutex