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ladishd: generic object refcounting

This commit is contained in:
Nedko Arnaudov 2012-09-15 06:50:06 +03:00
parent 7558eefb1e
commit 08cec66e66
2 changed files with 75 additions and 1 deletions
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3
daemon/common.h
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@ -2,7 +2,7 @@
/*
* LADI Session Handler (ladish)
*
* Copyright (C) 2009,2010,2011 Nedko Arnaudov <nedko@arnaudov.name>
* Copyright (C) 2009,2010,2011,2012 Nedko Arnaudov <nedko@arnaudov.name>
*
**************************************************************************
* This file contains stuff that is needed almost everywhere in the ladishd
@ -33,6 +33,7 @@
#include <uuid/uuid.h>
#include "../cdbus/helpers.h"
#include "object.h"
/* ~/BASE_DIR is where studio, room and project xml files are stored */
#define BASE_DIR "/." BASE_NAME

73
daemon/object.h Normal file
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@ -0,0 +1,73 @@
/* -*- Mode: C ; c-basic-offset: 2 -*- */
/*
* LADI Session Handler (ladish)
*
* Copyright (C) 2012 Nedko Arnaudov <nedko@arnaudov.name>
*
**************************************************************************
* This file contains the generic object system functionality
**************************************************************************
*
* LADI Session Handler 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.
*
* LADI Session Handler 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 LADI Session Handler. If not, see <http://www.gnu.org/licenses/>
* or write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef OBJECT_H__897CDBE2_6438_4C66_8B39_0B4D4B3CE3EF__INCLUDED
#define OBJECT_H__897CDBE2_6438_4C66_8B39_0B4D4B3CE3EF__INCLUDED
#define LADISH_OBJECT_SIGNATURE 0x08032004
typedef void (* ladish_object_destructor)(void *);
struct ladish_object
{
unsigned int sig;
unsigned int refcount;
ladish_object_destructor destructor;
};
typedef struct ladish_object ladish_object;
#define LADISH_OBJECT_CHECK(obj_ptr) ASSERT(obj_ptr->sig == LADISH_OBJECT_SIGNATURE)
#define obj_ptr ((struct ladish_object *)obj)
static inline void ladish_object_init(void * obj, unsigned int refcount, ladish_object_destructor destructor)
{
obj_ptr->sig = LADISH_OBJECT_SIGNATURE;
obj_ptr->refcount = refcount;
obj_ptr->destructor = destructor;
}
static inline void ladish_add_ref(void * obj)
{
LADISH_OBJECT_CHECK(obj_ptr);
obj_ptr->refcount++;
}
static inline void ladish_del_ref(void * obj)
{
LADISH_OBJECT_CHECK(obj_ptr);
ASSERT(obj_ptr->refcount > 0);
obj_ptr->refcount--;
if (obj_ptr->refcount == 0)
{
obj_ptr->destructor(obj);
}
}
#undef obj_ptr
#endif /* #ifndef OBJECT_H__897CDBE2_6438_4C66_8B39_0B4D4B3CE3EF__INCLUDED */