public void AddOrUpdate(TKey key, TValue value)
{
_lock.EnterReadLock();
IExpireItem <TValue> val;
try
{
if (_map.TryGetValue(key, out val))
{
val.ResetExpire();
val.Item = value;
}
else
{
val = new ExpireItem <TValue>();
val.ExpireTime = this.ExpireTime;
val.Async = this.Async;
if (OnExpire != null)
{
val.OnExpire += Val_OnExpire;
}
val.Item = value;
// Store it
_map.Add(key, val);
}
}
finally
{
_lock.ExitReadLock();
}
}
public bool Add(TKey key, TValue value)
{
_lock.EnterReadLock();
IExpireItem <TValue> val;
try
{
if (_map.TryGetValue(key, out val))
{
return(false);
}
val = new ExpireItem <TValue>();
val.ExpireTime = this.ExpireTime;
val.Async = this.Async;
if (OnExpire != null)
{
val.OnExpire += Val_OnExpire;
}
val.Item = value;
// Store it
_map.Add(key, val);
return(true);
}
finally
{
_lock.ExitReadLock();
}
}
public TValue Get(TKey key, Func <TValue> factory)
{
// Check cache
_lock.EnterReadLock();
_state = true;
IExpireItem <TValue> val;
try
{
if (_map.TryGetValue(key, out val) && !val.Expire)
{
return(val.Item);
}
}
finally
{
_lock.ExitReadLock();
_state = false;
}
// Cache it
_lock.EnterWriteLock();
_state = true;
try
{
// Check again
if (_map.TryGetValue(key, out val) && !val.Expire)
{
return(val.Item);
}
if (val == null)
{
// Create it
val = new ExpireItem <TValue>();
val.ExpireTime = this.ExpireTime;
val.Async = this.Async;
if (OnExpire != null)
{
val.OnExpire += Val_OnExpire;
}
val.Item = factory();
// Store it
_map.Add(key, val);
}
else
{
// Change it
val.Item = factory();
}
// Done
return(val.Item);
}
finally
{
_lock.ExitWriteLock();
_state = false;
}
}
