Answer Posted / saleem
Priority inversion is a situation where in lower priority
tasks will run blocking higher priority tasks waiting for
resource (mutex). For ex: consider 3 tasks. A, B and C, A
being highest priority task and C is lowest. Look at
sequence of context swaps
A goes for I/O . unlocks mutex.
C was ready to run. So C starts running. locks mutex
B is ready to run. Swaps out C and takes mutex.
A is ready to run. but A is blocked as mutex is locked by B.
but B will never relinqishes the mutex as its higher
priority than C.
The solution to priority inversion is Priority inheritance.
| Is This Answer Correct ? | 56 Yes | 31 No |
Post New Answer View All Answers
No New Questions to Answer in this Category !! You can
Post New Questions
Answer Questions in Different Category
