private bool GetDataBlockFromCache(long lk, out DataBlock block)
{
if (_blockCache.TryGetValue(lk, out var value))
{
if (value is DataBlock b)
{
block = b;
return(true);
}
FailWrongCacheBehavior();
}
block = null;
return(false);
}
private static void LWD(int count, int mult, LockedWeakDictionary <long> lockedWeakDictionary)
{
using (Benchmark.Run("LWD", count * mult))
{
for (int i = 0; i < count * mult; i++)
{
if (lockedWeakDictionary.TryGetValue(i / mult, out var val))
{
//sum6 += (int)val;
}
else
{
Assert.Fail();
}
}
}
}
public void WeakReferenceLookup()
{
// How bad is WR lookup
var d = new FastDictionary <long, object>();
// var ds = new DictionarySlim<long, object>();
var lockedWeakDictionary = new LockedWeakDictionary <long>();
var indexedLockedWeakDictionary = new IndexedLockedWeakDictionary <long, Dummy>();
var cd = new ConcurrentDictionary <long, object>();
var wcd = new ConcurrentDictionary <long, WeakReference <object> >();
//var wcd2 = new ConcurrentDictionary<long, WeakReference>();
var wcd3 = new ConcurrentDictionary <long, GCHandle>();
var locker = 0L;
var count = 1_000;
for (int i = 0; i < count; i++)
{
var obj = (object)new Dummy();
d.Add(i, obj);
// ds.GetOrAddValueRef(i) = obj;
cd.TryAdd(i, obj);
wcd.TryAdd(i, new WeakReference <object>(obj));
//wcd2.TryAdd(i, new WeakReference(obj));
var h = GCHandle.Alloc(obj, GCHandleType.Weak);
wcd3.TryAdd(i, h);
lockedWeakDictionary.TryAdd(i, obj);
// lockedWeakDictionary.TryAdd(i, obj);
}
var mult = 100_000;
var sum1 = 0.0;
using (Benchmark.Run("CD", count * mult))
{
for (int i = 0; i < count * mult; i++)
{
if (cd.TryGetValue(i / mult, out var obj))
{
//sum1 += (int)obj;
}
else
{
Assert.Fail();
}
}
}
var sum2 = 0.0;
using (Benchmark.Run("WCD", count * mult))
{
// Not so bad, this just needs to save something more in other places
for (int i = 0; i < count * mult; i++)
{
wcd.TryGetValue(i / mult, out var wr);
if (wr.TryGetTarget(out var tgt))
{
//sum2 += (int)tgt;
}
else
{
Assert.Fail();
}
}
}
Assert.AreEqual(sum1, sum2);
//var sum4 = 0.0;
//using (Benchmark.Run("WCD2", count * mult))
//{
// // Not so bad, this just needs to save something more in other places
// for (int i = 0; i < count * mult; i++)
// {
// wcd2.TryGetValue(i / mult, out var wr2);
// if (wr2.Target != null)
// {
// sum4 += (int)wr2.Target;
// }
// else
// {
// Assert.Fail();
// }
// }
//}
//Assert.AreEqual(sum1, sum4);
var sum5 = 0.0;
using (Benchmark.Run("WCD H", count * mult))
{
// Not so bad, this just needs to save something more in other places
for (int i = 0; i < count * mult; i++)
{
wcd3.TryGetValue(i / mult, out var wr2);
if (wr2.Target is Dummy val)
{
//sum5 += val;
}
//else
//{
// Assert.Fail();
//}
}
}
Assert.AreEqual(sum1, sum5);
//var sum3 = 0.0;
//using (Benchmark.Run("LD", count * mult))
//{
// for (int i = 0; i < count * mult; i++)
// {
// lock (d)
// {
// if (d.TryGetValue(i / mult, out var obj))
// {
// sum3 += (int)obj;
// }
// else
// {
// Assert.Fail();
// }
// }
// }
//}
var sum6 = 0.0;
using (Benchmark.Run("LWD", count * mult))
{
for (int i = 0; i < count * mult; i++)
{
if (lockedWeakDictionary.TryGetValue(i / mult, out var val))
{
//sum6 += (int)val;
}
else
{
Assert.Fail();
}
}
}
//var sum7 = 0.0;
//using (Benchmark.Run("ILWD", count * mult))
//{
// for (int i = 0; i < count * mult; i++)
// {
// if (indexedLockedWeakDictionary.TryGetValue(i / mult, out var val))
// {
// //sum7 += (int)val.StorageIndex;
// }
// else
// {
// Assert.Fail();
// }
// }
//}
Benchmark.Dump();
Console.WriteLine(d.Count);
}