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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCommonInformationKeyManager.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkCommonInformationKeyManager.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 vtkCommonInformationKeyManagerKeysType : 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 vtkCommonInformationKeyManagerCount;
static vtkCommonInformationKeyManagerKeysType* vtkCommonInformationKeyManagerKeys;
//------------------------------------------------------------------------------
vtkCommonInformationKeyManager::vtkCommonInformationKeyManager()
{
if (++vtkCommonInformationKeyManagerCount == 1)
{
vtkCommonInformationKeyManager::ClassInitialize();
}
}
//------------------------------------------------------------------------------
vtkCommonInformationKeyManager::~vtkCommonInformationKeyManager()
{
if (--vtkCommonInformationKeyManagerCount == 0)
{
vtkCommonInformationKeyManager::ClassFinalize();
}
}
//------------------------------------------------------------------------------
void vtkCommonInformationKeyManager::Register(vtkInformationKey* key)
{
// Register this instance for deletion by the singleton.
vtkCommonInformationKeyManagerKeys->push_back(key);
}
//------------------------------------------------------------------------------
void vtkCommonInformationKeyManager::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(vtkCommonInformationKeyManagerKeysType));
vtkCommonInformationKeyManagerKeys = new (keys) vtkCommonInformationKeyManagerKeysType;
}
//------------------------------------------------------------------------------
void vtkCommonInformationKeyManager::ClassFinalize()
{
if (vtkCommonInformationKeyManagerKeys)
{
// Delete information keys.
for (vtkCommonInformationKeyManagerKeysType::iterator i =
vtkCommonInformationKeyManagerKeys->begin();
i != vtkCommonInformationKeyManagerKeys->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.
vtkCommonInformationKeyManagerKeys->~vtkCommonInformationKeyManagerKeysType();
free(vtkCommonInformationKeyManagerKeys);
vtkCommonInformationKeyManagerKeys = nullptr;
}
}
VTK_ABI_NAMESPACE_END
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