/// <summary>
/// Wait all tasks completition with try|cathc block.
/// </summary>
/// <returns>True if thread terminated because of timeout.</returns>
public async Task <bool> AwaitAllPending(TimeSpan?timeout = null)
{
var res = await TaskExt.WhenAll(_pendingTasks, timeout);
foreach (var t in _pendingTasks)
{
if (t.IsCanceled || t.IsCompleted || t.IsFaulted)
{
_pendingTasks.TryRemove(t);
}
}
return(res);
}
