public void BasicMultiThreadedCounts()
{
var obj = new object();
var counter = new ReferenceCounter();
var t1 = Task.Run(() => {
for (int i = 0; i < 100000; i++)
{
counter.AddReference(obj);
counter.AddReference(obj);
counter.Release(obj);
counter.Release(obj);
}
});
var t2 = Task.Run(() => {
for (int i = 0; i < 100000; i++)
{
counter.AddReference(obj);
counter.AddReference(obj);
counter.Release(obj);
counter.Release(obj);
}
});
Task.WaitAll(t1, t2);
Assert.Equal(0, (int)counter.GetGlobalCount(obj));
}
public void ResizingThreadTableWorks()
{
var defaultThreadTableSize = Environment.ProcessorCount;
var threads = new List<WaitHandle>();
var counter = new ReferenceCounter();
var obj = new object();
for (int threadNumber = 0; threadNumber < defaultThreadTableSize * 2; threadNumber++)
{
var thread = new Thread(new ThreadStart(() =>
{
var handle = new AutoResetEvent(false);
threads.Add(handle);
for (int itteration = 0; itteration < 100; itteration++)
{
counter.AddReference(obj);
Thread.Sleep(10);
counter.Release(obj);
}
handle.Set();
}));
thread.Start();
}
WaitHandle.WaitAll(threads.ToArray());
Assert.Equal(0, (int)counter.GetGlobalCount(0));
}
public void BasicSingleThreadedCounts()
{
var obj = new object();
var counter = new ReferenceCounter();
Assert.Equal(0, (int)counter.GetGlobalCount(obj));
counter.AddReference(obj);
Assert.Equal(1, (int)counter.GetGlobalCount(obj));
counter.AddReference(obj);
Assert.Equal(2, (int)counter.GetGlobalCount(obj));
counter.Release(obj);
Assert.Equal(1, (int)counter.GetGlobalCount(obj));
counter.Release(obj);
Assert.Equal(0, (int)counter.GetGlobalCount(obj));
}
public void ResizingObjectTableWorks()
{
var defaultObjectTableSize = 16;
var objects = new List<object>();
var counter = new ReferenceCounter();
for (int objectNumber = 0; objectNumber < defaultObjectTableSize * 2; objectNumber++)
{
var obj = new object();
counter.AddReference(obj);
objects.Add(obj);
}
foreach(var obj in objects)
{
counter.Release(obj);
}
foreach (var obj in objects)
{
Assert.Equal(0, (int)counter.GetGlobalCount(obj));
}
}