icinga2/base/object.h

80 lines
2.5 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
* *
* 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 General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef OBJECT_H
#define OBJECT_H
namespace icinga
{
/**
* Base class for all heap-allocated objects. At least one of its methods
* has to be virtual for RTTI to work.
*
* @ingroup base
*/
class I2_BASE_API Object : public enable_shared_from_this<Object>, public boost::signals::trackable
{
public:
typedef shared_ptr<Object> Ptr;
typedef weak_ptr<Object> WeakPtr;
static void ClearHeldObjects(void);
protected:
Object(void);
virtual ~Object(void);
void Hold(void);
private:
Object(const Object& other);
Object operator=(const Object& rhs);
static vector<Object::Ptr> m_HeldObjects;
};
/**
* Compares a weak pointer with a raw pointer.
*/
template<class T>
struct WeakPtrEqual
{
private:
const void *m_Ref;
public:
WeakPtrEqual(const void *ref) : m_Ref(ref) { }
/**
* Compares the two pointers.
*
* @param wref The weak pointer.
* @returns true if the pointers point to the same object, false otherwise.
*/
bool operator()(const weak_ptr<T>& wref) const
{
return (wref.lock().get() == (const T *)m_Ref);
}
};
}
#endif /* OBJECT_H */