private static async Task CleanupReader(SignalTask readTask, CancellationTokenSource cancellationTokenSource)
{
using (cancellationTokenSource)
{
using (readTask)
{
if (null != cancellationTokenSource)
{
try
{
if (!cancellationTokenSource.IsCancellationRequested)
{
cancellationTokenSource.Cancel();
}
}
catch (Exception ex)
{
Debug.WriteLine("HlsPlaylistSegmentManager.CleanupReader() cancel failed: " + ex.Message);
}
}
if (null != readTask)
{
await readTask.WaitAsync().ConfigureAwait(false);
}
}
}
}
private async Task CloseAsync()
{
Debug.WriteLine("SmMediaManager.CloseAsync()");
TaskCompletionSource <object> closeTaskCompletionSource = new TaskCompletionSource <object>();
TaskCompletionSource <object> currentCloseTaskCompletionSource = Interlocked.CompareExchange(ref _closeTaskCompletionSource, closeTaskCompletionSource, null);
if (null != currentCloseTaskCompletionSource)
{
object obj = await currentCloseTaskCompletionSource.Task.ConfigureAwait(false);
Debug.WriteLine("SmMediaManager.CloseAsync() completed by other caller");
}
else
{
State = MediaManagerState.Closing;
TaskCompletionSource <object> playbackTaskCompletionSource = _playbackTaskCompletionSource;
_closeCancellationTokenSource.Cancel();
ConfiguredTaskAwaitable configuredTaskAwaitable = CloseCleanupAsync().ConfigureAwait(false);
await configuredTaskAwaitable;
State = MediaManagerState.Closed;
configuredTaskAwaitable = _reportStateTask.WaitAsync().ConfigureAwait(false);
await configuredTaskAwaitable;
Debug.WriteLine("SmMediaManager.CloseAsync() completed");
Interlocked.CompareExchange(ref _closeTaskCompletionSource, null, closeTaskCompletionSource);
Task task = TaskEx.Run(() =>
{
closeTaskCompletionSource.TrySetResult(null);
playbackTaskCompletionSource.TrySetResult(null);
});
TaskCollector.Default.Add(task, "SmMediaManager close");
}
}