Mutexes differ from binary semaphores primarily through the principle of ownership — only the task that locks a mutex can unlock it. This ownership enables several safety features: prevention of accidental release, support for recursive locking, priority inheritance protocols (Basic Priority Inheritance and Priority Ceiling Protocol), and death detection when a task terminates while holding a mutex. However, mutexes do not automatically solve circular deadlock (the 'deadly embrace') or non-cooperative access. The Priority Ceiling Protocol is explained as a way to eliminate the 'hold and wait' deadlock condition. The Monitor pattern — encapsulating shared resources and locking behind a controlled interface — is presented as the solution to non-cooperation. The post also clarifies that not all RTOS mutex implementations support recursion, priority inheritance, or death detection.
