private void PNumTestProgressEvent(object sender, PNumTestReportModel e)
{
if (e.PNumberRangeResult > 0)
{
PNumberRangeText = $"There are {e.PNumberRangeResult} prime numbers between 2 and {pNumRangeTest}";
}
if (e.NthPNumberResult > 0)
{
PNumberNthText = $"{e.NthPNumberResult} is {pNumNthTest}th prime number";
}
PNumTestArcAngle = e.ProgressArcAngle;
}
//Execute Prime Numbers test in parallel mode
public static void StartParallel(IProgress <PNumTestReportModel> progress, int range, int nthPos)
{
//Create an instance of the report model object which will be later sent in progress report
PNumTestReportModel report = new PNumTestReportModel();
Task RangeTask = Task.Run(() => PrimeNumbersRange(range)).ContinueWith(ant => report.PNumberRangeResult = ant.Result);
Task NthTask = Task.Run(() => NthPrimeNumber(nthPos)).ContinueWith(ant => report.NthPNumberResult = ant.Result);
Task.WaitAll(RangeTask, NthTask);
//Report the changes to the UI
report.ProgressArcAngle = 360;
progress.Report(report);
}
//Execute Prime Numbers test in synchronous mode
public static void StartSync(IProgress <PNumTestReportModel> progress, int range, int nthPos)
{
//Create an instance of the report model object which will be later sent in progress report
PNumTestReportModel report = new PNumTestReportModel();
long RangeResult = PrimeNumbersRange(range);
long NthPosResult = NthPrimeNumber(nthPos);
//Report the changes to the UI
report.NthPNumberResult = NthPosResult;
report.PNumberRangeResult = RangeResult;
report.ProgressArcAngle = 360;
progress.Report(report);
}
//Execute Prime Numbers test in parallel async mode
public static async Task StartParallelAsync(IProgress <PNumTestReportModel> progress, int range, int nthPos, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
//Create an instance of the report model object which will be later sent in progress report
PNumTestReportModel report = new PNumTestReportModel();
//Start both tasks at the same time
Task rangeTask = Task.Run(() => { return(PrimeNumbersRangeAsync(range, ref progress, ref report, ref cancellationToken)); })
.ContinueWith(ant => { report.PNumberRangeResult = ant.Result; });
Task nthTask = Task.Run(() => { return(NthPrimeNumberAsync(nthPos, ref progress, ref report, ref cancellationToken)); })
.ContinueWith(ant => { report.NthPNumberResult = ant.Result; });
//Asynchronously wait for both task to complete
await Task.WhenAll(rangeTask, nthTask);
cancellationToken.ThrowIfCancellationRequested();
report.ProgressArcAngle = 360;
progress.Report(report);
}
//Execute Prime Numbers test in asynchronous mode
public static async Task StartAsync(IProgress <PNumTestReportModel> progress, int range, int nthPos, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
//Create an instance of the report model object which will be later sent in progress report
PNumTestReportModel report = new PNumTestReportModel();
await Task.Run(() => { return(PrimeNumbersRangeAsync(range, ref progress, ref report, ref cancellationToken)); })
.ContinueWith(ant => { report.PNumberRangeResult = ant.Result; });
cancellationToken.ThrowIfCancellationRequested();
report.ProgressArcAngle = 180;
progress.Report(report);
await Task.Run(() => { return(NthPrimeNumberAsync(nthPos, ref progress, ref report, ref cancellationToken)); })
.ContinueWith(ant => { report.NthPNumberResult = ant.Result; });
cancellationToken.ThrowIfCancellationRequested();
report.ProgressArcAngle = 360;
progress.Report(report);
}
/// <summary>
/// This method does the same as <see cref="NthPrimeNumber(int)"/> but also reports progress
/// </summary>
private static long NthPrimeNumberAsync(int NthPos, ref IProgress <PNumTestReportModel> progress, ref PNumTestReportModel report, ref CancellationToken cancellationToken)
{
int count = 0;
int result = 2;
int curReportIndex = 0;
while (count < NthPos)
{
long a = 2;
bool isPrime = true;
while (a * a <= result)
{
if (result % a == 0)
{
isPrime = false;
break;
}
a++;
}
if (isPrime)
{
count++;
}
result++;
//report progress to the UI
if (count % (NthPos / 5) == 0 && count > 0 && count != curReportIndex)
{
curReportIndex = count;
report.ProgressArcAngle += 30;
progress.Report(report);
}
if (cancellationToken.IsCancellationRequested)
{
break;
}
}
return(--result);
}
/// <summary>
/// This method does the same as <see cref="PrimeNumbersRange(int)"/> but also reports progress
/// </summary>
private static long PrimeNumbersRangeAsync(int range, ref IProgress <PNumTestReportModel> progress, ref PNumTestReportModel report, ref CancellationToken cancellationToken)
{
long result = 0;
for (int i = 2; i < range; i++)
{
bool isPrime = true;
long a = 2;
while (a * a <= i)
{
if (i % a == 0)
{
isPrime = false;
break;
}
a++;
}
if (isPrime)
{
result++;
}
//report progress to the UI
if (i % (range / 3) == 0 && i > 0 || i == range - 1)
{
report.ProgressArcAngle += 45;
progress.Report(report);
}
if (cancellationToken.IsCancellationRequested)
{
break;
}
}
return(result);
}
