/// <summary>
/// Queues a new workitem.
/// </summary>
/// <param name="myThreadPoolEntry">The work item, defined by the delegate and params</param>
/// <returns>True, if the item was succesfully queued and False if it could be queued. This might be happen if the queue is full.</returns>
public bool QueueWorkItem(ThreadPoolEntry myThreadPoolEntry)
{
if (!_AddingAllowed)
{
throw new InvalidOperationException("Cannot queue item for this pool.");
}
if (_Disposed)
{
throw new InvalidOperationException("Cannot queue item for a disposed pool.");
}
//System.Diagnostics.Debug.WriteLine("[GraphThreadPool] BusyWorkers: " + _BusyWorkers + " in Queue: "
// + _ThreadEntries.Count + " FreeWorkers: " + _FreeWorkers + " CurThreads: " + _ParallelThreadWorkers.Count + " T:" + DateTime.Now.Ticks);
if (_WorkerThreads < _MaxNumberOfParallelThreads && _FreeWorkers == 0 && _WorkerThreads < _Workitems)
{
AddWorkerThread();
//System.Diagnostics.Debug.WriteLine("[GraphThreadPool] Spawn New Thread: BusyWorkers: " + _BusyWorkers + " in Queue: " + _ThreadEntries.Count + " FreeWorkers: " + _FreeWorkers);
}
// all workers are free and nothing to do, shutdown one worker
else if (_FreeWorkers == _WorkerThreads && _WorkerThreads > _MinNumberOfParallelThreads)
{
lock (_SuspendNextFreeWorkerLock)
{
_SuspendNextFreeWorker = true;
}
}
lock (_WorkitemsQueue)
{
try
{
_WorkitemsQueue.Enqueue(myThreadPoolEntry);
Interlocked.Increment(ref _Workitems);
}
catch
{
// The queue might be full
return(false);
}
// there is at least 1 worker waiting for items
if (_FreeWorkers > 0)
{
Monitor.Pulse(_WorkitemsQueue);
}
}
return(true);
}
/// <summary>
/// Queues a new workitem.
/// </summary>
/// <param name="myThreadPoolEntry">The work item, defined by the delegate and params</param>
/// <returns>True, if the item was succesfully queued and False if it could be queued. This might be happen if the queue is full.</returns>
public bool QueueWorkItem(ThreadPoolEntry myThreadPoolEntry)
{
if (!_AddingAllowed) throw new InvalidOperationException("Cannot queue item for this pool.");
if (_Disposed) throw new InvalidOperationException("Cannot queue item for a disposed pool.");
//System.Diagnostics.Debug.WriteLine("[GraphThreadPool] BusyWorkers: " + _BusyWorkers + " in Queue: "
// + _ThreadEntries.Count + " FreeWorkers: " + _FreeWorkers + " CurThreads: " + _ParallelThreadWorkers.Count + " T:" + DateTime.Now.Ticks);
if (_WorkerThreads < _MaxNumberOfParallelThreads && _FreeWorkers == 0 && _WorkerThreads < _Workitems)
{
AddWorkerThread();
//System.Diagnostics.Debug.WriteLine("[GraphThreadPool] Spawn New Thread: BusyWorkers: " + _BusyWorkers + " in Queue: " + _ThreadEntries.Count + " FreeWorkers: " + _FreeWorkers);
}
// all workers are free and nothing to do, shutdown one worker
else if (_FreeWorkers == _WorkerThreads && _WorkerThreads > _MinNumberOfParallelThreads)
{
lock (_SuspendNextFreeWorkerLock)
{
_SuspendNextFreeWorker = true;
}
}
lock (_WorkitemsQueue)
{
try
{
_WorkitemsQueue.Enqueue(myThreadPoolEntry);
Interlocked.Increment(ref _Workitems);
}
catch
{
// The queue might be full
return false;
}
// there is at least 1 worker waiting for items
if (_FreeWorkers > 0)
Monitor.Pulse(_WorkitemsQueue);
}
return true;
}
