self doubt

Question

What is the actual difference between binary semaphore & Mutex????? Are both same thing????

What is the up() code for binary semaphore?????

Comments

Good Explanation aambazinga   

Anyone for details see here

 https://stackoverflow.com/questions/62814/difference-between-binary-semaphore-and-mutex

 

---

what do you mean by mutex semaphore??

---

Sorry about my above comment ,but mutex locks suffers from busy waiting right??

Answer 1

They are NOT the same thing.

They are used for different purposes!
While both types of semaphores have a full/empty state and use the same API, their usage is very different.

Mutex is for exclusive access to a resource(data structure, file, etc..).

 A Binary semaphore should be used for synchronization (i.e. "Hey Someone! This occurred!"). The Binary "giver" simply notifies whoever the "taker" that what they were waiting for happened.