--- a/hotspot/src/share/vm/gc/shared/referencePendingListLocker.hpp	Mon Sep 19 05:31:53 2016 +0530
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,95 +0,0 @@
-/*
- * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- *
- */
-
-#ifndef SHARE_VM_GC_SHARED_REFERENCEPENDINGLISTLOCKER_HPP
-#define SHARE_VM_GC_SHARED_REFERENCEPENDINGLISTLOCKER_HPP
-
-#include "memory/allocation.hpp"
-#include "runtime/basicLock.hpp"
-#include "runtime/mutex.hpp"
-#include "runtime/thread.hpp"
-#include "utilities/exceptions.hpp"
-
-//
-// The ReferencePendingListLockerThread locks and unlocks the reference
-// pending list lock on behalf a non-Java thread, typically a concurrent
-// GC thread. This interface should not be directly accessed. All uses
-// should instead go through the ReferencePendingListLocker, which calls
-// this thread if needed.
-//
-class ReferencePendingListLockerThread : public JavaThread {
-private:
-  enum Message {
-    NONE,
-    LOCK,
-    UNLOCK
-  };
-
-  Monitor _monitor;
-  Message _message;
-
-  ReferencePendingListLockerThread();
-
-  static void start(JavaThread* thread, TRAPS);
-
-  void send_message(Message message);
-  void receive_and_handle_messages();
-
-public:
-  static ReferencePendingListLockerThread* create(TRAPS);
-
-  virtual bool is_hidden_from_external_view() const;
-
-  void lock();
-  void unlock();
-};
-
-//
-// The ReferencePendingListLocker is the main interface for locking and
-// unlocking the reference pending list lock, which needs to be held by
-// the GC when adding references to the pending list. Since this is a
-// Java-level monitor it can only be locked/unlocked by a Java thread.
-// For this reason there is an option to spawn a helper thread, the
-// ReferencePendingListLockerThread, during initialization. If a helper
-// thread is spawned all lock operations from non-Java threads will be
-// delegated to the helper thread. The helper thread is typically needed
-// by concurrent GCs.
-//
-class ReferencePendingListLocker VALUE_OBJ_CLASS_SPEC {
-private:
-  static bool                              _is_initialized;
-  static ReferencePendingListLockerThread* _locker_thread;
-  BasicLock                                _basic_lock;
-
-public:
-  static void initialize(bool needs_locker_thread, TRAPS);
-  static bool is_initialized();
-
-  static bool is_locked_by_self();
-
-  void lock();
-  void unlock();
-};
-
-#endif // SHARE_VM_GC_SHARED_REFERENCEPENDINGLISTLOCKER_HPP