101 lines
3.8 KiB
C
101 lines
3.8 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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/* dbus-dataslot.h storing data on objects
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*
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* Copyright (C) 2003 Red Hat, Inc.
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*
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* SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
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*
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* Licensed under the Academic Free License version 2.1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*/
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#ifndef DBUS_DATASLOT_H
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#define DBUS_DATASLOT_H
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#include <dbus/dbus-internals.h>
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DBUS_BEGIN_DECLS
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typedef struct DBusDataSlotAllocator DBusDataSlotAllocator;
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typedef struct DBusDataSlotList DBusDataSlotList;
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/** Opaque typedef for DBusDataSlot */
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typedef struct DBusDataSlot DBusDataSlot;
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/** DBusDataSlot is used to store application data on the connection */
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struct DBusDataSlot
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{
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void *data; /**< The application data */
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DBusFreeFunction free_data_func; /**< Free the application data */
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};
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typedef struct DBusAllocatedSlot DBusAllocatedSlot;
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/** An allocated slot for storing data
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*/
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struct DBusAllocatedSlot
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{
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dbus_int32_t slot_id; /**< ID of this slot */
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int refcount; /**< Number of uses of the slot */
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};
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/**
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* An allocator that tracks a set of slot IDs.
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*/
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struct DBusDataSlotAllocator
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{
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DBusAllocatedSlot *allocated_slots; /**< Allocated slots */
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int n_allocated_slots; /**< number of slots malloc'd */
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int n_used_slots; /**< number of slots used */
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DBusGlobalLock lock; /**< index of thread lock */
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};
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#define _DBUS_DATA_SLOT_ALLOCATOR_INIT(x) { NULL, 0, 0, x }
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/**
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* Data structure that stores the actual user data set at a given
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* slot.
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*/
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struct DBusDataSlotList
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{
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DBusDataSlot *slots; /**< Data slots */
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int n_slots; /**< Slots we have storage for in data_slots */
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};
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dbus_bool_t _dbus_data_slot_allocator_init (DBusDataSlotAllocator *allocator,
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DBusGlobalLock lock);
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dbus_bool_t _dbus_data_slot_allocator_alloc (DBusDataSlotAllocator *allocator,
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int *slot_id_p);
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void _dbus_data_slot_allocator_free (DBusDataSlotAllocator *allocator,
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int *slot_id_p);
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void _dbus_data_slot_list_init (DBusDataSlotList *list);
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dbus_bool_t _dbus_data_slot_list_set (DBusDataSlotAllocator *allocator,
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DBusDataSlotList *list,
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int slot,
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void *data,
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DBusFreeFunction free_data_func,
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DBusFreeFunction *old_free_func,
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void **old_data);
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void* _dbus_data_slot_list_get (DBusDataSlotAllocator *allocator,
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DBusDataSlotList *list,
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int slot);
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void _dbus_data_slot_list_clear (DBusDataSlotList *list);
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void _dbus_data_slot_list_free (DBusDataSlotList *list);
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DBUS_END_DECLS
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#endif /* DBUS_DATASLOT_H */
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