JDK14/Java14源码在线阅读

/*
 * 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.
 *
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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:

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