D-Bus  1.13.16
dbus-memory.c
1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-memory.c D-Bus memory handling
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-memory.h"
26 #include "dbus-internals.h"
27 #include "dbus-sysdeps.h"
28 #include "dbus-list.h"
29 #include "dbus-threads.h"
30 #include <dbus/dbus-test-tap.h>
31 #include <stdlib.h>
32  /* end of public API docs */
94 
101 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
102 /* Test-only, does not need to be thread-safe */
103 static dbus_bool_t debug_initialized = FALSE;
104 static int fail_nth = -1;
105 static size_t fail_size = 0;
106 static int fail_alloc_counter = _DBUS_INT_MAX;
107 static int n_failures_per_failure = 1;
108 static int n_failures_this_failure = 0;
109 static dbus_bool_t guards = FALSE;
110 static dbus_bool_t disable_mem_pools = FALSE;
111 static dbus_bool_t backtrace_on_fail_alloc = FALSE;
112 static dbus_bool_t malloc_cannot_fail = FALSE;
113 static DBusAtomic n_blocks_outstanding = {0};
114 
116 #define GUARD_VALUE 0xdeadbeef
117 
118 #define GUARD_INFO_SIZE 8
119 
120 #define GUARD_START_PAD 16
121 
122 #define GUARD_END_PAD 16
123 
124 #define GUARD_START_OFFSET (GUARD_START_PAD + GUARD_INFO_SIZE)
125 
126 #define GUARD_EXTRA_SIZE (GUARD_START_OFFSET + GUARD_END_PAD)
127 
128 static void
129 _dbus_initialize_malloc_debug (void)
130 {
131  if (!debug_initialized)
132  {
133  debug_initialized = TRUE;
134 
135  if (_dbus_getenv ("DBUS_MALLOC_FAIL_NTH") != NULL)
136  {
137  fail_nth = atoi (_dbus_getenv ("DBUS_MALLOC_FAIL_NTH"));
138  fail_alloc_counter = fail_nth;
139  _dbus_verbose ("Will fail dbus_malloc every %d times\n", fail_nth);
140  }
141 
142  if (_dbus_getenv ("DBUS_MALLOC_FAIL_GREATER_THAN") != NULL)
143  {
144  fail_size = atoi (_dbus_getenv ("DBUS_MALLOC_FAIL_GREATER_THAN"));
145  _dbus_verbose ("Will fail mallocs over %ld bytes\n",
146  (long) fail_size);
147  }
148 
149  if (_dbus_getenv ("DBUS_MALLOC_GUARDS") != NULL)
150  {
151  guards = TRUE;
152  _dbus_verbose ("Will use dbus_malloc guards\n");
153  }
154 
155  if (_dbus_getenv ("DBUS_DISABLE_MEM_POOLS") != NULL)
156  {
157  disable_mem_pools = TRUE;
158  _dbus_verbose ("Will disable memory pools\n");
159  }
160 
161  if (_dbus_getenv ("DBUS_MALLOC_BACKTRACES") != NULL)
162  {
163  backtrace_on_fail_alloc = TRUE;
164  _dbus_verbose ("Will backtrace on failing a dbus_malloc\n");
165  }
166 
167  if (_dbus_getenv ("DBUS_MALLOC_CANNOT_FAIL") != NULL)
168  {
169  malloc_cannot_fail = TRUE;
170  _dbus_verbose ("Will abort if system malloc() and friends fail\n");
171  }
172  }
173 }
174 
181 _dbus_disable_mem_pools (void)
182 {
183  _dbus_initialize_malloc_debug ();
184  return disable_mem_pools;
185 }
186 
195 void
196 _dbus_set_fail_alloc_counter (int until_next_fail)
197 {
198  _dbus_initialize_malloc_debug ();
199 
200  fail_alloc_counter = until_next_fail;
201 
202 #if 0
203  _dbus_verbose ("Set fail alloc counter = %d\n", fail_alloc_counter);
204 #endif
205 }
206 
213 int
214 _dbus_get_fail_alloc_counter (void)
215 {
216  _dbus_initialize_malloc_debug ();
217 
218  return fail_alloc_counter;
219 }
220 
227 void
228 _dbus_set_fail_alloc_failures (int failures_per_failure)
229 {
230  n_failures_per_failure = failures_per_failure;
231 }
232 
239 int
240 _dbus_get_fail_alloc_failures (void)
241 {
242  return n_failures_per_failure;
243 }
244 
245 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
246 
255 _dbus_decrement_fail_alloc_counter (void)
256 {
257  _dbus_initialize_malloc_debug ();
258 #ifdef DBUS_WIN
259  {
260  static dbus_bool_t called = 0;
261 
262  if (!called)
263  {
264  _dbus_verbose_raw ("TODO: memory allocation testing errors disabled for now\n");
265  called = 1;
266  }
267  return FALSE;
268  }
269 #endif
270 
271  if (fail_alloc_counter <= 0)
272  {
273  if (backtrace_on_fail_alloc)
275 
276  _dbus_verbose ("failure %d\n", n_failures_this_failure);
277 
278  n_failures_this_failure += 1;
279  if (n_failures_this_failure >= n_failures_per_failure)
280  {
281  if (fail_nth >= 0)
282  fail_alloc_counter = fail_nth;
283  else
284  fail_alloc_counter = _DBUS_INT_MAX;
285 
286  n_failures_this_failure = 0;
287 
288  _dbus_verbose ("reset fail alloc counter to %d\n", fail_alloc_counter);
289  }
290 
291  return TRUE;
292  }
293  else
294  {
295  fail_alloc_counter -= 1;
296  return FALSE;
297  }
298 }
299 #endif /* DBUS_ENABLE_EMBEDDED_TESTS */
300 
306 int
307 _dbus_get_malloc_blocks_outstanding (void)
308 {
309  return _dbus_atomic_get (&n_blocks_outstanding);
310 }
311 
315 typedef enum
316 {
317  SOURCE_UNKNOWN,
318  SOURCE_MALLOC,
319  SOURCE_REALLOC,
320  SOURCE_MALLOC_ZERO,
321  SOURCE_REALLOC_NULL
322 } BlockSource;
323 
324 static const char*
325 source_string (BlockSource source)
326 {
327  switch (source)
328  {
329  case SOURCE_UNKNOWN:
330  return "unknown";
331  case SOURCE_MALLOC:
332  return "malloc";
333  case SOURCE_REALLOC:
334  return "realloc";
335  case SOURCE_MALLOC_ZERO:
336  return "malloc0";
337  case SOURCE_REALLOC_NULL:
338  return "realloc(NULL)";
339  default:
340  _dbus_assert_not_reached ("Invalid malloc block source ID");
341  return "invalid!";
342  }
343 }
344 
345 static void
346 check_guards (void *free_block,
347  dbus_bool_t overwrite)
348 {
349  if (free_block != NULL)
350  {
351  unsigned char *block = ((unsigned char*)free_block) - GUARD_START_OFFSET;
352  size_t requested_bytes = *(dbus_uint32_t*)block;
353  BlockSource source = *(dbus_uint32_t*)(block + 4);
354  unsigned int i;
355  dbus_bool_t failed;
356 
357  failed = FALSE;
358 
359 #if 0
360  _dbus_verbose ("Checking %d bytes request from source %s\n",
361  requested_bytes, source_string (source));
362 #endif
363 
364  i = GUARD_INFO_SIZE;
365  while (i < GUARD_START_OFFSET)
366  {
367  dbus_uint32_t value = *(dbus_uint32_t*) &block[i];
368  if (value != GUARD_VALUE)
369  {
370  _dbus_warn ("Block of %lu bytes from %s had start guard value 0x%ux at %d expected 0x%x",
371  (long) requested_bytes, source_string (source),
372  value, i, GUARD_VALUE);
373  failed = TRUE;
374  }
375 
376  i += 4;
377  }
378 
379  i = GUARD_START_OFFSET + requested_bytes;
380  while (i < (GUARD_START_OFFSET + requested_bytes + GUARD_END_PAD))
381  {
382  dbus_uint32_t value = *(dbus_uint32_t*) &block[i];
383  if (value != GUARD_VALUE)
384  {
385  _dbus_warn ("Block of %lu bytes from %s had end guard value 0x%ux at %d expected 0x%x",
386  (long) requested_bytes, source_string (source),
387  value, i, GUARD_VALUE);
388  failed = TRUE;
389  }
390 
391  i += 4;
392  }
393 
394  /* set memory to anything but nul bytes */
395  if (overwrite)
396  memset (free_block, 'g', requested_bytes);
397 
398  if (failed)
399  _dbus_assert_not_reached ("guard value corruption");
400  }
401 }
402 
403 static void*
404 set_guards (void *real_block,
405  size_t requested_bytes,
406  BlockSource source)
407 {
408  unsigned char *block = real_block;
409  unsigned int i;
410 
411  if (block == NULL)
412  return NULL;
413 
414  _dbus_assert (GUARD_START_OFFSET + GUARD_END_PAD == GUARD_EXTRA_SIZE);
415 
416  *((dbus_uint32_t*)block) = requested_bytes;
417  *((dbus_uint32_t*)(block + 4)) = source;
418 
419  i = GUARD_INFO_SIZE;
420  while (i < GUARD_START_OFFSET)
421  {
422  (*(dbus_uint32_t*) &block[i]) = GUARD_VALUE;
423 
424  i += 4;
425  }
426 
427  i = GUARD_START_OFFSET + requested_bytes;
428  while (i < (GUARD_START_OFFSET + requested_bytes + GUARD_END_PAD))
429  {
430  (*(dbus_uint32_t*) &block[i]) = GUARD_VALUE;
431 
432  i += 4;
433  }
434 
435  check_guards (block + GUARD_START_OFFSET, FALSE);
436 
437  return block + GUARD_START_OFFSET;
438 }
439 
440 #endif
441  /* End of internals docs */
443 
444 
463 void*
464 dbus_malloc (size_t bytes)
465 {
466 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
467  _dbus_initialize_malloc_debug ();
468 
469  if (_dbus_decrement_fail_alloc_counter ())
470  {
471  _dbus_verbose (" FAILING malloc of %ld bytes\n", (long) bytes);
472  return NULL;
473  }
474 #endif
475 
476  if (bytes == 0) /* some system mallocs handle this, some don't */
477  return NULL;
478 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
479  else if (fail_size != 0 && bytes > fail_size)
480  return NULL;
481  else if (guards)
482  {
483  void *block;
484 
485  block = malloc (bytes + GUARD_EXTRA_SIZE);
486  if (block)
487  {
488  _dbus_atomic_inc (&n_blocks_outstanding);
489  }
490  else if (malloc_cannot_fail)
491  {
492  _dbus_warn ("out of memory: malloc (%ld + %ld)",
493  (long) bytes, (long) GUARD_EXTRA_SIZE);
494  _dbus_abort ();
495  }
496 
497  return set_guards (block, bytes, SOURCE_MALLOC);
498  }
499 #endif
500  else
501  {
502  void *mem;
503  mem = malloc (bytes);
504 
505 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
506  if (mem)
507  {
508  _dbus_atomic_inc (&n_blocks_outstanding);
509  }
510  else if (malloc_cannot_fail)
511  {
512  _dbus_warn ("out of memory: malloc (%ld)", (long) bytes);
513  _dbus_abort ();
514  }
515 #endif
516 
517  return mem;
518  }
519 }
520 
533 void*
534 dbus_malloc0 (size_t bytes)
535 {
536 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
537  _dbus_initialize_malloc_debug ();
538 
539  if (_dbus_decrement_fail_alloc_counter ())
540  {
541  _dbus_verbose (" FAILING malloc0 of %ld bytes\n", (long) bytes);
542 
543  return NULL;
544  }
545 #endif
546 
547  if (bytes == 0)
548  return NULL;
549 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
550  else if (fail_size != 0 && bytes > fail_size)
551  return NULL;
552  else if (guards)
553  {
554  void *block;
555 
556  block = calloc (bytes + GUARD_EXTRA_SIZE, 1);
557 
558  if (block)
559  {
560  _dbus_atomic_inc (&n_blocks_outstanding);
561  }
562  else if (malloc_cannot_fail)
563  {
564  _dbus_warn ("out of memory: calloc (%ld + %ld, 1)",
565  (long) bytes, (long) GUARD_EXTRA_SIZE);
566  _dbus_abort ();
567  }
568 
569  return set_guards (block, bytes, SOURCE_MALLOC_ZERO);
570  }
571 #endif
572  else
573  {
574  void *mem;
575  mem = calloc (bytes, 1);
576 
577 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
578  if (mem)
579  {
580  _dbus_atomic_inc (&n_blocks_outstanding);
581  }
582  else if (malloc_cannot_fail)
583  {
584  _dbus_warn ("out of memory: calloc (%ld)", (long) bytes);
585  _dbus_abort ();
586  }
587 #endif
588 
589  return mem;
590  }
591 }
592 
603 void*
604 dbus_realloc (void *memory,
605  size_t bytes)
606 {
607 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
608  _dbus_initialize_malloc_debug ();
609 
610  if (_dbus_decrement_fail_alloc_counter ())
611  {
612  _dbus_verbose (" FAILING realloc of %ld bytes\n", (long) bytes);
613 
614  return NULL;
615  }
616 #endif
617 
618  if (bytes == 0) /* guarantee this is safe */
619  {
620  dbus_free (memory);
621  return NULL;
622  }
623 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
624  else if (fail_size != 0 && bytes > fail_size)
625  return NULL;
626  else if (guards)
627  {
628  if (memory)
629  {
630  size_t old_bytes;
631  void *block;
632 
633  check_guards (memory, FALSE);
634 
635  block = realloc (((unsigned char*)memory) - GUARD_START_OFFSET,
636  bytes + GUARD_EXTRA_SIZE);
637 
638  if (block == NULL)
639  {
640  if (malloc_cannot_fail)
641  {
642  _dbus_warn ("out of memory: realloc (%p, %ld + %ld)",
643  memory, (long) bytes, (long) GUARD_EXTRA_SIZE);
644  _dbus_abort ();
645  }
646 
647  return NULL;
648  }
649 
650  old_bytes = *(dbus_uint32_t*)block;
651  if (bytes >= old_bytes)
652  /* old guards shouldn't have moved */
653  check_guards (((unsigned char*)block) + GUARD_START_OFFSET, FALSE);
654 
655  return set_guards (block, bytes, SOURCE_REALLOC);
656  }
657  else
658  {
659  void *block;
660 
661  block = malloc (bytes + GUARD_EXTRA_SIZE);
662 
663  if (block)
664  {
665  _dbus_atomic_inc (&n_blocks_outstanding);
666  }
667  else if (malloc_cannot_fail)
668  {
669  _dbus_warn ("out of memory: malloc (%ld + %ld)",
670  (long) bytes, (long) GUARD_EXTRA_SIZE);
671  _dbus_abort ();
672  }
673 
674  return set_guards (block, bytes, SOURCE_REALLOC_NULL);
675  }
676  }
677 #endif
678  else
679  {
680  void *mem;
681  mem = realloc (memory, bytes);
682 
683 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
684  if (mem == NULL && malloc_cannot_fail)
685  {
686  _dbus_warn ("out of memory: malloc (%ld)", (long) bytes);
687  _dbus_abort ();
688  }
689 
690  if (memory == NULL && mem != NULL)
691  _dbus_atomic_inc (&n_blocks_outstanding);
692 #endif
693  return mem;
694  }
695 }
696 
703 void
704 dbus_free (void *memory)
705 {
706 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
707  if (guards)
708  {
709  check_guards (memory, TRUE);
710  if (memory)
711  {
712 #ifdef DBUS_DISABLE_ASSERT
713  _dbus_atomic_dec (&n_blocks_outstanding);
714 #else
715  dbus_int32_t old_value;
716 
717  old_value = _dbus_atomic_dec (&n_blocks_outstanding);
718  _dbus_assert (old_value >= 1);
719 #endif
720 
721  free (((unsigned char*)memory) - GUARD_START_OFFSET);
722  }
723 
724  return;
725  }
726 #endif
727 
728  if (memory) /* we guarantee it's safe to free (NULL) */
729  {
730 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
731 #ifdef DBUS_DISABLE_ASSERT
732  _dbus_atomic_dec (&n_blocks_outstanding);
733 #else
734  dbus_int32_t old_value;
735 
736  old_value = _dbus_atomic_dec (&n_blocks_outstanding);
737  _dbus_assert (old_value >= 1);
738 #endif
739 #endif
740 
741  free (memory);
742  }
743 }
744 
751 void
752 dbus_free_string_array (char **str_array)
753 {
754  if (str_array)
755  {
756  int i;
757 
758  i = 0;
759  while (str_array[i])
760  {
761  dbus_free (str_array[i]);
762  i++;
763  }
764 
765  dbus_free (str_array);
766  }
767 }
768  /* End of public API docs block */
770 
771 
785 
790 
795 {
797  DBusShutdownFunction func;
798  void *data;
799 };
800 
801 /* Protected by _DBUS_LOCK (shutdown_funcs) */
802 static ShutdownClosure *registered_globals = NULL;
803 
813 _dbus_register_shutdown_func (DBusShutdownFunction func,
814  void *data)
815 {
816  dbus_bool_t ok;
817 
818  if (!_DBUS_LOCK (shutdown_funcs))
819  return FALSE;
820 
821  ok = _dbus_register_shutdown_func_unlocked (func, data);
822  _DBUS_UNLOCK (shutdown_funcs);
823  return ok;
824 }
825 
827 _dbus_register_shutdown_func_unlocked (DBusShutdownFunction func,
828  void *data)
829 {
830  ShutdownClosure *c;
831 
832  c = dbus_new (ShutdownClosure, 1);
833 
834  if (c == NULL)
835  return FALSE;
836 
837  c->func = func;
838  c->data = data;
839 
840  c->next = registered_globals;
841  registered_globals = c;
842 
843  return TRUE;
844 }
845  /* End of private API docs block */
847 
848 
899 void
901 {
902  while (registered_globals != NULL)
903  {
904  ShutdownClosure *c;
905 
906  c = registered_globals;
907  registered_globals = c->next;
908 
909  (* c->func) (c->data);
910 
911  dbus_free (c);
912  }
913 
914  /* We wrap this in the thread-initialization lock because
915  * dbus_threads_init() uses the current generation to tell whether
916  * we're initialized, so we need to make sure that un-initializing
917  * propagates into all threads. */
921 }
922 
925 #ifdef DBUS_ENABLE_EMBEDDED_TESTS
926 #include "dbus-test.h"
927 
934 _dbus_memory_test (const char *test_data_dir _DBUS_GNUC_UNUSED)
935 {
936  dbus_bool_t old_guards;
937  void *p;
938  size_t size;
939 
940  old_guards = guards;
941  guards = TRUE;
942  p = dbus_malloc (4);
943  if (p == NULL)
944  _dbus_test_fatal ("no memory");
945  for (size = 4; size < 256; size += 4)
946  {
947  p = dbus_realloc (p, size);
948  if (p == NULL)
949  _dbus_test_fatal ("no memory");
950  }
951  for (size = 256; size != 0; size -= 4)
952  {
953  p = dbus_realloc (p, size);
954  if (p == NULL)
955  _dbus_test_fatal ("no memory");
956  }
957  dbus_free (p);
958  guards = old_guards;
959  return TRUE;
960 }
961 
962 #endif
_dbus_atomic_dec
dbus_int32_t _dbus_atomic_dec(DBusAtomic *atomic)
Atomically decrement an integer.
Definition: dbus-sysdeps-unix.c:3038
dbus_realloc
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition: dbus-memory.c:604
_dbus_threads_lock_platform_specific
void _dbus_threads_lock_platform_specific(void)
Lock a static mutex used to protect _dbus_threads_init_platform_specific().
Definition: dbus-sysdeps-pthread.c:294
_dbus_current_generation
int _dbus_current_generation
_dbus_current_generation is used to track each time that dbus_shutdown() is called,...
Definition: dbus-memory.c:784
_DBUS_INT_MAX
#define _DBUS_INT_MAX
Definition: dbus-internals.h:302
ShutdownClosure::func
DBusShutdownFunction func
Function to call.
Definition: dbus-memory.c:797
_dbus_atomic_get
dbus_int32_t _dbus_atomic_get(DBusAtomic *atomic)
Atomically get the value of an integer.
Definition: dbus-sysdeps-unix.c:3062
_DBUS_LOCK
#define _DBUS_LOCK(name)
Definition: dbus-internals.h:412
TRUE
#define TRUE
dbus_malloc0
void * dbus_malloc0(size_t bytes)
Allocates the given number of bytes, as with standard malloc(), but all bytes are initialized to zero...
Definition: dbus-memory.c:534
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_malloc
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
Definition: dbus-memory.c:464
_dbus_register_shutdown_func
dbus_bool_t _dbus_register_shutdown_func(DBusShutdownFunction func, void *data)
Register a cleanup function to be called exactly once the next time dbus_shutdown() is called.
Definition: dbus-memory.c:813
ShutdownClosure
This struct represents a function to be called on shutdown.
Definition: dbus-memory.c:794
FALSE
#define FALSE
_dbus_abort
void _dbus_abort(void)
Aborts the program with SIGABRT (dumping core).
Definition: dbus-sysdeps.c:87
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Definition: dbus-internals.h:164
_dbus_threads_unlock_platform_specific
void _dbus_threads_unlock_platform_specific(void)
Undo _dbus_threads_lock_platform_specific().
Definition: dbus-sysdeps-pthread.c:300
DBusAtomic
An atomic integer safe to increment or decrement from multiple threads.
Definition: dbus-sysdeps.h:326
dbus_new
#define dbus_new(type, count)
Definition: dbus-memory.h:57
_dbus_assert
#define _dbus_assert(condition)
Definition: dbus-internals.h:153
_dbus_warn
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
Definition: dbus-internals.c:238
_dbus_getenv
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
Definition: dbus-sysdeps.c:195
_dbus_print_backtrace
void _dbus_print_backtrace(void)
On GNU libc systems, print a crude backtrace to stderr.
Definition: dbus-sysdeps-unix.c:3662
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition: dbus-memory.c:752
ShutdownClosure::data
void * data
Data for function.
Definition: dbus-memory.c:798
_dbus_atomic_inc
dbus_int32_t _dbus_atomic_inc(DBusAtomic *atomic)
Atomically increments an integer.
Definition: dbus-sysdeps-unix.c:3015
_DBUS_UNLOCK
#define _DBUS_UNLOCK(name)
Definition: dbus-internals.h:413
dbus_shutdown
void dbus_shutdown(void)
Frees all memory allocated internally by libdbus and reverses the effects of dbus_threads_init().
Definition: dbus-memory.c:900
ShutdownClosure::next
ShutdownClosure * next
Next ShutdownClosure.
Definition: dbus-memory.c:796
dbus_bool_t
dbus_uint32_t dbus_bool_t
Definition: dbus-types.h:35
NULL
#define NULL