public static void driver()
{
for (int i = 1; i <= accounts.Length; i++)
{
accounts[i-1] = new BankAccount(i, SimulationProperties.INITIAL_AMT);
}
Thread[] threads = new Thread[SimulationProperties.NumberOfThreads];
ThreadStart threadProc = new ThreadStart(Simulate);
for (int i = 1; i <= threads.Length; i++)
{
threads[i - 1] = new Thread(threadProc);
threads[i - 1].Name = String.Format("TX-{0}", i);
threads[i - 1].Start();
}
Thread.Sleep(SimulationProperties.SimulationLength);
IsSimulationOver = true;
for (int i = 0; i < threads.Length; i++)
{
threads[i].Join();
}
VerifyAccoutns();
}
public void Transfer(BankAccount otherAcct, decimal money)
{
Mutex[] mut = { this._lockMutex, otherAcct._lockMutex};
Console.WriteLine("{3} Transfer {2:C0} from AccID: {0} to AccID: {1}", otherAcct.acctID, this.acctID, money, Thread.CurrentThread.Name);
if (WaitHandle.WaitAll(mut))
{
try
{
Thread.Sleep(100);
{
otherAcct.Debit(money);
this.Credit(money);
}
}
finally
{
foreach (Mutex m in mut)
{
m.ReleaseMutex();
}
}
}
}
public void TransferUsingLockOrdering(BankAccount otherAcct, decimal money)
{
Object firstlock;
Object secondlock;
ChooseLocks(this, otherAcct, out firstlock, out secondlock);
Console.WriteLine("{3} Transfer {2:C0} from AccID: {0} to AccID: {1}", otherAcct.acctID, this.acctID, money, Thread.CurrentThread.Name);
lock (firstlock)
{
Thread.Sleep(100);
lock (secondlock)
{
otherAcct.Debit(money);
this.Credit(money);
}
}
}
private void ChooseLocks(BankAccount acctOne, BankAccount acctTwo, out object firstlock, out object secondlock)
{
if (acctOne.acctID < acctTwo.acctID)
{
firstlock = acctOne._lock;
secondlock = acctTwo._lock;
}
else
{
firstlock = acctTwo._lock;
secondlock = acctOne._lock;
}
}