static void Main(string[] args)
{
for (int i = 0; i < 5; i++)
{
studentThreads[i] = new Thread(StudentProblem.Student);
//studentParams[i].Next = studentParams[i];
//studentParams[i].Prev = studentParams[i];
//studentParams[i].Eating = false;
studentParams[i] = new ThreadParams(i, false);
studentThreads[i].Start(studentParams[i]);
}
}
public static void Student(Object o)
{
var r = new Random();
var thread = (ThreadParams)o;
while (true)
{
if (!threadsLearning.Contains(thread.Name))
{
Console.WriteLine(" Student " + thread.Name + " start learning.");
threadsLearning.Add(thread.Name);
}
try
{
toStartLearning.Release();
neighboursEating.Release();
}
catch
{
}
Thread.Sleep(r.Next(2000, 3000));
//проверка за свободни вилици (съседите преди и след него)
//?
//почва да яде
//:
//чака освобождаване на съсед (+1/-1)
int next = thread.Next;
if (next == -1)
{
next = 0;
}
int prev = thread.Prev;
if (prev == -1)
{
prev = Program.studentParams.Length - 1;
}
ThreadParams nextThread = Program.studentParams[next];
ThreadParams prevThread = Program.studentParams[prev];
if (nextThread.Eating || prevThread.Eating)
{
neighboursEating.WaitOne();
}
else
{
threadsLearning.Remove(thread.Name);
thread.Eating = true;
for (int i = 0; i < thread.Name; i++)
{
Console.Write("_");
}
Console.WriteLine("> Student " + thread.Name + " start eating.");
Thread.Sleep(r.Next(2000, 3000));
for (int i = 0; i < thread.Name; i++)
{
Console.Write("_");
}
Console.WriteLine("< Student " + thread.Name + " stop eating.");
thread.Eating = false;
toStartLearning.WaitOne();
}
}
}
