/* ------------ Methods called only by FJTaskRunners ------------- */
/// <summary> Return a task from entry queue, or null if empty.
/// Called only by FJTaskRunner.scan().
///
/// </summary>
protected internal virtual FJTask PollEntryQueue(FJTaskRunner runner)
{
try
{
object o = entryQueue.Poll(0);
if (o is FJTask)
{
return(o as FJTask);
}
else if (o is InvokableCandidateFJTask)
{
InvokableCandidateFJTask i = o as InvokableCandidateFJTask;
return(i.AsInvokableFJTask(runner));
}
else if (o is IRunnable)
{
return(new FJTask.Wrap(o as IRunnable));
}
else if (o == null)
{
return(null);
}
else
{
throw new ArgumentException("unexpected object in queue", o != null ? o.GetType().Name : "null");
}
}
catch (System.Threading.ThreadInterruptedException)
{
// ignore interrupts
ThreadClass.Current.Interrupt();
return(null);
}
}
/// <summary> Start a task and wait it out. Returns when the task completes.</summary>
/// <exception cref="ThreadInterruptedException"> if current Thread is
/// interrupted before completion of the task.
/// </exception>
public virtual void Invoke(IRunnable r)
{
InvokableCandidateFJTask w = new InvokableCandidateFJTask(r, this);
entryQueue.Put(w);
SignalNewTask();
w.AwaitTermination();
}
/// <summary> Start a task and wait it out. Returns when the task completes.</summary>
/// <exception cref="ThreadInterruptedException"> if current Thread is
/// interrupted before completion of the task.
/// </exception>
public virtual void Invoke(IRunnable r)
{
InvokableCandidateFJTask w = new InvokableCandidateFJTask(r, this);
entryQueue.Put(w);
SignalNewTask();
w.AwaitTermination();
}
