/usr/include/InsightToolkit/Common/itkLightObject.h is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
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Program: Insight Segmentation & Registration Toolkit
Module: itkLightObject.h
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
#ifndef __itkLightObject_h
#define __itkLightObject_h
#include "itkSmartPointer.h"
#include "itkTimeStamp.h"
#include "itkIndent.h"
#include "itkSimpleFastMutexLock.h"
#include "itkMacro.h"
#include <iostream>
#include <typeinfo>
#if defined(_WIN32)
// To get LONG defined
#include "itkWindows.h"
#elif defined(__APPLE__)
// To get MAC_OS_X_VERSION_MIN_REQUIRED defined
#include <AvailabilityMacros.h>
#endif
namespace itk
{
/** \class LightObject
* \brief Light weight base class for most itk classes.
*
* LightObject is the highest level base class for most itk objects. It
* implements reference counting and the API for object printing.
* It can be used as a lightweight base class in preference to Object.
* (LightObject does not support callbacks or modified time as Object
* does.) All ITK objects should be a subclass of LightObject or Object
* with few exceptions (due to performance concerns).
*
* \sa Object
* \ingroup ITKSystemObjects
* \ingroup DataRepresentation
*/
class ITKCommon_EXPORT LightObject
{
public:
/** Standard clas typedefs. */
typedef LightObject Self;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Method for creation through the object factory. */
static Pointer New();
/** Create an object from an instance, potentially deferring to a
* factory. This method allows you to create an instance of an
* object that is exactly the same type as the referring object.
* This is useful in cases where an object has been cast back to a
* base class. */
virtual Pointer CreateAnother() const;
/** Delete an itk object. This method should always be used to delete an
* object when the new operator was used to create it. Using the C
* delete method will not work with reference counting. */
virtual void Delete();
/** Return the name of this class as a string. Used by the object factory
* (implemented in New()) to instantiate objects of a named type. Also
* used for debugging and other output information. */
virtual const char *GetNameOfClass() const
{return "LightObject";}
#ifdef _WIN32
/** Used to avoid dll boundary problems. */
void* operator new(size_t);
void* operator new[](size_t);
void operator delete(void*);
void operator delete[](void*, size_t);
#endif
/** Cause the object to print itself out. */
void Print(std::ostream& os, Indent indent=0) const;
/** This method is called when itkExceptionMacro executes. It allows
* the debugger to break on error. */
static void BreakOnError();
/** Increase the reference count (mark as used by another object). */
virtual void Register() const;
/** Decrease the reference count (release by another object). */
virtual void UnRegister() const;
/** Gets the reference count on this object. */
virtual int GetReferenceCount() const
{return static_cast<int>(m_ReferenceCount);}
/** Sets the reference count on this object. This is a dangerous
* method, use it with care. */
virtual void SetReferenceCount(int);
protected:
LightObject():m_ReferenceCount(1) {}
virtual ~LightObject();
/** Methods invoked by Print() to print information about the object
* including superclasses. Typically not called by the user (use Print()
* instead) but used in the hierarchical print process to combine the
* output of several classes. */
virtual void PrintSelf(std::ostream& os, Indent indent) const;
virtual void PrintHeader(std::ostream& os, Indent indent) const;
virtual void PrintTrailer(std::ostream& os, Indent indent) const;
/** Define the type of the reference count according to the
target. This allows the use of atomic operations */
#if (defined(WIN32) || defined(_WIN32))
typedef LONG InternalReferenceCountType;
#elif defined(__APPLE__) && (MAC_OS_X_VERSION_MIN_REQUIRED >= 1050)
#if defined (__LP64__) && __LP64__
typedef volatile int64_t InternalReferenceCountType;
#else
typedef volatile int32_t InternalReferenceCountType;
#endif
#elif defined(__GLIBCPP__) || defined(__GLIBCXX__)
typedef _Atomic_word InternalReferenceCountType;
#else
typedef int InternalReferenceCountType;
#endif
/** Number of uses of this object by other objects. */
mutable InternalReferenceCountType m_ReferenceCount;
/** Mutex lock to protect modification to the reference count */
mutable SimpleFastMutexLock m_ReferenceCountLock;
private:
LightObject(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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