/// <summary>
/// Runs all tasks until no more scheduled tasks are left.
/// If a pending task schedules an additional task it will also be executed.
/// </summary>
public void RunTasksUntilIdle()
{
while (ScheduledTasks.Any())
{
RunPendingTasks();
}
}
private void TaskManagerWorkerLoop()
{
if (TaskManagerWorkerTask != null && TaskManagerWorkerTask.Status == TaskStatus.Running)
{
return;
}
TaskQueueStarted?.Invoke(this, new EventArgs());
var lastLog = DateTime.Now;
TaskManagerWorkerTask = Task.Run(() =>
{
Logger.LogInformation("Started QueueManagerTask loop at Task ID {0}", Task.CurrentId);
while (ActiveTasks.Any() || ScheduledTasks.Any())
{
if (!Running.Wait(500))
{
continue;
}
Thread.Sleep(500);
if ((DateTime.Now - lastLog).Seconds > WORKER_LOOP_LOGGER_INTERVAL_SECS)
{
lastLog = DateTime.Now;
Logger.LogInformation("Active: {1} <{#!#}> Running: {2} <{#!#}> Scheduled: {3}",
ActiveTasks.Count,
ActiveTasks.Count(t => t.Key.Status == TaskStatus.Running),
ScheduledTasks.Count);
}
lock (ActiveTasks)
{
foreach (var task in ActiveTasks.Where(t => t.Key.Status == TaskStatus.Created))
{
Logger.LogDebug("Starting Task ID {0}", task.Key.Id);
try
{
task.Key.Start();
task.Key.ContinueWith(t =>
{
ActiveTasks.TryRemove(t, out var emptyVar);
Logger.LogDebug("Task ID {0} has completed", t.Id);
TaskCompleted?.Invoke(this, task.Key);
});
TaskStarted?.Invoke(this, task.Key);
}
catch (Exception ex)
{
Logger.LogCritical(ex, "Error starting task {0}", task.Key.Id);
}
}
}
while (ActiveTasks.Count < MaximumConcurrentThreads && ScheduledTasks.Any())
{
// Keep TaskManager full to maximum by dequeueing scheduled tasks
// TODO: If these Try*s fail, weird things will happen; need to handle false cases
if (ScheduledTasks.TryDequeue(out var task))
{
Logger.LogDebug("Moving status of Task {0} from {1} to {2} ", task.Id, "scheduled",
"active");
ActiveTasks.TryAdd(task, false);
}
}
}
TaskManagerWorkerTask = null;
TaskQueueDrained?.Invoke(this, new EventArgs());
Logger.LogDebug("Task Queue drained");
});
//TaskManagerWorkerTask.Tag(WorkspaceId, true);
}