public T GetOrAdd(string key, Func <T> loadFunction, Func <CacheItemPolicy> getCacheItemPolicyFunction)
{
LazyLock <T> lazy;
bool success;
synclock.EnterReadLock();
try
{
success = this.TryGetValue(key, out lazy);
}
finally
{
synclock.ExitReadLock();
}
if (!success)
{
synclock.EnterWriteLock();
try
{
if (!this.TryGetValue(key, out lazy))
{
lazy = new LazyLock <T>();
var policy = getCacheItemPolicyFunction();
this.cache.Add(key, lazy, policy);
}
}
finally
{
synclock.ExitWriteLock();
}
}
return(lazy.Get(loadFunction));
}
private bool TryGetValue(string key, out LazyLock <T> value)
{
value = (LazyLock <T>) this.cache.Get(key);
if (value != null)
{
return(true);
}
return(false);
}
public void Add(string key, LazyLock item, ICacheDetails cacheDetails)
{
// NOTE: cacheDetails is normally used to set the timeout - you might
// need to roll your own method for doing that.
Context.Session[key] = item;
}
