/*

 * 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

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 */

#ifndef SHARE_GC_Z_ZLOCK_HPP

#define SHARE_GC_Z_ZLOCK_HPP

#include "memory/allocation.hpp"

class ZLock {

private:

public:

  void lock();

  bool try_lock();

  void unlock();

};

class ZReentrantLock {

private:

  ZLock            _lock;

  Thread* volatile _owner;

  uint64_t         _count;

public:

  ZReentrantLock();

  void lock();

  void unlock();

  bool is_owned() const;

};

template <typename T>

class ZLocker : public StackObj {

private:

  T* const _lock;

public:

  ZLocker(T* lock);

  ~ZLocker();

};

#endif // SHARE_GC_Z_ZLOCK_HPP