public SimFutureTask(TimeSpan ts,
CancellationToken token,
SimFuture <T> source) : base(() => {
if (token.IsCancellationRequested)
{
throw new TaskCanceledException();
}
if (!source.Completed)
{
throw new TimeoutException($"Promise timed out after {Moment.Print(ts)}");
}
if (source.Error != null)
{
throw source.Error;
}
return(source.Result);
}) {
Deadline = ts;
_token = token;
_source = source;
}
public void Run(Func <SimControl, Task> plan)
{
_haltError = null;
var watch = Stopwatch.StartNew();
var reason = "none";
Debug(LogType.RuntimeInfo, $"{"start".ToUpper()}");
Rand.Reinitialize(0);
using (var cluster = new SimCluster(Def, this)) {
Schedule(_scheduler, TimeSpan.Zero, _factory.StartNew(async() => {
var control = new SimControl(cluster, this);
try {
await plan(control);
} catch (Exception ex) {
Halt("Plan failed", ex);
}
}));
try {
var step = 0;
while (true)
{
step++;
var hasFuture = FutureQueue.TryGetFuture(out var o);
if (!hasFuture)
{
reason = "died";
break;
}
if (o.Time > _time)
{
_time = o.Time;
}
switch (o.Item)
{
case Task t:
o.Scheduler.Execute(t);
break;
default:
throw new InvalidOperationException();
}
if (_haltError != null || _haltMessage != null)
{
reason = "halt";
break;
}
if ((_time - _lastActivity) >= _maxInactiveTicks)
{
reason = "no activity " + Moment.Print(TimeSpan.FromTicks(_maxInactiveTicks));
break;
}
if (_steps >= MaxSteps)
{
reason = MaxSteps + " steps reached";
break;
}
if (_time >= MaxTicks)
{
reason = "max time";
break;
}
}
} catch (Exception ex) {
reason = "fatal";
_haltError = ex;
Console.WriteLine("Fatal: " + ex);
} finally {
if (_folder != null)
{
Directory.Delete(_folder, true);
}
}
watch.Stop();
var softTime = TimeSpan.FromTicks(_time);
var factor = softTime.TotalHours / watch.Elapsed.TotalHours;
if (_haltMessage != null)
{
reason = _haltMessage.ToUpper();
}
Debug(LogType.RuntimeInfo, $"{reason.ToUpper()} at {softTime}");
if (_haltError != null)
{
var demystify = _haltError.Demystify();
Console.WriteLine(demystify.GetType().Name + ": " + demystify.Message);
Console.WriteLine(demystify.StackTrace);
}
Console.WriteLine($"Simulated {Moment.Print(softTime)} in {_steps} steps.");
Console.WriteLine($"Took {Moment.Print(watch.Elapsed)} of real time (x{factor:F0} speed-up)");
// statistics
Console.WriteLine($"Stats: {FutureQueue.JumpCount} jumps, {cluster.Machines.Sum(m => m.Value.SocketCount)} sockets");
}
}
