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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkFilteringInformationKeyManager.h"
#include "vtkCellMetadata.h"
#include "vtkInformationKey.h"
#include <vector>
VTK_ABI_NAMESPACE_BEGIN
std::vector<std::function<void()>>* vtkFilteringInformationKeyManager::Finalizers = nullptr;
// Subclass vector so we can directly call constructor. This works
// around problems on Borland C++.
struct vtkFilteringInformationKeyManagerKeysType : public std::vector<vtkInformationKey*>
{
typedef std::vector<vtkInformationKey*> Superclass;
typedef Superclass::iterator iterator;
};
//------------------------------------------------------------------------------
// Must NOT be initialized. Default initialization to zero is
// necessary.
static unsigned int vtkFilteringInformationKeyManagerCount;
static vtkFilteringInformationKeyManagerKeysType* vtkFilteringInformationKeyManagerKeys;
//------------------------------------------------------------------------------
vtkFilteringInformationKeyManager::vtkFilteringInformationKeyManager()
{
if (++vtkFilteringInformationKeyManagerCount == 1)
{
vtkFilteringInformationKeyManager::ClassInitialize();
}
}
//------------------------------------------------------------------------------
vtkFilteringInformationKeyManager::~vtkFilteringInformationKeyManager()
{
if (--vtkFilteringInformationKeyManagerCount == 0)
{
vtkFilteringInformationKeyManager::ClassFinalize();
}
}
//------------------------------------------------------------------------------
void vtkFilteringInformationKeyManager::Register(vtkInformationKey* key)
{
// Register this instance for deletion by the singleton.
vtkFilteringInformationKeyManagerKeys->push_back(key);
}
//------------------------------------------------------------------------------
void vtkFilteringInformationKeyManager::AddFinalizer(std::function<void()> finalizer)
{
if (!vtkFilteringInformationKeyManager::Finalizers)
{
vtkFilteringInformationKeyManager::Finalizers = new std::vector<std::function<void()>>();
}
vtkFilteringInformationKeyManager::Finalizers->push_back(finalizer);
}
//------------------------------------------------------------------------------
void vtkFilteringInformationKeyManager::ClassInitialize()
{
// Allocate the singleton storing pointers to information keys.
// This must be a malloc/free pair instead of new/delete to work
// around problems on MachO (Mac OS X) runtime systems that do lazy
// symbol loading. Calling operator new here causes static
// initialization to occur in other translation units immediately,
// which then may try to access the vector before it is set here.
void* keys = malloc(sizeof(vtkFilteringInformationKeyManagerKeysType));
vtkFilteringInformationKeyManagerKeys = new (keys) vtkFilteringInformationKeyManagerKeysType;
// The cell-metadata class cannot register its finalizer upon construction
// of the registrar since CommonDataModel cannot depend on CommonExecutionModel.
// So, we always register a finalizer for cell-grid responders.
vtkFilteringInformationKeyManager::AddFinalizer([]() { vtkCellMetadata::ClearResponders(); });
}
//------------------------------------------------------------------------------
void vtkFilteringInformationKeyManager::ClassFinalize()
{
// Allow persistent objects to be cleaned up before debugging leaks.
if (vtkFilteringInformationKeyManager::Finalizers)
{
for (const auto& finalizer : *vtkFilteringInformationKeyManager::Finalizers)
{
finalizer();
}
delete vtkFilteringInformationKeyManager::Finalizers;
vtkFilteringInformationKeyManager::Finalizers = nullptr;
}
if (vtkFilteringInformationKeyManagerKeys)
{
// Delete information keys.
for (vtkFilteringInformationKeyManagerKeysType::iterator i =
vtkFilteringInformationKeyManagerKeys->begin();
i != vtkFilteringInformationKeyManagerKeys->end(); ++i)
{
vtkInformationKey* key = *i;
delete key;
}
// Delete the singleton storing pointers to information keys. See
// ClassInitialize above for why this is a free instead of a
// delete.
vtkFilteringInformationKeyManagerKeys->~vtkFilteringInformationKeyManagerKeysType();
free(vtkFilteringInformationKeyManagerKeys);
vtkFilteringInformationKeyManagerKeys = nullptr;
}
}
VTK_ABI_NAMESPACE_END
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