Guaranteed semaphore order?

Question

The documentation for the .NET Semaphore class states that:

There is no guaranteed order, such as FIFO or LIFO, in which blocked threads enter the sem

Answer 1

See this:

The FifoSemaphore works exactly like a normal Semaphore but also guarantees that tokens are served out to acquirers in the order that they manage to acquire the internal lock. The usage of a FifoSemaphore is identical to a Semaphore.