protected sealed override async Task start()
{
if (_current == null)
{
_lockObject = LockObject.GetValue();
await _lockObject.WaitAsync().ConfigureAwait(false);
_current = Activity;
}
try
{
var task = _current.Start();
Status = _current.Status;
await task;
Status = _current.Status;
if (_current.Status.IsSuspended())
{
return;
}
}
catch
{
if (_lockObject != null)
{
_lockObject.Release();
_lockObject = null;
}
throw;
}
if (_lockObject != null)
{
_lockObject.Release();
_lockObject = null;
}
}