public DefaultObjectPool(IPooledObjectPolicy <T> policy, int maximumRetained)
{
_policy = policy ?? throw new ArgumentNullException(nameof(policy));
_fastPolicy = policy as PooledObjectPolicy <T>;
_isDefaultPolicy = IsDefaultPolicy();
// -1 due to _firstItem
_items = new ObjectWrapper[maximumRetained - 1];
bool IsDefaultPolicy()
{
var type = policy.GetType();
return(type.IsGenericType && type.GetGenericTypeDefinition() == typeof(DefaultPooledObjectPolicy <>));
}
}
/// <summary>
/// Creates an instance of <see cref="Microsoft.Extensions.ObjectPool.DefaultObjectPool{T}"/>.
/// </summary>
/// <param name="policy">The pooling policy to use.</param>
/// <param name="poolSize">The maximum number of objects to retain in the pool.</param>
public DefaultObjectPool(IPooledObjectPolicy <T> policy, int poolSize)
{
_policy = policy ?? throw new ArgumentNullException(nameof(policy));
PoolSize = poolSize;
_fastPolicy = policy as PooledObjectPolicy <T>;
_isDefaultPolicy = IsDefaultPolicy();
_items = Enumerable.Range(0, poolSize).Select(i => new ObjectWrapper <T>()
{
Element = _fastPolicy.OptimisticObjectCreation ? Create() : null, Index = i /*, CheckOut = DateTime.MinValue*/
}).ToArray();
bool IsDefaultPolicy()
{
var type = policy.GetType();
return(type.IsGenericType && type.GetGenericTypeDefinition() == typeof(DefaultPooledObjectPolicy <>));
}
}