public void WithThreadPool()
{
List<DataItem> values = new List<DataItem>();
var perThreadCount = _list.Count / _currentProcessorCount;
var states = new List<FilteringWorkerState>();
var doneEvents = new ManualResetEvent[_currentProcessorCount - 1];
for (int i = 0; i < _currentProcessorCount - 1; i++)
{
var state = new FilteringWorkerState
{
First = i * perThreadCount,
Count = perThreadCount,
Source = _list,
Data = new List<DataItem>(),
DoneEvent = new ManualResetEvent(false)
};
states.Add(state);
doneEvents[i] = state.DoneEvent;
ThreadPool.QueueUserWorkItem(new WaitCallback(Worker), state);
}
var stateBase = new FilteringWorkerState
{
First = perThreadCount * (_currentProcessorCount - 1),
Count = _list.Count - perThreadCount * (_currentProcessorCount - 1) + 1,
Source = _list,
Data = new List<DataItem>()
};
Worker(stateBase);
var result = stateBase.Data;
if (doneEvents.Length > 0)
{
WaitHandle.WaitAll(doneEvents);
foreach (var state in states)
{
result.AddRange(state.Data);
}
}
}
public void WithThreadPool()
{
List<DataItem> values = new List<DataItem>();
var state0 = new FilteringWorkerState
{
First = 0,
Count = (Int32)(_list.Count / 2),
Source = _list,
Data = new List<DataItem>()
};
ThreadPool.QueueUserWorkItem(new WaitCallback(Worker), state0);
var state1 = new FilteringWorkerState
{
First = (Int32)(_list.Count / 2),
Count = (Int32)(_list.Count / 2),
Source = _list,
Data = new List<DataItem>()
};
Worker(state1);
lock (state0)
{
for (int j = 0; j < state1.Data.Count; j++)
{
state0.Data.Add(state1.Data[j]);
}
}
}
