private PoolSlot <T> Allocate()
{
var obj = ObjectConstructor();
var slot = new PoolSlot <T>(obj, this);
HoldSlotInObject(obj, slot);
return(slot);
}
private bool TryPop(out PoolSlot <T> slot)
{
if (_storage.TryPop(out slot))
{
Interlocked.Decrement(ref _currentCount);
slot.SetStatus(false);
return(true);
}
slot = null;
return(false);
}
/// <summary>
/// Attempts to create, register with status "Out of pool" and return a new instance of <see cref="T"/>
/// </summary>
/// <param name="slot"></param>
/// <returns>true if the operation was successfully, otherwise, false</returns>
protected bool TryAllocatePop(out PoolSlot <T> slot)
{
if (_allocSemaphore.TryTake())
{
slot = Allocate();
return(true);
}
slot = null;
return(false);
}
/// <summary>
/// Puts the object's slot back to the pool.
/// </summary>
/// <param name="slot">The slot to return</param>
/// <exception cref="ArgumentNullException" />
/// <exception cref="ArgumentException" />
/// <exception cref="InvalidOperationException" />
public void Release(PoolSlot <T> slot)
{
if (slot == null)
{
throw new ArgumentNullException("slot");
}
if (slot.GetStatus(this))
{
throw new InvalidOperationException("Specified object is already in the pool");
}
CleanUp(slot.Object);
Push(slot);
}
private void Push(PoolSlot <T> slot)
{
slot.SetStatus(true);
_storage.Push(slot);
Interlocked.Increment(ref _currentCount);
}
protected virtual void HoldSlotInObject(T @object, PoolSlot <T> slot)
{
}
protected sealed override void HoldSlotInObject(T @object, PoolSlot <T> slot)
{
@object.PoolSlot = slot;
}