public void WithTupleReturns()
{
// These vars basically used to ensure the compiler doesn't optimise away the return values entirely
var longResultVar = 0L;
var intResultVar = 0;
var refResultVar = "";
var valResultVar = 0L;
for (var i = 0; i < NumIterations; ++i)
{
longResultVar += _atomicLong.Increment().CurrentValue;
longResultVar += _atomicLong.Decrement().CurrentValue;
longResultVar += _atomicLong.Exchange(i).PreviousValue;
intResultVar += _atomicInt.Increment().CurrentValue;
intResultVar += _atomicInt.Decrement().CurrentValue;
intResultVar += _atomicInt.TryExchange(i, i - 1).ValueWasSet ? 1 : 0;
var newUser = new User(i, "Xenoprimate");
refResultVar = _atomicRef.Exchange(newUser).PreviousValue.Name;
refResultVar = _atomicRef.TryExchange(new User(i * 2, "Ben"), newUser).ValueWasSet ? refResultVar : String.Empty;
valResultVar += _atomicVal8.Exchange(new Val8(i)).PreviousValue.A;
valResultVar += _atomicVal16.TryExchange(new Val16(i + 1), new Val16(i)).ValueWasSet ? 0 : 1;
valResultVar += _atomicVal32.Exchange(new Val32(i)).PreviousValue.A;
valResultVar += _atomicVal64.TryExchange(new Val64(i + 1), new Val64(i)).ValueWasSet ? 0 : 1;
SimulateContention(ContentionLevel);
}
if (longResultVar != 1499996500003L || intResultVar != -728379967 || !refResultVar.Equals("Ben", StringComparison.Ordinal) || valResultVar != 999997000002L)
{
throw new ApplicationException("This will never happen; it's just here to force the compiler not to optimise away these vars. These results were measured before.");
}
}
void WithAtomicVal_Entry()
{
for (var i = 0; i < NumIterations; i++)
{
var prevVal = _atomicVal.Exchange(new Vector2(i, i)).PreviousValue;
var curVal = _atomicVal.TryExchange(new Vector2(prevVal.X + 2, prevVal.Y + 2), new Vector2(i, i)).CurrentValue;
BenchmarkUtils.SimulateContention(ContentionLevel);
prevVal = _atomicVal.Exchange(new Vector2(curVal.X + 1, curVal.Y + 1)).PreviousValue;
curVal = _atomicVal.TryExchange(new Vector2(prevVal.X + 2, prevVal.Y + 2), new Vector2(i, i)).CurrentValue;
BenchmarkUtils.SimulateContention(ContentionLevel);
prevVal = _atomicVal.Exchange(new Vector2(curVal.X + 1, curVal.Y + 1)).PreviousValue;
_atomicVal.TryExchange(new Vector2(prevVal.X + 2, prevVal.Y + 2), new Vector2(i, i));
BenchmarkUtils.SimulateContention(ContentionLevel);
}
}
void WithAtomicVal_Entry()
{
var result = 0L;
for (var i = 0; i < NumIterations; i++)
{
if (_atomicVal.Value.A < i)
{
result += _atomicVal.Get().A;
}
else
{
result -= _atomicVal.Get().A;
}
BenchmarkUtils.SimulateContention(ContentionLevel);
var curVal = _atomicVal.Get();
BenchmarkUtils.SimulateContention(ContentionLevel);
if (curVal.A >= _atomicVal.Get().A)
{
if (_atomicVal.Get().B > _atomicVal.Get().C)
{
result += _atomicVal.Get().C;
}
else
{
result += _atomicVal.Get().B;
}
}
else
{
if (_atomicVal.Get().B > _atomicVal.Get().C)
{
result += _atomicVal.Get().B;
}
else
{
result += _atomicVal.Get().C;
}
}
if (_atomicVal.Value.A < i)
{
result += _atomicVal.Get().A;
}
else
{
result -= _atomicVal.Get().A;
}
curVal = _atomicVal.Get();
if (curVal.A >= _atomicVal.Get().A)
{
if (_atomicVal.Get().B > _atomicVal.Get().C)
{
result += _atomicVal.Get().C;
}
else
{
result += _atomicVal.Get().B;
}
}
else
{
if (_atomicVal.Get().B > _atomicVal.Get().C)
{
result += _atomicVal.Get().B;
}
else
{
result += _atomicVal.Get().C;
}
}
BenchmarkUtils.SimulateContention(ContentionLevel);
if (i % IterationsPerBarrier == 0)
{
if (_atomicVal.Get().B < curVal.A)
{
result += _atomicVal.TryExchange(new Val64(curVal.A - 1L), curVal).CurrentValue.A;
}
else
{
result += _atomicVal.TryExchange(new Val64(curVal.A + 1L), curVal).CurrentValue.A;
}
_atomicValSyncBarrier.SignalAndWait();
}
BenchmarkUtils.SimulateContention(ContentionLevel);
}
if (result == 0L)
{
Console.Beep(1000, 100);
}
}
void WithAtomicVal_Entry()
{
var result = 0L;
for (var i = 0; i < NumIterations; i++)
{
if (_atomicVal.Value.L < i)
{
result += _atomicVal.Get().L;
}
else
{
result -= _atomicVal.Get().L;
}
BenchmarkUtils.SimulateContention(ContentionLevel);
var curVal = _atomicVal.Get();
BenchmarkUtils.SimulateContention(ContentionLevel);
if (curVal.L >= _atomicVal.Get().L)
{
if (_atomicVal.Get().X > _atomicVal.Get().Y)
{
result += (long)_atomicVal.Get().Y;
}
else
{
result += (long)_atomicVal.Get().X;
}
}
else
{
if (_atomicVal.Get().X > _atomicVal.Get().Y)
{
result += (long)_atomicVal.Get().X;
}
else
{
result += (long)_atomicVal.Get().Y;
}
}
if (_atomicVal.Value.L < i)
{
result += _atomicVal.Get().L;
}
else
{
result -= _atomicVal.Get().L;
}
curVal = _atomicVal.Get();
if (curVal.L >= _atomicVal.Get().L)
{
if (_atomicVal.Get().X > _atomicVal.Get().Y)
{
result += (long)_atomicVal.Get().Y;
}
else
{
result += (long)_atomicVal.Get().X;
}
}
else
{
if (_atomicVal.Get().X > _atomicVal.Get().Y)
{
result += (long)_atomicVal.Get().X;
}
else
{
result += (long)_atomicVal.Get().Y;
}
}
BenchmarkUtils.SimulateContention(ContentionLevel);
if (i % IterationsPerBarrier == 0)
{
if (_atomicVal.Get().X < curVal.L)
{
result += _atomicVal.TryExchange(new Vector2(curVal.L - 1L), curVal).CurrentValue.L;
}
else
{
result += _atomicVal.TryExchange(new Vector2(curVal.L + 1L), curVal).CurrentValue.L;
}
_atomicValSyncBarrier.SignalAndWait();
}
BenchmarkUtils.SimulateContention(ContentionLevel);
}
if (result == 0L)
{
Console.Beep(1000, 100);
}
}