dbus-dataslot.h

/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-dataslot.h  storing data on objects
 *
 * Copyright (C) 2003 Red Hat, Inc.
 *
 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
 *
 * Licensed under the Academic Free License version 2.1
 *
 * 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */
#ifndef DBUS_DATASLOT_H
#define DBUS_DATASLOT_H
 
#include <dbus/dbus-internals.h>
 
DBUS_BEGIN_DECLS
 
typedef struct DBusDataSlotAllocator DBusDataSlotAllocator;
typedef struct DBusDataSlotList DBusDataSlotList;
 
typedef struct DBusDataSlot DBusDataSlot;
struct DBusDataSlot
{
  void *data;                      
  DBusFreeFunction free_data_func; 
};
 
typedef struct DBusAllocatedSlot DBusAllocatedSlot;
 
struct DBusAllocatedSlot
{
  dbus_int32_t slot_id;  
  int          refcount; 
};
 
struct DBusDataSlotAllocator
{
  DBusAllocatedSlot *allocated_slots; 
  int  n_allocated_slots; 
  int  n_used_slots;      
  DBusGlobalLock lock;    
};
 
#define _DBUS_DATA_SLOT_ALLOCATOR_INIT(x) { NULL, 0, 0, x }
 
struct DBusDataSlotList
{
  DBusDataSlot *slots;   
  int           n_slots; 
};
 
dbus_bool_t _dbus_data_slot_allocator_init  (DBusDataSlotAllocator  *allocator,
                                             DBusGlobalLock          lock);
dbus_bool_t _dbus_data_slot_allocator_alloc (DBusDataSlotAllocator  *allocator,
                                             int                    *slot_id_p);
void        _dbus_data_slot_allocator_free  (DBusDataSlotAllocator  *allocator,
                                             int                    *slot_id_p);
void        _dbus_data_slot_list_init       (DBusDataSlotList       *list);
dbus_bool_t _dbus_data_slot_list_set        (DBusDataSlotAllocator  *allocator,
                                             DBusDataSlotList       *list,
                                             int                     slot,
                                             void                   *data,
                                             DBusFreeFunction        free_data_func,
                                             DBusFreeFunction       *old_free_func,
                                             void                  **old_data);
void*       _dbus_data_slot_list_get        (DBusDataSlotAllocator  *allocator,
                                             DBusDataSlotList       *list,
                                             int                     slot);
void        _dbus_data_slot_list_clear      (DBusDataSlotList       *list);
void        _dbus_data_slot_list_free       (DBusDataSlotList       *list);
 
 
DBUS_END_DECLS
 
#endif /* DBUS_DATASLOT_H */