Ioss_DynamicTopologyObserver.h

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// Copyright(C) 2024 National Technology & Engineering Solutions
// of Sandia, LLC (NTESS).  Under the terms of Contract DE-NA0003525 with
// NTESS, the U.S. Government retains certain rights in this software.
//
// See packages/seacas/LICENSE for details
 
#pragma once
 
#include "Ioss_DynamicTopology.h"
 
#include "Ioss_CodeTypes.h"
#include "Ioss_DBUsage.h"
#include "Ioss_DatabaseIO.h"      // for DatabaseIO
#include "Ioss_ParallelUtils.h"   // for ParallelUtils
#include "Ioss_PropertyManager.h" // for PropertyManager
#include "Ioss_Utils.h"
#include "ioss_export.h"
 
#include <cstddef> // for size_t, nullptr
#include <cstdint> // for int64_t
#include <iomanip>
#include <sstream>
#include <string> // for string, operator<
 
namespace Ioss {
  class Region;
  class DynamicTopologyNotifier;
 
  class IOSS_EXPORT DynamicTopologyObserver
  {
  public:
    explicit DynamicTopologyObserver(Region *region) : m_region(region) {}
 
    virtual ~DynamicTopologyObserver() = default;
 
    virtual void reset_topology_modification_all();
    virtual void reset_topology_modification();
    virtual void set_topology_modification(unsigned int type);
    virtual void sync_topology_modification(unsigned int modFlag, unsigned int cumulativeModFlag);
    virtual unsigned int get_topology_modification() const;
 
    virtual unsigned int get_cumulative_topology_modification() const;
    virtual void         set_cumulative_topology_modification(unsigned int type);
 
    int get_cumulative_topology_modification_field();
 
    virtual bool is_topology_modified() const;
    virtual bool is_automatic_restart() const { return m_automaticRestart; }
    virtual bool is_restart_requested() const { return m_restartRequested; }
 
    void set_automatic_restart(bool flag) { m_automaticRestart = flag; }
    void set_restart_requested(bool flag) { m_restartRequested = flag; }
 
    static std::string topology_modification_change_name()
    {
      return std::string("CUMULATIVE_TOPOLOGY_MODIFICATION");
    }
 
    void    register_region(Region *region);
    Region *get_region() const { return m_region; }
 
    void                     register_notifier(DynamicTopologyNotifier *notifier);
    DynamicTopologyNotifier *get_notifier() const { return m_notifier; }
 
    virtual void define_model();
    virtual void write_model();
    virtual void define_transient();
 
    virtual FileControlOption get_control_option() const { return FileControlOption::CONTROL_NONE; }
 
    virtual bool needs_new_output_file() const;
 
  protected:
    Region      *m_region{nullptr};
    unsigned int m_topologyModification{TOPOLOGY_SAME};
    unsigned int m_cumulativeTopologyModification{TOPOLOGY_SAME};
 
    bool m_automaticRestart{false};
    bool m_restartRequested{false};
 
    DynamicTopologyNotifier *m_notifier{nullptr};
 
    void                                verify_region_is_registered() const;
    IOSS_NODISCARD const ParallelUtils &util() const;
    void                                synchronize_topology_modified_flags();
 
    void set_topology_modification_nl(unsigned int type);
 
  private:
    DynamicTopologyObserver();
  };
 
} // namespace Ioss