private Thread CreatePhilosopher(LockCounter eatCounter, object left, object right)
{
var t1 = new Thread(() =>
{
while (eatCounter.Get() < MAX_EAT_COUNT)
{
lock (left)
{
var lockTaken = false;
try
{
Monitor.TryEnter(right, 100, ref lockTaken);
if (lockTaken)
{
Thread.Sleep(100);
eatCounter.IncrementAndGet();
}
}
finally
{
if (lockTaken)
{
Monitor.Exit(right);
}
}
}
Thread.Sleep(100);
}
});
return(t1);
}
public override long ActiveLockCount()
{
LockCounter counter = new LockCounter();
_exclusiveLocks.forEachKeyValue(counter);
_sharedLocks.forEachKeyValue(counter);
return(counter.Locks);
}
public void Setup()
{
var eatCounter = new LockCounter();
var fork1 = new object();
var fork2 = new object();
var fork3 = new object();
var fork4 = new object();
var fork5 = new object();
t1 = CreatePhilosopher(eatCounter, fork1, fork2);
t2 = CreatePhilosopher(eatCounter, fork2, fork3);
t3 = CreatePhilosopher(eatCounter, fork3, fork4);
t4 = CreatePhilosopher(eatCounter, fork4, fork5);
t5 = CreatePhilosopher(eatCounter, fork5, fork1);
}
static void Main(string[] args)
{
Console.WriteLine("syncronization static type");
LockCounter lc = new LockCounter();
Monitor.Enter(lc);
Thread[] threads = new Thread[5];
for (int i = 0; i < threads.Length; ++i)
{
threads[i] = new Thread(lc.UpdateFields);
threads[i].Start();
}
for (int i = 0; i < threads.Length; ++i)
threads[i].Join();
Console.WriteLine("Count: {0}\n\n" , lc.Count);
}
private static void DinningPhilosophersTest()
{
var eatCounter = new LockCounter();
var fork1 = new TMVar <bool>(true);
var fork2 = new TMVar <bool>(true);
var fork3 = new TMVar <bool>(true);
var fork4 = new TMVar <bool>(true);
var fork5 = new TMVar <bool>(true);
var t1 = StartPhilosopher(eatCounter, fork1, fork2);
var t2 = StartPhilosopher(eatCounter, fork2, fork3);
var t3 = StartPhilosopher(eatCounter, fork3, fork4);
var t4 = StartPhilosopher(eatCounter, fork4, fork5);
var t5 = StartPhilosopher(eatCounter, fork5, fork1);
t1.Join();
t2.Join();
t3.Join();
t4.Join();
t5.Join();
}
private static Thread StartPhilosopher(LockCounter eatCounter, TMVar <bool> left, TMVar <bool> right)
{
var t1 = new Thread(() =>
{
while (eatCounter.Get() < MAX_EAT_COUNT)
{
STMSystem.Atomic(() =>
{
if (!left || !right)
{
STMSystem.Retry();
}
left.Value = false;
right.Value = false;
});
Console.WriteLine("Thread: " + Thread.CurrentThread.ManagedThreadId + " eating.");
Thread.Sleep(100);
Console.WriteLine("Eat count: " + eatCounter.IncrementAndGet());
STMSystem.Atomic(() =>
{
left.Value = true;
right.Value = true;
});
Thread.Sleep(100);
}
});
t1.Start();
return(t1);
}