/**********************
* FUNCTION NAME: Main
* INPUT: string args[]
* OUTPUT: void
* DESCRIPTION: Driver Function for program
* Initializes and starts threads
**********************/
static void Main(string[] args)
{
int burgers;
Nom2 n = new Nom2();
burgers = n.Input();
Thread milk1 = new Thread(() => Milk_Production(n, "1", burgers));
milk1.Name = "milk1";
Thread milk2 = new Thread(() => Milk_Production(n, "2", burgers));
milk2.Name = "milk2";
Thread milk3 = new Thread(() => Milk_Production(n, "3", burgers));
milk3.Name = "milk3";
Thread cheese1 = new Thread(() => Milk_Consumption(n, "4", burgers));
cheese1.Name = "cheese1";
Thread cheese2 = new Thread(() => Milk_Consumption(n, "5", burgers));
cheese2.Name = "cheese2";
Thread burger1 = new Thread(() => Cheese_Consumption(n, burgers));
milk1.Start();
milk2.Start();
milk3.Start();
cheese1.Start();
cheese2.Start();
burger1.Start();
milk1.Join();
milk2.Join();
milk3.Join();
cheese1.Join();
cheese2.Join();
burger1.Join();
Console.WriteLine("Press any key to continue...");
Console.ReadKey();
}
/**********************
* FUNCTION NAME: Milk_Production
* INPUT: Nom2, string, int
* OUTPUT: void
* DESCRIPTION: Producer of milk, used by milk threads
**********************/
public static void Milk_Production(Nom2 obj, string value, int burgers)
{
for (int i = 0; i < burgers * 2; i++)
{
milk_empty.WaitOne();
milk_mut.WaitOne(); //Wait until it is safe to enter
//Critical Section Start****************************
buffer_milk[obj.milk_count] = value;
obj.milk_count++;
//Critical Section End******************************
milk_mut.ReleaseMutex();
if (obj.milk_count % 3 == 0 && obj.milk_count > 0)
{
milk_full.Release(); //Notify procs waiting in milk_full
}
}
}
/**********************
* FUNCTION NAME: Cheese_Consumption
* INPUT: Nom2, int
* OUTPUT: void
* DESCRIPTION: Producer of Burgers,
* Consumer of cheese,
* Prints out Burger ID,
* Used by burger thread
**********************/
public static void Cheese_Consumption(Nom2 obj, int burgers)
{
for (int i = 0; i < burgers; i++)
{
string burgerID = string.Empty;
cheese_full.WaitOne();
cheese_mut.WaitOne();
//Critical Section Start****************************
for (int j = obj.cheese_count - 2; j < obj.cheese_count; j++)
{
burgerID += buffer_cheese[j];
buffer_cheese[j] = "0";
cheese_empty.Release();
}
obj.cheese_count -= 2;
Console.WriteLine("Burger {0}: {1}", i + 1, burgerID);
//Critical Section End******************************
cheese_mut.ReleaseMutex();
}
}
/**********************
* FUNCTION NAME: 0
* INPUT: Nom2. string, int
* OUTPUT: void
* DESCRIPTION: Producer of Cheese,
* Consumer of milk,
* used by cheese threads
**********************/
public static void Milk_Consumption(Nom2 obj, string value, int burgers)
{
for (int k = 0; k < burgers; k++)
{
cheese_empty.WaitOne(); //Producer for cheese
milk_full.WaitOne(); //Consumer for milk
cheese_mut.WaitOne(); //Wait for both cheese and milk buffers to be open
milk_mut.WaitOne();
string cheeseID = string.Empty;
//Critical Section Start****************************
for (int i = obj.milk_count - 3; i < obj.milk_count; i++)
{
cheeseID += buffer_milk[i];
milk_empty.Release(); //Consumer for milk
buffer_milk[i] = "0";
}
obj.milk_count -= 3;
cheeseID += value;
buffer_cheese[obj.cheese_count] = cheeseID;
obj.cheese_count++;
Console.WriteLine("Created Cheese, ID: {0}", cheeseID);
//Critical Section End******************************
cheese_mut.ReleaseMutex();
milk_mut.ReleaseMutex();
if (obj.cheese_count % 2 == 0 && obj.cheese_count > 0)
{
cheese_full.Release(); //Producer for cheese
}
}
}