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/* -*- mode: C; c-file-style: "gnu" -*- */
/* dbus-dataslot.h storing data on objects
*
* Copyright (C) 2003 Red Hat, Inc.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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;
/** Opaque typedef for DBusDataSlot */
typedef struct DBusDataSlot DBusDataSlot;
/** DBusDataSlot is used to store application data on the connection */
struct DBusDataSlot
{
void *data; /**< The application data */
DBusFreeFunction free_data_func; /**< Free the application data */
};
typedef struct DBusAllocatedSlot DBusAllocatedSlot;
/** An allocated slot for storing data
*/
struct DBusAllocatedSlot
{
dbus_int32_t slot_id; /**< ID of this slot */
int refcount; /**< Number of uses of the slot */
};
/**
* An allocator that tracks a set of slot IDs.
*/
struct DBusDataSlotAllocator
{
DBusAllocatedSlot *allocated_slots; /**< Allocated slots */
int n_allocated_slots; /**< number of slots malloc'd */
int n_used_slots; /**< number of slots used */
DBusMutex *lock; /**< thread lock */
};
/**
* Data structure that stores the actual user data set at a given
* slot.
*/
struct DBusDataSlotList
{
DBusDataSlot *slots; /**< Data slots */
int n_slots; /**< Slots we have storage for in data_slots */
};
dbus_bool_t _dbus_data_slot_allocator_init (DBusDataSlotAllocator *allocator);
dbus_bool_t _dbus_data_slot_allocator_alloc (DBusDataSlotAllocator *allocator,
DBusMutex *mutex,
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 */
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