private static void WaitWhileOccupied(ReadIndicator readIndicator)
{
while (!readIndicator.IsEmpty)
{
RE.Yield();
}
}
internal void EnterWriteLock()
{
RMonitor.Enter(_lockObj);
RUnordered.Write(ref _writerActive, 1);
RInterlocked.MemoryBarrierProcessWide();
while (ReadInProgress())
{
RE.Yield();
}
_snoop.BeginWrite();
return;
}
private void EnterSlow()
{
RMonitor.Enter(_lockObj);
RUnordered.Write(ref _holdingThreadId, Environment.CurrentManagedThreadId);
RInterlocked.MemoryBarrierProcessWide();
while (RUnordered.Read(ref _isHeld) == 1)
{
RE.Yield();
}
RUnordered.Write(ref _isHeld, 1);
RMonitor.Exit(_lockObj);
return;
}
private LockCookie EnterSlow()
{
RMonitor.Enter(_lockObj);
var oldEntry = RUnordered.Read(ref _current);
RUnordered.Write(ref _current, new LockCookie(Environment.CurrentManagedThreadId));
RInterlocked.MemoryBarrierProcessWide();
while (oldEntry != null && RUnordered.Read(ref oldEntry.Taken) == 1)
{
RE.Yield();
}
var current = RUnordered.Read(ref _current);
RUnordered.Write(ref current.Taken, 1);
RMonitor.Exit(_lockObj);
return(current);
}
