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Datei: zNMethodData.hpp Sprache: C

/*
* Copyright (c) 2017, 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
* questions.
*/

#ifndef SHARE_GC_Z_ZNMETHODDATA_HPP
#define SHARE_GC_Z_ZNMETHODDATA_HPP

#include "gc/z/zAttachedArray.hpp"
#include "gc/z/zLock.hpp"
#include "memory/allocation.hpp"
#include "oops/oopsHierarchy.hpp"
#include "utilities/globalDefinitions.hpp"

class nmethod;
template <typename T> class GrowableArray;

class ZNMethodDataOops {
private:
  typedef ZAttachedArray<ZNMethodDataOops, oop*> AttachedArray;

  const AttachedArray _immediates;
  const bool          _has_non_immediates;

  ZNMethodDataOops(const GrowableArray<oop*>& immediates, bool has_non_immediates);

public:
  static ZNMethodDataOops* create(const GrowableArray<oop*>& immediates, bool has_non_immediates);
  static void destroy(ZNMethodDataOops* oops);

  size_t immediates_count() const;
  oop** immediates_begin() const;
  oop** immediates_end() const;

  bool has_non_immediates() const;
};

class ZNMethodData : public CHeapObj<mtGC> {
private:
  ZReentrantLock             _lock;
  ZNMethodDataOops* volatile _oops;

public:
  ZNMethodData();
  ~ZNMethodData();

  ZReentrantLock* lock();

  ZNMethodDataOops* oops() const;
  ZNMethodDataOops* swap_oops(ZNMethodDataOops* oops);
};

#endif // SHARE_GC_Z_ZNMETHODDATA_HPP

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