public Buffer(int capacity)
{
_bufferLock = new object();
Count = 0;
Capacity = capacity;
Elements = new BufferElement <TValue> [capacity];
for (var index = 0; index < Elements.Length; index++)
{
Elements[index] = new BufferElement <TValue>(this);
}
}
internal void Deactivate(BufferElement <TValue> bufferElement)
{
lock (_bufferLock)
{
if (!bufferElement.Active)
{
return;
}
bufferElement.Active = false;
bufferElement.Dispose();
Count--;
}
}
public BufferElement <TValue> Activate()
{
lock (_bufferLock)
{
if (ActiveCount == Capacity)
{
if (ActiveCount == Count)
{
var elements = new BufferElement <TValue> [Capacity *= 2];
Array.Copy(Elements, elements, Count);
for (var index = Count; index < Capacity; index++)
{
elements[index] = new BufferElement <TValue>(this);
}
Elements = elements;
}
else
{
for (var index = ActiveCount - 1; index >= 0; index--)
{
if (!Elements[index].Active)
{
Swap(index, --ActiveCount);
}
}
}
}
var bufferElement = Elements[Count++];
if (!bufferElement.Active)
{
bufferElement.Active = true;
ActiveCount++;
}
return(bufferElement);
}
}