public static List <ParallelAlgorithmPiece> CreatePieces(long priTotalElements, int priTotalParts)
{
// Always starts in element #0
long liPieceSize;
List <ParallelAlgorithmPiece> lloPieces;
int i;
long liTotalCovered = 0;
liPieceSize = (long)(priTotalElements / priTotalParts);
lloPieces = new List <ParallelAlgorithmPiece>(priTotalParts);
for (i = 0; i < priTotalParts; i++)
{
lloPieces[i] = new ParallelAlgorithmPiece();
lloPieces[i].priBegin = liTotalCovered;
lloPieces[i].priEnd = liTotalCovered + (liPieceSize - 1);
lloPieces[i].priThreadNumber = i;
if (lloPieces[i].priEnd > (priTotalElements - 1))
{
lloPieces[i].priEnd = priTotalElements;
}
liTotalCovered += liPieceSize;
if (liTotalCovered >= priTotalElements)
{
break;
}
}
return(lloPieces);
}
public void CreateThreads(long priTotalElements, int priTotalParts)
{
// priTotalParts should be Environment.ProcessorCount in most cases
// Code added in the WaitHandle.WaitAll version
// Create the AutoResetEvent array with the number of cores available
praoAutoResetEventArray = new AutoResetEvent[priTotalParts];
// End of the code added in the WaitHandle.WaitAll version
prloPieces = ParallelAlgorithmPiece.CreatePieces(priTotalElements, priTotalParts);
foreach (ParallelAlgorithmPiece loPiece in prloPieces)
{
// Create the new thread with parameters
loPiece.poThread = new Thread(new ParameterizedThreadStart(loPiece.ThreadMethod));
// Give the thread a name
loPiece.poThread.Name = loPiece.piThreadNumber.ToString();
// Code added in the WaitHandle.WaitAll version
// Create a new AutoResetEvent instance for that thread with its initial state set to false
loPiece.poAutoResetEvent = new AutoResetEvent(false);
praoAutoResetEventArray[loPiece.piThreadNumber] = loPiece.poAutoResetEvent;
// End of the code added in the WaitHandle.WaitAll version
}
}
