private static TimeSpan RunConcurrentDiskQFile(string name, int elemCount, int addThCount, int takeThCount, int addSpin, int takeSpin)
{
if (Directory.Exists("dummy"))
{
Directory.Delete("dummy", true);
}
Directory.CreateDirectory("dummy");
DiskQueue <int> col = new DiskQueue <int>("dummy",
new NonPersistentDiskQueueSegmentFactory <int>(10000, "prefix", new ItemSerializer(), 256, 16),
10, true);
//DiskQueue<int> col = new DiskQueue<int>("dummy",
// new PersistentDiskQueueSegmentFactory<int>(10000, "prefix", new ItemSerializer(), false, false, 1000, 64),
// 10, true);
CancellationTokenSource srcCancel = new CancellationTokenSource();
Thread[] addThreads = new Thread[addThCount];
Thread[] takeThreads = new Thread[takeThCount];
int addedElemCount = 0;
List <int> globalList = new List <int>();
Barrier barierStart = new Barrier(1 + addThreads.Length + takeThreads.Length);
Barrier barierAdders = new Barrier(1 + addThreads.Length);
Barrier barierTakers = new Barrier(1 + takeThreads.Length);
Action addAction = () =>
{
barierStart.SignalAndWait();
int index = 0;
while ((index = Interlocked.Increment(ref addedElemCount)) <= elemCount)
{
col.Add(index - 1);
Thread.SpinWait(addSpin);
}
barierAdders.SignalAndWait();
};
Action takeAction = () =>
{
CancellationToken myToken = srcCancel.Token;
List <int> valList = new List <int>(elemCount / takeThCount + 100);
barierStart.SignalAndWait();
try
{
while (!srcCancel.IsCancellationRequested)
{
int val = 0;
val = col.Take(myToken);
valList.Add(val);
Thread.SpinWait(takeSpin);
}
}
catch (OperationCanceledException)
{
}
int val2 = 0;
while (col.TryTake(out val2))
{
valList.Add(val2);
}
barierTakers.SignalAndWait();
lock (globalList)
{
globalList.AddRange(valList);
}
};
for (int i = 0; i < addThreads.Length; i++)
{
addThreads[i] = new Thread(new ThreadStart(addAction));
}
for (int i = 0; i < takeThreads.Length; i++)
{
takeThreads[i] = new Thread(new ThreadStart(takeAction));
}
for (int i = 0; i < takeThreads.Length; i++)
{
takeThreads[i].Start();
}
for (int i = 0; i < addThreads.Length; i++)
{
addThreads[i].Start();
}
barierStart.SignalAndWait();
Stopwatch sw = Stopwatch.StartNew();
barierAdders.SignalAndWait();
srcCancel.Cancel();
barierTakers.SignalAndWait();
sw.Stop();
for (int i = 0; i < addThreads.Length; i++)
{
addThreads[i].Join();
}
for (int i = 0; i < takeThreads.Length; i++)
{
takeThreads[i].Join();
}
globalList.Sort();
if (globalList.Count != elemCount)
{
Console.WriteLine("Bad count");
}
for (int i = 0; i < globalList.Count; i++)
{
if (globalList[i] != i)
{
Console.WriteLine("invalid elements");
break;
}
}
if (name != null)
{
Console.WriteLine(name + ". DiskQFile. Time = " + sw.ElapsedMilliseconds.ToString() + "ms");
}
col.Dispose();
return(sw.Elapsed);
}
