D-Bus: dbus-dataslot.h Source File

D-Bus 1.12.4

dbus-dataslot.h
1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-dataslot.h storing data on objects
3 *
4 * Copyright (C) 2003 Red Hat, Inc.
5 *
6 * Licensed under the Academic Free License version 2.1
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 */
23 #ifndef DBUS_DATASLOT_H
24 #define DBUS_DATASLOT_H
25
26 #include <dbus/dbus-internals.h>
27
28 DBUS_BEGIN_DECLS
29
30 typedef struct DBusDataSlotAllocator DBusDataSlotAllocator;
31 typedef struct DBusDataSlotList DBusDataSlotList;
32
34 typedef struct DBusDataSlot DBusDataSlot;
36 struct DBusDataSlot
37 {
38 void *data;
39 DBusFreeFunction free_data_func;
40 };
41
42 typedef struct DBusAllocatedSlot DBusAllocatedSlot;
43
46 struct DBusAllocatedSlot
47 {
48 dbus_int32_t slot_id;
49 int refcount;
50 };
51
55 struct DBusDataSlotAllocator
56 {
57 DBusAllocatedSlot *allocated_slots;
58 int n_allocated_slots;
59 int n_used_slots;
60 DBusGlobalLock lock;
61 };
62
63 #define _DBUS_DATA_SLOT_ALLOCATOR_INIT(x) { NULL, 0, 0, x }
64
69 struct DBusDataSlotList
70 {
71 DBusDataSlot *slots;
72 int n_slots;
73 };
74
75 dbus_bool_t _dbus_data_slot_allocator_init (DBusDataSlotAllocator *allocator,
76 DBusGlobalLock lock);
77 dbus_bool_t _dbus_data_slot_allocator_alloc (DBusDataSlotAllocator *allocator,
78 int *slot_id_p);
79 void _dbus_data_slot_allocator_free (DBusDataSlotAllocator *allocator,
80 int *slot_id_p);
81 void _dbus_data_slot_list_init (DBusDataSlotList *list);
82 dbus_bool_t _dbus_data_slot_list_set (DBusDataSlotAllocator *allocator,
83 DBusDataSlotList *list,
84 int slot,
85 void *data,
86 DBusFreeFunction free_data_func,
87 DBusFreeFunction *old_free_func,
88 void **old_data);
89 void* _dbus_data_slot_list_get (DBusDataSlotAllocator *allocator,
90 DBusDataSlotList *list,
91 int slot);
92 void _dbus_data_slot_list_clear (DBusDataSlotList *list);
93 void _dbus_data_slot_list_free (DBusDataSlotList *list);
94
95
96 DBUS_END_DECLS
97
98 #endif /* DBUS_DATASLOT_H */
DBusDataSlot::free_data_func
DBusFreeFunction free_data_func
Free the application data.
Definition: dbus-dataslot.h:39
DBusFreeFunction
void(* DBusFreeFunction)(void *memory)
The type of a function which frees a block of memory.
Definition: dbus-memory.h:64
DBusDataSlotAllocator::n_allocated_slots
int n_allocated_slots
number of slots malloc&#39;d
Definition: dbus-dataslot.h:58
DBUS_BEGIN_DECLS
#define DBUS_BEGIN_DECLS
Macro used prior to declaring functions in the D-Bus header files.
DBusAllocatedSlot
An allocated slot for storing data.
Definition: dbus-dataslot.h:46
DBusDataSlotAllocator::n_used_slots
int n_used_slots
number of slots used
Definition: dbus-dataslot.h:59
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
_dbus_data_slot_list_set
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)
Stores a pointer in the data slot list, along with an optional function to be used for freeing the da...
Definition: dbus-dataslot.c:221
DBusDataSlotList::slots
DBusDataSlot * slots
Data slots.
Definition: dbus-dataslot.h:71
_dbus_data_slot_list_clear
void _dbus_data_slot_list_clear(DBusDataSlotList *list)
Frees all data slots contained in the list, calling application-provided free functions if they exist...
Definition: dbus-dataslot.c:317
DBusAllocatedSlot::slot_id
dbus_int32_t slot_id
ID of this slot.
Definition: dbus-dataslot.h:48
_dbus_data_slot_list_get
void * _dbus_data_slot_list_get(DBusDataSlotAllocator *allocator, DBusDataSlotList *list, int slot)
Retrieves data previously set with _dbus_data_slot_list_set_data().
Definition: dbus-dataslot.c:285
_dbus_data_slot_list_init
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
Definition: dbus-dataslot.c:197
DBusDataSlotList
Data structure that stores the actual user data set at a given slot.
Definition: dbus-dataslot.h:69
DBusDataSlotAllocator
An allocator that tracks a set of slot IDs.
Definition: dbus-dataslot.h:55
DBusAllocatedSlot::refcount
int refcount
Number of uses of the slot.
Definition: dbus-dataslot.h:49
DBusDataSlotList::n_slots
int n_slots
Slots we have storage for in data_slots.
Definition: dbus-dataslot.h:72
DBusDataSlot::data
void * data
The application data.
Definition: dbus-dataslot.h:38
_dbus_data_slot_allocator_init
dbus_bool_t _dbus_data_slot_allocator_init(DBusDataSlotAllocator *allocator, DBusGlobalLock lock)
Initializes a data slot allocator object, used to assign integer IDs for data slots.
Definition: dbus-dataslot.c:46
_dbus_data_slot_allocator_alloc
dbus_bool_t _dbus_data_slot_allocator_alloc(DBusDataSlotAllocator *allocator, int *slot_id_p)
Allocates an integer ID to be used for storing data in a DBusDataSlotList.
Definition: dbus-dataslot.c:69
dbus_int32_t
int dbus_int32_t
A 32-bit signed integer on all platforms.
Definition: dbus-arch-deps.h:42
_dbus_data_slot_allocator_free
void _dbus_data_slot_allocator_free(DBusDataSlotAllocator *allocator, int *slot_id_p)
Deallocates an ID previously allocated with _dbus_data_slot_allocator_alloc().
Definition: dbus-dataslot.c:154
DBusDataSlotAllocator::allocated_slots
DBusAllocatedSlot * allocated_slots
Allocated slots.
Definition: dbus-dataslot.h:57
DBusDataSlot
DBusDataSlot is used to store application data on the connection.
Definition: dbus-dataslot.h:36
DBusDataSlotAllocator::lock
DBusGlobalLock lock
index of thread lock
Definition: dbus-dataslot.h:60
_dbus_data_slot_list_free
void _dbus_data_slot_list_free(DBusDataSlotList *list)
Frees the data slot list and all data slots contained in it, calling application-provided free functi...
Definition: dbus-dataslot.c:340
DBUS_END_DECLS
#define DBUS_END_DECLS
Macro used after declaring functions in the D-Bus header files.