private void EnsureCapacity()
{
if (myItems == null)
{
myItems = new ValueLifetimed <T> [1];
}
if (mySize < myItems.Length)
{
return;
}
// we have to make new array ALWAYS at this point, because this method could be called during enumeration and we want enumeration to work in a snapshot fashion
var countAfterCleaning = 0;
var markerDecrement = 0;
var newItems = new ValueLifetimed <T> [mySize * 2]; //Count can't be zero here
for (var i = 0; i < mySize; i++)
{
if (myItems[i].Lifetime.IsAlive)
{
newItems[countAfterCleaning++] = myItems[i];
}
else if (i < Marker)
{
markerDecrement++;
}
}
mySize = countAfterCleaning;
Marker -= markerDecrement;
myItems = newItems;
}
public void AddPriorityItem(ValueLifetimed <T> item)
{
EnsureCapacity();
Array.Copy(myItems, Marker, myItems, Marker + 1, mySize - Marker);
myItems[Marker++] = item;
mySize++;
}
public bool MoveNext()
{
while (++myPos < mySize)
{
ref var item = ref myItems[myPos];
if (item.Lifetime.IsNotAlive)
{
continue;
}
myCurValue = item;
// double-check `IsAlive` because myCurValue may be partially cleared if ClearValuesIfNotAlive was called at the same time
Memory.Barrier(); // to suppress reordering
if (item.Lifetime.IsAlive)
{
return(true);
}
}
public void Add(ValueLifetimed <T> item)
{
EnsureCapacity();
myItems[mySize++] = item;
}