internal override void RegisterRetryLatch(IRetryLatch latch, BaseVBoxBody expectedBody, int expectedEra)
{
if (_body != expectedBody)
{
//if it currently already contains a different version, we are done.
latch.Open(expectedEra);
return;
}
while (true)
{
if (_body != expectedBody)
{
//if it currently already contains a different version, we are done.
latch.Open(expectedEra);
return;
}
var initialValue = _listeners;
var result = Interlocked.CompareExchange(ref _listeners, _listeners.Add(latch), initialValue);
if (result != initialValue)
{
continue;
}
if (_body == expectedBody)
{
return;
}
//version has changed unregister
while (true)
{
initialValue = _listeners;
result = Interlocked.CompareExchange(ref _listeners, _listeners.Add(latch), initialValue);
if (result != initialValue)
{
continue;
}
return;
}
}
}
internal abstract void RegisterRetryLatch(IRetryLatch latch, BaseVBoxBody expectedBody, int expectedEra);