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 * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
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 * published by the Free Software Foundation.
 *
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 * 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_RUNTIME_MONITORINFO_HPP
#define SHARE_RUNTIME_MONITORINFO_HPP

#include "memory/allocation.hpp"
#include "oops/oopsHierarchy.hpp"
#include "runtime/handles.hpp"

class BasicLock;

// A MonitorInfo is a ResourceObject that describes a the pair:
// 1) the owner of the monitor
// 2) the monitor lock
class MonitorInfo : public ResourceObj {
 private:
  Handle     _owner; // the object owning the monitor
  BasicLock* _lock;
  Handle     _owner_klass; // klass (mirror) if owner was scalar replaced
  bool       _eliminated;
  bool       _owner_is_scalar_replaced;
 public:
  // Constructor
  MonitorInfo(oop owner, BasicLock* lock, bool eliminated, bool owner_is_scalar_replaced);
  // Accessors
  oop owner() const {
    assert(!_owner_is_scalar_replaced, "should not be called for scalar replaced object");
    return _owner();
  }
  Handle owner_h() const {
    assert(!_owner_is_scalar_replaced, "should not be called for scalar replaced object");
    return _owner;
  }
  oop owner_klass() const {
    assert(_owner_is_scalar_replaced, "should not be called for not scalar replaced object");
    return _owner_klass();
  }
  BasicLock* lock()  const { return _lock;  }
  bool eliminated()  const { return _eliminated; }
  bool owner_is_scalar_replaced()  const { return _owner_is_scalar_replaced; }
};

#endif // SHARE_RUNTIME_MONITORINFO_HPP