private static double WritePiBenchMark(int piDigit, int piIteration)
{
var iteration = 100;
var miliSecs = new long[iteration];
var sw1 = Stopwatch.StartNew();
for (var i = 0; i < iteration; i++)
{
sw1.Start();
var calculator = new PiCalculator();
var pi = calculator.GetPi(piDigit, piIteration);
sw1.Stop();
miliSecs[i] = sw1.ElapsedMilliseconds;
sw1.Reset();
}
var average = miliSecs.Average();
Console.WriteLine("Pi digit\t\tPi Iteration\t\tAvgCalc Milliseconds");
Console.WriteLine($"{piDigit}\t\t\t{piIteration}\t\t\t{average}");
return(average);
}
public static void ChapterMain()
{
Task <string> task = Task.Factory.StartNew <string>(
() => PiCalculator.Calculate(10));
Task faultedTask = task.ContinueWith(
(antecedentTask) =>
{
Trace.Assert(task.IsFaulted);
Console.WriteLine("Task State: Faulted");
},
TaskContinuationOptions.OnlyOnFaulted);
Task canceledTask = task.ContinueWith(
(antecedentTask) =>
{
Trace.Assert(task.IsCanceled);
Console.WriteLine("Task State: Canceled");
},
TaskContinuationOptions.OnlyOnCanceled);
Task completedTask = task.ContinueWith(
(antecedentTask) =>
{
Trace.Assert(task.IsCompleted);
Console.WriteLine("Task State: Completed");
},
TaskContinuationOptions.OnlyOnRanToCompletion);
completedTask.Wait();
}
public static void Main()
{
// Use Task.Factory.StartNew<string>() for
// TPL prior to .NET 4.5
Task <string> task =
Task.Run <string>(
() => PiCalculator.Calculate(100));
foreach (
char busySymbol in Utility.BusySymbols())
{
if (task.IsCompleted)
{
Console.Write('\b');
break;
}
Console.Write(busySymbol);
}
Console.WriteLine();
Console.WriteLine(task.Result);
System.Diagnostics.Trace.Assert(
task.IsCompleted);
}
private void btnStart_Click(object sender, EventArgs e)
{
this.barAll.Value = 0;
this.barAll.Maximum = (int)numTimes.Value;
for (int i = 0; i < numThread.Value; i++)
{
PiCalculator calculator = null;
if (i == numThread.Value - 1)
{
calculator = new PiCalculator((uint)(numTimes.Value / numThread.Value + (numTimes.Value % numThread.Value)), once, all);
}
else
{
calculator = new PiCalculator((uint)(numTimes.Value / numThread.Value), once, all);
}
threads.Add(new Thread(new ThreadStart(calculator.run)));
}
start = UInt64.Parse(DateTime.Now.ToFileTimeUtc().ToString());
foreach (var t in threads)
{
t.Start();
}
}
static void Main(string [] args)
{
try
{
var param = Validator.GetArgsIntArrFromSrtArr(args);
var piCalculator = new PiCalculator
{
AmountStep = param [0],
AmountThread = 4
};
piCalculator.SetSpinCount(Convert.ToInt32(param [1]));
var timer = System.Diagnostics.Stopwatch.StartNew();
Console.WriteLine(piCalculator.CalculatePi());
timer.Stop();
Console.WriteLine(timer.ElapsedMilliseconds);
timer = System.Diagnostics.Stopwatch.StartNew();
Console.WriteLine(piCalculator.CalculatePi(Convert.ToInt32(param [2])));
timer.Stop();
Console.WriteLine(timer.ElapsedMilliseconds);
}
catch (Exception e)
{
Console.WriteLine(e.Message);
}
}
public static void ChapterMain()
{
// Use Task.Factory.StartNew<string>() for
// TPL prior to .NET 4.5
Task <string> task =
Task.Run <string>(
() => PiCalculator.Calculate(100));
foreach (
char busySymbol in Utility.BusySymbols())
{
if (task.IsCompleted)
{
Console.Write('\b');
break;
}
Console.Write(busySymbol);
}
Console.WriteLine();
Console.WriteLine(task.Result);
if (!task.IsCompleted)
{
throw new Exception("Task Should Be Completed");
}
}
static void Main(string[] args)
{
if (args.Length != 4)
{
PrintHelp();
return;
}
try
{
for (int i = 0; i < args.Length; i++)
{
if (args[i].Contains("t"))
{
threadCount = uint.Parse(args[i + 1]);
}
else if (args[i].Contains("c"))
{
cycleCount = uint.Parse(args[i + 1]);
}
}
}
catch (Exception ex)
{
Console.WriteLine("Invalid arguments");
PrintHelp();
return;
}
if (threadCount < 1 || cycleCount < 100)
{
PrintHelp();
return;
}
for (int i = 0; i < threadCount; i++)
{
PiCalculator calculator = null;
if (i == threadCount - 1)
{
calculator = new PiCalculator((uint)(cycleCount / threadCount + (cycleCount % threadCount)), Once, AllFinished);
}
else
{
calculator = new PiCalculator((uint)(cycleCount / threadCount), Once, AllFinished);
}
threads.Add(new Thread(new ThreadStart(calculator.run)));
}
Console.WriteLine($"start {cycleCount} calculation(s) on {threadCount} thread(s)");
start = UInt64.Parse(DateTime.Now.ToFileTimeUtc().ToString());
foreach (var t in threads)
{
t.Start();
}
reset.WaitOne();
}
private void CalculatePi(IAsyncAction operation)
{
if (isStopped)
{
return;
}
string result = PiCalculator.Calculate(PI_DIGITS);
Debug.WriteLine(result);
}
public static void ChapterMain()
{
string pi = null;
const int iterations = TotalDigits / BatchSize;
for (int i = 0; i < iterations; i++)
{
pi += PiCalculator.Calculate(
BatchSize, i * BatchSize);
}
Console.WriteLine(pi);
}
public static void ChapterMain()
{
string pi = null;
int iterations = TotalDigits / BatchSize;
string[] sections = new string[iterations];
Parallel.For(0, iterations, (i) =>
{
sections[i] += PiCalculator.Calculate(
BatchSize, i * BatchSize);
});
pi = string.Join("", sections);
Console.WriteLine(pi);
}
public static void Main()
{
string pi = null;
const int iterations = TotalDigits / BatchSize;
string[] sections = new string[iterations];
//TPL提供了一个辅助方法，并行迭代
Parallel.For(0, iterations, (i) =>
{
sections[i] = PiCalculator.Calculate(BatchSize, i * BatchSize);
});
pi = string.Join("", sections);
Console.WriteLine(pi);
}
private static void WritePi(
CancellationToken cancellationToken)
{
const int batchSize = 1;
string piSection = string.Empty;
int i = 0;
while (!cancellationToken.IsCancellationRequested ||
i == int.MaxValue)
{
piSection = PiCalculator.Calculate(
batchSize, (i++) * batchSize);
Console.Write(piSection);
}
}
protected override void OnReceive(object message)
{
if (message is CalcOptions options)
{
var calculator = new PiCalculator();
var pi = calculator.GetPi(options.Digits, options.Iterations);
var strPi = pi.ToString();
var actorSelection = Context.ActorSelection(options.ReceiverAddress);
actorSelection.Tell(new PiNumber {
Pi = strPi
});
}
}
public static void ChapterMain()
{
// Use Task.Factory.StartNew<string>() for
// TPL prior to .NET 4.5
Task <string> task =
Task.Run <string>(
() => PiCalculator.Calculate(10));
Task faultedTask = task.ContinueWith(
(antecedentTask) =>
{
if (!antecedentTask.IsFaulted)
{
throw new Exception("Antecedent Task Should Be Faulted");
}
Console.WriteLine(
"Task State: Faulted");
},
TaskContinuationOptions.OnlyOnFaulted);
Task canceledTask = task.ContinueWith(
(antecedentTask) =>
{
if (!antecedentTask.IsCanceled)
{
throw new Exception("Antecedent Task Should Be Canceled");
}
Console.WriteLine(
"Task State: Canceled");
},
TaskContinuationOptions.OnlyOnCanceled);
Task completedTask = task.ContinueWith(
(antecedentTask) =>
{
if (!antecedentTask.IsCompleted)
{
throw new Exception("Antecedent Task Should Be Completed");
}
Console.WriteLine(
"Task State: Completed");
}, TaskContinuationOptions.
OnlyOnRanToCompletion);
completedTask.Wait();
}
public Task ReceiveAsync(IContext context)
{
if (context.Message is CalcOptions options)
{
var calculator = new PiCalculator();
var pi = calculator.GetPi(options.Digits, options.Iterations);
var strPi = pi.ToString();
PID echoActor = new PID(options.ReceiverAddress, "echoActor");
echoActor.Tell(new PiNumber {
Pi = strPi
});
}
return(Actor.Done);
}
public void CalculateAsync <TState>(
int digits,
CancellationToken cancelToken,
TState userState)
{
Task <string> .Factory.StartNew(
() => PiCalculator.Calculate(digits), cancelToken)
.ContinueWith <string>(
continueTask =>
{
CalculateCompleted(typeof(PiCalculator),
new CalculateCompletedEventArgs(
continueTask.Result,
continueTask.Exception,
cancelToken.IsCancellationRequested,
userState));
return(continueTask.Result);
});
}
public void CalculateAsync <TState>(
int digits,
CancellationToken cancelToken
= default(CancellationToken),
TState userState
= default(TState))
{
SynchronizationContext.
SetSynchronizationContext(
AsyncOperationManager.
SynchronizationContext);
// Ensure the continuation runs on the current
// thread, and that therefore the event will
// be raised on the same thread that called
// this method in the first place.
TaskScheduler scheduler =
TaskScheduler.
FromCurrentSynchronizationContext();
Task.Run(
() =>
{
return(PiCalculator.Calculate(digits));
}, cancelToken)
.ContinueWith(
continueTask =>
{
Exception exception =
continueTask.Exception == null ?
continueTask.Exception :
continueTask.Exception.
InnerException;
CalculateCompleted(
typeof(PiCalculator),
new CalculateCompletedEventArgs(
continueTask.Result,
exception,
cancelToken.IsCancellationRequested,
userState));
}, scheduler);
}
public static void Main()
{
Task <string> task = Task.Factory.StartNew <string>(
() => PiCalculator.Calculate(100));
foreach (char busySymbol in Utility.BusySymbols())
{
if (task.IsCompleted)
{
Console.Write('\b');
break;
}
Console.Write(busySymbol);
}
Console.WriteLine();
// Blocks until task completes.
Console.WriteLine(task.Result);
Trace.Assert(task.IsCompleted);
}
static void Main(string[] args)
{
Task <string> task = Task.Run <string>(() => PiCalculator.Calculate(100000));
foreach (var busySymbol in Utility.BusySymbols())
{
if (task.IsCompleted)
{
Console.WriteLine('\b');
break;
}
Console.WriteLine(busySymbol);//太快的话，这会被忽略
}
Console.WriteLine();
Console.WriteLine(task.Result); //会阻塞调用任务室外线程
System.Diagnostics.Trace.Assert(task.IsCompleted); //判断task.IsCompleted真假，false则出现弹框
}
public void TestInitialize()
{
piCalculator = new PiCalculator();
}
public void TestCleanup()
{
piCalculator = null;
}
public void TestInitialize()
{
piCalculator = new PiCalculator();
}
public async Task <IActionResult> Post([FromBody] int digits)
{
var pi = await Task.Run(() => PiCalculator.GetPi(digits));
return(Ok(pi));
}
public void TestCleanup()
{
piCalculator = null;
}