protected void InitItems(int initialInstances)
{
if (initialInstances <= 0)
{
if (null != _logger)
{
_logger.Error("实例化对象池项时发生异常：对象池长度不能为空");
}
throw new ArgumentException("对象池长度不能为空！", "initialInstances");
}
for (int i = 0; i < initialInstances; ++i)
{
_free.Add(_factory.CreateObject());
}
}
public Object BorrowObject()
{
Object currObj = null;
if (0 != m_pool.Count)
{
currObj = m_pool.Pop();
}
else
{
if (m_activeNum < m_maxNum)
{
if (null == factory)
{
throw new System.Exception();
}
currObj = factory.CreateObject() as GameObject;
if (null == currObj)
{
throw new System.Exception("obj is null");
}
}
else
{
//这里标记为空
return(null);
}
}
++m_activeNum;
return(currObj);
}
/// <summary>
/// 初始化池
/// </summary>
protected virtual void Init(int size)
{
for (int i = 0; i < size; i++)
{
free.Add(factory.CreateObject());
}
}
internal ObjectPoolItem <T> CreateObject(CancellationToken cancellationToken)
{
ObjectPoolItem <T> item = null;
while (true)
{
if (_idleItems.Count > 0)
{
lock (_idleItems)
{
if (_idleItems.Count > 0)
{
var last = _idleItems.Last;
_idleItems.RemoveLast();
item = last.Value;
Log.Trace("Item(key:{0}) reused from object pool. idle: {1}, active: {2}.", item.Key, _idleItems.Count, _activeItems.Count);
}
}
lock (_activeItems)
{
_activeItems.Add(item.Key, item);
}
_factory.InitializeObject(item.Value);
break;
}
else
{
var count = _idleItems.Count + _activeItems.Count;
if (count < MaxSize)
{
var creationDate = LocalTime.Default.Now;
var value = _factory.CreateObject();
var key = Interlocked.Increment(ref _key);
item = new ObjectPoolItem <T>(key, value, creationDate);
lock (_activeItems)
{
_activeItems.Add(item.Key, item);
}
Log.Trace("New item(key:{0}) created in object pool. idle: {1}, active: {2}.", key, _idleItems.Count, _activeItems.Count);
break;
}
else
{
Log.Trace("object pool is active. Waiting for idle item...");
_idleEvent.Reset();
WaitHandle[] waitHandles =
{
cancellationToken.WaitHandle,
_idleEvent
};
var i = WaitHandle.WaitAny(waitHandles, 30000, false);
if (i == 0)
{
break;
}
else if (i == 1)
{
}
else if (i == WaitHandle.WaitTimeout)
{
throw new ApplicationException("ObjectPool.CreateObject timeout.");
}
}
}
}
return(item);
}
