/// <summary>
/// Creates a new task and starts executing it.
/// </summary>
/// <returns>
/// The new executing task.
/// </returns>
/// <param name='taskFactory'>
/// Task factory to start with.
/// </param>
/// <param name='coroutine'>
/// The coroutine to start.
/// </param>
/// <param name='cancellationToken'>
/// Cancellation token.
/// </param>
/// <param name='creationOptions'>
/// Creation options.
/// </param>
/// <param name='scheduler'>
/// Scheduler.
/// </param>
public static Task StartNew(this TaskFactory taskFactory, IEnumerator coroutine, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler)
{
var task = new YieldableTask(coroutine, cancellationToken, creationOptions);
task.Start(scheduler);
return(task);
}
/// <summary>
/// Creates a new task and starts executing it.
/// </summary>
/// <returns>
/// The new executing task.
/// </returns>
/// <param name='taskFactory'>
/// Task factory to start with.
/// </param>
/// <param name='instruction'>
/// The instruction to start.
/// </param>
/// <param name='cancellationToken'>
/// Cancellation token.
/// </param>
/// <param name='creationOptions'>
/// Creation options.
/// </param>
/// <param name='scheduler'>
/// Scheduler.
/// </param>
public static Task StartNew(this TaskFactory taskFactory, FiberInstruction instruction, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler)
{
var task = new YieldableTask(instruction, cancellationToken, creationOptions);
task.Start(scheduler);
return(task);
}
/// <summary>
/// Continues the task with a coroutine.
/// </summary>
/// <returns>
/// The continued task.
/// </returns>
/// <param name='task'>
/// Task to continue.
/// </param>
/// <param name='instruction'>
/// The instruction to continue with.
/// </param>
/// <param name='cancellationToken'>
/// Cancellation token.
/// </param>
/// <param name='continuationOptions'>
/// Continuation options.
/// </param>
/// <param name='scheduler'>
/// Scheduler to use when scheduling the task.
/// </param>
public static Task ContinueWith(this Task task, FiberInstruction instruction, CancellationToken cancellationToken, TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
{
if (instruction == null)
{
throw new ArgumentNullException("instruction");
}
if (scheduler == null)
{
throw new ArgumentNullException("scheduler");
}
if (!(scheduler is FiberTaskScheduler))
{
throw new ArgumentException("The scheduler for a YieldableTask must be a FiberTaskScheduler", "scheduler");
}
// This creates a continuation that runs on the default scheduler (e.g. ThreadPool)
// where it's OK to wait on a child task to complete. The child task is scheduled
// on the given scheduler and attached to the parent.
//var outerScheduler = TaskScheduler.Current;
//if(outerScheduler is MonoBehaviourTaskScheduler)
// outerScheduler = TaskScheduler.Default;
var outerScheduler = TaskScheduler.Default;
// The thread pool scheduler cannot be used in web scenarios. The outer scheduler
// must be the fiber scheduler.
//var outerScheduler = scheduler;
return(task.ContinueWith((Task antecedent) => {
var yieldableTask = new YieldableTask(instruction, cancellationToken, TaskCreationOptions.AttachedToParent);
yieldableTask.Start(scheduler);
}, cancellationToken, continuationOptions, outerScheduler));
}
/// <summary>
/// Execute the specified coroutine associated with a yieldable task.
/// </summary>
/// <remarks>
/// Any exceptions that occur while executing the fiber will be
/// associated with the specified task and rethrown by the framework.
/// </remarks>
/// <param name="task">
/// The task associated with the executing fiber.
/// </param>
/// <returns>
/// <see cref="FiberInstruction"/> or other scheduler specific instruction.
/// </returns>
private IEnumerator ExecuteYieldableTask(YieldableTask task)
{
object fiberResult = null;
// TODO: Cleanup
//
// This uses internal setters to fake starting the fiber
// and then uses internal Execute(). It should be possible to
// use public APIs instead to:
// 1. Set a fiber property to associate the task
// 2. Set an exception handler on the FiberScheduler
// 3. Retrieve the task in the handler from the fiber and set
// the exeption
// 4. Return from the handler without rethrowing
//
// This method could be removed then and the internal setters
// removed as well.
task.Fiber.Scheduler = scheduler;
task.Fiber.Status = FiberStatus.Running;
while (true)
{
try
{
// Throw here because the scheduler is disposed and will not
// run anything else. No further access is valid.
CancellationToken.ThrowIfCancellationRequested();
fiberResult = task.Fiber.Execute();
if (fiberResult is StopInstruction)
{
// Check for exceptions
if (task.Fiber.IsFaulted)
{
task.FiberException = task.Fiber.Exception;
}
yield break;
}
}
catch (System.Threading.OperationCanceledException ex)
{
// Fiber execution does not throw so the only exception
// expected is the cancellation above.
task.FiberException = ex;
yield break;
}
yield return(fiberResult);
}
}
public void TestCancellationToken()
{
var start = DateTime.Now;
var cancelSource = new CancellationTokenSource();
var backgroundFiberScheduler = SystemFiberScheduler.StartNew(cancelSource.Token);
// Submit a task to the background scheduler and wait for it to complete
var task = new YieldableTask(new YieldForSeconds(2));
task.RunSynchronously(new FiberTaskScheduler(backgroundFiberScheduler));
// Shutdown the scheduler thread
cancelSource.Cancel();
backgroundFiberScheduler.SchedulerThread.Join(5000);
var end = DateTime.Now;
Assert.GreaterOrEqual(end - start, TimeSpan.FromSeconds(2));
Assert.LessOrEqual(end - start, TimeSpan.FromSeconds(3));
}
/// <summary>
/// Execute the specified coroutine associated with a yieldable task.
/// </summary>
/// <remarks>
/// Any exceptions that occur while executing the fiber will be
/// associated with the specified task and rethrown by the framework.
/// </remarks>
/// <param name="task">
/// The task associated with the executing fiber.
/// </param>
/// <returns>
/// <see cref="FiberInstruction"/> or other scheduler specific instruction.
/// </returns>
private IEnumerator ExecuteYieldableTask(YieldableTask task)
{
object fiberResult = null;
// TODO: Cleanup
//
// This uses internal setters to fake starting the fiber
// and then uses internal Execute(). It should be possible to
// use public APIs instead to:
// 1. Set a fiber property to associate the task
// 2. Set an exception handler on the FiberScheduler
// 3. Retrieve the task in the handler from the fiber and set
// the exeption
// 4. Return from the handler without rethrowing
//
// This method could be removed then and the internal setters
// removed as well.
task.Fiber.Scheduler = scheduler;
task.Fiber.FiberState = FiberState.Running;
while (true)
{
try
{
cancelSource.Token.ThrowIfCancellationRequested();
fiberResult = task.Fiber.Execute();
if (fiberResult is StopInstruction)
{
yield break;
}
}
catch (Exception ex)
{
task.FiberException = ex;
yield break;
}
yield return(fiberResult);
}
}
/// <summary>
/// Execute the specified coroutine associated with a yieldable task.
/// </summary>
/// <remarks>
/// Any exceptions that occur while executing the fiber will be
/// associated with the specified task and rethrown by the framework.
/// </remarks>
/// <param name="task">
/// The task associated with the executing fiber.
/// </param>
/// <returns>
/// <see cref="FiberInstruction"/> or other scheduler specific instruction.
/// </returns>
private IEnumerator ExecuteYieldableTask(YieldableTask task)
{
object fiberResult = null;
// TODO: Cleanup
//
// This uses internal setters to fake starting the fiber
// and then uses internal Execute(). It should be possible to
// use public APIs instead to:
// 1. Set a fiber property to associate the task
// 2. Set an exception handler on the FiberScheduler
// 3. Retrieve the task in the handler from the fiber and set
// the exeption
// 4. Return from the handler without rethrowing
//
// This method could be removed then and the internal setters
// removed as well.
task.Fiber.Scheduler = scheduler;
task.Fiber.FiberState = FiberState.Running;
while(true)
{
try
{
cancelSource.Token.ThrowIfCancellationRequested();
fiberResult = task.Fiber.Execute();
if(fiberResult is StopInstruction)
yield break;
}
catch(Exception ex)
{
task.FiberException = ex;
yield break;
}
yield return fiberResult;
}
}
/// <summary>
/// Execute the specified coroutine associated with a yieldable task.
/// </summary>
/// <remarks>
/// Any exceptions that occur while executing the fiber will be
/// associated with the specified task and rethrown by the framework.
/// </remarks>
/// <param name="task">
/// The task associated with the executing fiber.
/// </param>
/// <returns>
/// <see cref="FiberInstruction"/> or other scheduler specific instruction.
/// </returns>
private IEnumerator ExecuteYieldableTask(YieldableTask task)
{
object fiberResult = null;
// TODO: Cleanup
//
// This uses internal setters to fake starting the fiber
// and then uses internal Execute(). It should be possible to
// use public APIs instead to:
// 1. Set a fiber property to associate the task
// 2. Set an exception handler on the FiberScheduler
// 3. Retrieve the task in the handler from the fiber and set
// the exeption
// 4. Return from the handler without rethrowing
//
// This method could be removed then and the internal setters
// removed as well.
task.Fiber.Scheduler = scheduler;
task.Fiber.Status = FiberStatus.Running;
while(true)
{
try
{
// Throw here because the scheduler is disposed and will not
// run anything else. No further access is valid.
CancellationToken.ThrowIfCancellationRequested();
fiberResult = task.Fiber.Execute();
if(fiberResult is StopInstruction) {
// Check for exceptions
if (task.Fiber.IsFaulted) {
task.FiberException = task.Fiber.Exception;
}
yield break;
}
}
catch(System.Threading.OperationCanceledException ex)
{
// Fiber execution does not throw so the only exception
// expected is the cancellation above.
task.FiberException = ex;
yield break;
}
yield return fiberResult;
}
}
/// <summary>
/// Creates a new task and starts executing it.
/// </summary>
/// <returns>
/// The new executing task.
/// </returns>
/// <param name='taskFactory'>
/// Task factory to start with.
/// </param>
/// <param name='instruction'>
/// The instruction to start.
/// </param>
/// <param name='cancellationToken'>
/// Cancellation token.
/// </param>
/// <param name='creationOptions'>
/// Creation options.
/// </param>
/// <param name='scheduler'>
/// Scheduler.
/// </param>
public static Task StartNew(this TaskFactory taskFactory, FiberInstruction instruction, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler)
{
var task = new YieldableTask (instruction, cancellationToken, creationOptions);
task.Start (scheduler);
return task;
}
/// <summary>
/// Creates a new task and starts executing it.
/// </summary>
/// <returns>
/// The new executing task.
/// </returns>
/// <param name='taskFactory'>
/// Task factory to start with.
/// </param>
/// <param name='coroutine'>
/// The coroutine to start.
/// </param>
/// <param name='cancellationToken'>
/// Cancellation token.
/// </param>
/// <param name='creationOptions'>
/// Creation options.
/// </param>
/// <param name='scheduler'>
/// Scheduler.
/// </param>
public static Task StartNew(this TaskFactory taskFactory, IEnumerator coroutine, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler)
{
var task = new YieldableTask (coroutine, cancellationToken, creationOptions);
task.Start (scheduler);
return task;
}
/// <summary>
/// Continues the task with a coroutine.
/// </summary>
/// <returns>
/// The continued task.
/// </returns>
/// <param name='task'>
/// Task to continue.
/// </param>
/// <param name='instruction'>
/// The instruction to continue with.
/// </param>
/// <param name='cancellationToken'>
/// Cancellation token.
/// </param>
/// <param name='continuationOptions'>
/// Continuation options.
/// </param>
/// <param name='scheduler'>
/// Scheduler to use when scheduling the task.
/// </param>
public static Task ContinueWith(this Task task, FiberInstruction instruction, CancellationToken cancellationToken, TaskContinuationOptions continuationOptions, TaskScheduler scheduler)
{
if (instruction == null)
throw new ArgumentNullException ("instruction");
if (scheduler == null)
throw new ArgumentNullException ("scheduler");
if (!(scheduler is FiberTaskScheduler))
throw new ArgumentException ("The scheduler for a YieldableTask must be a FiberTaskScheduler", "scheduler");
// This creates a continuation that runs on the default scheduler (e.g. ThreadPool)
// where it's OK to wait on a child task to complete. The child task is scheduled
// on the given scheduler and attached to the parent.
//var outerScheduler = TaskScheduler.Current;
//if(outerScheduler is MonoBehaviourTaskScheduler)
// outerScheduler = TaskScheduler.Default;
var outerScheduler = TaskScheduler.Default;
return task.ContinueWith((Task antecedent) => {
var yieldableTask = new YieldableTask(instruction, cancellationToken, TaskCreationOptions.AttachedToParent);
yieldableTask.Start(scheduler);
}, cancellationToken, continuationOptions, outerScheduler);
}
private IEnumerator TestFuncTaskCoroutine()
{
var scheduler = new FiberTaskScheduler();
var task = new YieldableTask(() => new YieldForSeconds(2));
task.Start(scheduler);
while (!task.IsCompleted)
yield return FiberInstruction.YieldToAnyFiber;
}
public void TestInstructionInTask()
{
var start = DateTime.Now;
using (var backgroundFiberScheduler = SystemFiberScheduler.StartNew()) {
// Submit a task to the background scheduler and wait for it to complete
var task = new YieldableTask(new YieldForSeconds(2));
task.RunSynchronously(new FiberTaskScheduler(backgroundFiberScheduler));
}
var end = DateTime.Now;
Assert.GreaterOrEqual(end - start, TimeSpan.FromSeconds(2));
Assert.LessOrEqual(end - start, TimeSpan.FromSeconds(3));
}
