/*

 * Copyright (c) 2015, 2017, 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

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 */

#ifndef SHARE_GC_Z_ZMESSAGEPORT_HPP

#define SHARE_GC_Z_ZMESSAGEPORT_HPP

#include "gc/z/zFuture.hpp"

#include "gc/z/zList.hpp"

#include "memory/allocation.hpp"

#include "runtime/mutex.hpp"

template <typename T> class ZMessageRequest;

template <typename T>

class ZMessagePort {

private:

  typedef ZMessageRequest<T> Request;

  Monitor        _monitor;

  bool           _has_message;

  T              _message;

  uint64_t       _seqnum;

  ZList<Request> _queue;

public:

  ZMessagePort();

  void send_sync(T message);

  void send_async(T message);

  T receive();

  void ack();

};

class ZRendezvousPort {

private:

  ZMessagePort<bool> _port;

public:

  void signal();

  void wait();

  void ack();

};

#endif // SHARE_GC_Z_ZMESSAGEPORT_HPP