Implement sempahore using monitor.wait(obj) and monitor.pulse(obj)

See more:

C#

threads

Async

ASP.NET5

I have a following task:

"Ordinary" semaphore

Initialized to the number of available resources. operations: request () - waits until the resource is released, release () - releases the resource, numberAvailable () - returns number available resources, the n

which I tried to implement using Semaphore slim:

What I have tried:

class Program
       {
           private const int InitialCount = 2;
           private const int MaximumCount = 8;

           static void Main()
           {
               var semaphoreObject = new SemaphoreSlim(InitialCount, MaximumCount);
               var printerObject = new Printer();

               for (int i = 0; i < 20; ++i)
               {
                   int j = i;
                   Task.Factory.StartNew(() =>
                   {
                       Request(semaphoreObject);
                       printerObject.Print(j);
                       Release(semaphoreObject);
                       NumberAvailable(semaphoreObject);
                   });
               }
               Console.ReadLine();
           }

           private static void Request(SemaphoreSlim s)
           {
               s.Wait();
           }

           private static void Release(SemaphoreSlim s)
           {
               s.Release();
           }

           private static void NumberAvailable(SemaphoreSlim s)
           {
               Console.WriteLine($"Available resource: {s.CurrentCount}");
           }
       }

       class Printer
       {
           public void Print(int documentToPrint)
           {
               Console.WriteLine("Printing document: " + documentToPrint);
               Thread.Sleep(TimeSpan.FromSeconds(5));
           }
       }

however now, I need to do that using Monitor class, so I should create my own semaphore class. However I am a bit lost on how to change that