/// <summary>
/// Fast expiration. Since the ExpiringObject is ordered, the for-loop can break
/// eaely if an object is not expired.
/// </summary>
/// <param name="segment">The segment.</param>
private void ExpireSegment(CacheMap <TKey, ExpiringObject> segment)
{
//.NET-specific: iterate over KeyValuePairs
foreach (var kvp in segment.ToList()) // iterate over copy
{
var expObj = kvp.Value;
if (expObj.IsExpired)
{
segment.Remove(kvp.Key); // remove from original
Logger.Debug("Removed in expire segment: {0}.", expObj.Value);
_removedCounter.IncrementAndGet();
}
else
{
break;
}
}
}
/// <summary>
/// Expires a key in a segment. If a key value pair is expired, it will get removed.
/// </summary>
/// <param name="segment">The segment.</param>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
/// <returns>True, if expired. False, otherwise.</returns>
private bool Expire(CacheMap <TKey, ExpiringObject> segment, TKey key, ExpiringObject value)
{
if (value.IsExpired)
{
lock (segment)
{
var tmp = segment.Get(key);
if (tmp != null && tmp.Equals(value))
{
segment.Remove(key);
Logger.Debug("Removed in expire: {0}.", value.Value);
_removedCounter.IncrementAndGet();
}
}
return(true);
}
return(false);
}