8291555: Implement alternative fast-locking scheme

Co-authored-by: Fei Yang <fyang@openjdk.org>
Co-authored-by: Thomas Stuefe <stuefe@openjdk.org>
Reviewed-by: dcubed, stuefe, shade, dholmes, dlong

src/hotspot/share/runtime/thread.cpp

@@ -526,6 +526,7 @@ void Thread::print_owned_locks_on(outputStream* st) const {
 // should be revisited, and they should be removed if possible.
 
 bool Thread::is_lock_owned(address adr) const {
+  assert(LockingMode != LM_LIGHTWEIGHT, "should not be called with new lightweight locking");
   return is_in_full_stack(adr);
 }