public ExpireMemoryCache(TimeSpan expireTime)
{
this.ExpireTime = expireTime;
_callback = GuidExpireCallback.Create(delegate
{
if (!_state)
{
_lock.EnterReadLock();
List <TKey> list = new List <TKey>();
foreach (var item in _map)
{
if (item.Value.Expire)
{
if (OnClearExpire != null)
{
OnClearExpire(this, new ClearExpireEventArgs <TValue>(item.Value.Item));
}
list.Add(item.Key);
}
}
_lock.ExitReadLock();
_lock.EnterWriteLock();
foreach (var item in list)
{
_map.Remove(item);
}
_lock.ExitWriteLock();
}
});
CacheFactory.AddCallback(_callback);
}
internal static void AddCallback(IExpireCallback callback)
{
lock (lockObj)
{
int count = _callbacks.Count;
_callbacks.AddOrUpdate(callback.Key, callback.Callback, (k, a) => callback.Callback);
if (count == 0 && _callbacks.Count > count)
{
ResetTimer();
}
}
}
internal static void AddCallback(IExpireCallback callback)
{
lock (lockObj)
{
int count = _callbacks.Count;
_callbacks.AddOrUpdate(callback.Key, callback.Callback, (k, a) => callback.Callback);
if (count == 0 && _callbacks.Count > count)
{
ResetTimer();
}
}
}
internal static void RemoveCallback(IExpireCallback callback)
{
lock (lockObj)
{
int count = _callbacks.Count;
Action tempCallback;
_callbacks.TryRemove(callback.Key, out tempCallback);
if (count > 0 && _callbacks.Count == 0)
{
ResetTimer();
}
}
}
internal static void RemoveCallback(IExpireCallback callback)
{
lock (lockObj)
{
int count = _callbacks.Count;
Action tempCallback;
_callbacks.TryRemove(callback.Key, out tempCallback);
if (count > 0 && _callbacks.Count == 0)
{
ResetTimer();
}
}
}
