vtkFilteringInformationKeyManager.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkFilteringInformationKeyManager_h
#define vtkFilteringInformationKeyManager_h

#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkSystemIncludes.h"

#include "vtkDebugLeaksManager.h" // DebugLeaks exists longer than info keys.

#include <token/Singletons.h> // to increment its Schwarz counter

#include <functional> // for finalizers
#include <vector>     // for finalizers

VTK_ABI_NAMESPACE_BEGIN
class vtkInformationKey;

class VTKCOMMONEXECUTIONMODEL_EXPORT vtkFilteringInformationKeyManager
{
public:
  vtkFilteringInformationKeyManager();
  ~vtkFilteringInformationKeyManager();

  static void Register(vtkInformationKey* key);

  static void AddFinalizer(std::function<void()> finalizer);

private:
  // Unimplemented
  vtkFilteringInformationKeyManager(const vtkFilteringInformationKeyManager&) = delete;
  vtkFilteringInformationKeyManager& operator=(const vtkFilteringInformationKeyManager&) = delete;

  static void ClassInitialize();
  static void ClassFinalize();

  static std::vector<std::function<void()>>* Finalizers;
};

// This instance will show up in any translation unit that uses key
// types defined in vtkFiltering or that has a singleton.  It will
// make sure vtkFilteringInformationKeyManager's vector of keys is
// initialized before and destroyed after it is used.
static vtkFilteringInformationKeyManager vtkFilteringInformationKeyManagerInstance;

VTK_ABI_NAMESPACE_END
#endif
// VTK-HeaderTest-Exclude: vtkFilteringInformationKeyManager.h