/// <summary>
/// Starts a new ThreadSynchronizationContext, attaches it to
/// the thread, and then runs the given async main function.
/// </summary>
/// <param name="asyncMainFunc">
/// The Task-returning Func which represents the "main" function
/// for the thread.
/// </param>
public static void Start(Func <Task> asyncMainFunc)
{
// Is there already a synchronization context?
if (SynchronizationContext.Current != null)
{
throw new InvalidOperationException(
"A SynchronizationContext is already assigned on this thread.");
}
// Create and register a synchronization context for this thread
var threadSyncContext = new ThreadSynchronizationContext();
SynchronizationContext.SetSynchronizationContext(threadSyncContext);
// Get the main task and act on its completion
Task asyncMainTask = asyncMainFunc();
asyncMainTask.ContinueWith(
t => threadSyncContext.EndLoop(),
TaskScheduler.Default);
// Start the synchronization context's request loop and
// wait for the main task to complete
threadSyncContext.RunLoopOnCurrentThread();
asyncMainTask.GetAwaiter().GetResult();
}
/// <summary>
/// Starts a new ThreadSynchronizationContext, attaches it to
/// the thread, and then runs the given async main function.
/// </summary>
/// <param name="asyncMainFunc">
/// The Task-returning Func which represents the "main" function
/// for the thread.
/// </param>
public static void Start(Func<Task> asyncMainFunc)
{
// Is there already a synchronization context?
if (SynchronizationContext.Current != null)
{
throw new InvalidOperationException(
"A SynchronizationContext is already assigned on this thread.");
}
// Create and register a synchronization context for this thread
var threadSyncContext = new ThreadSynchronizationContext();
SynchronizationContext.SetSynchronizationContext(threadSyncContext);
// Get the main task and act on its completion
Task asyncMainTask = asyncMainFunc();
asyncMainTask.ContinueWith(
t => threadSyncContext.EndLoop(),
TaskScheduler.Default);
// Start the synchronization context's request loop and
// wait for the main task to complete
threadSyncContext.RunLoopOnCurrentThread();
asyncMainTask.GetAwaiter().GetResult();
}
