static void QueueBackgroundWorkItemInternal(Func <CancellationToken, Task> workItem)
{
Debug.Assert(workItem != null);
BackgroundWorkScheduler scheduler = Volatile.Read(ref _backgroundWorkScheduler);
// If the scheduler doesn't exist, lazily create it, but only allow one instance to ever be published to the backing field
if (scheduler == null)
{
BackgroundWorkScheduler newlyCreatedScheduler = new BackgroundWorkScheduler(UnregisterObject, WriteUnhandledException);
scheduler = Interlocked.CompareExchange(ref _backgroundWorkScheduler, newlyCreatedScheduler, null) ?? newlyCreatedScheduler;
if (scheduler == newlyCreatedScheduler)
{
RegisterObject(scheduler); // Only call RegisterObject if we just created the "winning" one
}
}
scheduler.ScheduleWorkItem(workItem);
}
private void QueueBackgroundWorkItemInternal(Func<CancellationToken, Task> workItem) {
Debug.Assert(workItem != null);
BackgroundWorkScheduler scheduler = Volatile.Read(ref _backgroundWorkScheduler);
// If the scheduler doesn't exist, lazily create it, but only allow one instance to ever be published to the backing field
if (scheduler == null) {
BackgroundWorkScheduler newlyCreatedScheduler = new BackgroundWorkScheduler(UnregisterObject, Misc.WriteUnhandledExceptionToEventLog);
scheduler = Interlocked.CompareExchange(ref _backgroundWorkScheduler, newlyCreatedScheduler, null) ?? newlyCreatedScheduler;
if (scheduler == newlyCreatedScheduler) {
RegisterObject(scheduler); // Only call RegisterObject if we just created the "winning" one
}
}
scheduler.ScheduleWorkItem(workItem);
}