/// <summary>
/// Create an object of type <paramref name="objectType"/> when the type is only known during runtime.
/// </summary>
/// <param name="objectType"></param>
/// <returns></returns>
public object Create(Type objectType)
{
if (Logger != null)
{
Logger.Trace("Attempting to create object of type " + objectType.Name);
}
if (!CreationMapping.ContainsKey(objectType))
{
throw new InvalidOperationException("There is no method to create this type!");
}
return(CreationMapping[objectType].Invoke(this));
}
protected async Task ExecuteWhenReady_Generic(Action job, bool block = false)
{
var jobID = Guid.NewGuid();
Logger.Trace($"Running job on async queue (blocking: {block}). ID: {jobID}");
AutoResetEvent myEvent = new AutoResetEvent(false);
AutoResetEvent currentJobEvent = default(AutoResetEvent);
//Grab the next signaler and add us as the last job
lock (QueueLock)
{
if (JobQueue.Count == 0)
{
Logger.Trace($"0 jobs in queue, so using a new reset event. It should instantly start");
currentJobEvent = new AutoResetEvent(true);
}
else
{
Logger.Trace($"{JobQueue.Count} jobs in queue, so using an existing reset event. It should start when all other jobs are finished.");
currentJobEvent = JobQueue.Last().Item2;
}
JobQueue.Enqueue(Tuple.Create(job, myEvent));
}
//Wait for our turn
Logger.Debug($"Waiting for turn for job {jobID}");
if (block)
{
currentJobEvent.WaitOne();
}
else
{
await Task.Run(() => currentJobEvent.WaitOne());
}
try
{
//Run our crap
Logger.Debug($"Beginning enqueued job: {jobID}");
job.Invoke();
Logger.Debug($"Completed job: {jobID}");
}
finally
{
//Remove ourselves from the queue FIRST, that way if we're the only thing in the queue and a new
//job gets added, it will either attach to our event which HASN'T been set yet, or it'll see
//nothing in the queue and not have any wait.
lock (QueueLock)
{
var dequeuedJob = JobQueue.Dequeue();
if (!object.ReferenceEquals(dequeuedJob.Item1, job))
{
throw new InvalidOperationException("The queue had a programming failure; the dequeued job is not the same as the one that just completed!");
}
}
//Tell the next person in line to go.
myEvent.Set();
}
}