/// <summary>
/// Removes an item from the buffer.
/// </summary>
/// <returns>The next available item</returns>
public T Dequeue()
{
var next = _consumerCursor.ReadAcquireFence() + 1;
while (_producerCursor.ReadAcquireFence() < next) // makes sure we read the data from _entries after we have read the producer cursor
{
Thread.SpinWait(1);
}
var result = this[next];
_consumerCursor.WriteReleaseFence(next); // makes sure we read the data from _entries before we update the consumer cursor
return(result);
}
/// <summary>
/// Add an item to the buffer
/// </summary>
/// <param name="item"></param>
public void Enqueue(T item)
{
var next = _producerCursor.ReadAcquireFence() + 1;
long wrapPoint = next - _entries.Length;
long min = _consumerCursor.ReadAcquireFence();
while (wrapPoint > min)
{
min = _consumerCursor.ReadAcquireFence();
Thread.SpinWait(1);
}
this[next] = item;
_producerCursor.WriteReleaseFence(next); // makes sure we write the data in _entries before we update the producer cursor
}
public void WriteReleaseFenceChangesInitialValue()
{
_volatile.WriteReleaseFence(NewValue);
Assert.AreEqual(NewValue, _volatile.ReadUnfenced());
}