public override Task ScheduleAsync(Action action, TimeSpan delay, CancellationToken cancellationToken)
{
Contract.Requires(action != null);
if (cancellationToken.IsCancellationRequested)
{
return(TaskEx.Cancelled);
}
if (!cancellationToken.CanBeCanceled)
{
return(this.Schedule(action, delay).Completion);
}
return(this.Schedule(new ActionScheduledAsyncTask(this, action, PreciseTimeSpan.Deadline(delay), cancellationToken)).Completion);
}
bool RunAllTasks(PreciseTimeSpan timeout)
{
this.FetchFromScheduledTaskQueue();
IRunnable task = this.PollTask();
if (task == null)
{
return(false);
}
PreciseTimeSpan deadline = PreciseTimeSpan.Deadline(timeout);
long runTasks = 0;
PreciseTimeSpan executionTime;
while (true)
{
SafeExecute(task);
runTasks++;
// Check timeout every 64 tasks because nanoTime() is relatively expensive.
// XXX: Hard-coded value - will make it configurable if it is really a problem.
if ((runTasks & 0x3F) == 0)
{
executionTime = PreciseTimeSpan.FromStart;
if (executionTime >= deadline)
{
break;
}
}
task = this.PollTask();
if (task == null)
{
executionTime = PreciseTimeSpan.FromStart;
break;
}
}
this.lastExecutionTime = executionTime;
return(true);
}
public override IScheduledTask Schedule(IRunnable action, TimeSpan delay)
{
Contract.Requires(action != null);
return(this.Schedule(new RunnableScheduledTask(this, action, PreciseTimeSpan.Deadline(delay))));
}
public override Task ScheduleAsync(Action <object, object> action, object context, object state, TimeSpan delay, CancellationToken cancellationToken)
{
if (cancellationToken.IsCancellationRequested)
{
return(TaskEx.Cancelled);
}
if (!cancellationToken.CanBeCanceled)
{
return(this.Schedule(action, context, state, delay).Completion);
}
return(this.Schedule(new StateActionWithContextScheduledAsyncTask(this, action, context, state, PreciseTimeSpan.Deadline(delay), cancellationToken)).Completion);
}
public override IScheduledTask Schedule(Action <object, object> action, object context, object state, TimeSpan delay)
{
Contract.Requires(action != null);
return(this.Schedule(new StateActionWithContextScheduledTask(this, action, context, state, PreciseTimeSpan.Deadline(delay))));
}