static void Main(string[] args)
{
var sticks = new Chopstick[5];
for (int i = 0; i < 5; i++)
{
sticks[i] = new Chopstick();
}
var philosophers = new Philosopher[5];
for (int i = 0; i < 5; i++)
{
philosophers[i] = new Philosopher(sticks[i],sticks[(i + 1) % 5],(i + 1).ToString());
}
var threads = new Thread[5];
for (int i = 0; i < 5; i++)
{
threads[i] = new Thread(philosophers[i].Run);
}
foreach (var thread in threads)
{
thread.Start();
}
threads[0].Join();
}
static void Main(string[] args)
{
var sticks = new Chopstick[5];
for (int i = 0; i < 5; i++)
{
sticks[i] = new Chopstick();
}
var philosophers = new Philosopher[5];
for (int i = 0; i < 5; i++)
{
philosophers[i] = new Philosopher(sticks[i], sticks[(i + 1) % 5], (i + 1).ToString());
}
var threads = new Thread[5];
for (int i = 0; i < 5; i++)
{
threads[i] = new Thread(philosophers[i].Run);
}
foreach (var thread in threads)
{
thread.Start();
}
threads[0].Join();
}
public Philosopher(Chopstick left, Chopstick right,string name)
{
_left = left;
_right = right;
_name = name;
_random = new Random();
}
//constructor - assign ID, name, and left and right chopstick for the philosopher
public Philosopher(int nId, String sPName, Chopstick cLeft, Chopstick cRight)
{
nMyID = nId;
sName = sPName;
cMyLeft = cLeft;
cMyRight = cRight;
}
public Philosopher(Chopstick left, Chopstick right, string name)
{
_left = left;
_right = right;
_name = name;
_random = new Random();
}
//Responds to a request for the chopstick
void GiveChopstick(Chopstick chopstick)
{
if (chopstick.pHasIt != this)
{
return; //doesn't have it
}
if (chopstick.bDirty) //used - philosopher has eaten (or initial state) - will give it
{
Console.WriteLine("{0} accepted request for chopstick number {1} from {2}", sName, chopstick.nChopstickID, chopstick.Contender(this).sName);
lock (chopstick)
{
chopstick.bDirty = false;
chopstick.pHasIt = null;
}
Release(chopstick, chopstick.Contender(this));
}
else //clean - decline, but will note the request
{
Console.WriteLine("{0} declined request for chopstick number {1} from {2}", sName, chopstick.nChopstickID, chopstick.Contender(this).sName);
if (chopstick == cMyLeft)
{
cGiveToL = chopstick; //note that it was asked for
}
else
{
cGiveToR = chopstick;
}
}
}
static void Main()
{
Philosopher[] philosophers = new Philosopher[nDimension];
Chopstick[] chopsticks = new Chopstick[nDimension];
Thread[] philosopherThread = new Thread[nDimension];
String sTemp;
Random rnd = new Random();
int randomNumber;
for (int i = 0; i < nDimension; i++)
{
chopsticks[i] = new Chopstick(i);
}
for (int i = 0; i < nDimension; i++)
{
sTemp = "";
Chopstick cLeft = chopsticks[getLeft(i)];
Chopstick cRight = chopsticks[getRight(i)];
while (sTemp == "") //name all philosophers
{
randomNumber = rnd.Next(111);
if (top111[randomNumber] != "")
{
sTemp = top111[randomNumber];
top111[randomNumber] = "";
}
}
philosophers[i] = new Philosopher(i, sTemp, cLeft, cRight);
cLeft.pNeighborR = philosophers[i]; //right neighbor of the left chopstick is the philosopher himself
cRight.pNeighborL = philosophers[i]; //left neighbor of the right chopstick is the philosopher himself
philosopherThread[i] = new Thread(philosophers[i].Engage);
}
foreach (Chopstick chopstick in chopsticks)
{
if (chopstick.pNeighborL.nMyID > chopstick.pNeighborR.nMyID)
{
chopstick.pHasIt = chopstick.pNeighborR; //Philosopher with smaller ID gets it
}
else
{
chopstick.pHasIt = chopstick.pNeighborL;
}
}
foreach (Philosopher philosopher in philosophers)
{
philosopher.Initialize();
}
for (int i = 0; i < nDimension; i++)
{
philosopherThread[i].Start(); //start each thread
}
for (int i = 0; i < nDimension; i++)
{
philosopherThread[i].Join();
}
Console.ReadLine();
}
//Philosopher takes the chopstick
void TakeChopstick(Chopstick chopstick, Philosopher pWho)
{
if (pWho != this)
{
return;
}
if (chopstick == cMyLeft)
{
cTakeFromL = null; //have taken it
}
else
{
cTakeFromR = null;
}
lock (chopstick)
{
chopstick.pHasIt = this; //it's mine
}
Console.WriteLine("{0} takes chopstick number {1} from {2} and has {3} chopstick(s)", sName, chopstick.nChopstickID, chopstick.Contender(this).sName, HaveChopsticks());
}
static void Main()
{
Philosopher[] philosophers = new Philosopher[nDimension];
Chopstick[] chopsticks = new Chopstick[nDimension];
Thread[] philosopherThread = new Thread[nDimension];
String sTemp;
Random rnd = new Random();
int randomNumber;
for (int i = 0; i < nDimension; i++) chopsticks[i] = new Chopstick(i);
for (int i = 0; i < nDimension; i++)
{
sTemp = "";
Chopstick cLeft = chopsticks[getLeft(i)];
Chopstick cRight = chopsticks[getRight(i)];
while (sTemp == "") //name all philosophers
{
randomNumber = rnd.Next(111);
if (top111[randomNumber] != "")
{
sTemp = top111[randomNumber];
top111[randomNumber] = "";
}
}
philosophers[i] = new Philosopher(i, sTemp, cLeft, cRight);
cLeft.pNeighborR = philosophers[i]; //right neighbor of the left chopstick is the philosopher himself
cRight.pNeighborL = philosophers[i]; //left neighbor of the right chopstick is the philosopher himself
philosopherThread[i] = new Thread(philosophers[i].Engage);
}
foreach (Chopstick chopstick in chopsticks)
{
if (chopstick.pNeighborL.nMyID > chopstick.pNeighborR.nMyID) chopstick.pHasIt = chopstick.pNeighborR; //Philosopher with smaller ID gets it
else chopstick.pHasIt = chopstick.pNeighborL;
}
foreach (Philosopher philosopher in philosophers) philosopher.Initialize();
for (int i = 0; i < nDimension; i++) philosopherThread[i].Start(); //start each thread
for (int i = 0; i < nDimension; i++) philosopherThread[i].Join();
Console.ReadLine();
}
//Philosopher takes the chopstick
void TakeChopstick(Chopstick chopstick, Philosopher pWho)
{
if (pWho != this) return;
if (chopstick == cMyLeft) cTakeFromL = null; //have taken it
else cTakeFromR = null;
lock (chopstick)
{
chopstick.pHasIt = this; //it's mine
}
Console.WriteLine("{0} takes chopstick number {1} from {2} and has {3} chopstick(s)", sName, chopstick.nChopstickID, chopstick.Contender(this).sName, HaveChopsticks());
}
//Responds to a request for the chopstick
void GiveChopstick(Chopstick chopstick)
{
if (chopstick.pHasIt != this) return; //doesn't have it
if (chopstick.bDirty) //used - philosopher has eaten (or initial state) - will give it
{
Console.WriteLine("{0} accepted request for chopstick number {1} from {2}", sName, chopstick.nChopstickID, chopstick.Contender(this).sName);
lock (chopstick)
{
chopstick.bDirty = false;
chopstick.pHasIt = null;
}
Release(chopstick, chopstick.Contender(this));
}
else //clean - decline, but will note the request
{
Console.WriteLine("{0} declined request for chopstick number {1} from {2}", sName, chopstick.nChopstickID, chopstick.Contender(this).sName);
if (chopstick == cMyLeft) cGiveToL = chopstick; //note that it was asked for
else cGiveToR = chopstick;
}
}
private int turnsLeft = 15; //turns to eat
#endregion Fields
#region Constructors
//constructor - assign ID, name, and left and right chopstick for the philosopher
public Philosopher(int nId, String sPName, Chopstick cLeft, Chopstick cRight)
{
nMyID = nId;
sName = sPName;
cMyLeft = cLeft;
cMyRight = cRight;
}
