/usr/include/commoncpp/pointer.h is in libucommon-dev 6.1.10-1.
This file is owned by root:root, with mode 0o644.
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// Copyright (C) 2006-2014 David Sugar, Tycho Softworks.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
// As a special exception to the GNU General Public License, permission is
// granted for additional uses of the text contained in its release
// of Common C++.
//
// The exception is that, if you link the Common C++ library with other
// files to produce an executable, this does not by itself cause the
// resulting executable to be covered by the GNU General Public License.
// Your use of that executable is in no way restricted on account of
// linking the Common C++ library code into it.
//
// This exception does not however invalidate any other reasons why
// the executable file might be covered by the GNU General Public License.
//
// This exception applies only to the code released under the
// name Common C++. If you copy code from other releases into a copy of
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way. To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for Common C++, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
/**
* @file commoncpp/pointer.h
* @short Template for creating reference count managed smart pointers.
**/
#ifndef COMMONCPP_POINTER_H_
#define COMMONCPP_POINTER_H_
#ifndef COMMONCPP_CONFIG_H_
#include <commoncpp/config.h>
#endif
namespace ost {
/**
* Used to create and manage referece counted pointers.
*
* @author David Sugar <dyfet@gnutelephony.org>
* @short reference counted pointer template.
*/
template <class T>
class Pointer
{
protected:
unsigned *ptrCount;
T *ptrObject;
inline void ptrDetach(void) {
if(ptrCount && --(*ptrCount)==0) {
delete ptrObject;
delete ptrCount;
}
ptrObject = NULL;
ptrCount = NULL;
}
public:
inline explicit Pointer(T* ptr = NULL) : ptrObject(ptr) {
ptrCount = new unsigned;
*ptrCount = 1;
}
inline Pointer(const Pointer<T> &ref) {
ptrObject = ref.ptrObject;
ptrCount = ref.ptrCount;
++(*ptrCount);
}
inline virtual ~Pointer()
{ptrDetach();}
inline Pointer& operator=(const Pointer<T> &ref) {
if(this != &ref) {
ptrDetach();
ptrObject = ref.ptrObject;
ptrCount = ref.ptrCount;
++(*ptrCount);
}
return *this;
}
inline T& operator*() const
{return *ptrObject;}
inline T* getObject() const
{return ptrObject;}
inline T* operator->() const
{return ptrObject;}
inline bool operator!() const
{return (*ptrCount == 1);}
inline int operator++() const
{return ++(*ptrCount);}
inline int operator--() const {
if(*ptrCount == 1) {
delete this;
return 0;
}
return --(*ptrCount);
}
};
} // namespace ost
#endif
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