What are the different types of priority inversion?

Can you explain what priority inversion is?

Priority inversion occurs when a lower-priority task holds a resource needed by a higher-priority task, causing the higher-priority task to be blocked.

What are the different types of priority inversion?

There are mainly three types: simple priority inversion, priority inversion with a chain, and priority inversion with multiple resources.

Can you give me an example of each type?

Sure! In simple priority inversion, a low-priority task blocks a high-priority one. In a chain, multiple tasks are involved, creating a blocking chain. For multiple resources, a high-priority task waits for two or more resources held by lower-priority tasks.

How can priority inversion be prevented?

It can be prevented using techniques like priority inheritance, priority ceiling protocols, or avoiding shared resources.