public void TestThreadSafety(int cnt, int tcount, int seconds)
{
using (var pile = new DefaultPile())
{
// pile.SegmentSize = 64 * 1024 * 1024;
pile.Start();
var data = new PilePointer[cnt];
for (var i = 0; i < cnt; i++)
{
data[i] = pile.Put(new byte[0], preallocateBlockSize: Memory.PTR_RAW_BYTE_SIZE + (137 * (i % 17)));
}
var lst = new List <Task>();
long statRead = 0;
long statPut = 0;
long statDelete = 0;
var sw = Stopwatch.StartNew();
var sd = DateTime.UtcNow;
var deleteLock = new object();
for (var i = 0; i < tcount; i++)
{
lst.Add(Task.Factory.StartNew(() =>
{
while (true)
{
var now = DateTime.UtcNow;
if ((now - sd).TotalSeconds > seconds)
{
break;
}
var it = ExternalRandomGenerator.Instance.NextScaledRandomInteger(10, 100);
for (var j = 0; j < it; j++)
{
var pp = data[ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, cnt - 1)];
Aver.IsTrue(pile.Get(pp) is byte[]);
Interlocked.Increment(ref statRead);
}
it = ExternalRandomGenerator.Instance.NextScaledRandomInteger(10, 100);
for (var j = 0; j < it; j++)
{
var pp = data[ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, cnt - 1)];
Aver.IsTrue(pile.Put(pp, new byte[ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 3791)], link: true));
Interlocked.Increment(ref statPut);
}
if (ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 100) > 50 && Monitor.TryEnter(deleteLock))
{
try
{
var newData = (PilePointer[])data.Clone();
it = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, 10 + (cnt / 2));
var toDelete = new List <PilePointer>();
for (var j = 0; j < it; j++)
{
var idx = ExternalRandomGenerator.Instance.NextScaledRandomInteger(0, cnt - 1);
toDelete.Add(newData[idx]);
newData[idx] = pile.Put(new byte[12], preallocateBlockSize: ExternalRandomGenerator.Instance.NextScaledRandomInteger(24, 1024));
}
data = newData;//atomic;
Thread.Sleep(1000);
foreach (var pp in toDelete)
{
Aver.IsTrue(pile.Delete(pp));
Interlocked.Increment(ref statDelete);
}
}
finally
{
Monitor.Exit(deleteLock);
}
}
}
}, TaskCreationOptions.LongRunning));
}
Task.WaitAll(lst.ToArray());
var el = sw.ElapsedMilliseconds;
Console.WriteLine("Read {0:n0} at {1:n0} ops/sec".Args(statRead, statRead / (el / 1000d)));
Console.WriteLine("Put {0:n0} at {1:n0} ops/sec".Args(statPut, statPut / (el / 1000d)));
Console.WriteLine("Deleted {0:n0} at {1:n0} ops/sec".Args(statDelete, statDelete / (el / 1000d)));
for (var i = 0; i < data.Length; i++)
{
Aver.IsTrue(pile.Delete(data[i]));
}
Aver.AreEqual(0, pile.ObjectCount);
Aver.AreEqual(0, pile.ObjectLinkCount);
Aver.AreEqual(0, pile.AllocatedMemoryBytes);
}
}
