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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#include "vtkFilteringInformationKeyManager.h"
#include "vtkInformationKey.h"
#include <vector>
// Subclass vector so we can directly call constructor. This works
// around problems on Borland C++.
VTK_ABI_NAMESPACE_BEGIN
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::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;
}
//------------------------------------------------------------------------------
void vtkFilteringInformationKeyManager::ClassFinalize()
{
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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