public void CheckNoCustomEqualityForUnmanagedVals()
{
var initialVal = new DummyImmutableValAlphaOnlyEquatable(10, 20);
var atomic = new LockFreeValue <DummyImmutableValAlphaOnlyEquatable>(initialVal);
Assert.False(atomic.TryExchange(new DummyImmutableValAlphaOnlyEquatable(), new DummyImmutableValAlphaOnlyEquatable(initialVal.Alpha, initialVal.Bravo + 20)).ValueWasSet);
}
void WithAtomicVal_EntryA()
{
while (_atomicValRemainingThreadCount > 0)
{
var curVal = _atomicVal.Value;
_atomicVal.TryExchange(new Vector2(curVal.Y, curVal.X), curVal);
BenchmarkUtils.SimulateContention(ContentionLevel);
}
}
void WithAtomicValUnmanaged_Entry()
{
for (var i = 0; i < NumIterations; i++)
{
var prevVal = _atomicValUnmanaged.Exchange(new Vector2(i, i)).PreviousValue;
var curVal = _atomicValUnmanaged.TryExchange(new Vector2(prevVal.X + 2, prevVal.Y + 2), new Vector2(i, i)).CurrentValue;
BenchmarkUtils.SimulateContention(ContentionLevel);
prevVal = _atomicValUnmanaged.Exchange(new Vector2(curVal.X + 1, curVal.Y + 1)).PreviousValue;
curVal = _atomicValUnmanaged.TryExchange(new Vector2(prevVal.X + 2, prevVal.Y + 2), new Vector2(i, i)).CurrentValue;
BenchmarkUtils.SimulateContention(ContentionLevel);
prevVal = _atomicValUnmanaged.Exchange(new Vector2(curVal.X + 1, curVal.Y + 1)).PreviousValue;
_atomicValUnmanaged.TryExchange(new Vector2(prevVal.X + 2, prevVal.Y + 2), new Vector2(i, i));
BenchmarkUtils.SimulateContention(ContentionLevel);
}
}
void WithAtomicValUnmanaged_Entry()
{
var result = 0L;
for (var i = 0; i < NumIterations; i++)
{
if (_atomicValUnmanaged.Value.L < i)
{
result += _atomicValUnmanaged.Get().L;
}
else
{
result -= _atomicValUnmanaged.Get().L;
}
BenchmarkUtils.SimulateContention(ContentionLevel);
var curVal = _atomicValUnmanaged.Get();
BenchmarkUtils.SimulateContention(ContentionLevel);
if (curVal.L >= _atomicValUnmanaged.Get().L)
{
if (_atomicValUnmanaged.Get().X > _atomicValUnmanaged.Get().Y)
{
result += (long)_atomicValUnmanaged.Get().Y;
}
else
{
result += (long)_atomicValUnmanaged.Get().X;
}
}
else
{
if (_atomicValUnmanaged.Get().X > _atomicValUnmanaged.Get().Y)
{
result += (long)_atomicValUnmanaged.Get().X;
}
else
{
result += (long)_atomicValUnmanaged.Get().Y;
}
}
if (_atomicValUnmanaged.Value.L < i)
{
result += _atomicValUnmanaged.Get().L;
}
else
{
result -= _atomicValUnmanaged.Get().L;
}
curVal = _atomicValUnmanaged.Get();
if (curVal.L >= _atomicValUnmanaged.Get().L)
{
if (_atomicValUnmanaged.Get().X > _atomicValUnmanaged.Get().Y)
{
result += (long)_atomicValUnmanaged.Get().Y;
}
else
{
result += (long)_atomicValUnmanaged.Get().X;
}
}
else
{
if (_atomicValUnmanaged.Get().X > _atomicValUnmanaged.Get().Y)
{
result += (long)_atomicValUnmanaged.Get().X;
}
else
{
result += (long)_atomicValUnmanaged.Get().Y;
}
}
BenchmarkUtils.SimulateContention(ContentionLevel);
if (i % IterationsPerBarrier == 0)
{
if (_atomicValUnmanaged.Get().X < curVal.L)
{
result += _atomicValUnmanaged.TryExchange(new Vector2(curVal.L - 1L), curVal).CurrentValue.L;
}
else
{
result += _atomicValUnmanaged.TryExchange(new Vector2(curVal.L + 1L), curVal).CurrentValue.L;
}
_atomicValUnmanagedSyncBarrier.SignalAndWait();
}
BenchmarkUtils.SimulateContention(ContentionLevel);
}
if (result == 0L)
{
Console.Beep(1000, 100);
}
}