title: Can I get the GCHandles for a pinned object from the object?
body: <p>I pin an object on .NET and get a GCHandle. I want to leak most of these GCHandle and forget about them (so the objects continue to be pinned). Later, for a few objects I want to unpin them. At that point I only have the object (or the address of the object).</p>
  
  <p>It seems each GCHandle pinning call returns a fresh GCHandle.
  The GCHandle.ToIntPtr and GCHandle.FromIntPtr show the native ints are equivalent to these GCHandles.</p>
  
  <p>Is it possible to get the GCHandle(s) from an object or from the AddrOfPinnedObject?</p>