public void ThreadsCountTest()
{
const int n = 5;
var threadPool = new MyThreadPool.MyThreadPool(n);
Assert.AreEqual(n, threadPool.AliveThreadsCount());
}
public void ExceptionTest()
{
var threadPool = new MyThreadPool.MyThreadPool(1);
int ZeroDivide()
{
int x = 0;
return(5 / x);
}
var wrongTask = threadPool.AddTask(ZeroDivide);
Action wrongAction =
() =>
{
int result = wrongTask.Result;
};
Assert.ThrowsException <AggregateException>(() => wrongTask.Result);
try
{
int result = wrongTask.Result;
}
catch (AggregateException ae)
{
foreach (Exception ex in ae.InnerExceptions)
{
Assert.ThrowsException <DivideByZeroException>(() => throw ex);
}
}
}
public void ShutdownTest()
{
const int n = 5;
var threadPool = new MyThreadPool.MyThreadPool(n);
int Pow()
{
int a = 1963889993;
int p = 1980589433;
int res = 1;
for (int i = 0; i < p; i++)
{
res *= a;
}
return(res);
}
var heavyTask = threadPool.AddTask(Pow);
Assert.AreEqual(n, threadPool.AliveThreadsCount());
threadPool.Shutdown();
Thread.Sleep(10);
Assert.AreEqual(1, threadPool.AliveThreadsCount());
Assert.AreEqual(Pow(), heavyTask.Result);
Thread.Sleep(500);
Assert.AreEqual(0, threadPool.AliveThreadsCount());
}
static void Main(string[] args)
{
const int FibonacciCalculations = 3;
// One event is used for each Fibonacci object.
ManualResetEvent[] doneEvents = new ManualResetEvent[FibonacciCalculations];
Fibonacci[] fibArray = new Fibonacci[FibonacciCalculations];
Random random = new Random();
// Configure and start threads using ThreadPool.
for (int i = 0; i < FibonacciCalculations; i++)
{
doneEvents[i] = new ManualResetEvent(false);
Fibonacci f = new Fibonacci(random.Next(5, 10), doneEvents[i]);
fibArray[i] = f;
MyThreadPool.QueueUserWorkItem(f.ThreadPoolCallback);
}
// Wait for all threads in pool to calculate.
WaitHandle.WaitAll(doneEvents);
Console.WriteLine("All calculations are complete.");
// Display the results.
for (int i = 0; i < FibonacciCalculations; i++)
{
Fibonacci f = fibArray[i];
Console.WriteLine("Fibonacci({0}) = {1}", f.N, f.FibOfN);
}
Console.Read();
}
public void CalculationsWithException()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var i = 8;
var task = myThreadPool.AddTask(() => 1 / (i - 8));
var result = task.Result;
}
/// <summary>
/// Конструктор класса задач без аргументов, инициализует значения для дальнейшей работы
/// с задачей.
/// </summary>
/// <param name="func">Функция, на основе которой создается задача для пула потоков.</param>
/// <param name="poolQueue">
/// Ссылка на очередь задач из пула для добавления новых.
/// Требуется для работы функции ContinueWith.
/// </param>
public MyTask(Func <TResult> func, MyThreadPool pool)
{
this.task = func;
this.isCompleted = false;
this.pool = pool;
this.continueQueue = new Queue <Action>();
this.error = false;
this.ready = new ManualResetEvent(false);
}
public void ExceptionMustNotStopProgram()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var i = 8;
var task = myThreadPool.AddTask(() => 1 / (i - 8));
myThreadPool.Shutdown();
}
public void CalculationsWithExceptionInConrinueWith()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var task = myThreadPool.AddTask(() => 42);
var newTask = task.ContinueWith <int>(i => throw new Exception());
var result = task.Result;
var newResult = newTask.Result;
}
public void ExceptionInContinueWithMustNotStopProgram()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var task = myThreadPool.AddTask(() => 42);
var newTask = task.ContinueWith <int>(i => throw new Exception());
var result = task.Result;
myThreadPool.Shutdown();
}
public void CheckContinueWithOnce()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var task = myThreadPool.AddTask(() => 2);
var newTask = task.ContinueWith(j => Convert.ToString(j));
Assert.AreEqual(2, task.Result);
Assert.AreEqual("2", newTask.Result);
myThreadPool.Shutdown();
}
public void SimpleTest()
{
var threadPool = new MyThreadPool.MyThreadPool(1);
string SayHello() => "Hello";
var helloTask = threadPool.AddTask <string>(SayHello);
if (!helloTask.IsCompleted)
{
Thread.Sleep(500);
}
Assert.AreEqual("Hello", helloTask.Result);
}
public void TryAddTaskToShutThreadPool()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
myThreadPool.Shutdown();
var taskAmount = 2000;
var tasks = new IMyTask <int> [taskAmount];
for (var i = 0; i < taskAmount; i++)
{
tasks[i] = myThreadPool.AddTask(() => 7 * 8);
Assert.AreEqual(56, tasks[i].Result);
}
}
public void CheckItCanSolveTasks()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var taskAmount = 20;
var tasks = new IMyTask <int> [taskAmount];
for (var i = 0; i < taskAmount; i++)
{
tasks[i] = myThreadPool.AddTask(new Func <int>(() => 2 * 21));
Assert.AreEqual(42, tasks[i].Result);
}
myThreadPool.Shutdown();
}
public void TryContinueWithAfterShutdownWhenTaskIsCounted()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var task = myThreadPool.AddTask(() =>
{
var answer = DateTime.Now;
Thread.Sleep(1000);
return(answer);
});
myThreadPool.Shutdown();
var result = task.Result;
var newTask = task.ContinueWith(i => DateTime.Now.AddMilliseconds(10000));
var newResult = newTask.Result;
}
public void LongCalculations()
{
var threadAmount = 10;
var myThreadPool = new MyThreadPool(threadAmount);
var task = myThreadPool.AddTask(() =>
{
var answer = DateTime.Now;
Thread.Sleep(1000);
return(answer);
});
var newTask = task.ContinueWith(i => DateTime.Now.AddMilliseconds(1000));
var result = task.Result;
result = newTask.Result;
myThreadPool.Shutdown();
}
public void SimpleContinueWithTest()
{
var threadPool = new MyThreadPool.MyThreadPool(1);
string SayHello() => "Hello";
var helloTask = threadPool.AddTask(SayHello);
string SayWorld(string str) => str + " World!";
var helloworldTask = helloTask.ContinueWith(SayWorld);
if (!helloTask.IsCompleted)
{
Thread.Sleep(500);
}
Assert.AreEqual("Hello", helloTask.Result);
Assert.AreEqual("Hello World!", helloworldTask.Result);
}
static void Main(string[] args)
{
var task = new Task(() =>
{
DataGenerator dg = new DataGenerator();
long threadWaitTime = 2000;
double growthQuotient = 0.25;
int threadNumber = 5;
MyThreadPool pool = new MyThreadPool(dg.standartExecutionTime, threadNumber, threadWaitTime);
dg.DataGeneratedEvent += (sender, dataGeneratedEventArgs) =>
{
Console.WriteLine(($"{DateTime.Now:hh:mm:ss.fff tt} Сгенерировано задание"));
pool.RaiseEvent(Slow, dg.standartExecutionTime);
};
dg.Start();
});
task.Start();
Console.ReadLine();
}
public void BigPoolTest()
{
const int n = 3;
var threadPool = new MyThreadPool.MyThreadPool(n);
string SayHello() => "Hello";
string SayHelloWorld(string hello) => hello + " world!";
int TakeFive() => 5;
int Add(int number) => number + 15;
bool GetTrue() => true;
string MakeChoice(bool b) => b ? "Good" : "Bad";
string Introduce(string str) => str + " boy";
var helloTask = threadPool.AddTask(SayHello);
var takefiveTask = threadPool.AddTask(TakeFive);
var gettrueTask = threadPool.AddTask(GetTrue);
var helloworldTask = helloTask.ContinueWith(SayHelloWorld);
var addTask = takefiveTask.ContinueWith(Add);
var choiceTask = gettrueTask.ContinueWith(MakeChoice);
var introduceTask = choiceTask.ContinueWith(Introduce);
Assert.AreEqual("Hello", helloTask.Result);
Assert.AreEqual(5, takefiveTask.Result);
Assert.AreEqual(true, gettrueTask.Result);
Assert.AreEqual(n, threadPool.AliveThreadsCount());
Assert.AreEqual("Hello world!", helloworldTask.Result);
Assert.AreEqual(20, addTask.Result);
Assert.AreEqual("Good", choiceTask.Result);
Assert.AreEqual(n, threadPool.AliveThreadsCount());
Assert.AreEqual("Good boy", introduceTask.Result);
Assert.AreEqual(n, threadPool.AliveThreadsCount());
}
public void TestInitialize()
{
myThreadPool = new MyThreadPool.MyThreadPool(10);
}
public MyTask(Func <TResult> task, MyThreadPool threadPool)
{
function = task;
this.threadPool = threadPool;
localQueue = new Queue <Action>();
}
/// <summary>
/// Конструктор экземпляра класса <see cref="MyTask{TResult}"/>.
/// </summary>
/// <param name="receivedFunc">Вычисление, которое представляет задача.</param>
/// <param name="receivedThreadPool">Объект класса <see cref="MyThreadPool"/>,
/// в котором выполняется задача.</param>
public MyTask(Func <TResult> func, MyThreadPool threadPool)
{
this.func = func;
this.threadPool = threadPool;
}
/// <summary>
/// Задача — вычисление некоторого значения, описывается в виде Func<TResult>
/// </summary>
/// <param name="myThreadPool"> Пул потоков, в котором проходит вычисление</param>
/// <param name="func"> Сама задача</param>
public MyTask(MyThreadPool myThreadPool, Func <T> func)
{
this.func = func;
threadPool = myThreadPool;
IsCompleted = false;
}
