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/* EINA - EFL data type library
* Copyright (C) 20011 Cedric Bail
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library;
* if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EINA_REFCOUNT_H_
#define EINA_REFCOUNT_H_
/**
* @addtogroup Eina_Refcount References counting
*
* @brief Small macro that simplify references counting.
*
* References counting is not a difficult task, but you must
* handle it correctly every where, and that the issue. This
* set of macro do provide helper that will force to use the
* correct code in most case and reduce the bug likeliness.
* Of course this without affecting speed !
*/
/**
* @addtogroup Eina_Data_Types_Group Data Types
*
* @{
*/
/**
* @defgroup Eina_Refcount References counting
*
* @{
*/
/**
* @typedef Eina_Refcount
* Inlined references counting type.
*/
typedef int Eina_Refcount;
/** Used for declaring a reference counting member in a struct */
#define EINA_REFCOUNT Eina_Refcount __refcount
/** Used just after allocating a object */
#define EINA_REFCOUNT_INIT(Variable) (Variable)->__refcount = 1
/** Used when using referring to an object one more time */
#define EINA_REFCOUNT_REF(Variable) (Variable)->__refcount++
/** Used when removing a reference to an object. The code just after will automatically be called when necessary */
#define EINA_REFCOUNT_UNREF(Variable) \
if (--((Variable)->__refcount) == 0)
/** Get refcounting value */
#define EINA_REFCOUNT_GET(Variable) (Variable)->__refcount
/**
* @}
*/
/**
* @}
*/
#endif /* EINA_REFCOUNT_H_ */
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