/// <summary>
/// Waits until the time is elapsed.
/// </summary>
/// <param name="untilDate">The until date.</param>
/// <param name="cancellationToken">The cancellation token.</param>
public static void WaitUntil(DateTime untilDate, CancellationToken cancellationToken = default)
{
void Callback(IWaitEvent waitEvent)
{
try
{
waitEvent.Complete();
waitEvent.Begin();
}
catch
{
// ignore
}
}
using (var delayLock = WaitEventFactory.Create(true))
{
using (var _ = new ExclusiveTimer(() => Callback(delayLock), 0, 15))
{
while (!cancellationToken.IsCancellationRequested && DateTime.UtcNow < untilDate)
{
delayLock.Wait();
}
}
}
}
private void DelayThreadPool()
{
if (_delayEvent == null)
{
_delayEvent = WaitEventFactory.Create(isCompleted: true, useSlim: true);
}
_delayEvent.Begin();
ThreadPool.QueueUserWorkItem(s =>
{
DelaySleep();
_delayEvent.Complete();
});
_delayEvent.Wait();
}