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[babeltrace.git] / src / logging / log.c
1 /*
2 * SPDX-License-Identifier: MIT
3 *
4 * Copyright (c) 2016 wonder-mice
5 *
6 * This is zf_log.c, modified with Babeltrace prefixes.
7 * See <https://github.com/wonder-mice/zf_log/>.
8 */
9
10 #include "common/macros.h"
11 #include "common/common.h"
12 #include <pthread.h>
13 #include "common/assert.h"
14
15 #ifdef __CYGWIN__
16 extern unsigned long pthread_getsequence_np(pthread_t *);
17 #endif
18
19 /* When defined, Android log (android/log.h) will be used by default instead of
20 * stderr (ignored on non-Android platforms). Date, time, pid and tid (context)
21 * will be provided by Android log. Android log features will be used to output
22 * log level and tag.
23 */
24 #ifdef BT_LOG_USE_ANDROID_LOG
25 #undef BT_LOG_USE_ANDROID_LOG
26 #if defined(__ANDROID__)
27 #define BT_LOG_USE_ANDROID_LOG 1
28 #else
29 #define BT_LOG_USE_ANDROID_LOG 0
30 #endif
31 #else
32 #define BT_LOG_USE_ANDROID_LOG 0
33 #endif
34 /* When defined, NSLog (uses Apple System Log) will be used instead of stderr
35 * (ignored on non-Apple platforms). Date, time, pid and tid (context) will be
36 * provided by NSLog. Curiously, doesn't use NSLog() directly, but piggybacks on
37 * non-public CFLog() function. Both use Apple System Log internally, but it's
38 * easier to call CFLog() from C than NSLog(). Current implementation doesn't
39 * support "%@" format specifier.
40 */
41 #ifdef BT_LOG_USE_NSLOG
42 #undef BT_LOG_USE_NSLOG
43 #if defined(__APPLE__) && defined(__MACH__)
44 #define BT_LOG_USE_NSLOG 1
45 #else
46 #define BT_LOG_USE_NSLOG 0
47 #endif
48 #else
49 #define BT_LOG_USE_NSLOG 0
50 #endif
51 /* When defined, OutputDebugString() will be used instead of stderr (ignored on
52 * non-Windows platforms). Uses OutputDebugStringA() variant and feeds it with
53 * UTF-8 data.
54 */
55 #ifdef BT_LOG_USE_DEBUGSTRING
56 #undef BT_LOG_USE_DEBUGSTRING
57 #if defined(_WIN32) || defined(_WIN64)
58 #define BT_LOG_USE_DEBUGSTRING 1
59 #else
60 #define BT_LOG_USE_DEBUGSTRING 0
61 #endif
62 #else
63 #define BT_LOG_USE_DEBUGSTRING 0
64 #endif
65 /* When defined, bt_log library will not contain definition of tag prefix
66 * variable. In that case it must be defined elsewhere using
67 * BT_LOG_DEFINE_TAG_PREFIX macro, for example:
68 *
69 * BT_LOG_DEFINE_TAG_PREFIX = "ProcessName";
70 *
71 * This allows to specify custom value for static initialization and avoid
72 * overhead of setting this value in runtime.
73 */
74 #ifdef BT_LOG_EXTERN_TAG_PREFIX
75 #undef BT_LOG_EXTERN_TAG_PREFIX
76 #define BT_LOG_EXTERN_TAG_PREFIX 1
77 #else
78 #define BT_LOG_EXTERN_TAG_PREFIX 0
79 #endif
80 /* When defined, bt_log library will not contain definition of global format
81 * variable. In that case it must be defined elsewhere using
82 * BT_LOG_DEFINE_GLOBAL_FORMAT macro, for example:
83 *
84 * BT_LOG_DEFINE_GLOBAL_FORMAT = {MEM_WIDTH};
85 *
86 * This allows to specify custom value for static initialization and avoid
87 * overhead of setting this value in runtime.
88 */
89 #ifdef BT_LOG_EXTERN_GLOBAL_FORMAT
90 #undef BT_LOG_EXTERN_GLOBAL_FORMAT
91 #define BT_LOG_EXTERN_GLOBAL_FORMAT 1
92 #else
93 #define BT_LOG_EXTERN_GLOBAL_FORMAT 0
94 #endif
95 /* When defined, bt_log library will not contain definition of global output
96 * variable. In that case it must be defined elsewhere using
97 * BT_LOG_DEFINE_GLOBAL_OUTPUT macro, for example:
98 *
99 * BT_LOG_DEFINE_GLOBAL_OUTPUT = {BT_LOG_PUT_STD, custom_output_callback};
100 *
101 * This allows to specify custom value for static initialization and avoid
102 * overhead of setting this value in runtime.
103 */
104 #ifdef BT_LOG_EXTERN_GLOBAL_OUTPUT
105 #undef BT_LOG_EXTERN_GLOBAL_OUTPUT
106 #define BT_LOG_EXTERN_GLOBAL_OUTPUT 1
107 #else
108 #define BT_LOG_EXTERN_GLOBAL_OUTPUT 0
109 #endif
110 /* When defined, bt_log library will not contain definition of global output
111 * level variable. In that case it must be defined elsewhere using
112 * BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL macro, for example:
113 *
114 * BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL = BT_LOG_WARNING;
115 *
116 * This allows to specify custom value for static initialization and avoid
117 * overhead of setting this value in runtime.
118 */
119 #ifdef BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
120 #undef BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
121 #define BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL 1
122 #else
123 #define BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL 0
124 #endif
125 /* When defined, implementation will prefer smaller code size over speed.
126 * Very rough estimate is that code will be up to 2x smaller and up to 2x
127 * slower. Disabled by default.
128 */
129 #ifdef BT_LOG_OPTIMIZE_SIZE
130 #undef BT_LOG_OPTIMIZE_SIZE
131 #define BT_LOG_OPTIMIZE_SIZE 1
132 #else
133 #define BT_LOG_OPTIMIZE_SIZE 0
134 #endif
135 /* Size of the log line buffer. The buffer is a globally allocated per thread.
136 */
137 #ifndef BT_LOG_BUF_SZ
138 #define BT_LOG_BUF_SZ (4 * 4096)
139 #endif
140 /* Default number of bytes in one line of memory output. For large values
141 * BT_LOG_BUF_SZ also must be increased.
142 */
143 #ifndef BT_LOG_MEM_WIDTH
144 #define BT_LOG_MEM_WIDTH 32
145 #endif
146 /* String to put in the end of each log line (can be empty). Its value used by
147 * stderr output callback. Its size used as a default value for BT_LOG_EOL_SZ.
148 */
149 #ifndef BT_LOG_EOL
150 #define BT_LOG_EOL "\n"
151 #endif
152 /* Default delimiter that separates parts of log message. Can NOT contain '%'
153 * or '\0'.
154 *
155 * Log message format specifications can override (or ignore) this value. For
156 * more details see BT_LOG_MESSAGE_CTX_FORMAT, BT_LOG_MESSAGE_SRC_FORMAT and
157 * BT_LOG_MESSAGE_TAG_FORMAT.
158 */
159 #ifndef BT_LOG_DEF_DELIMITER
160 #define BT_LOG_DEF_DELIMITER " "
161 #endif
162 /* Specifies log message context format. Log message context includes date,
163 * time, process id, thread id and message's log level. Custom information can
164 * be added as well. Supported fields: YEAR, MONTH, DAY, HOUR, MINUTE, SECOND,
165 * MILLISECOND, PID, TID, LEVEL, S(str), F_INIT(statements),
166 * F_UINT(width, value).
167 *
168 * Must be defined as a tuple, for example:
169 *
170 * #define BT_LOG_MESSAGE_CTX_FORMAT (YEAR, S("."), MONTH, S("."), DAY, S(" > "))
171 *
172 * In that case, resulting log message will be:
173 *
174 * 2016.12.22 > TAG function@filename.c:line Message text
175 *
176 * Note, that tag, source location and message text are not impacted by
177 * this setting. See BT_LOG_MESSAGE_TAG_FORMAT and BT_LOG_MESSAGE_SRC_FORMAT.
178 *
179 * If message context must be visually separated from the rest of the message,
180 * it must be reflected in context format (notice trailing S(" > ") in the
181 * example above).
182 *
183 * S(str) adds constant string str. String can NOT contain '%' or '\0'.
184 *
185 * F_INIT(statements) adds initialization statement(s) that will be evaluated
186 * once for each log message. All statements are evaluated in specified order.
187 * Several F_INIT() fields can be used in every log message format
188 * specification. Fields, like F_UINT(width, value), are allowed to use results
189 * of initialization statements. If statement introduces variables (or other
190 * names, like structures) they must be prefixed with "f_". Statements must be
191 * enclosed into additional "()". Example:
192 *
193 * #define BT_LOG_MESSAGE_CTX_FORMAT \
194 * (F_INIT(( struct rusage f_ru; getrusage(RUSAGE_SELF, &f_ru); )), \
195 * YEAR, S("."), MONTH, S("."), DAY, S(" "), \
196 * F_UINT(5, f_ru.ru_nsignals), \
197 * S(" "))
198 *
199 * F_UINT(width, value) adds unsigned integer value extended with up to width
200 * spaces (for alignment purposes). Value can be any expression that evaluates
201 * to unsigned integer. If expression contains non-standard functions, they
202 * must be declared with F_INIT(). Example:
203 *
204 * #define BT_LOG_MESSAGE_CTX_FORMAT \
205 * (YEAR, S("."), MONTH, S("."), DAY, S(" "), \
206 * F_INIT(( unsigned tickcount(); )), \
207 * F_UINT(5, tickcount()), \
208 * S(" "))
209 *
210 * Other log message format specifications follow same rules, but have a
211 * different set of supported fields.
212 */
213 #ifndef BT_LOG_MESSAGE_CTX_FORMAT
214 #define BT_LOG_MESSAGE_CTX_FORMAT \
215 (MONTH, S("-"), DAY, S(BT_LOG_DEF_DELIMITER), \
216 HOUR, S(":"), MINUTE, S(":"), SECOND, S("."), MILLISECOND, S(BT_LOG_DEF_DELIMITER), \
217 PID, S(BT_LOG_DEF_DELIMITER), TID, S(BT_LOG_DEF_DELIMITER), \
218 LEVEL, S(BT_LOG_DEF_DELIMITER))
219 #endif
220 /* Example:
221 */
222 /* Specifies log message tag format. It includes tag prefix and tag. Custom
223 * information can be added as well. Supported fields:
224 * TAG(prefix_delimiter, tag_delimiter), S(str), F_INIT(statements),
225 * F_UINT(width, value).
226 *
227 * TAG(prefix_delimiter, tag_delimiter) adds following string to log message:
228 *
229 * PREFIX<prefix_delimiter>TAG<tag_delimiter>
230 *
231 * Prefix delimiter will be used only when prefix is not empty. Tag delimiter
232 * will be used only when prefixed tag is not empty. Example:
233 *
234 * #define BT_LOG_TAG_FORMAT (S("["), TAG(".", ""), S("] "))
235 *
236 * See BT_LOG_MESSAGE_CTX_FORMAT for details.
237 */
238 #ifndef BT_LOG_MESSAGE_TAG_FORMAT
239 #define BT_LOG_MESSAGE_TAG_FORMAT \
240 (TAG(".", BT_LOG_DEF_DELIMITER))
241 #endif
242 /* Specifies log message source location format. It includes function name,
243 * file name and file line. Custom information can be added as well. Supported
244 * fields: FUNCTION, FILENAME, FILELINE, S(str), F_INIT(statements),
245 * F_UINT(width, value).
246 *
247 * See BT_LOG_MESSAGE_CTX_FORMAT for details.
248 */
249 #ifndef BT_LOG_MESSAGE_SRC_FORMAT
250 #define BT_LOG_MESSAGE_SRC_FORMAT \
251 (FUNCTION, S("@"), FILENAME, S(":"), FILELINE, S(BT_LOG_DEF_DELIMITER))
252 #endif
253 /* Fields that can be used in log message format specifications (see above).
254 * Mentioning them here explicitly, so we know that nobody else defined them
255 * before us. See BT_LOG_MESSAGE_CTX_FORMAT for details.
256 */
257 #define YEAR YEAR
258 #define MONTH MONTH
259 #define DAY DAY
260 #define MINUTE MINUTE
261 #define SECOND SECOND
262 #define MILLISECOND MILLISECOND
263 #define PID PID
264 #define TID TID
265 #define LEVEL LEVEL
266 #define TAG(prefix_delim, tag_delim) TAG(prefix_delim, tag_delim)
267 #define FUNCTION FUNCTION
268 #define FILENAME FILENAME
269 #define FILELINE FILELINE
270 #define S(str) S(str)
271 #define F_INIT(statements) F_INIT(statements)
272 #define F_UINT(width, value) F_UINT(width, value)
273 /* Number of bytes to reserve for EOL in the log line buffer (must be >0).
274 * Must be larger than or equal to length of BT_LOG_EOL with terminating null.
275 */
276 #ifndef BT_LOG_EOL_SZ
277 #define BT_LOG_EOL_SZ sizeof(BT_LOG_EOL)
278 #endif
279 /* Compile instrumented version of the library to facilitate unit testing.
280 */
281 #ifndef BT_LOG_INSTRUMENTED
282 #define BT_LOG_INSTRUMENTED 0
283 #endif
284
285 #if defined(__linux__)
286 #if !defined(__ANDROID__) && !defined(_GNU_SOURCE)
287 #define _GNU_SOURCE
288 #endif
289 #endif
290 #if defined(__MINGW32__)
291 #ifdef __STRICT_ANSI__
292 #undef __STRICT_ANSI__
293 #endif
294 #endif
295 #include "common/assert.h"
296 #include <ctype.h>
297 #include <string.h>
298 #include <time.h>
299 #include <stdarg.h>
300 #include <stddef.h>
301 #include <stdlib.h>
302 #include <stdio.h>
303
304 #define BT_LOG_OUTPUT_LEVEL dummy
305
306 #include "log.h"
307 #include <babeltrace2/logging.h>
308
309 #if defined(_WIN32) || defined(_WIN64)
310 #include <windows.h>
311 #else
312 #include <unistd.h>
313 #include <sys/time.h>
314 #if defined(__linux__)
315 #include <linux/limits.h>
316 #elif (defined(__sun__) || defined(__CYGWIN__))
317 /* Solaris and Cygwin have no sys/syslimits.h */
318 #else
319 #include <sys/syslimits.h>
320 #endif
321 #endif
322
323 #if defined(__linux__)
324 #include <sys/prctl.h>
325 #include <sys/types.h>
326 #if !defined(__ANDROID__)
327 #include <sys/syscall.h>
328 #endif
329 #endif
330 #if defined(__MACH__)
331 #include <pthread.h>
332 #endif
333
334 #define INLINE _BT_LOG_INLINE
335 #define VAR_UNUSED(var) (void)var
336 #define RETVAL_UNUSED(expr) do { while(expr) break; } while(0)
337 #define STATIC_ASSERT(name, cond) \
338 typedef char assert_##name[(cond)? 1: -1]
339 #define ASSERT_UNREACHABLE(why) assert(!sizeof(why))
340 #ifndef _countof
341 #define _countof(xs) (sizeof(xs) / sizeof((xs)[0]))
342 #endif
343
344 #if BT_LOG_INSTRUMENTED
345 #define INSTRUMENTED_CONST
346 #else
347 #define INSTRUMENTED_CONST const
348 #endif
349
350 #define _PP_PASTE_2(a, b) a ## b
351 #define _PP_CONCAT_2(a, b) _PP_PASTE_2(a, b)
352
353 #define _PP_PASTE_3(a, b, c) a ## b ## c
354 #define _PP_CONCAT_3(a, b, c) _PP_PASTE_3(a, b, c)
355
356 /* Microsoft C preprocessor is a piece of shit. This moron treats __VA_ARGS__
357 * as a single token and requires additional expansion to realize that it's
358 * actually a list. If not for it, there would be no need in this extra
359 * expansion.
360 */
361 #define _PP_ID(x) x
362 #define _PP_NARGS_N(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,_21,_22,_23,_24,...) _24
363 #define _PP_NARGS(...) _PP_ID(_PP_NARGS_N(__VA_ARGS__,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0))
364
365 /* There is a more efficient way to implement this, but it requires
366 * working C preprocessor. Unfortunately, Microsoft Visual Studio doesn't
367 * have one.
368 */
369 #define _PP_HEAD__(x, ...) x
370 #define _PP_HEAD_(...) _PP_ID(_PP_HEAD__(__VA_ARGS__, ~))
371 #define _PP_HEAD(xs) _PP_HEAD_ xs
372 #define _PP_TAIL_(x, ...) (__VA_ARGS__)
373 #define _PP_TAIL(xs) _PP_TAIL_ xs
374 #define _PP_UNTUPLE_(...) __VA_ARGS__
375 #define _PP_UNTUPLE(xs) _PP_UNTUPLE_ xs
376
377 /* Apply function macro to each element in tuple. Output is not
378 * enforced to be a tuple.
379 */
380 #define _PP_MAP_1(f, xs) f(_PP_HEAD(xs))
381 #define _PP_MAP_2(f, xs) f(_PP_HEAD(xs)) _PP_MAP_1(f, _PP_TAIL(xs))
382 #define _PP_MAP_3(f, xs) f(_PP_HEAD(xs)) _PP_MAP_2(f, _PP_TAIL(xs))
383 #define _PP_MAP_4(f, xs) f(_PP_HEAD(xs)) _PP_MAP_3(f, _PP_TAIL(xs))
384 #define _PP_MAP_5(f, xs) f(_PP_HEAD(xs)) _PP_MAP_4(f, _PP_TAIL(xs))
385 #define _PP_MAP_6(f, xs) f(_PP_HEAD(xs)) _PP_MAP_5(f, _PP_TAIL(xs))
386 #define _PP_MAP_7(f, xs) f(_PP_HEAD(xs)) _PP_MAP_6(f, _PP_TAIL(xs))
387 #define _PP_MAP_8(f, xs) f(_PP_HEAD(xs)) _PP_MAP_7(f, _PP_TAIL(xs))
388 #define _PP_MAP_9(f, xs) f(_PP_HEAD(xs)) _PP_MAP_8(f, _PP_TAIL(xs))
389 #define _PP_MAP_10(f, xs) f(_PP_HEAD(xs)) _PP_MAP_9(f, _PP_TAIL(xs))
390 #define _PP_MAP_11(f, xs) f(_PP_HEAD(xs)) _PP_MAP_10(f, _PP_TAIL(xs))
391 #define _PP_MAP_12(f, xs) f(_PP_HEAD(xs)) _PP_MAP_11(f, _PP_TAIL(xs))
392 #define _PP_MAP_13(f, xs) f(_PP_HEAD(xs)) _PP_MAP_12(f, _PP_TAIL(xs))
393 #define _PP_MAP_14(f, xs) f(_PP_HEAD(xs)) _PP_MAP_13(f, _PP_TAIL(xs))
394 #define _PP_MAP_15(f, xs) f(_PP_HEAD(xs)) _PP_MAP_14(f, _PP_TAIL(xs))
395 #define _PP_MAP_16(f, xs) f(_PP_HEAD(xs)) _PP_MAP_15(f, _PP_TAIL(xs))
396 #define _PP_MAP_17(f, xs) f(_PP_HEAD(xs)) _PP_MAP_16(f, _PP_TAIL(xs))
397 #define _PP_MAP_18(f, xs) f(_PP_HEAD(xs)) _PP_MAP_17(f, _PP_TAIL(xs))
398 #define _PP_MAP_19(f, xs) f(_PP_HEAD(xs)) _PP_MAP_18(f, _PP_TAIL(xs))
399 #define _PP_MAP_20(f, xs) f(_PP_HEAD(xs)) _PP_MAP_19(f, _PP_TAIL(xs))
400 #define _PP_MAP_21(f, xs) f(_PP_HEAD(xs)) _PP_MAP_20(f, _PP_TAIL(xs))
401 #define _PP_MAP_22(f, xs) f(_PP_HEAD(xs)) _PP_MAP_21(f, _PP_TAIL(xs))
402 #define _PP_MAP_23(f, xs) f(_PP_HEAD(xs)) _PP_MAP_22(f, _PP_TAIL(xs))
403 #define _PP_MAP_24(f, xs) f(_PP_HEAD(xs)) _PP_MAP_23(f, _PP_TAIL(xs))
404 #define _PP_MAP(f, xs) _PP_CONCAT_2(_PP_MAP_, _PP_NARGS xs) (f, xs)
405
406 /* Apply function macro to each element in tuple in reverse order.
407 * Output is not enforced to be a tuple.
408 */
409 #define _PP_RMAP_1(f, xs) f(_PP_HEAD(xs))
410 #define _PP_RMAP_2(f, xs) _PP_RMAP_1(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
411 #define _PP_RMAP_3(f, xs) _PP_RMAP_2(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
412 #define _PP_RMAP_4(f, xs) _PP_RMAP_3(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
413 #define _PP_RMAP_5(f, xs) _PP_RMAP_4(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
414 #define _PP_RMAP_6(f, xs) _PP_RMAP_5(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
415 #define _PP_RMAP_7(f, xs) _PP_RMAP_6(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
416 #define _PP_RMAP_8(f, xs) _PP_RMAP_7(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
417 #define _PP_RMAP_9(f, xs) _PP_RMAP_8(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
418 #define _PP_RMAP_10(f, xs) _PP_RMAP_9(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
419 #define _PP_RMAP_11(f, xs) _PP_RMAP_10(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
420 #define _PP_RMAP_12(f, xs) _PP_RMAP_11(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
421 #define _PP_RMAP_13(f, xs) _PP_RMAP_12(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
422 #define _PP_RMAP_14(f, xs) _PP_RMAP_13(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
423 #define _PP_RMAP_15(f, xs) _PP_RMAP_14(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
424 #define _PP_RMAP_16(f, xs) _PP_RMAP_15(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
425 #define _PP_RMAP_17(f, xs) _PP_RMAP_16(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
426 #define _PP_RMAP_18(f, xs) _PP_RMAP_17(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
427 #define _PP_RMAP_19(f, xs) _PP_RMAP_18(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
428 #define _PP_RMAP_20(f, xs) _PP_RMAP_19(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
429 #define _PP_RMAP_21(f, xs) _PP_RMAP_20(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
430 #define _PP_RMAP_22(f, xs) _PP_RMAP_21(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
431 #define _PP_RMAP_23(f, xs) _PP_RMAP_22(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
432 #define _PP_RMAP_24(f, xs) _PP_RMAP_23(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
433 #define _PP_RMAP(f, xs) _PP_CONCAT_2(_PP_RMAP_, _PP_NARGS xs) (f, xs)
434
435 /* Used to implement _BT_LOG_MESSAGE_FORMAT_CONTAINS() macro. All possible
436 * fields must be mentioned here. Not counting F_INIT() here because it's
437 * somewhat special and is handled spearatly (at least for now).
438 */
439 #define _BT_LOG_MESSAGE_FORMAT_MASK__ (0<<0)
440 #define _BT_LOG_MESSAGE_FORMAT_MASK__YEAR (1<<1)
441 #define _BT_LOG_MESSAGE_FORMAT_MASK__MONTH (1<<2)
442 #define _BT_LOG_MESSAGE_FORMAT_MASK__DAY (1<<3)
443 #define _BT_LOG_MESSAGE_FORMAT_MASK__HOUR (1<<4)
444 #define _BT_LOG_MESSAGE_FORMAT_MASK__MINUTE (1<<5)
445 #define _BT_LOG_MESSAGE_FORMAT_MASK__SECOND (1<<6)
446 #define _BT_LOG_MESSAGE_FORMAT_MASK__MILLISECOND (1<<7)
447 #define _BT_LOG_MESSAGE_FORMAT_MASK__PID (1<<8)
448 #define _BT_LOG_MESSAGE_FORMAT_MASK__TID (1<<9)
449 #define _BT_LOG_MESSAGE_FORMAT_MASK__LEVEL (1<<10)
450 #define _BT_LOG_MESSAGE_FORMAT_MASK__TAG(ps, ts) (1<<11)
451 #define _BT_LOG_MESSAGE_FORMAT_MASK__FUNCTION (1<<12)
452 #define _BT_LOG_MESSAGE_FORMAT_MASK__FILENAME (1<<13)
453 #define _BT_LOG_MESSAGE_FORMAT_MASK__FILELINE (1<<14)
454 #define _BT_LOG_MESSAGE_FORMAT_MASK__S(s) (1<<15)
455 #define _BT_LOG_MESSAGE_FORMAT_MASK__F_INIT(expr) (0<<16)
456 #define _BT_LOG_MESSAGE_FORMAT_MASK__F_UINT(w, v) (1<<17)
457 #define _BT_LOG_MESSAGE_FORMAT_MASK(field) \
458 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_MASK_, _, field)
459
460 /* Logical "or" of masks of fields used in specified format specification.
461 */
462 #define _BT_LOG_MESSAGE_FORMAT_FIELDS(format) \
463 (0 _PP_MAP(| _BT_LOG_MESSAGE_FORMAT_MASK, format))
464
465 /* Expands to expressions that evaluates to true if field is used in
466 * specified format specification. Example:
467 *
468 * #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(F_UINT, BT_LOG_MESSAGE_CTX_FORMAT)
469 * ...
470 * #endif
471 */
472 #define _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, format) \
473 (_BT_LOG_MESSAGE_FORMAT_MASK(field) & _BT_LOG_MESSAGE_FORMAT_FIELDS(format))
474
475 /* Same, but checks all supported format specifications.
476 */
477 #define _BT_LOG_MESSAGE_FORMAT_FIELD_USED(field) \
478 (_BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_CTX_FORMAT) || \
479 _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_TAG_FORMAT) || \
480 _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_SRC_FORMAT))
481
482 #define _BT_LOG_MESSAGE_FORMAT_DATETIME_USED \
483 (_BT_LOG_MESSAGE_FORMAT_CONTAINS(YEAR, BT_LOG_MESSAGE_CTX_FORMAT) || \
484 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MONTH, BT_LOG_MESSAGE_CTX_FORMAT) || \
485 _BT_LOG_MESSAGE_FORMAT_CONTAINS(DAY, BT_LOG_MESSAGE_CTX_FORMAT) || \
486 _BT_LOG_MESSAGE_FORMAT_CONTAINS(HOUR, BT_LOG_MESSAGE_CTX_FORMAT) || \
487 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MINUTE, BT_LOG_MESSAGE_CTX_FORMAT) || \
488 _BT_LOG_MESSAGE_FORMAT_CONTAINS(SECOND, BT_LOG_MESSAGE_CTX_FORMAT) || \
489 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MILLISECOND, BT_LOG_MESSAGE_CTX_FORMAT))
490
491 #if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
492 #pragma warning(disable:4204) /* nonstandard extension used: non-constant aggregate initializer */
493 #define memccpy _memccpy
494 #endif
495
496 #if (defined(_MSC_VER) && !defined(__INTEL_COMPILER)) || \
497 (defined(__MINGW64__) && !defined(__USE_MINGW_ANSI_STDIO))
498 #define vsnprintf(s, sz, fmt, va) fake_vsnprintf(s, sz, fmt, va)
499 static int fake_vsnprintf(char *s, size_t sz, const char *fmt, va_list ap)
500 {
501 const int n = vsnprintf_s(s, sz, _TRUNCATE, fmt, ap);
502 return 0 < n? n: (int)sz + 1; /* no need in _vscprintf() for now */
503 }
504 #if BT_LOG_OPTIMIZE_SIZE
505 #define snprintf(s, sz, ...) fake_snprintf(s, sz, __VA_ARGS__)
506 static int fake_snprintf(char *s, size_t sz, const char *fmt, ...)
507 {
508 va_list va;
509 va_start(va, fmt);
510 const int n = fake_vsnprintf(s, sz, fmt, va);
511 va_end(va);
512 return n;
513 }
514 #endif
515 #endif
516
517 typedef void (*time_cb)(struct tm *const tm, unsigned *const usec);
518 typedef void (*pid_cb)(int *const pid, int *const tid);
519 typedef void (*buffer_cb)(bt_log_message *msg, char *buf);
520
521 typedef struct src_location
522 {
523 const char *const func;
524 const char *const file;
525 const unsigned line;
526 }
527 src_location;
528
529 typedef struct mem_block
530 {
531 const void *const d;
532 const unsigned d_sz;
533 }
534 mem_block;
535
536 static void time_callback(struct tm *const tm, unsigned *const usec);
537 static void pid_callback(int *const pid, int *const tid);
538 static void buffer_callback(bt_log_message *msg, char *buf);
539
540 STATIC_ASSERT(eol_fits_eol_sz, sizeof(BT_LOG_EOL) <= BT_LOG_EOL_SZ);
541 STATIC_ASSERT(eol_sz_greater_than_zero, 0 < BT_LOG_EOL_SZ);
542 STATIC_ASSERT(eol_sz_less_than_buf_sz, BT_LOG_EOL_SZ < BT_LOG_BUF_SZ);
543 static const char c_hex[] = "0123456789abcdef";
544
545 static __thread char logging_buf[4 * 4096];
546
547 static INSTRUMENTED_CONST unsigned g_buf_sz = BT_LOG_BUF_SZ - BT_LOG_EOL_SZ;
548 static INSTRUMENTED_CONST time_cb g_time_cb = time_callback;
549 static INSTRUMENTED_CONST pid_cb g_pid_cb = pid_callback;
550 static INSTRUMENTED_CONST buffer_cb g_buffer_cb = buffer_callback;
551
552 #if BT_LOG_USE_ANDROID_LOG
553 #include <android/log.h>
554
555 static INLINE int android_lvl(const int lvl)
556 {
557 switch (lvl)
558 {
559 case BT_LOG_TRACE:
560 return ANDROID_LOG_VERBOSE;
561 case BT_LOG_DEBUG:
562 return ANDROID_LOG_DEBUG;
563 case BT_LOG_INFO:
564 return ANDROID_LOG_INFO;
565 case BT_LOG_WARNING:
566 return ANDROID_LOG_WARN;
567 case BT_LOG_ERROR:
568 return ANDROID_LOG_ERROR;
569 case BT_LOG_FATAL:
570 return ANDROID_LOG_FATAL;
571 default:
572 ASSERT_UNREACHABLE("Bad log level");
573 return ANDROID_LOG_UNKNOWN;
574 }
575 }
576
577 static void out_android_callback(const bt_log_message *const msg, void *arg)
578 {
579 VAR_UNUSED(arg);
580 *msg->p = 0;
581 const char *tag = msg->p;
582 if (msg->tag_e != msg->tag_b)
583 {
584 tag = msg->tag_b;
585 *msg->tag_e = 0;
586 }
587 __android_log_print(android_lvl(msg->lvl), tag, "%s", msg->msg_b);
588 }
589
590 enum { OUT_ANDROID_MASK = BT_LOG_PUT_STD & ~BT_LOG_PUT_CTX };
591 #define OUT_ANDROID OUT_ANDROID_MASK, 0, out_android_callback
592 #endif
593
594 #if BT_LOG_USE_NSLOG
595 #include <CoreFoundation/CoreFoundation.h>
596 CF_EXPORT void CFLog(int32_t level, CFStringRef format, ...);
597
598 static INLINE int apple_lvl(const int lvl)
599 {
600 switch (lvl)
601 {
602 case BT_LOG_TRACE:
603 return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
604 case BT_LOG_DEBUG:
605 return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
606 case BT_LOG_INFO:
607 return 6; /* ASL_LEVEL_INFO / kCFLogLevelInfo */;
608 case BT_LOG_WARNING:
609 return 4; /* ASL_LEVEL_WARNING / kCFLogLevelWarning */;
610 case BT_LOG_ERROR:
611 return 3; /* ASL_LEVEL_ERR / kCFLogLevelError */;
612 case BT_LOG_FATAL:
613 return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
614 default:
615 ASSERT_UNREACHABLE("Bad log level");
616 return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
617 }
618 }
619
620 static void out_nslog_callback(const bt_log_message *const msg, void *arg)
621 {
622 VAR_UNUSED(arg);
623 *msg->p = 0;
624 CFLog(apple_lvl(msg->lvl), CFSTR("%s"), msg->tag_b);
625 }
626
627 enum { OUT_NSLOG_MASK = BT_LOG_PUT_STD & ~BT_LOG_PUT_CTX };
628 #define OUT_NSLOG OUT_NSLOG_MASK, 0, out_nslog_callback
629 #endif
630
631 #if BT_LOG_USE_DEBUGSTRING
632 #include <windows.h>
633
634 static void out_debugstring_callback(const bt_log_message *const msg, void *arg)
635 {
636 VAR_UNUSED(arg);
637 msg->p[0] = '\n';
638 msg->p[1] = '\0';
639 OutputDebugStringA(msg->buf);
640 }
641
642 enum { OUT_DEBUGSTRING_MASK = BT_LOG_PUT_STD };
643 #define OUT_DEBUGSTRING OUT_DEBUGSTRING_MASK, 0, out_debugstring_callback
644 #endif
645
646 BT_HIDDEN
647 void bt_log_out_stderr_callback(const bt_log_message *const msg, void *arg)
648 {
649 VAR_UNUSED(arg);
650 const size_t eol_len = sizeof(BT_LOG_EOL) - 1;
651 memcpy(msg->p, BT_LOG_EOL, eol_len);
652 #if defined(_WIN32) || defined(_WIN64)
653 /* WriteFile() is atomic for local files opened with FILE_APPEND_DATA and
654 without FILE_WRITE_DATA */
655 WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg->buf,
656 (DWORD)(msg->p - msg->buf + eol_len), 0, 0);
657 #else
658 /* write() is atomic for buffers less than or equal to PIPE_BUF. */
659 RETVAL_UNUSED(write(STDERR_FILENO, msg->buf,
660 (size_t)(msg->p - msg->buf) + eol_len));
661 #endif
662 }
663
664 static const bt_log_output out_stderr = {BT_LOG_OUT_STDERR};
665
666 #if !BT_LOG_EXTERN_TAG_PREFIX
667 BT_LOG_DEFINE_TAG_PREFIX = 0;
668 #endif
669
670 #if !BT_LOG_EXTERN_GLOBAL_FORMAT
671 BT_LOG_DEFINE_GLOBAL_FORMAT = {BT_LOG_MEM_WIDTH};
672 #endif
673
674 #if !BT_LOG_EXTERN_GLOBAL_OUTPUT
675 #if BT_LOG_USE_ANDROID_LOG
676 BT_LOG_DEFINE_GLOBAL_OUTPUT = {OUT_ANDROID};
677 #elif BT_LOG_USE_NSLOG
678 BT_LOG_DEFINE_GLOBAL_OUTPUT = {OUT_NSLOG};
679 #elif BT_LOG_USE_DEBUGSTRING
680 BT_LOG_DEFINE_GLOBAL_OUTPUT = {OUT_DEBUGSTRING};
681 #else
682 BT_LOG_DEFINE_GLOBAL_OUTPUT = {BT_LOG_OUT_STDERR};
683 #endif
684 #endif
685
686 #if !BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
687 BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL = 0;
688 #endif
689
690 BT_HIDDEN
691 const bt_log_spec _bt_log_stderr_spec =
692 {
693 BT_LOG_GLOBAL_FORMAT,
694 &out_stderr,
695 };
696
697 static const bt_log_spec global_spec =
698 {
699 BT_LOG_GLOBAL_FORMAT,
700 BT_LOG_GLOBAL_OUTPUT,
701 };
702
703 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(LEVEL, BT_LOG_MESSAGE_CTX_FORMAT)
704 static char lvl_char(const int lvl)
705 {
706 switch (lvl)
707 {
708 case BT_LOG_TRACE:
709 return 'T';
710 case BT_LOG_DEBUG:
711 return 'D';
712 case BT_LOG_INFO:
713 return 'I';
714 case BT_LOG_WARNING:
715 return 'W';
716 case BT_LOG_ERROR:
717 return 'E';
718 case BT_LOG_FATAL:
719 return 'F';
720 default:
721 ASSERT_UNREACHABLE("Bad log level");
722 return '?';
723 }
724 }
725 #endif
726
727 #define GCCVER_LESS(MAJOR, MINOR, PATCH) \
728 (__GNUC__ < MAJOR || \
729 (__GNUC__ == MAJOR && (__GNUC_MINOR__ < MINOR || \
730 (__GNUC_MINOR__ == MINOR && __GNUC_PATCHLEVEL__ < PATCH))))
731
732 #if !defined(__clang__) && defined(__GNUC__) && GCCVER_LESS(4,7,0)
733 #define __atomic_load_n(vp, model) __sync_fetch_and_add(vp, 0)
734 #define __atomic_fetch_add(vp, n, model) __sync_fetch_and_add(vp, n)
735 #define __atomic_sub_fetch(vp, n, model) __sync_sub_and_fetch(vp, n)
736 #define __atomic_or_fetch(vp, n, model) __sync_or_and_fetch(vp, n)
737 #define __atomic_and_fetch(vp, n, model) __sync_and_and_fetch(vp, n)
738 /* Note: will not store old value of *vp in *ep (non-standard behaviour) */
739 #define __atomic_compare_exchange_n(vp, ep, d, weak, smodel, fmodel) \
740 __sync_bool_compare_and_swap(vp, *(ep), d)
741 #endif
742
743 #if !BT_LOG_OPTIMIZE_SIZE && !defined(_WIN32) && !defined(_WIN64)
744 #define TCACHE
745 #define TCACHE_STALE (0x40000000)
746 #define TCACHE_FLUID (0x40000000 | 0x80000000)
747 static unsigned g_tcache_mode = TCACHE_STALE;
748 static struct timeval g_tcache_tv = {0, 0};
749 static struct tm g_tcache_tm = {0};
750
751 static INLINE int tcache_get(const struct timeval *const tv, struct tm *const tm)
752 {
753 unsigned mode;
754 mode = __atomic_load_n(&g_tcache_mode, __ATOMIC_RELAXED);
755 if (0 == (mode & TCACHE_FLUID))
756 {
757 mode = __atomic_fetch_add(&g_tcache_mode, 1, __ATOMIC_ACQUIRE);
758 if (0 == (mode & TCACHE_FLUID))
759 {
760 if (g_tcache_tv.tv_sec == tv->tv_sec)
761 {
762 *tm = g_tcache_tm;
763 __atomic_sub_fetch(&g_tcache_mode, 1, __ATOMIC_RELEASE);
764 return !0;
765 }
766 __atomic_or_fetch(&g_tcache_mode, TCACHE_STALE, __ATOMIC_RELAXED);
767 }
768 __atomic_sub_fetch(&g_tcache_mode, 1, __ATOMIC_RELEASE);
769 }
770 return 0;
771 }
772
773 static INLINE void tcache_set(const struct timeval *const tv, struct tm *const tm)
774 {
775 unsigned stale = TCACHE_STALE;
776 if (__atomic_compare_exchange_n(&g_tcache_mode, &stale, TCACHE_FLUID,
777 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
778 {
779 g_tcache_tv = *tv;
780 g_tcache_tm = *tm;
781 __atomic_and_fetch(&g_tcache_mode, ~TCACHE_FLUID, __ATOMIC_RELEASE);
782 }
783 }
784 #endif
785
786 static void time_callback(struct tm *const tm, unsigned *const msec)
787 {
788 #if !_BT_LOG_MESSAGE_FORMAT_DATETIME_USED
789 VAR_UNUSED(tm);
790 VAR_UNUSED(msec);
791 #else
792 #if defined(_WIN32) || defined(_WIN64)
793 SYSTEMTIME st;
794 GetLocalTime(&st);
795 tm->tm_year = st.wYear;
796 tm->tm_mon = st.wMonth;
797 tm->tm_mday = st.wDay;
798 tm->tm_wday = st.wDayOfWeek;
799 tm->tm_hour = st.wHour;
800 tm->tm_min = st.wMinute;
801 tm->tm_sec = st.wSecond;
802 *msec = st.wMilliseconds;
803 #else
804 struct timeval tv;
805 gettimeofday(&tv, 0);
806 #ifndef TCACHE
807 localtime_r(&tv.tv_sec, tm);
808 #else
809 if (!tcache_get(&tv, tm))
810 {
811 localtime_r(&tv.tv_sec, tm);
812 tcache_set(&tv, tm);
813 }
814 #endif
815 *msec = (unsigned)tv.tv_usec / 1000;
816 #endif
817 #endif
818 }
819
820 static void pid_callback(int *const pid, int *const tid)
821 {
822 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(PID, BT_LOG_MESSAGE_CTX_FORMAT)
823 VAR_UNUSED(pid);
824 #else
825 #if defined(_WIN32) || defined(_WIN64)
826 *pid = GetCurrentProcessId();
827 #else
828 *pid = getpid();
829 #endif
830 #endif
831
832 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(TID, BT_LOG_MESSAGE_CTX_FORMAT)
833 VAR_UNUSED(tid);
834 #else
835 #if defined(_WIN32) || defined(_WIN64)
836 *tid = GetCurrentThreadId();
837 #elif defined(__CYGWIN__)
838 pthread_t thr = pthread_self();
839 *tid = (int)pthread_getsequence_np(&thr);
840 #elif defined(__sun__)
841 *tid = (int)pthread_self();
842 #elif defined(__ANDROID__)
843 *tid = gettid();
844 #elif defined(__linux__)
845 *tid = syscall(SYS_gettid);
846 #elif defined(__MACH__)
847 *tid = (int)pthread_mach_thread_np(pthread_self());
848 #else
849 #define Platform not supported
850 #endif
851 #endif
852 }
853
854 static void buffer_callback(bt_log_message *msg, char *buf)
855 {
856 msg->e = (msg->p = msg->buf = buf) + g_buf_sz;
857 }
858
859 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(FUNCTION, BT_LOG_MESSAGE_SRC_FORMAT)
860 static const char *funcname(const char *func)
861 {
862 return func? func: "";
863 }
864 #endif
865
866 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(FILENAME, BT_LOG_MESSAGE_SRC_FORMAT)
867 static const char *filename(const char *file)
868 {
869 const char *f = file;
870 for (const char *p = file; 0 != *p; ++p)
871 {
872 if ('/' == *p || '\\' == *p)
873 {
874 f = p + 1;
875 }
876 }
877 return f;
878 }
879 #endif
880
881 static INLINE size_t nprintf_size(bt_log_message *const msg)
882 {
883 // *nprintf() always puts 0 in the end when input buffer is not empty. This
884 // 0 is not desired because its presence sets (ctx->p) to (ctx->e - 1) which
885 // leaves space for one more character. Some put_xxx() functions don't use
886 // *nprintf() and could use that last character. In that case log line will
887 // have multiple (two) half-written parts which is confusing. To workaround
888 // that we allow *nprintf() to write its 0 in the eol area (which is always
889 // not empty).
890 return (size_t)(msg->e - msg->p + 1);
891 }
892
893 static INLINE void put_nprintf(bt_log_message *const msg, const int n)
894 {
895 if (0 < n)
896 {
897 msg->p = n < msg->e - msg->p? msg->p + n: msg->e;
898 }
899 }
900
901 static INLINE char *put_padding_r(const unsigned w, const char wc,
902 char *p, char *e)
903 {
904 for (char *const b = e - w; b < p; *--p = wc) {}
905 return p;
906 }
907
908 static char *put_integer_r(unsigned v, const int sign,
909 const unsigned w, const char wc, char *const e)
910 {
911 static const char _signs[] = {'-', '0', '+'};
912 const char *const signs = _signs + 1;
913 char *p = e;
914 do { *--p = '0' + v % 10; } while (0 != (v /= 10));
915 if (0 == sign) return put_padding_r(w, wc, p, e);
916 if ('0' != wc)
917 {
918 *--p = signs[sign];
919 return put_padding_r(w, wc, p, e);
920 }
921 p = put_padding_r(w, wc, p, e + 1);
922 *--p = signs[sign];
923 return p;
924 }
925
926 static INLINE char *put_uint_r(const unsigned v, const unsigned w, const char wc,
927 char *const e)
928 {
929 return put_integer_r(v, 0, w, wc, e);
930 }
931
932 static INLINE char *put_int_r(const int v, const unsigned w, const char wc,
933 char *const e)
934 {
935 return 0 <= v? put_integer_r((unsigned)v, 0, w, wc, e)
936 : put_integer_r((unsigned)-v, -1, w, wc, e);
937 }
938
939 static INLINE char *put_stringn(const char *const s_p, const char *const s_e,
940 char *const p, char *const e)
941 {
942 const ptrdiff_t m = e - p;
943 ptrdiff_t n = s_e - s_p;
944 if (n > m)
945 {
946 n = m;
947 }
948 memcpy(p, s_p, n);
949 return p + n;
950 }
951
952 static INLINE char *put_string(const char *s, char *p, char *const e)
953 {
954 const ptrdiff_t n = e - p;
955 char *const c = (char *)memccpy(p, s, '\0', n);
956 return 0 != c? c - 1: e;
957 }
958
959 static INLINE char *put_uint(unsigned v, const unsigned w, const char wc,
960 char *const p, char *const e)
961 {
962 char buf[16];
963 char *const se = buf + _countof(buf);
964 char *sp = put_uint_r(v, w, wc, se);
965 return put_stringn(sp, se, p, e);
966 }
967
968 #define PUT_CSTR_R(p, STR) \
969 do { \
970 for (unsigned i = sizeof(STR) - 1; 0 < i--;) { \
971 *--(p) = (STR)[i]; \
972 } \
973 } _BT_LOG_ONCE
974
975 #define PUT_CSTR_CHECKED(p, e, STR) \
976 do { \
977 for (unsigned i = 0; (e) > (p) && (sizeof(STR) - 1) > i; ++i) { \
978 *(p)++ = (STR)[i]; \
979 } \
980 } _BT_LOG_ONCE
981
982 /* F_INIT field support.
983 */
984 #define _BT_LOG_MESSAGE_FORMAT_INIT__
985 #define _BT_LOG_MESSAGE_FORMAT_INIT__YEAR
986 #define _BT_LOG_MESSAGE_FORMAT_INIT__MONTH
987 #define _BT_LOG_MESSAGE_FORMAT_INIT__DAY
988 #define _BT_LOG_MESSAGE_FORMAT_INIT__HOUR
989 #define _BT_LOG_MESSAGE_FORMAT_INIT__MINUTE
990 #define _BT_LOG_MESSAGE_FORMAT_INIT__SECOND
991 #define _BT_LOG_MESSAGE_FORMAT_INIT__MILLISECOND
992 #define _BT_LOG_MESSAGE_FORMAT_INIT__PID
993 #define _BT_LOG_MESSAGE_FORMAT_INIT__TID
994 #define _BT_LOG_MESSAGE_FORMAT_INIT__LEVEL
995 #define _BT_LOG_MESSAGE_FORMAT_INIT__TAG(ps, ts)
996 #define _BT_LOG_MESSAGE_FORMAT_INIT__FUNCTION
997 #define _BT_LOG_MESSAGE_FORMAT_INIT__FILENAME
998 #define _BT_LOG_MESSAGE_FORMAT_INIT__FILELINE
999 #define _BT_LOG_MESSAGE_FORMAT_INIT__S(s)
1000 #define _BT_LOG_MESSAGE_FORMAT_INIT__F_INIT(expr) _PP_UNTUPLE(expr);
1001 #define _BT_LOG_MESSAGE_FORMAT_INIT__F_UINT(w, v)
1002 #define _BT_LOG_MESSAGE_FORMAT_INIT(field) \
1003 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_INIT_, _, field)
1004
1005 /* Implements generation of printf-like format string for log message
1006 * format specification.
1007 */
1008 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__ ""
1009 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__YEAR "%04u"
1010 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MONTH "%02u"
1011 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__DAY "%02u"
1012 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__HOUR "%02u"
1013 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MINUTE "%02u"
1014 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__SECOND "%02u"
1015 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MILLISECOND "%03u"
1016 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__PID "%5i"
1017 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__TID "%5i"
1018 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__LEVEL "%c"
1019 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__TAG UNDEFINED
1020 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FUNCTION "%s"
1021 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FILENAME "%s"
1022 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FILELINE "%u"
1023 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__S(s) s
1024 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__F_INIT(expr) ""
1025 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__F_UINT(w, v) "%" #w "u"
1026 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT(field) \
1027 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT_, _, field)
1028
1029 /* Implements generation of printf-like format parameters for log message
1030 * format specification.
1031 */
1032 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__
1033 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__YEAR ,(unsigned)(tm.tm_year + 1900)
1034 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MONTH ,(unsigned)(tm.tm_mon + 1)
1035 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__DAY ,(unsigned)tm.tm_mday
1036 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__HOUR ,(unsigned)tm.tm_hour
1037 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MINUTE ,(unsigned)tm.tm_min
1038 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__SECOND ,(unsigned)tm.tm_sec
1039 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MILLISECOND ,(unsigned)msec
1040 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__PID ,pid
1041 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__TID ,tid
1042 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__LEVEL ,(char)lvl_char(msg->lvl)
1043 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__TAG UNDEFINED
1044 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FUNCTION ,funcname(src->func)
1045 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FILENAME ,filename(src->file)
1046 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FILELINE ,src->line
1047 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__S(s)
1048 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__F_INIT(expr)
1049 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__F_UINT(w, v) ,v
1050 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL(field) \
1051 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL_, _, field)
1052
1053 /* Implements generation of put_xxx_t statements for log message specification.
1054 */
1055 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__
1056 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__YEAR p = put_uint_r(tm.tm_year + 1900, 4, '0', p);
1057 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MONTH p = put_uint_r((unsigned)tm.tm_mon + 1, 2, '0', p);
1058 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__DAY p = put_uint_r((unsigned)tm.tm_mday, 2, '0', p);
1059 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__HOUR p = put_uint_r((unsigned)tm.tm_hour, 2, '0', p);
1060 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MINUTE p = put_uint_r((unsigned)tm.tm_min, 2, '0', p);
1061 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__SECOND p = put_uint_r((unsigned)tm.tm_sec, 2, '0', p);
1062 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MILLISECOND p = put_uint_r(msec, 3, '0', p);
1063 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__PID p = put_int_r(pid, 5, ' ', p);
1064 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__TID p = put_int_r(tid, 5, ' ', p);
1065 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__LEVEL *--p = lvl_char(msg->lvl);
1066 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__TAG UNDEFINED
1067 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FUNCTION UNDEFINED
1068 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FILENAME UNDEFINED
1069 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FILELINE UNDEFINED
1070 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__S(s) PUT_CSTR_R(p, s);
1071 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__F_INIT(expr)
1072 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__F_UINT(w, v) p = put_uint_r(v, w, ' ', p);
1073 #define _BT_LOG_MESSAGE_FORMAT_PUT_R(field) \
1074 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PUT_R_, _, field)
1075
1076 static void put_ctx(bt_log_message *const msg)
1077 {
1078 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT, BT_LOG_MESSAGE_CTX_FORMAT)
1079 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_CTX_FORMAT)
1080 VAR_UNUSED(msg);
1081 #else
1082 #if _BT_LOG_MESSAGE_FORMAT_DATETIME_USED
1083 struct tm tm;
1084 unsigned msec;
1085 g_time_cb(&tm, &msec);
1086 #endif
1087 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(PID, BT_LOG_MESSAGE_CTX_FORMAT) || \
1088 _BT_LOG_MESSAGE_FORMAT_CONTAINS(TID, BT_LOG_MESSAGE_CTX_FORMAT)
1089 int pid, tid;
1090 g_pid_cb(&pid, &tid);
1091 #endif
1092
1093 #if BT_LOG_OPTIMIZE_SIZE
1094 int n;
1095 n = snprintf(msg->p, nprintf_size(msg),
1096 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT, BT_LOG_MESSAGE_CTX_FORMAT)
1097 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL, BT_LOG_MESSAGE_CTX_FORMAT));
1098 put_nprintf(msg, n);
1099 #else
1100 char buf[64];
1101 char *const e = buf + sizeof(buf);
1102 char *p = e;
1103 _PP_RMAP(_BT_LOG_MESSAGE_FORMAT_PUT_R, BT_LOG_MESSAGE_CTX_FORMAT)
1104 msg->p = put_stringn(p, e, msg->p, msg->e);
1105 #endif
1106 #endif
1107 }
1108
1109 #define PUT_TAG(msg, tag, prefix_delim, tag_delim) \
1110 do { \
1111 const char *ch; \
1112 msg->tag_b = msg->p; \
1113 if (0 != (ch = _bt_log_tag_prefix)) { \
1114 for (;msg->e != msg->p && 0 != (*msg->p = *ch); ++msg->p, ++ch) {} \
1115 } \
1116 if (0 != (ch = tag) && 0 != tag[0]) { \
1117 if (msg->tag_b != msg->p) { \
1118 PUT_CSTR_CHECKED(msg->p, msg->e, prefix_delim); \
1119 } \
1120 for (;msg->e != msg->p && 0 != (*msg->p = *ch); ++msg->p, ++ch) {} \
1121 } \
1122 msg->tag_e = msg->p; \
1123 if (msg->tag_b != msg->p) { \
1124 PUT_CSTR_CHECKED(msg->p, msg->e, tag_delim); \
1125 } \
1126 } _BT_LOG_ONCE
1127
1128 /* Implements simple put statements for log message specification.
1129 */
1130 #define _BT_LOG_MESSAGE_FORMAT_PUT__
1131 #define _BT_LOG_MESSAGE_FORMAT_PUT__YEAR UNDEFINED
1132 #define _BT_LOG_MESSAGE_FORMAT_PUT__MONTH UNDEFINED
1133 #define _BT_LOG_MESSAGE_FORMAT_PUT__DAY UNDEFINED
1134 #define _BT_LOG_MESSAGE_FORMAT_PUT__HOUR UNDEFINED
1135 #define _BT_LOG_MESSAGE_FORMAT_PUT__MINUTE UNDEFINED
1136 #define _BT_LOG_MESSAGE_FORMAT_PUT__SECOND UNDEFINED
1137 #define _BT_LOG_MESSAGE_FORMAT_PUT__MILLISECOND UNDEFINED
1138 #define _BT_LOG_MESSAGE_FORMAT_PUT__PID UNDEFINED
1139 #define _BT_LOG_MESSAGE_FORMAT_PUT__TID UNDEFINED
1140 #define _BT_LOG_MESSAGE_FORMAT_PUT__LEVEL UNDEFINED
1141 #define _BT_LOG_MESSAGE_FORMAT_PUT__TAG(pd, td) PUT_TAG(msg, tag, pd, td);
1142 #define _BT_LOG_MESSAGE_FORMAT_PUT__FUNCTION msg->p = put_string(funcname(src->func), msg->p, msg->e);
1143 #define _BT_LOG_MESSAGE_FORMAT_PUT__FILENAME msg->p = put_string(filename(src->file), msg->p, msg->e);
1144 #define _BT_LOG_MESSAGE_FORMAT_PUT__FILELINE msg->p = put_uint(src->line, 0, '\0', msg->p, msg->e);
1145 #define _BT_LOG_MESSAGE_FORMAT_PUT__S(s) PUT_CSTR_CHECKED(msg->p, msg->e, s);
1146 #define _BT_LOG_MESSAGE_FORMAT_PUT__F_INIT(expr)
1147 #define _BT_LOG_MESSAGE_FORMAT_PUT__F_UINT(w, v) msg->p = put_uint(v, w, ' ', msg->p, msg->e);
1148 #define _BT_LOG_MESSAGE_FORMAT_PUT(field) \
1149 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PUT_, _, field)
1150
1151 static void put_tag(bt_log_message *const msg, const char *const tag)
1152 {
1153 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT, BT_LOG_MESSAGE_TAG_FORMAT)
1154
1155 /*
1156 * This generates a -Wundef warning. The issue was reported upstream:
1157 *
1158 * https://github.com/wonder-mice/zf_log/issues/40
1159 *
1160 * but there's not much we can do here, so just silence it.
1161 */
1162 #pragma GCC diagnostic push
1163 #pragma GCC diagnostic ignored "-Wundef"
1164 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(TAG, BT_LOG_MESSAGE_TAG_FORMAT)
1165 VAR_UNUSED(tag);
1166 #endif
1167 #pragma GCC diagnostic pop
1168
1169 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_TAG_FORMAT)
1170 VAR_UNUSED(msg);
1171 #else
1172 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PUT, BT_LOG_MESSAGE_TAG_FORMAT)
1173 #endif
1174 }
1175
1176 static void put_src(bt_log_message *const msg, const src_location *const src)
1177 {
1178 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT, BT_LOG_MESSAGE_SRC_FORMAT)
1179 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FUNCTION, BT_LOG_MESSAGE_SRC_FORMAT) && \
1180 !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FILENAME, BT_LOG_MESSAGE_SRC_FORMAT) && \
1181 !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FILELINE, BT_LOG_MESSAGE_SRC_FORMAT)
1182 VAR_UNUSED(src);
1183 #endif
1184 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_SRC_FORMAT)
1185 VAR_UNUSED(msg);
1186 #else
1187 #if BT_LOG_OPTIMIZE_SIZE
1188 int n;
1189 n = snprintf(msg->p, nprintf_size(msg),
1190 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT, BT_LOG_MESSAGE_SRC_FORMAT)
1191 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL, BT_LOG_MESSAGE_SRC_FORMAT));
1192 put_nprintf(msg, n);
1193 #else
1194 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PUT, BT_LOG_MESSAGE_SRC_FORMAT)
1195 #endif
1196 #endif
1197 }
1198
1199 static _BT_LOG_PRINTFLIKE(2, 0)
1200 void put_msg(bt_log_message *const msg,
1201 const char *const fmt, va_list va)
1202 {
1203 int n;
1204 msg->msg_b = msg->p;
1205 n = vsnprintf(msg->p, nprintf_size(msg), fmt, va);
1206 put_nprintf(msg, n);
1207 }
1208
1209 static void output_mem(const bt_log_spec *log, bt_log_message *const msg,
1210 const mem_block *const mem)
1211 {
1212 if (0 == mem->d || 0 == mem->d_sz)
1213 {
1214 return;
1215 }
1216 const unsigned char *mem_p = (const unsigned char *)mem->d;
1217 const unsigned char *const mem_e = mem_p + mem->d_sz;
1218 const unsigned char *mem_cut;
1219 const ptrdiff_t mem_width = (ptrdiff_t)log->format->mem_width;
1220 char *const hex_b = msg->msg_b;
1221 char *const ascii_b = hex_b + 2 * mem_width + 2;
1222 char *const ascii_e = ascii_b + mem_width;
1223 if (msg->e < ascii_e)
1224 {
1225 return;
1226 }
1227 while (mem_p != mem_e)
1228 {
1229 char *hex = hex_b;
1230 char *ascii = ascii_b;
1231 for (mem_cut = mem_width < mem_e - mem_p? mem_p + mem_width: mem_e;
1232 mem_cut != mem_p; ++mem_p)
1233 {
1234 const unsigned char ch = *mem_p;
1235 *hex++ = c_hex[(0xf0 & ch) >> 4];
1236 *hex++ = c_hex[(0x0f & ch)];
1237 *ascii++ = isprint(ch)? (char)ch: '?';
1238 }
1239 while (hex != ascii_b)
1240 {
1241 *hex++ = ' ';
1242 }
1243 msg->p = ascii;
1244 log->output->callback(msg, log->output->arg);
1245 }
1246 }
1247
1248 BT_HIDDEN
1249 void bt_log_set_tag_prefix(const char *const prefix)
1250 {
1251 _bt_log_tag_prefix = prefix;
1252 }
1253
1254 BT_HIDDEN
1255 void bt_log_set_mem_width(const unsigned w)
1256 {
1257 _bt_log_global_format.mem_width = w;
1258 }
1259
1260 BT_HIDDEN
1261 void bt_log_set_output_level(const int lvl)
1262 {
1263 _bt_log_global_output_lvl = lvl;
1264 }
1265
1266 BT_HIDDEN
1267 void bt_log_set_output_v(const unsigned mask, void *const arg,
1268 const bt_log_output_cb callback)
1269 {
1270 _bt_log_global_output.mask = mask;
1271 _bt_log_global_output.arg = arg;
1272 _bt_log_global_output.callback = callback;
1273 }
1274
1275 static _BT_LOG_PRINTFLIKE(6, 0)
1276 void _bt_log_write_imp(
1277 const bt_log_spec *log,
1278 const src_location *const src, const mem_block *const mem,
1279 const int lvl, const char *const tag, const char *const fmt, va_list va)
1280 {
1281 bt_log_message msg;
1282 char *buf = logging_buf;
1283 const unsigned mask = log->output->mask;
1284 msg.lvl = lvl;
1285 msg.tag = tag;
1286 g_buffer_cb(&msg, buf);
1287 const char *rst_color_p = bt_common_color_reset();
1288 const char *rst_color_e = rst_color_p + strlen(rst_color_p);
1289 const char *color_p = "";
1290 const char *color_e = color_p;
1291
1292 switch (lvl) {
1293 case BT_LOG_INFO:
1294 color_p = bt_common_color_fg_blue();
1295 color_e = color_p + strlen(color_p);
1296 break;
1297 case BT_LOG_WARNING:
1298 color_p = bt_common_color_fg_yellow();
1299 color_e = color_p + strlen(color_p);
1300 break;
1301 case BT_LOG_ERROR:
1302 case BT_LOG_FATAL:
1303 color_p = bt_common_color_fg_red();
1304 color_e = color_p + strlen(color_p);
1305 break;
1306 default:
1307 break;
1308 }
1309
1310 msg.p = put_stringn(color_p, color_e, msg.p, msg.e);
1311
1312 if (BT_LOG_PUT_CTX & mask)
1313 {
1314 put_ctx(&msg);
1315 }
1316 if (BT_LOG_PUT_TAG & mask)
1317 {
1318 put_tag(&msg, tag);
1319 }
1320 if (0 != src && BT_LOG_PUT_SRC & mask)
1321 {
1322 put_src(&msg, src);
1323 }
1324 if (BT_LOG_PUT_MSG & mask)
1325 {
1326 put_msg(&msg, fmt, va);
1327 }
1328 msg.p = put_stringn(rst_color_p, rst_color_e, msg.p, msg.e);
1329 log->output->callback(&msg, log->output->arg);
1330 if (0 != mem && BT_LOG_PUT_MSG & mask)
1331 {
1332 output_mem(log, &msg, mem);
1333 }
1334 }
1335
1336 BT_HIDDEN
1337 void _bt_log_write_d(
1338 const char *const func, const char *const file, const unsigned line,
1339 const int lvl, const char *const tag,
1340 const char *const fmt, ...)
1341 {
1342 const src_location src = {func, file, line};
1343 va_list va;
1344 va_start(va, fmt);
1345 _bt_log_write_imp(&global_spec, &src, 0, lvl, tag, fmt, va);
1346 va_end(va);
1347 }
1348
1349 BT_HIDDEN
1350 void _bt_log_write_aux_d(
1351 const char *const func, const char *const file, const unsigned line,
1352 const bt_log_spec *const log, const int lvl, const char *const tag,
1353 const char *const fmt, ...)
1354 {
1355 const src_location src = {func, file, line};
1356 va_list va;
1357 va_start(va, fmt);
1358 _bt_log_write_imp(log, &src, 0, lvl, tag, fmt, va);
1359 va_end(va);
1360 }
1361
1362 BT_HIDDEN
1363 void _bt_log_write(const int lvl, const char *const tag,
1364 const char *const fmt, ...)
1365 {
1366 va_list va;
1367 va_start(va, fmt);
1368 _bt_log_write_imp(&global_spec, 0, 0, lvl, tag, fmt, va);
1369 va_end(va);
1370 }
1371
1372 BT_HIDDEN
1373 void _bt_log_write_aux(
1374 const bt_log_spec *const log, const int lvl, const char *const tag,
1375 const char *const fmt, ...)
1376 {
1377 va_list va;
1378 va_start(va, fmt);
1379 _bt_log_write_imp(log, 0, 0, lvl, tag, fmt, va);
1380 va_end(va);
1381 }
1382
1383 BT_HIDDEN
1384 void _bt_log_write_mem_d(
1385 const char *const func, const char *const file, const unsigned line,
1386 const int lvl, const char *const tag,
1387 const void *const d, const unsigned d_sz,
1388 const char *const fmt, ...)
1389 {
1390 const src_location src = {func, file, line};
1391 const mem_block mem = {d, d_sz};
1392 va_list va;
1393 va_start(va, fmt);
1394 _bt_log_write_imp(&global_spec, &src, &mem, lvl, tag, fmt, va);
1395 va_end(va);
1396 }
1397
1398 BT_HIDDEN
1399 void _bt_log_write_mem_aux_d(
1400 const char *const func, const char *const file, const unsigned line,
1401 const bt_log_spec *const log, const int lvl, const char *const tag,
1402 const void *const d, const unsigned d_sz,
1403 const char *const fmt, ...)
1404 {
1405 const src_location src = {func, file, line};
1406 const mem_block mem = {d, d_sz};
1407 va_list va;
1408 va_start(va, fmt);
1409 _bt_log_write_imp(log, &src, &mem, lvl, tag, fmt, va);
1410 va_end(va);
1411 }
1412
1413 BT_HIDDEN
1414 void _bt_log_write_mem(const int lvl, const char *const tag,
1415 const void *const d, const unsigned d_sz,
1416 const char *const fmt, ...)
1417 {
1418 const mem_block mem = {d, d_sz};
1419 va_list va;
1420 va_start(va, fmt);
1421 _bt_log_write_imp(&global_spec, 0, &mem, lvl, tag, fmt, va);
1422 va_end(va);
1423 }
1424
1425 BT_HIDDEN
1426 void _bt_log_write_mem_aux(
1427 const bt_log_spec *const log, const int lvl, const char *const tag,
1428 const void *const d, const unsigned d_sz,
1429 const char *const fmt, ...)
1430 {
1431 const mem_block mem = {d, d_sz};
1432 va_list va;
1433 va_start(va, fmt);
1434 _bt_log_write_imp(log, 0, &mem, lvl, tag, fmt, va);
1435 va_end(va);
1436 }
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