/// <summary>
/// Returns the blocker object supplied to the most recent
/// invocation of a park method that has not yet unblocked, or null
/// if not blocked. The value returned is just a momentary
/// snapshot -- the thread may have since unblocked or blocked on a
/// different blocker object.
/// </summary>
/// <param name="t"> the thread </param>
/// <returns> the blocker </returns>
/// <exception cref="NullPointerException"> if argument is null
/// @since 1.6 </exception>
public static Object GetBlocker(Thread t)
{
if (t == null)
{
throw new NullPointerException();
}
return(UNSAFE.getObjectVolatile(t, ParkBlockerOffset));
}
