/// <summary>
/// Called when a thread is done working.
/// </summary>
/// <param name="thread">The thread that is done working.</param>
internal void _doneWorking(WorkerThread thread)
{
lock (_lock) {
_waitingThreads.Enqueue(thread);
}
}
/// <summary>
/// Called when a thread is done working.
/// </summary>
/// <param name="thread">The thread that is done working.</param>
internal void DoneWorking(WorkerThread thread)
{
lock (lock_)
{
waitingThreads_.Enqueue(thread);
}
}
/// <summary>
/// Called when a thread shuts down.
/// </summary>
/// <param name="thread">The thread that is shutting down.</param>
internal void ShutdownThread(WorkerThread thread)
{
lock (lock_)
{
threads_.Remove(thread.ID);
// Search the waiting threads, remove the given thread can stop early because order
// does not matter.
int max = waitingThreads_.Count;
for (int i = 0; i < max; i++)
{
var temp = waitingThreads_.Dequeue();
if (temp == thread)
break;
waitingThreads_.Enqueue(temp);
}
}
}
/// <summary>
/// Resizes the thread pool to fit a new thread object and removes extra threads.
/// </summary>
void ResizePool()
{
lock (lock_)
{
// Check that we have at least one waiting thread.
if (waitingThreads_.Count == 0)
{
var temp = new WorkerThread(this, E_);
waitingThreads_.Enqueue(temp);
threads_.Add(temp.ID, temp);
}
// Remove extra threads.
while (waitingThreads_.Count > (threads_.Count * WAITING_THREAD_TARGET + MIN_THREAD_COUNT))
{
var temp = waitingThreads_.Dequeue();
threads_.Remove(temp.ID);
temp.Dispose();
}
}
}