/// <summary>
/// 取消订阅
/// </summary>
/// <param name="item">订阅项</param>
public static void UnSubscibe(SubscibeItem item)
{
if (item == null)
{
return;
}
SubscibeGroup subscibeGroup;
if (!_subscibeItemDic.TryGetValue(item.Topic, out subscibeGroup))
{
return;
}
subscibeGroup.Remove(item);
//如果订阅组内的订阅项数为0，则移除该订阅组
if (subscibeGroup.Count == 0)
{
lock (_subscibeItemDicLock)
{
if (subscibeGroup.Count == 0)
{
subscibeGroup.Dispose();
_subscibeItemDic.TryRemove(item.Topic, out subscibeGroup);
}
}
}
}
/// <summary>
/// 移除订阅项
/// </summary>
/// <param name="item">订阅项</param>
/// <returns>移除结果</returns>
public bool Remove(SubscibeItem item)
{
if (item == null)
{
return(false);
}
Monitor.Enter(this._subscibeItemListMonitor);
try
{
return(this._subscibeItemList.Remove(item));
}
finally
{
Monitor.Exit(this._subscibeItemListMonitor);
}
}
/// <summary>
/// 订阅
/// </summary>
/// <param name="item">订阅项</param>
public static void Subscibe(SubscibeItem item)
{
SubscibeGroup subscibeGroup;
if (!_subscibeItemDic.TryGetValue(item.Topic, out subscibeGroup))
{
lock (_subscibeItemDicLock)
{
if (!_subscibeItemDic.TryGetValue(item.Topic, out subscibeGroup))
{
subscibeGroup = new SubscibeGroup(item.Topic);
_subscibeItemDic.TryAdd(item.Topic, subscibeGroup);
}
}
}
subscibeGroup.Add(item);
}
/// <summary>
/// 添加订阅项
/// </summary>
/// <param name="item">订阅项</param>
public void Add(SubscibeItem item)
{
if (item == null)
{
return;
}
Monitor.Enter(this._subscibeItemListMonitor);
try
{
if (!this._subscibeItemList.Contains(item))
{
this._subscibeItemList.Add(item);
}
}
finally
{
Monitor.Exit(this._subscibeItemListMonitor);
}
}