1 /* -*- mode: C; c-file-style: "gnu" -*- */
2 /* dbus-internals.h random utility stuff (internal to D-Bus implementation)
4 * Copyright (C) 2002, 2003 Red Hat, Inc.
6 * Licensed under the Academic Free License version 2.1
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.
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.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #ifdef DBUS_INSIDE_DBUS_H
24 #error "You can't include dbus-internals.h in the public header dbus.h"
27 #ifndef DBUS_INTERNALS_H
28 #define DBUS_INTERNALS_H
32 #include <dbus/dbus-memory.h>
33 #include <dbus/dbus-types.h>
34 #include <dbus/dbus-errors.h>
35 #include <dbus/dbus-sysdeps.h>
36 #include <dbus/dbus-threads-internal.h>
40 #define DBUS_SESSION_BUS_DEFAULT_ADDRESS "autolaunch:"
42 void _dbus_warn (const char *format,
43 ...) _DBUS_GNUC_PRINTF (1, 2);
45 void _dbus_warn_check_failed (const char *format,
46 ...) _DBUS_GNUC_PRINTF (1, 2);
49 #if defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
50 #define _DBUS_FUNCTION_NAME __func__
51 #elif defined(__GNUC__) || defined(_MSC_VER)
52 #define _DBUS_FUNCTION_NAME __FUNCTION__
54 #define _DBUS_FUNCTION_NAME "unknown function"
60 * The _DBUS_LIKELY and _DBUS_UNLIKELY macros let the programmer give hints to
61 * the compiler about the expected result of an expression. Some compilers
62 * can use this information for optimizations.
64 * The _DBUS_BOOLEAN_EXPR macro is intended to trigger a gcc warning when
65 * putting assignments in the macro arg
67 #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
68 #define _DBUS_BOOLEAN_EXPR(expr) \
70 int _dbus_boolean_var_; \
72 _dbus_boolean_var_ = 1; \
74 _dbus_boolean_var_ = 0; \
77 #define _DBUS_LIKELY(expr) (__builtin_expect (_DBUS_BOOLEAN_EXPR(expr), 1))
78 #define _DBUS_UNLIKELY(expr) (__builtin_expect (_DBUS_BOOLEAN_EXPR(expr), 0))
80 #define _DBUS_LIKELY(expr) (expr)
81 #define _DBUS_UNLIKELY(expr) (expr)
84 #ifdef DBUS_ENABLE_VERBOSE_MODE
86 void _dbus_verbose_real (const char *format,
87 ...) _DBUS_GNUC_PRINTF (1, 2);
88 void _dbus_verbose_reset_real (void);
89 dbus_bool_t _dbus_is_verbose_real (void);
91 # define _dbus_verbose _dbus_verbose_real
92 # define _dbus_verbose_reset _dbus_verbose_reset_real
93 # define _dbus_is_verbose _dbus_is_verbose_real
95 # ifdef HAVE_ISO_VARARGS
96 # define _dbus_verbose(...)
97 # elif defined (HAVE_GNUC_VARARGS)
98 # define _dbus_verbose(format...)
100 # error "This compiler does not support varargs macros and thus verbose mode can't be disabled meaningfully"
102 # define _dbus_verbose_reset()
103 # define _dbus_is_verbose() FALSE
104 #endif /* !DBUS_ENABLE_VERBOSE_MODE */
106 const char* _dbus_strerror (int error_number);
108 #ifdef DBUS_DISABLE_ASSERT
109 #define _dbus_assert(condition)
111 void _dbus_real_assert (dbus_bool_t condition,
112 const char *condition_text,
116 #define _dbus_assert(condition) \
117 _dbus_real_assert ((condition) != 0, #condition, __FILE__, __LINE__, _DBUS_FUNCTION_NAME)
118 #endif /* !DBUS_DISABLE_ASSERT */
120 #ifdef DBUS_DISABLE_ASSERT
121 #define _dbus_assert_not_reached(explanation)
123 void _dbus_real_assert_not_reached (const char *explanation,
125 int line) _DBUS_GNUC_NORETURN;
126 #define _dbus_assert_not_reached(explanation) \
127 _dbus_real_assert_not_reached (explanation, __FILE__, __LINE__)
128 #endif /* !DBUS_DISABLE_ASSERT */
130 #ifdef DBUS_DISABLE_CHECKS
131 #define _dbus_return_if_fail(condition)
132 #define _dbus_return_val_if_fail(condition, val)
134 extern const char _dbus_return_if_fail_warning_format[];
136 #define _dbus_return_if_fail(condition) do { \
137 _dbus_assert ((*(const char*)_DBUS_FUNCTION_NAME) != '_'); \
138 if (!(condition)) { \
139 _dbus_warn_check_failed (_dbus_return_if_fail_warning_format, \
140 _DBUS_FUNCTION_NAME, #condition, __FILE__, __LINE__); \
144 #define _dbus_return_val_if_fail(condition, val) do { \
145 _dbus_assert ((*(const char*)_DBUS_FUNCTION_NAME) != '_'); \
146 if (!(condition)) { \
147 _dbus_warn_check_failed (_dbus_return_if_fail_warning_format, \
148 _DBUS_FUNCTION_NAME, #condition, __FILE__, __LINE__); \
152 #endif /* !DBUS_DISABLE_ASSERT */
154 #define _DBUS_N_ELEMENTS(array) ((int) (sizeof ((array)) / sizeof ((array)[0])))
156 #define _DBUS_POINTER_TO_INT(pointer) ((long)(pointer))
157 #define _DBUS_INT_TO_POINTER(integer) ((void*)((long)(integer)))
159 #define _DBUS_ZERO(object) (memset (&(object), '\0', sizeof ((object))))
161 #define _DBUS_STRUCT_OFFSET(struct_type, member) \
162 ((long) ((unsigned char*) &((struct_type*) 0)->member))
164 #ifdef DBUS_DISABLE_CHECKS
165 /* this is an assert and not an error, but in the typical --disable-checks case (you're trying
166 * to really minimize code size), disabling these assertions makes sense.
168 #define _DBUS_ASSERT_ERROR_IS_SET(error)
169 #define _DBUS_ASSERT_ERROR_IS_CLEAR(error)
171 #define _DBUS_ASSERT_ERROR_IS_SET(error) _dbus_assert ((error) == NULL || dbus_error_is_set ((error)))
172 #define _DBUS_ASSERT_ERROR_IS_CLEAR(error) _dbus_assert ((error) == NULL || !dbus_error_is_set ((error)))
175 #define _dbus_return_if_error_is_set(error) _dbus_return_if_fail ((error) == NULL || !dbus_error_is_set ((error)))
176 #define _dbus_return_val_if_error_is_set(error, val) _dbus_return_val_if_fail ((error) == NULL || !dbus_error_is_set ((error)), (val))
178 /* This alignment thing is from ORBit2 */
179 /* Align a value upward to a boundary, expressed as a number of bytes.
180 * E.g. align to an 8-byte boundary with argument of 8.
184 * (this + boundary - 1)
189 #define _DBUS_ALIGN_VALUE(this, boundary) \
190 (( ((unsigned long)(this)) + (((unsigned long)(boundary)) -1)) & (~(((unsigned long)(boundary))-1)))
192 #define _DBUS_ALIGN_ADDRESS(this, boundary) \
193 ((void*)_DBUS_ALIGN_VALUE(this, boundary))
196 char* _dbus_strdup (const char *str);
197 void* _dbus_memdup (const void *mem,
199 dbus_bool_t _dbus_string_array_contains (const char **array,
201 char** _dbus_dup_string_array (const char **array);
203 #define _DBUS_INT16_MIN ((dbus_int16_t) 0x8000)
204 #define _DBUS_INT16_MAX ((dbus_int16_t) 0x7fff)
205 #define _DBUS_UINT16_MAX ((dbus_uint16_t)0xffff)
206 #define _DBUS_INT32_MIN ((dbus_int32_t) 0x80000000)
207 #define _DBUS_INT32_MAX ((dbus_int32_t) 0x7fffffff)
208 #define _DBUS_UINT32_MAX ((dbus_uint32_t)0xffffffff)
209 /* using 32-bit here is sort of bogus */
210 #define _DBUS_INT_MIN _DBUS_INT32_MIN
211 #define _DBUS_INT_MAX _DBUS_INT32_MAX
212 #define _DBUS_UINT_MAX _DBUS_UINT32_MAX
213 #ifdef DBUS_HAVE_INT64
214 #define _DBUS_INT64_MAX DBUS_INT64_CONSTANT (0x7fffffffffffffff)
215 #define _DBUS_UINT64_MAX DBUS_UINT64_CONSTANT (0xffffffffffffffff)
217 #define _DBUS_ONE_KILOBYTE 1024
218 #define _DBUS_ONE_MEGABYTE 1024 * _DBUS_ONE_KILOBYTE
219 #define _DBUS_ONE_HOUR_IN_MILLISECONDS (1000 * 60 * 60)
220 #define _DBUS_USEC_PER_SECOND (1000000)
223 #define MAX(a, b) (((a) > (b)) ? (a) : (b))
226 #define MIN(a, b) (((a) < (b)) ? (a) : (b))
229 #define ABS(a) (((a) < 0) ? -(a) : (a))
231 #define _DBUS_ISASCII(c) ((c) != '\0' && (((c) & ~0x7f) == 0))
233 typedef void (* DBusForeachFunction) (void *element,
236 dbus_bool_t _dbus_set_fd_nonblocking (int fd,
239 void _dbus_verbose_bytes (const unsigned char *data,
242 void _dbus_verbose_bytes_of_string (const DBusString *str,
246 const char* _dbus_header_field_to_string (int header_field);
248 extern const char _dbus_no_memory_message[];
249 #define _DBUS_SET_OOM(error) dbus_set_error_const ((error), DBUS_ERROR_NO_MEMORY, _dbus_no_memory_message)
251 #ifdef DBUS_BUILD_TESTS
252 /* Memory debugging */
253 void _dbus_set_fail_alloc_counter (int until_next_fail);
254 int _dbus_get_fail_alloc_counter (void);
255 void _dbus_set_fail_alloc_failures (int failures_per_failure);
256 int _dbus_get_fail_alloc_failures (void);
257 dbus_bool_t _dbus_decrement_fail_alloc_counter (void);
258 dbus_bool_t _dbus_disable_mem_pools (void);
259 int _dbus_get_malloc_blocks_outstanding (void);
261 typedef dbus_bool_t (* DBusTestMemoryFunction) (void *data);
262 dbus_bool_t _dbus_test_oom_handling (const char *description,
263 DBusTestMemoryFunction func,
266 #define _dbus_set_fail_alloc_counter(n)
267 #define _dbus_get_fail_alloc_counter _DBUS_INT_MAX
269 /* These are constant expressions so that blocks
270 * they protect should be optimized away
272 #define _dbus_decrement_fail_alloc_counter() (FALSE)
273 #define _dbus_disable_mem_pools() (FALSE)
274 #define _dbus_get_malloc_blocks_outstanding (0)
275 #endif /* !DBUS_BUILD_TESTS */
277 typedef void (* DBusShutdownFunction) (void *data);
278 dbus_bool_t _dbus_register_shutdown_func (DBusShutdownFunction function,
281 extern int _dbus_current_generation;
283 /* Thread initializers */
284 #define _DBUS_LOCK_NAME(name) _dbus_lock_##name
285 #define _DBUS_DECLARE_GLOBAL_LOCK(name) extern DBusMutex *_dbus_lock_##name
286 #define _DBUS_DEFINE_GLOBAL_LOCK(name) DBusMutex *_dbus_lock_##name
287 #define _DBUS_LOCK(name) _dbus_mutex_lock (_dbus_lock_##name)
288 #define _DBUS_UNLOCK(name) _dbus_mutex_unlock (_dbus_lock_##name)
291 _DBUS_DECLARE_GLOBAL_LOCK (list);
292 _DBUS_DECLARE_GLOBAL_LOCK (connection_slots);
293 _DBUS_DECLARE_GLOBAL_LOCK (pending_call_slots);
294 _DBUS_DECLARE_GLOBAL_LOCK (server_slots);
295 _DBUS_DECLARE_GLOBAL_LOCK (message_slots);
297 _DBUS_DECLARE_GLOBAL_LOCK (atomic);
298 _DBUS_DECLARE_GLOBAL_LOCK (bus);
299 _DBUS_DECLARE_GLOBAL_LOCK (bus_datas);
300 _DBUS_DECLARE_GLOBAL_LOCK (shutdown_funcs);
301 _DBUS_DECLARE_GLOBAL_LOCK (system_users);
303 _DBUS_DECLARE_GLOBAL_LOCK (message_cache);
304 _DBUS_DECLARE_GLOBAL_LOCK (shared_connections);
305 _DBUS_DECLARE_GLOBAL_LOCK (win_fds);
306 _DBUS_DECLARE_GLOBAL_LOCK (sid_atom_cache);
307 _DBUS_DECLARE_GLOBAL_LOCK (machine_uuid);
308 #define _DBUS_N_GLOBAL_LOCKS (15)
310 dbus_bool_t _dbus_threads_init_debug (void);
312 dbus_bool_t _dbus_address_append_escaped (DBusString *escaped,
313 const DBusString *unescaped);
315 void _dbus_set_bad_address (DBusError *error,
316 const char *address_problem_type,
317 const char *address_problem_field,
318 const char *address_problem_other);
320 #define DBUS_UUID_LENGTH_BYTES 16
321 #define DBUS_UUID_LENGTH_WORDS (DBUS_UUID_LENGTH_BYTES / 4)
322 #define DBUS_UUID_LENGTH_HEX (DBUS_UUID_LENGTH_BYTES * 2)
325 * A globally unique ID ; we have one for each DBusServer, and also one for each
326 * machine with libdbus installed on it.
330 dbus_uint32_t as_uint32s[DBUS_UUID_LENGTH_WORDS]; /**< guid as four uint32 values */
331 char as_bytes[DBUS_UUID_LENGTH_BYTES]; /**< guid as 16 single-byte values */
334 void _dbus_generate_uuid (DBusGUID *uuid);
335 dbus_bool_t _dbus_uuid_encode (const DBusGUID *uuid,
336 DBusString *encoded);
337 dbus_bool_t _dbus_read_uuid_file (const DBusString *filename,
339 dbus_bool_t create_if_not_found,
342 dbus_bool_t _dbus_get_local_machine_uuid_encoded (DBusString *uuid_str);
346 #endif /* DBUS_INTERNALS_H */