/// <summary>
/// Constructs an asynchronous producer with the given buffer size.
/// </summary>
/// <param name="sources">the source objects</param>
/// <param name="func">the function mapping source objects to results</param>
/// <param name="capacity">the size of the buffer</param>
public AsyncProducer(IEnumerable <S> sources, ProducerFunction <S, T> func, int capacity)
{
_data = new T[capacity];
_head = _tail = 0; // insert at tail, remove from head
_full = new Semaphore(0, capacity); // 0 out of capacity full slots
_empty = new Semaphore(capacity, capacity); // capacity out of capacity empty slots
_sources = sources;
_func = func;
// start async thread
ThreadPool.QueueUserWorkItem(new WaitCallback(run));
}
/// <summary>
/// Constructs an asynchronous producer with the default buffer size.
/// </summary>
/// <param name="sources">the source objects</param>
/// <param name="func">the function mapping source objects to results</param>
public AsyncProducer(IEnumerable <S> sources, ProducerFunction <S, T> func)
: this(sources, func, DEFAULT_BUFFER_SIZE)
{
// calls the main constructor
}
