Semaphore

Using binary semaphore (same as Mutex) for 1 shared resource

thread-binary-semaphore

 

Using binary semaphore (same as Mutex) ticket seller for 1 shared resource (ticket counter) and 4 sellers

thread-binary-semaphore -ticketSeller

 

Using semaphore for reader/writer problem (1 writer & 2 readers) sharing 5 integer buffers

thread-semaphore-readerWriter