What is Mutex?

Mutex in the explanations

• When a mutex cannot be acquired, the thread is put into a waiting state and the CPU goes to other threads; the OS wakes it when the lock is released.

  Which correctly compares a mutex (a lock that sleeps while …

• Long waits call for a mutex that sleeps, and some locks spin briefly before sleeping.

  In which situation is a spinlock least suitable?

• If a high-priority task waits for a mutex held by a low-priority task, it must wait until the low task releases it.

  Which describes priority inversion in an RTOS?

Questions that mention Mutex (4)

1. Which correctly compares a mutex (a lock that sleeps while waiting) with a spinlock?
2. In which situation is a spinlock least suitable?
3. Which describes priority inversion in an RTOS?
4. Which describes priority inheritance, used to prevent priority inversion?

Related terms

Spinlock Priority inversion Real-time operating system (RTOS) Context switch CPU time Priority inheritance ABA problem Acquire-release semantics Atomic instruction Barrier synchronization