MessageRank.h

// -*- tab-width: 2; indent-tabs-mode: nil; coding: utf-8-with-signature -*-
//-----------------------------------------------------------------------------
// Copyright 2000-2026 CEA (www.cea.fr) IFPEN (www.ifpenergiesnouvelles.com)
// See the top-level COPYRIGHT file for details.
// SPDX-License-Identifier: Apache-2.0
//-----------------------------------------------------------------------------
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/* MessageRank.h                                               (C) 2000-2025 */
/*                                                                           */
/* Rank of a message.                                                        */
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#ifndef ARCCORE_MESSAGEPASSING_MESSAGERANK_H
#define ARCCORE_MESSAGEPASSING_MESSAGERANK_H
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#include "arccore/message_passing/MessagePassingGlobal.h"
 
#include <iosfwd>
 
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namespace Arcane::MessagePassing
{
 
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class ARCCORE_MESSAGEPASSING_EXPORT MessageRank
{
 public:

  MessageRank()
  : m_rank(A_NULL_RANK)
  {}
 
  explicit MessageRank(Int32 rank)
  : m_rank(rank)
  {}
 
  friend bool operator==(const MessageRank& a, const MessageRank& b)
  {
    return a.m_rank == b.m_rank;
  }
  friend bool operator!=(const MessageRank& a, const MessageRank& b)
  {
    return a.m_rank != b.m_rank;
  }
  friend bool operator<(const MessageRank& a, const MessageRank& b)
  {
    return a.m_rank < b.m_rank;
  }

  Int32 value() const { return m_rank; }

  void setValue(Int32 rank) { m_rank = rank; }

  bool isNull() const { return m_rank == A_NULL_RANK; }

  bool isAnySource() const { return m_rank == A_ANY_SOURCE_RANK; }

  bool isProcNull() const { return m_rank == A_PROC_NULL_RANK; }

  static MessageRank anySourceRank() { return MessageRank(A_ANY_SOURCE_RANK); }

  static MessageRank procNullRank() { return MessageRank(A_PROC_NULL_RANK); }
 
  void print(std::ostream& o) const;
  friend inline std::ostream& operator<<(std::ostream& o, const MessageRank& tag)
  {
    tag.print(o);
    return o;
  }
 
 private:
 
  Int32 m_rank;
};
 
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} // namespace Arcane::MessagePassing
 
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#endif