167         long leastDiff = 0;

   167         for (JavaThread thread = first(); thread != null; thread = thread.next()) {

   168         boolean leastDiffInitialized = false;

   168           if (thread.isLockOwned(o))

   169         JavaThread theOwner = null;

   169             return thread;

   170         for (JavaThread thread = first(); thread != null; thread = thread.next()) {

   170         }

   171             Address addr = thread.highestLock();

   171         return null;

   172             if (addr == null || addr.lessThan(o)) continue;

   173             long diff = addr.minus(o);

   174             if (!leastDiffInitialized || diff < leastDiff) {

   175                 leastDiffInitialized = true;

   176                 leastDiff = diff;

   177                 theOwner = thread;

   178             }

   179         }

   180         return theOwner;