/// <summary>
/// Initializes a new instance of the <see cref="OnTheFlyObjectPool<T>"/> class.
/// </summary>
/// <param name="factory">
/// The factory delegate to create <typeparamref name="T"/> type instance using <see cref="ObjectPoolConfiguration"/>.
/// </param>
/// <param name="configuration">
/// The <see cref="ObjectPoolConfiguration"/> which contains various settings of this object pool.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="factory"/> is <c>null</c>.
/// Or <paramref name="configuration"/> is <c>null</c>.
/// </exception>
public OnTheFlyObjectPool(Func <ObjectPoolConfiguration, T> factory, ObjectPoolConfiguration configuration)
{
Contract.EndContractBlock();
_factory = factory ?? throw new ArgumentNullException(nameof(factory));
_configuration = configuration ?? throw new ArgumentNullException(nameof(configuration));
}
/// <summary>
/// Initializes a new instance of the <see cref="StandardObjectPool<T>"/> class.
/// </summary>
/// <param name="factory">
/// The factory delegate to create <typeparamref name="T"/> type instance.
/// </param>
/// <param name="configuration">
/// The <see cref="ObjectPoolConfiguration"/> which contains various settings of this object pool.
/// </param>
/// <exception cref="ArgumentNullException">
/// <paramref name="factory"/> is <c>null</c>.
/// </exception>
public StandardObjectPool(Func <T> factory, ObjectPoolConfiguration configuration)
{
Contract.EndContractBlock();
var safeConfiguration = (configuration ?? ObjectPoolConfiguration.Default).AsFrozen();
if (string.IsNullOrWhiteSpace(safeConfiguration.Name))
{
TraceSource = new TraceSource(GetType().FullName);
name = GetType().FullName + "@" + GetHashCode().ToString("X", CultureInfo.InvariantCulture);
}
else
{
TraceSource = new TraceSource(safeConfiguration.Name);
name = safeConfiguration.Name;
}
if (configuration == null && TraceSource.ShouldTrace(StandardObjectPoolTrace.InitializedWithDefaultConfiguration))
{
TraceSource.TraceEvent(
StandardObjectPoolTrace.InitializedWithDefaultConfiguration,
"Initialized with default configuration. { \"Name\" : \"{0}\", \"Type\" : \"{1}\", \"HashCode\" : 0x{2:X} }",
name,
GetType(),
GetHashCode()
);
}
else if (TraceSource.ShouldTrace(StandardObjectPoolTrace.InitializedWithConfiguration))
{
TraceSource.TraceEvent(
StandardObjectPoolTrace.InitializedWithConfiguration,
"Initialized with specified configuration. { \"Name\" : \"{0}\", \"Type\" : \"{1}\", \"HashCode\" : 0x{2:X}, \"Configuration\" : {3} }",
name,
GetType(),
GetHashCode(),
configuration
);
}
this.configuration = safeConfiguration;
this.factory = factory ?? throw new ArgumentNullException(nameof(factory));
leasesLock = new ReaderWriterLockSlim(LockRecursionPolicy.NoRecursion);
borrowTimeout = safeConfiguration.BorrowTimeout ?? TimeSpan.FromMilliseconds(Timeout.Infinite);
pool =
new BlockingCollection <T>(
new ConcurrentStack <T>()
);
if (safeConfiguration.MaximumPooled == null)
{
leases = new BlockingCollection <WeakReference>(new ConcurrentQueue <WeakReference>());
}
else
{
leases = new BlockingCollection <WeakReference>(new ConcurrentQueue <WeakReference>(), safeConfiguration.MaximumPooled.Value);
}
for (var i = 0; i < safeConfiguration.MinimumReserved; i++)
{
if (!AddToPool(factory(), 0))
{
TraceSource.TraceEvent(
StandardObjectPoolTrace.FailedToAddPoolInitially,
"Failed to add item. {{ \"Name\" : \"{0}\", \"Type\" : \"{1}\", \"HashCode\" : 0x{2:X} }}",
name,
GetType(),
GetHashCode()
);
}
}
evictionIntervalMilliseconds = safeConfiguration.EvitionInterval == null ? default(int?) : unchecked ((int)safeConfiguration.EvitionInterval.Value.TotalMilliseconds);
if (safeConfiguration.MaximumPooled != null &&
safeConfiguration.MinimumReserved != safeConfiguration.MaximumPooled.GetValueOrDefault() &&
evictionIntervalMilliseconds != null)
{
evictionTimer = new Timer(OnEvictionTimerElapsed, null, evictionIntervalMilliseconds.Value, Timeout.Infinite);
}
else
{
evictionTimer = null;
}
}