/// <summary>
/// Start engine host.
/// This will start each task in registered in this host.
/// </summary>
/// <param name="token">
/// A CancellationToken to observe while waiting for the tasks to complete.
/// </param>
/// <param name="timeout">
/// The number of milliseconds to wait, or Infinite (-1) to wait indefinitely
/// </param>
public Task Start(CancellationToken token, Int32 timeout)
{
return(Task.Factory.StartNew(() =>
{
var watch = Stopwatch.StartNew();
// Try to start all tasks
var tasks = _tasks
.Select(p => Task.Factory.StartNew(() => p.Run(token)))
.ToArray();
// Engine started
SystemInformer.Notify(new EngineStarted(_taskNames));
try
{
// Wait for all tasks to be either completed or canceled
Task.WaitAll(tasks, timeout, token);
}
catch (OperationCanceledException)
{
// Do nothing
}
// Engine stopped
SystemInformer.Notify(new EngineStopped(watch.Elapsed));
}));
}
/// <summary>
/// Initialize Engine TaskEngine
/// </summary>
internal void Initialize()
{
// About to initialize
SystemInformer.Notify(new EngineInitializing());
// Initialize all tasks
foreach (var process in _tasks)
{
process.Init();
}
// All process initialized
SystemInformer.Notify(new EngineInitialized());
}