/// <summary>
/// Initializes a new instance of the <see cref="ThreadPool" /> class.
/// </summary>
public ThreadPool(int numberOfThreads, string threadsNamePrefix)
{
NumberOfThreads = numberOfThreads;
threads = new Queue <SingleThreadRunner>();
threadsIdle = new ConcurrentQueue <SingleThreadRunner>();
// allocate threads...
for (var i = 0; i < NumberOfThreads; i++)
{
var singleThreadRunner = new SingleThreadRunner(this);
singleThreadRunner.Thread = new Thread(singleThreadRunner.DoWork);
singleThreadRunner.Thread.Name = threadsNamePrefix + (i + 1);
singleThreadRunner.Thread.IsBackground = true;
threads.Enqueue(singleThreadRunner);
threadsIdle.Enqueue(singleThreadRunner);
singleThreadRunner.Thread.Start();
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ThreadPool" /> class.
/// </summary>
public ThreadPool(int numberOfThreads, string threadsNamePrefix)
{
NumberOfThreads = numberOfThreads;
threads = new Queue<SingleThreadRunner>();
threadsIdle = new ConcurrentQueue<SingleThreadRunner>();
// allocate threads...
for (var i = 0; i < NumberOfThreads; i++)
{
var singleThreadRunner = new SingleThreadRunner(this);
singleThreadRunner.Thread = new Thread(singleThreadRunner.DoWork);
singleThreadRunner.Thread.Name = threadsNamePrefix + (i + 1);
singleThreadRunner.Thread.IsBackground = true;
threads.Enqueue(singleThreadRunner);
threadsIdle.Enqueue(singleThreadRunner);
singleThreadRunner.Thread.Start();
}
}
/// <summary>
/// Dequeues the work item.
/// </summary>
/// <param name="singleThreadRunner">The single thread runner.</param>
/// <param name="isGetNewOne">
/// if set to <c>true</c> [is get new one].
/// </param>
/// <param name="returnedWorkItem">The returned work item.</param>
/// <returns>
/// <see langword="true" />, if a work item has been
/// successfully dequeued. <see langword="false" /> otherwise.
/// </returns>
internal WorkItem DequeueWorkItemInternal(SingleThreadRunner singleThreadRunner, bool isGetNewOne,
WorkItem returnedWorkItem = null)
{
if (returnedWorkItem != null)
{
returnedWorkItems.Enqueue(returnedWorkItem);
}
if (!shutDownSignaled && isGetNewOne)
{
WorkItem workItem;
if (workItemQueue.TryDequeue(out workItem))
{
workItem.SingleThreadRunner = singleThreadRunner;
return(workItem);
}
}
// If we are here, there is no more work to do left...
// The worker has to be set to idle...
Interlocked.Decrement(ref threadsWorking);
threadsIdle.Enqueue(singleThreadRunner);
return(null);
}
/// <summary>
/// Dequeues the work item.
/// </summary>
/// <param name="singleThreadRunner">The single thread runner.</param>
/// <param name="isGetNewOne">
/// if set to <c>true</c> [is get new one].
/// </param>
/// <param name="returnedWorkItem">The returned work item.</param>
/// <returns>
/// <see langword="true" />, if a work item has been
/// successfully dequeued. <see langword="false" /> otherwise.
/// </returns>
internal WorkItem DequeueWorkItemInternal(SingleThreadRunner singleThreadRunner, bool isGetNewOne,
WorkItem returnedWorkItem = null)
{
if (returnedWorkItem != null)
{
returnedWorkItems.Enqueue(returnedWorkItem);
}
if (!shutDownSignaled && isGetNewOne)
{
WorkItem workItem;
if (workItemQueue.TryDequeue(out workItem))
{
workItem.SingleThreadRunner = singleThreadRunner;
return workItem;
}
}
// If we are here, there is no more work to do left...
// The worker has to be set to idle...
Interlocked.Decrement(ref threadsWorking);
threadsIdle.Enqueue(singleThreadRunner);
return null;
}
