/*

 * Copyright (c) 2019, 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

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 */

#ifndef SHARE_GC_Z_ZSAFEDELETE_HPP

#define SHARE_GC_Z_ZSAFEDELETE_HPP

#include "gc/z/zArray.hpp"

#include "gc/z/zLock.hpp"

#include "metaprogramming/removeExtent.hpp"

template <typename T>

class ZSafeDeleteImpl {

private:

  typedef typename RemoveExtent<T>::type ItemT;

  ZLock*         _lock;

  uint64_t       _enabled;

  ZArray<ItemT*> _deferred;

  bool deferred_delete(ItemT* item);

  void immediate_delete(ItemT* item);

public:

  ZSafeDeleteImpl(ZLock* lock);

  void enable_deferred_delete();

  void disable_deferred_delete();

  void operator()(ItemT* item);

};

template <typename T>

class ZSafeDelete : public ZSafeDeleteImpl<T> {

private:

  ZLock _lock;

public:

  ZSafeDelete();

};

template <typename T>

class ZSafeDeleteNoLock : public ZSafeDeleteImpl<T> {

public:

  ZSafeDeleteNoLock();

};

#endif // SHARE_GC_Z_ZSAFEDELETE_HPP