D-Bus  1.13.16
dbus-pending-call.c
1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-pending-call.c Object representing a call in progress.
3  *
4  * Copyright (C) 2002, 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 
24 #include <config.h>
25 #include "dbus-internals.h"
26 #include "dbus-connection-internal.h"
27 #include "dbus-message-internal.h"
28 #include "dbus-pending-call-internal.h"
29 #include "dbus-pending-call.h"
30 #include "dbus-list.h"
31 #include "dbus-threads.h"
32 #include "dbus-test.h"
33 
53 #define CONNECTION_LOCK(connection) _dbus_connection_lock(connection)
54 
57 #define CONNECTION_UNLOCK(connection) _dbus_connection_unlock(connection)
58 
63 {
76  dbus_uint32_t reply_serial;
83  unsigned int completed : 1;
87  unsigned int timeout_added : 1;
88 };
89 
90 static void
91 _dbus_pending_call_trace_ref (DBusPendingCall *pending_call,
92  int old_refcount,
93  int new_refcount,
94  const char *why)
95 {
96 #ifdef DBUS_ENABLE_VERBOSE_MODE
97  static int enabled = -1;
98 
99  _dbus_trace_ref ("DBusPendingCall", pending_call, old_refcount,
100  new_refcount, why, "DBUS_PENDING_CALL_TRACE", &enabled);
101 #endif
102 }
103 
104 /* protected by _DBUS_LOCK_pending_call_slots */
105 static dbus_int32_t notify_user_data_slot = -1;
106 
119  int timeout_milliseconds,
120  DBusTimeoutHandler timeout_handler)
121 {
122  DBusPendingCall *pending;
123  DBusTimeout *timeout;
124 
125  _dbus_assert (timeout_milliseconds >= 0 || timeout_milliseconds == -1);
126 
127  if (timeout_milliseconds == -1)
128  timeout_milliseconds = _DBUS_DEFAULT_TIMEOUT_VALUE;
129 
130  if (!dbus_pending_call_allocate_data_slot (&notify_user_data_slot))
131  return NULL;
132 
133  pending = dbus_new0 (DBusPendingCall, 1);
134 
135  if (pending == NULL)
136  {
137  dbus_pending_call_free_data_slot (&notify_user_data_slot);
138  return NULL;
139  }
140 
141  if (timeout_milliseconds != DBUS_TIMEOUT_INFINITE)
142  {
143  timeout = _dbus_timeout_new (timeout_milliseconds,
144  timeout_handler,
145  pending, NULL);
146 
147  if (timeout == NULL)
148  {
149  dbus_pending_call_free_data_slot (&notify_user_data_slot);
150  dbus_free (pending);
151  return NULL;
152  }
153 
154  pending->timeout = timeout;
155  }
156  else
157  {
158  pending->timeout = NULL;
159  }
160 
161  _dbus_atomic_inc (&pending->refcount);
162  pending->connection = connection;
164 
166 
167  _dbus_pending_call_trace_ref (pending, 0, 1, "new_unlocked");
168 
169  return pending;
170 }
171 
180 void
182  DBusMessage *message)
183 {
184  if (message == NULL)
185  {
186  message = pending->timeout_link->data;
187  _dbus_list_clear (&pending->timeout_link);
188  }
189  else
190  dbus_message_ref (message);
191 
192  _dbus_verbose (" handing message %p (%s) to pending call serial %u\n",
193  message,
195  "method return" :
197  "error" : "other type",
198  pending->reply_serial);
199 
200  _dbus_assert (pending->reply == NULL);
202  pending->reply = message;
203 }
204 
215 void
217 {
218  _dbus_assert (!pending->completed);
219 
220  pending->completed = TRUE;
221 }
222 
232 void
234 {
235  _dbus_assert (pending->completed);
236 
237  if (pending->function)
238  {
239  void *user_data;
240  user_data = dbus_pending_call_get_data (pending,
241  notify_user_data_slot);
242 
243  (* pending->function) (pending, user_data);
244  }
245 }
246 
254 void
256  DBusConnection *connection)
257 {
258  _dbus_assert (connection == pending->connection);
259 
260  if (pending->timeout_link)
261  {
263  pending->timeout_link);
264  pending->timeout_link = NULL;
265  }
266 }
267 
276 {
277  _dbus_assert (pending != NULL);
278 
279  return pending->timeout_added;
280 }
281 
282 
289 void
291  dbus_bool_t is_added)
292 {
293  _dbus_assert (pending != NULL);
294 
295  pending->timeout_added = is_added;
296 }
297 
298 
305 DBusTimeout *
307 {
308  _dbus_assert (pending != NULL);
309 
310  return pending->timeout;
311 }
312 
319 dbus_uint32_t
321 {
322  _dbus_assert (pending != NULL);
323 
324  return pending->reply_serial;
325 }
326 
333 void
335  dbus_uint32_t serial)
336 {
337  _dbus_assert (pending != NULL);
338  _dbus_assert (pending->reply_serial == 0);
339 
340  pending->reply_serial = serial;
341 }
342 
351 {
352  _dbus_assert (pending != NULL);
353 
354  CONNECTION_LOCK (pending->connection);
355  return pending->connection;
356 }
357 
366 {
367  _dbus_assert (pending != NULL);
368 
369  return pending->connection;
370 }
371 
382  DBusMessage *message,
383  dbus_uint32_t serial)
384 {
385  DBusList *reply_link;
386  DBusMessage *reply;
387 
389  "Did not receive a reply. Possible causes include: "
390  "the remote application did not send a reply, "
391  "the message bus security policy blocked the reply, "
392  "the reply timeout expired, or "
393  "the network connection was broken.");
394  if (reply == NULL)
395  return FALSE;
396 
397  reply_link = _dbus_list_alloc_link (reply);
398  if (reply_link == NULL)
399  {
400  /* it's OK to unref this, nothing that could have attached a callback
401  * has ever seen it */
402  dbus_message_unref (reply);
403  return FALSE;
404  }
405 
406  pending->timeout_link = reply_link;
407 
409 
410  return TRUE;
411 }
412 
422 {
423  dbus_int32_t old_refcount;
424 
425  old_refcount = _dbus_atomic_inc (&pending->refcount);
426  _dbus_pending_call_trace_ref (pending, old_refcount, old_refcount + 1,
427  "ref_unlocked");
428 
429  return pending;
430 }
431 
432 
433 static void
434 _dbus_pending_call_last_unref (DBusPendingCall *pending)
435 {
436  DBusConnection *connection;
437 
438  /* If we get here, we should be already detached
439  * from the connection, or never attached.
440  */
441  _dbus_assert (!pending->timeout_added);
442 
443  connection = pending->connection;
444 
445  /* this assumes we aren't holding connection lock... */
447 
448  if (pending->timeout != NULL)
449  _dbus_timeout_unref (pending->timeout);
450 
451  if (pending->timeout_link)
452  {
455  pending->timeout_link = NULL;
456  }
457 
458  if (pending->reply)
459  {
460  dbus_message_unref (pending->reply);
461  pending->reply = NULL;
462  }
463 
464  dbus_free (pending);
465 
466  dbus_pending_call_free_data_slot (&notify_user_data_slot);
467 
468  /* connection lock should not be held. */
469  /* Free the connection last to avoid a weird state while
470  * calling out to application code where the pending exists
471  * but not the connection.
472  */
473  dbus_connection_unref (connection);
474 }
475 
483 void
485 {
486  dbus_int32_t old_refcount;
487 
488  old_refcount = _dbus_atomic_dec (&pending->refcount);
489  _dbus_assert (old_refcount > 0);
490  _dbus_pending_call_trace_ref (pending, old_refcount,
491  old_refcount - 1, "unref_and_unlock");
492 
493  CONNECTION_UNLOCK (pending->connection);
494 
495  if (old_refcount == 1)
496  _dbus_pending_call_last_unref (pending);
497 }
498 
508 {
509  return pending->completed;
510 }
511 
512 static DBusDataSlotAllocator slot_allocator =
513  _DBUS_DATA_SLOT_ALLOCATOR_INIT (_DBUS_LOCK_NAME (pending_call_slots));
514 
530  dbus_int32_t slot,
531  void *data,
532  DBusFreeFunction free_data_func)
533 {
534  DBusFreeFunction old_free_func;
535  void *old_data;
536  dbus_bool_t retval;
537 
538  retval = _dbus_data_slot_list_set (&slot_allocator,
539  &pending->slot_list,
540  slot, data, free_data_func,
541  &old_free_func, &old_data);
542 
543  /* Drop locks to call out to app code */
544  CONNECTION_UNLOCK (pending->connection);
545 
546  if (retval)
547  {
548  if (old_free_func)
549  (* old_free_func) (old_data);
550  }
551 
552  CONNECTION_LOCK (pending->connection);
553 
554  return retval;
555 }
556 
605 {
606  dbus_int32_t old_refcount;
607 
608  _dbus_return_val_if_fail (pending != NULL, NULL);
609 
610  old_refcount = _dbus_atomic_inc (&pending->refcount);
611  _dbus_pending_call_trace_ref (pending, old_refcount, old_refcount + 1,
612  "ref");
613 
614  return pending;
615 }
616 
623 void
625 {
626  dbus_int32_t old_refcount;
627 
628  _dbus_return_if_fail (pending != NULL);
629 
630  old_refcount = _dbus_atomic_dec (&pending->refcount);
631  _dbus_pending_call_trace_ref (pending, old_refcount, old_refcount - 1,
632  "unref");
633 
634  if (old_refcount == 1)
635  _dbus_pending_call_last_unref(pending);
636 }
637 
651  void *user_data,
652  DBusFreeFunction free_user_data)
653 {
654  dbus_bool_t ret = FALSE;
655 
656  _dbus_return_val_if_fail (pending != NULL, FALSE);
657 
658  CONNECTION_LOCK (pending->connection);
659 
660  /* could invoke application code! */
661  if (!_dbus_pending_call_set_data_unlocked (pending, notify_user_data_slot,
662  user_data, free_user_data))
663  goto out;
664 
665  pending->function = function;
666  ret = TRUE;
667 
668 out:
669  CONNECTION_UNLOCK (pending->connection);
670 
671  return ret;
672 }
673 
689 void
691 {
692  _dbus_return_if_fail (pending != NULL);
693 
695  pending);
696 }
697 
707 {
708  dbus_bool_t completed;
709 
710  _dbus_return_val_if_fail (pending != NULL, FALSE);
711 
712  CONNECTION_LOCK (pending->connection);
713  completed = pending->completed;
714  CONNECTION_UNLOCK (pending->connection);
715 
716  return completed;
717 }
718 
730 {
731  DBusMessage *message;
732 
733  _dbus_return_val_if_fail (pending != NULL, NULL);
734  _dbus_return_val_if_fail (pending->completed, NULL);
735  _dbus_return_val_if_fail (pending->reply != NULL, NULL);
736 
737  CONNECTION_LOCK (pending->connection);
738 
739  message = pending->reply;
740  pending->reply = NULL;
741 
742  CONNECTION_UNLOCK (pending->connection);
743 
744  _dbus_message_trace_ref (message, -1, -1, "dbus_pending_call_steal_reply");
745  return message;
746 }
747 
763 void
765 {
766  _dbus_return_if_fail (pending != NULL);
767 
769 }
770 
787 {
788  _dbus_return_val_if_fail (slot_p != NULL, FALSE);
789 
790  return _dbus_data_slot_allocator_alloc (&slot_allocator,
791  slot_p);
792 }
793 
805 void
806 dbus_pending_call_free_data_slot (dbus_int32_t *slot_p)
807 {
808  _dbus_return_if_fail (slot_p != NULL);
809  _dbus_return_if_fail (*slot_p >= 0);
810 
811  _dbus_data_slot_allocator_free (&slot_allocator, slot_p);
812 }
813 
829  dbus_int32_t slot,
830  void *data,
831  DBusFreeFunction free_data_func)
832 {
833  dbus_bool_t retval;
834 
835  _dbus_return_val_if_fail (pending != NULL, FALSE);
836  _dbus_return_val_if_fail (slot >= 0, FALSE);
837 
838 
839  CONNECTION_LOCK (pending->connection);
840  retval = _dbus_pending_call_set_data_unlocked (pending, slot, data, free_data_func);
841  CONNECTION_UNLOCK (pending->connection);
842  return retval;
843 }
844 
853 void*
855  dbus_int32_t slot)
856 {
857  void *res;
858 
859  _dbus_return_val_if_fail (pending != NULL, NULL);
860 
861  CONNECTION_LOCK (pending->connection);
862  res = _dbus_data_slot_list_get (&slot_allocator,
863  &pending->slot_list,
864  slot);
865  CONNECTION_UNLOCK (pending->connection);
866 
867  return res;
868 }
869 
_dbus_timeout_new
DBusTimeout * _dbus_timeout_new(int interval, DBusTimeoutHandler handler, void *data, DBusFreeFunction free_data_function)
Creates a new DBusTimeout, enabled by default.
Definition: dbus-timeout.c:64
_dbus_atomic_dec
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
Definition: dbus-sysdeps-unix.c:3038
_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:286
dbus_pending_call_get_data
void * dbus_pending_call_get_data(DBusPendingCall *pending, dbus_int32_t slot)
Retrieves data previously set with dbus_pending_call_set_data().
Definition: dbus-pending-call.c:854
CONNECTION_LOCK
#define CONNECTION_LOCK(connection)
Internals of DBusPendingCall.
Definition: dbus-pending-call.c:53
_dbus_connection_queue_synthesized_message_link
void _dbus_connection_queue_synthesized_message_link(DBusConnection *connection, DBusList *link)
Adds a link + message to the incoming message queue.
Definition: dbus-connection.c:545
_dbus_pending_call_get_reply_serial_unlocked
dbus_uint32_t _dbus_pending_call_get_reply_serial_unlocked(DBusPendingCall *pending)
Gets the reply's serial number.
Definition: dbus-pending-call.c:320
dbus_message_ref
DBusMessage * dbus_message_ref(DBusMessage *message)
Increments the reference count of a DBusMessage.
Definition: dbus-message.c:1700
dbus_pending_call_set_data
dbus_bool_t dbus_pending_call_set_data(DBusPendingCall *pending, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusPendingCall, along with an optional function to be used for freeing the dat...
Definition: dbus-pending-call.c:828
DBusPendingCall::refcount
DBusAtomic refcount
reference count
Definition: dbus-pending-call.c:64
_dbus_pending_call_new_unlocked
DBusPendingCall * _dbus_pending_call_new_unlocked(DBusConnection *connection, int timeout_milliseconds, DBusTimeoutHandler timeout_handler)
Creates a new pending reply object.
Definition: dbus-pending-call.c:118
_dbus_list_clear
void _dbus_list_clear(DBusList **list)
Frees all links in the list and sets the list head to NULL.
Definition: dbus-list.c:543
dbus_message_unref
void dbus_message_unref(DBusMessage *message)
Decrements the reference count of a DBusMessage, freeing the message if the count reaches 0.
Definition: dbus-message.c:1723
DBusPendingCall::completed
unsigned int completed
TRUE if some thread has taken responsibility for completing this pending call: either the pending cal...
Definition: dbus-pending-call.c:83
DBusFreeFunction
void(* DBusFreeFunction)(void *memory)
Definition: dbus-memory.h:63
DBusPendingCall::timeout_added
unsigned int timeout_added
TRUE if we have added the timeout.
Definition: dbus-pending-call.c:87
_dbus_list_alloc_link
DBusList * _dbus_list_alloc_link(void *data)
Allocates a linked list node.
Definition: dbus-list.c:243
_dbus_pending_call_unref_and_unlock
void _dbus_pending_call_unref_and_unlock(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0.
Definition: dbus-pending-call.c:484
_dbus_pending_call_ref_unlocked
DBusPendingCall * _dbus_pending_call_ref_unlocked(DBusPendingCall *pending)
Increments the reference count on a pending call, while the lock on its connection is already held.
Definition: dbus-pending-call.c:421
_dbus_pending_call_is_timeout_added_unlocked
dbus_bool_t _dbus_pending_call_is_timeout_added_unlocked(DBusPendingCall *pending)
Checks to see if a timeout has been added.
Definition: dbus-pending-call.c:275
dbus_pending_call_free_data_slot
void dbus_pending_call_free_data_slot(dbus_int32_t *slot_p)
Deallocates a global ID for DBusPendingCall data slots.
Definition: dbus-pending-call.c:806
DBusConnection
Implementation details of DBusConnection.
Definition: dbus-connection.c:256
DBusPendingCall::reply_serial
dbus_uint32_t reply_serial
Expected serial of reply.
Definition: dbus-pending-call.c:76
dbus_pending_call_set_notify
dbus_bool_t dbus_pending_call_set_notify(DBusPendingCall *pending, DBusPendingCallNotifyFunction function, void *user_data, DBusFreeFunction free_user_data)
Sets a notification function to be called when the reply is received or the pending call times out.
Definition: dbus-pending-call.c:649
_dbus_connection_block_pending_call
void _dbus_connection_block_pending_call(DBusPendingCall *pending)
Blocks until a pending call times out or gets a reply.
Definition: dbus-connection.c:2380
DBusPendingCall::function
DBusPendingCallNotifyFunction function
Notifier when reply arrives.
Definition: dbus-pending-call.c:68
dbus_pending_call_unref
void dbus_pending_call_unref(DBusPendingCall *pending)
Decrements the reference count on a pending call, freeing it if the count reaches 0.
Definition: dbus-pending-call.c:624
TRUE
#define TRUE
DBUS_TIMEOUT_INFINITE
#define DBUS_TIMEOUT_INFINITE
Definition: dbus-pending-call.h:41
_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:222
DBusPendingCallNotifyFunction
void(* DBusPendingCallNotifyFunction)(DBusPendingCall *pending, void *user_data)
Called when a pending call now has a reply available.
Definition: dbus-connection.h:163
dbus_pending_call_steal_reply
DBusMessage * dbus_pending_call_steal_reply(DBusPendingCall *pending)
Gets the reply, or returns NULL if none has been received yet.
Definition: dbus-pending-call.c:729
dbus_pending_call_cancel
void dbus_pending_call_cancel(DBusPendingCall *pending)
Cancels the pending call, such that any reply or error received will just be ignored.
Definition: dbus-pending-call.c:690
dbus_pending_call_block
void dbus_pending_call_block(DBusPendingCall *pending)
Block until the pending call is completed.
Definition: dbus-pending-call.c:764
dbus_pending_call_get_completed
dbus_bool_t dbus_pending_call_get_completed(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
Definition: dbus-pending-call.c:706
DBusPendingCall::slot_list
DBusDataSlotList slot_list
Data stored by allocated integer ID.
Definition: dbus-pending-call.c:66
_dbus_pending_call_set_timeout_added_unlocked
void _dbus_pending_call_set_timeout_added_unlocked(DBusPendingCall *pending, dbus_bool_t is_added)
Sets wether the timeout has been added.
Definition: dbus-pending-call.c:290
_dbus_pending_call_set_reply_unlocked
void _dbus_pending_call_set_reply_unlocked(DBusPendingCall *pending, DBusMessage *message)
Sets the reply of a pending call with the given message, or if the message is NULL,...
Definition: dbus-pending-call.c:181
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition: dbus-memory.c:704
_dbus_timeout_unref
void _dbus_timeout_unref(DBusTimeout *timeout)
Decrements the reference count of a DBusTimeout object and finalizes the object if the count reaches ...
Definition: dbus-timeout.c:109
_dbus_pending_call_queue_timeout_error_unlocked
void _dbus_pending_call_queue_timeout_error_unlocked(DBusPendingCall *pending, DBusConnection *connection)
If the pending call hasn't been timed out, add its timeout error reply to the connection's incoming m...
Definition: dbus-pending-call.c:255
CONNECTION_UNLOCK
#define CONNECTION_UNLOCK(connection)
shorter and more visible way to write _dbus_connection_unlock()
Definition: dbus-pending-call.c:57
_DBUS_LOCK_NAME
#define _DBUS_LOCK_NAME(name)
Definition: dbus-internals.h:411
DBUS_ERROR_NO_REPLY
#define DBUS_ERROR_NO_REPLY
No reply to a message expecting one, usually means a timeout occurred.
Definition: dbus-protocol.h:367
DBusPendingCall::reply
DBusMessage * reply
Reply (after we've received it)
Definition: dbus-pending-call.c:71
_dbus_pending_call_set_data_unlocked
dbus_bool_t _dbus_pending_call_set_data_unlocked(DBusPendingCall *pending, dbus_int32_t slot, void *data, DBusFreeFunction free_data_func)
Stores a pointer on a DBusPendingCall, along with an optional function to be used for freeing the dat...
Definition: dbus-pending-call.c:529
DBusTimeout
Internals of DBusTimeout.
Definition: dbus-timeout.c:40
_dbus_data_slot_list_init
void _dbus_data_slot_list_init(DBusDataSlotList *list)
Initializes a slot list.
Definition: dbus-dataslot.c:198
_dbus_data_slot_allocator_alloc
dbus_bool_t _dbus_data_slot_allocator_alloc(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Allocates an integer ID to be used for storing data in a DBusDataSlotList.
Definition: dbus-dataslot.c:70
_dbus_pending_call_get_connection_and_lock
DBusConnection * _dbus_pending_call_get_connection_and_lock(DBusPendingCall *pending)
Gets the connection associated with this pending call.
Definition: dbus-pending-call.c:350
FALSE
#define FALSE
DBusPendingCall::connection
DBusConnection * connection
Connections we're associated with.
Definition: dbus-pending-call.c:70
_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:341
_dbus_pending_call_set_timeout_error_unlocked
dbus_bool_t _dbus_pending_call_set_timeout_error_unlocked(DBusPendingCall *pending, DBusMessage *message, dbus_uint32_t serial)
Sets the reply message associated with the pending call to a timeout error.
Definition: dbus-pending-call.c:381
DBusMessage
Internals of DBusMessage.
Definition: dbus-message-private.h:99
DBusList::data
void * data
Data stored at this element.
Definition: dbus-list.h:38
_dbus_list_free_link
void _dbus_list_free_link(DBusList *link)
Frees a linked list node allocated with _dbus_list_alloc_link.
Definition: dbus-list.c:255
DBUS_MESSAGE_TYPE_ERROR
#define DBUS_MESSAGE_TYPE_ERROR
Message type of an error reply message, see dbus_message_get_type()
Definition: dbus-protocol.h:238
DBUS_MESSAGE_TYPE_METHOD_RETURN
#define DBUS_MESSAGE_TYPE_METHOD_RETURN
Message type of a method return message, see dbus_message_get_type()
Definition: dbus-protocol.h:236
dbus_pending_call_ref
DBusPendingCall * dbus_pending_call_ref(DBusPendingCall *pending)
Increments the reference count on a pending call.
Definition: dbus-pending-call.c:604
dbus_message_get_reply_serial
dbus_uint32_t dbus_message_get_reply_serial(DBusMessage *message)
Returns the serial that the message is a reply to or 0 if none.
Definition: dbus-message.c:1196
DBusAtomic
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:326
_dbus_assert
#define _dbus_assert(condition)
Definition: dbus-internals.h:153
_dbus_connection_remove_pending_call
void _dbus_connection_remove_pending_call(DBusConnection *connection, DBusPendingCall *pending)
Removes a pending call from the connection, such that the pending reply will be ignored.
Definition: dbus-connection.c:1044
DBusPendingCall::timeout_link
DBusList * timeout_link
Preallocated timeout response.
Definition: dbus-pending-call.c:74
DBusDataSlotAllocator
An allocator that tracks a set of slot IDs.
Definition: dbus-dataslot.h:55
_dbus_pending_call_get_connection_unlocked
DBusConnection * _dbus_pending_call_get_connection_unlocked(DBusPendingCall *pending)
Gets the connection associated with this pending call.
Definition: dbus-pending-call.c:365
_dbus_pending_call_finish_completion
void _dbus_pending_call_finish_completion(DBusPendingCall *pending)
Call the notifier function for the pending call.
Definition: dbus-pending-call.c:233
_dbus_pending_call_start_completion_unlocked
void _dbus_pending_call_start_completion_unlocked(DBusPendingCall *pending)
Sets the pending call to completed.
Definition: dbus-pending-call.c:216
DBusList
Definition: dbus-list.h:34
_dbus_data_slot_allocator_free
void _dbus_data_slot_allocator_free(DBusDataSlotAllocator *allocator, dbus_int32_t *slot_id_p)
Deallocates an ID previously allocated with _dbus_data_slot_allocator_alloc().
Definition: dbus-dataslot.c:155
dbus_connection_unref
void dbus_connection_unref(DBusConnection *connection)
Decrements the reference count of a DBusConnection, and finalizes it if the count reaches zero.
Definition: dbus-connection.c:2816
DBusTimeoutHandler
dbus_bool_t(* DBusTimeoutHandler)(void *data)
function to run when the timeout is handled
Definition: dbus-timeout.h:41
_dbus_pending_call_get_completed_unlocked
dbus_bool_t _dbus_pending_call_get_completed_unlocked(DBusPendingCall *pending)
Checks whether the pending call has received a reply yet, or not.
Definition: dbus-pending-call.c:507
dbus_pending_call_allocate_data_slot
dbus_bool_t dbus_pending_call_allocate_data_slot(dbus_int32_t *slot_p)
Allocates an integer ID to be used for storing application-specific data on any DBusPendingCall.
Definition: dbus-pending-call.c:786
_dbus_pending_call_set_reply_serial_unlocked
void _dbus_pending_call_set_reply_serial_unlocked(DBusPendingCall *pending, dbus_uint32_t serial)
Sets the reply's serial number.
Definition: dbus-pending-call.c:334
_dbus_atomic_inc
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
Definition: dbus-sysdeps-unix.c:3015
DBusDataSlotList
Data structure that stores the actual user data set at a given slot.
Definition: dbus-dataslot.h:69
_dbus_pending_call_get_timeout_unlocked
DBusTimeout * _dbus_pending_call_get_timeout_unlocked(DBusPendingCall *pending)
Retrives the timeout.
Definition: dbus-pending-call.c:306
dbus_message_get_type
int dbus_message_get_type(DBusMessage *message)
Gets the type of a message.
Definition: dbus-message.c:1755
DBusPendingCall
Implementation details of DBusPendingCall - all fields are private.
Definition: dbus-pending-call.c:62
dbus_new0
#define dbus_new0(type, count)
Definition: dbus-memory.h:58
_dbus_connection_ref_unlocked
DBUS_PRIVATE_EXPORT DBusConnection * _dbus_connection_ref_unlocked(DBusConnection *connection)
Increments the reference count of a DBusConnection.
Definition: dbus-connection.c:1419
dbus_message_new_error
DBusMessage * dbus_message_new_error(DBusMessage *reply_to, const char *error_name, const char *error_message)
Creates a new message that is an error reply to another message.
Definition: dbus-message.c:1503
DBusPendingCall::timeout
DBusTimeout * timeout
Timeout.
Definition: dbus-pending-call.c:72
dbus_bool_t
dbus_uint32_t dbus_bool_t
Definition: dbus-types.h:35
NULL
#define NULL