Monitor vs Mutex

Question

I read that mutex is a semaphore with value 1 (binary semaphore) used to enforce mutual exclusion.

I read this link Semaphore vs. Monitors - what's the difference? wh

Answer 1

Monitor are different then Mutex but they can be considered similar in a sense that Monitor are build on top of Mutex. See depiction of monitor in an image at the bottom, for clarity.

Monitor is a synchronization construct that allows threads to have both mutual exclusion (using locks) and cooperation i.e. the ability to make threads wait for certain condition to be true (using wait-set).

In other words, along with data that implements a lock, every Java object is logically associated with data that implements a wait-set. Whereas locks help threads to work independently on shared data without interfering with one another, wait-sets help threads to cooperate with one another to work together towards a common goal e.g. all waiting threads will be moved to this wait-set and all will be notified once lock is released. This wait-set helps in building monitors with additional help of lock (mutex).

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Semaphore vs. Monitors - what's the difference?