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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__) || defined(__GNU__))
317 /* Solaris, Cygwin and Hurd 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 #if defined(__GNU__)
334 #include <mach.h>
335 #endif
336
337 #define INLINE _BT_LOG_INLINE
338 #define VAR_UNUSED(var) (void)var
339 #define RETVAL_UNUSED(expr) do { while(expr) break; } while(0)
340 #define STATIC_ASSERT(name, cond) \
341 typedef char assert_##name[(cond)? 1: -1]
342 #define ASSERT_UNREACHABLE(why) assert(!sizeof(why))
343 #ifndef _countof
344 #define _countof(xs) (sizeof(xs) / sizeof((xs)[0]))
345 #endif
346
347 #if BT_LOG_INSTRUMENTED
348 #define INSTRUMENTED_CONST
349 #else
350 #define INSTRUMENTED_CONST const
351 #endif
352
353 #define _PP_PASTE_2(a, b) a ## b
354 #define _PP_CONCAT_2(a, b) _PP_PASTE_2(a, b)
355
356 #define _PP_PASTE_3(a, b, c) a ## b ## c
357 #define _PP_CONCAT_3(a, b, c) _PP_PASTE_3(a, b, c)
358
359 /* Microsoft C preprocessor is a piece of shit. This moron treats __VA_ARGS__
360 * as a single token and requires additional expansion to realize that it's
361 * actually a list. If not for it, there would be no need in this extra
362 * expansion.
363 */
364 #define _PP_ID(x) x
365 #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
366 #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))
367
368 /* There is a more efficient way to implement this, but it requires
369 * working C preprocessor. Unfortunately, Microsoft Visual Studio doesn't
370 * have one.
371 */
372 #define _PP_HEAD__(x, ...) x
373 #define _PP_HEAD_(...) _PP_ID(_PP_HEAD__(__VA_ARGS__, ~))
374 #define _PP_HEAD(xs) _PP_HEAD_ xs
375 #define _PP_TAIL_(x, ...) (__VA_ARGS__)
376 #define _PP_TAIL(xs) _PP_TAIL_ xs
377 #define _PP_UNTUPLE_(...) __VA_ARGS__
378 #define _PP_UNTUPLE(xs) _PP_UNTUPLE_ xs
379
380 /* Apply function macro to each element in tuple. Output is not
381 * enforced to be a tuple.
382 */
383 #define _PP_MAP_1(f, xs) f(_PP_HEAD(xs))
384 #define _PP_MAP_2(f, xs) f(_PP_HEAD(xs)) _PP_MAP_1(f, _PP_TAIL(xs))
385 #define _PP_MAP_3(f, xs) f(_PP_HEAD(xs)) _PP_MAP_2(f, _PP_TAIL(xs))
386 #define _PP_MAP_4(f, xs) f(_PP_HEAD(xs)) _PP_MAP_3(f, _PP_TAIL(xs))
387 #define _PP_MAP_5(f, xs) f(_PP_HEAD(xs)) _PP_MAP_4(f, _PP_TAIL(xs))
388 #define _PP_MAP_6(f, xs) f(_PP_HEAD(xs)) _PP_MAP_5(f, _PP_TAIL(xs))
389 #define _PP_MAP_7(f, xs) f(_PP_HEAD(xs)) _PP_MAP_6(f, _PP_TAIL(xs))
390 #define _PP_MAP_8(f, xs) f(_PP_HEAD(xs)) _PP_MAP_7(f, _PP_TAIL(xs))
391 #define _PP_MAP_9(f, xs) f(_PP_HEAD(xs)) _PP_MAP_8(f, _PP_TAIL(xs))
392 #define _PP_MAP_10(f, xs) f(_PP_HEAD(xs)) _PP_MAP_9(f, _PP_TAIL(xs))
393 #define _PP_MAP_11(f, xs) f(_PP_HEAD(xs)) _PP_MAP_10(f, _PP_TAIL(xs))
394 #define _PP_MAP_12(f, xs) f(_PP_HEAD(xs)) _PP_MAP_11(f, _PP_TAIL(xs))
395 #define _PP_MAP_13(f, xs) f(_PP_HEAD(xs)) _PP_MAP_12(f, _PP_TAIL(xs))
396 #define _PP_MAP_14(f, xs) f(_PP_HEAD(xs)) _PP_MAP_13(f, _PP_TAIL(xs))
397 #define _PP_MAP_15(f, xs) f(_PP_HEAD(xs)) _PP_MAP_14(f, _PP_TAIL(xs))
398 #define _PP_MAP_16(f, xs) f(_PP_HEAD(xs)) _PP_MAP_15(f, _PP_TAIL(xs))
399 #define _PP_MAP_17(f, xs) f(_PP_HEAD(xs)) _PP_MAP_16(f, _PP_TAIL(xs))
400 #define _PP_MAP_18(f, xs) f(_PP_HEAD(xs)) _PP_MAP_17(f, _PP_TAIL(xs))
401 #define _PP_MAP_19(f, xs) f(_PP_HEAD(xs)) _PP_MAP_18(f, _PP_TAIL(xs))
402 #define _PP_MAP_20(f, xs) f(_PP_HEAD(xs)) _PP_MAP_19(f, _PP_TAIL(xs))
403 #define _PP_MAP_21(f, xs) f(_PP_HEAD(xs)) _PP_MAP_20(f, _PP_TAIL(xs))
404 #define _PP_MAP_22(f, xs) f(_PP_HEAD(xs)) _PP_MAP_21(f, _PP_TAIL(xs))
405 #define _PP_MAP_23(f, xs) f(_PP_HEAD(xs)) _PP_MAP_22(f, _PP_TAIL(xs))
406 #define _PP_MAP_24(f, xs) f(_PP_HEAD(xs)) _PP_MAP_23(f, _PP_TAIL(xs))
407 #define _PP_MAP(f, xs) _PP_CONCAT_2(_PP_MAP_, _PP_NARGS xs) (f, xs)
408
409 /* Apply function macro to each element in tuple in reverse order.
410 * Output is not enforced to be a tuple.
411 */
412 #define _PP_RMAP_1(f, xs) f(_PP_HEAD(xs))
413 #define _PP_RMAP_2(f, xs) _PP_RMAP_1(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
414 #define _PP_RMAP_3(f, xs) _PP_RMAP_2(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
415 #define _PP_RMAP_4(f, xs) _PP_RMAP_3(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
416 #define _PP_RMAP_5(f, xs) _PP_RMAP_4(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
417 #define _PP_RMAP_6(f, xs) _PP_RMAP_5(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
418 #define _PP_RMAP_7(f, xs) _PP_RMAP_6(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
419 #define _PP_RMAP_8(f, xs) _PP_RMAP_7(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
420 #define _PP_RMAP_9(f, xs) _PP_RMAP_8(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
421 #define _PP_RMAP_10(f, xs) _PP_RMAP_9(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
422 #define _PP_RMAP_11(f, xs) _PP_RMAP_10(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
423 #define _PP_RMAP_12(f, xs) _PP_RMAP_11(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
424 #define _PP_RMAP_13(f, xs) _PP_RMAP_12(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
425 #define _PP_RMAP_14(f, xs) _PP_RMAP_13(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
426 #define _PP_RMAP_15(f, xs) _PP_RMAP_14(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
427 #define _PP_RMAP_16(f, xs) _PP_RMAP_15(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
428 #define _PP_RMAP_17(f, xs) _PP_RMAP_16(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
429 #define _PP_RMAP_18(f, xs) _PP_RMAP_17(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
430 #define _PP_RMAP_19(f, xs) _PP_RMAP_18(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
431 #define _PP_RMAP_20(f, xs) _PP_RMAP_19(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
432 #define _PP_RMAP_21(f, xs) _PP_RMAP_20(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
433 #define _PP_RMAP_22(f, xs) _PP_RMAP_21(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
434 #define _PP_RMAP_23(f, xs) _PP_RMAP_22(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
435 #define _PP_RMAP_24(f, xs) _PP_RMAP_23(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
436 #define _PP_RMAP(f, xs) _PP_CONCAT_2(_PP_RMAP_, _PP_NARGS xs) (f, xs)
437
438 /* Used to implement _BT_LOG_MESSAGE_FORMAT_CONTAINS() macro. All possible
439 * fields must be mentioned here. Not counting F_INIT() here because it's
440 * somewhat special and is handled spearatly (at least for now).
441 */
442 #define _BT_LOG_MESSAGE_FORMAT_MASK__ (0<<0)
443 #define _BT_LOG_MESSAGE_FORMAT_MASK__YEAR (1<<1)
444 #define _BT_LOG_MESSAGE_FORMAT_MASK__MONTH (1<<2)
445 #define _BT_LOG_MESSAGE_FORMAT_MASK__DAY (1<<3)
446 #define _BT_LOG_MESSAGE_FORMAT_MASK__HOUR (1<<4)
447 #define _BT_LOG_MESSAGE_FORMAT_MASK__MINUTE (1<<5)
448 #define _BT_LOG_MESSAGE_FORMAT_MASK__SECOND (1<<6)
449 #define _BT_LOG_MESSAGE_FORMAT_MASK__MILLISECOND (1<<7)
450 #define _BT_LOG_MESSAGE_FORMAT_MASK__PID (1<<8)
451 #define _BT_LOG_MESSAGE_FORMAT_MASK__TID (1<<9)
452 #define _BT_LOG_MESSAGE_FORMAT_MASK__LEVEL (1<<10)
453 #define _BT_LOG_MESSAGE_FORMAT_MASK__TAG(ps, ts) (1<<11)
454 #define _BT_LOG_MESSAGE_FORMAT_MASK__FUNCTION (1<<12)
455 #define _BT_LOG_MESSAGE_FORMAT_MASK__FILENAME (1<<13)
456 #define _BT_LOG_MESSAGE_FORMAT_MASK__FILELINE (1<<14)
457 #define _BT_LOG_MESSAGE_FORMAT_MASK__S(s) (1<<15)
458 #define _BT_LOG_MESSAGE_FORMAT_MASK__F_INIT(expr) (0<<16)
459 #define _BT_LOG_MESSAGE_FORMAT_MASK__F_UINT(w, v) (1<<17)
460 #define _BT_LOG_MESSAGE_FORMAT_MASK(field) \
461 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_MASK_, _, field)
462
463 /* Logical "or" of masks of fields used in specified format specification.
464 */
465 #define _BT_LOG_MESSAGE_FORMAT_FIELDS(format) \
466 (0 _PP_MAP(| _BT_LOG_MESSAGE_FORMAT_MASK, format))
467
468 /* Expands to expressions that evaluates to true if field is used in
469 * specified format specification. Example:
470 *
471 * #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(F_UINT, BT_LOG_MESSAGE_CTX_FORMAT)
472 * ...
473 * #endif
474 */
475 #define _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, format) \
476 (_BT_LOG_MESSAGE_FORMAT_MASK(field) & _BT_LOG_MESSAGE_FORMAT_FIELDS(format))
477
478 /* Same, but checks all supported format specifications.
479 */
480 #define _BT_LOG_MESSAGE_FORMAT_FIELD_USED(field) \
481 (_BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_CTX_FORMAT) || \
482 _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_TAG_FORMAT) || \
483 _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_SRC_FORMAT))
484
485 #define _BT_LOG_MESSAGE_FORMAT_DATETIME_USED \
486 (_BT_LOG_MESSAGE_FORMAT_CONTAINS(YEAR, BT_LOG_MESSAGE_CTX_FORMAT) || \
487 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MONTH, BT_LOG_MESSAGE_CTX_FORMAT) || \
488 _BT_LOG_MESSAGE_FORMAT_CONTAINS(DAY, BT_LOG_MESSAGE_CTX_FORMAT) || \
489 _BT_LOG_MESSAGE_FORMAT_CONTAINS(HOUR, BT_LOG_MESSAGE_CTX_FORMAT) || \
490 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MINUTE, BT_LOG_MESSAGE_CTX_FORMAT) || \
491 _BT_LOG_MESSAGE_FORMAT_CONTAINS(SECOND, BT_LOG_MESSAGE_CTX_FORMAT) || \
492 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MILLISECOND, BT_LOG_MESSAGE_CTX_FORMAT))
493
494 #if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
495 #pragma warning(disable:4204) /* nonstandard extension used: non-constant aggregate initializer */
496 #define memccpy _memccpy
497 #endif
498
499 #if (defined(_MSC_VER) && !defined(__INTEL_COMPILER)) || \
500 (defined(__MINGW64__) && !defined(__USE_MINGW_ANSI_STDIO))
501 #define vsnprintf(s, sz, fmt, va) fake_vsnprintf(s, sz, fmt, va)
502 static int fake_vsnprintf(char *s, size_t sz, const char *fmt, va_list ap)
503 {
504 const int n = vsnprintf_s(s, sz, _TRUNCATE, fmt, ap);
505 return 0 < n? n: (int)sz + 1; /* no need in _vscprintf() for now */
506 }
507 #if BT_LOG_OPTIMIZE_SIZE
508 #define snprintf(s, sz, ...) fake_snprintf(s, sz, __VA_ARGS__)
509 static int fake_snprintf(char *s, size_t sz, const char *fmt, ...)
510 {
511 va_list va;
512 va_start(va, fmt);
513 const int n = fake_vsnprintf(s, sz, fmt, va);
514 va_end(va);
515 return n;
516 }
517 #endif
518 #endif
519
520 typedef void (*time_cb)(struct tm *const tm, unsigned *const usec);
521 typedef void (*pid_cb)(int *const pid, int *const tid);
522 typedef void (*buffer_cb)(bt_log_message *msg, char *buf);
523
524 typedef struct src_location
525 {
526 const char *const func;
527 const char *const file;
528 const unsigned line;
529 }
530 src_location;
531
532 typedef struct mem_block
533 {
534 const void *const d;
535 const unsigned d_sz;
536 }
537 mem_block;
538
539 static void time_callback(struct tm *const tm, unsigned *const usec);
540 static void pid_callback(int *const pid, int *const tid);
541 static void buffer_callback(bt_log_message *msg, char *buf);
542
543 STATIC_ASSERT(eol_fits_eol_sz, sizeof(BT_LOG_EOL) <= BT_LOG_EOL_SZ);
544 STATIC_ASSERT(eol_sz_greater_than_zero, 0 < BT_LOG_EOL_SZ);
545 STATIC_ASSERT(eol_sz_less_than_buf_sz, BT_LOG_EOL_SZ < BT_LOG_BUF_SZ);
546 static const char c_hex[] = "0123456789abcdef";
547
548 static __thread char logging_buf[4 * 4096];
549
550 static INSTRUMENTED_CONST unsigned g_buf_sz = BT_LOG_BUF_SZ - BT_LOG_EOL_SZ;
551 static INSTRUMENTED_CONST time_cb g_time_cb = time_callback;
552 static INSTRUMENTED_CONST pid_cb g_pid_cb = pid_callback;
553 static INSTRUMENTED_CONST buffer_cb g_buffer_cb = buffer_callback;
554
555 #if BT_LOG_USE_ANDROID_LOG
556 #include <android/log.h>
557
558 static INLINE int android_lvl(const int lvl)
559 {
560 switch (lvl)
561 {
562 case BT_LOG_TRACE:
563 return ANDROID_LOG_VERBOSE;
564 case BT_LOG_DEBUG:
565 return ANDROID_LOG_DEBUG;
566 case BT_LOG_INFO:
567 return ANDROID_LOG_INFO;
568 case BT_LOG_WARNING:
569 return ANDROID_LOG_WARN;
570 case BT_LOG_ERROR:
571 return ANDROID_LOG_ERROR;
572 case BT_LOG_FATAL:
573 return ANDROID_LOG_FATAL;
574 default:
575 ASSERT_UNREACHABLE("Bad log level");
576 return ANDROID_LOG_UNKNOWN;
577 }
578 }
579
580 static void out_android_callback(const bt_log_message *const msg, void *arg)
581 {
582 VAR_UNUSED(arg);
583 *msg->p = 0;
584 const char *tag = msg->p;
585 if (msg->tag_e != msg->tag_b)
586 {
587 tag = msg->tag_b;
588 *msg->tag_e = 0;
589 }
590 __android_log_print(android_lvl(msg->lvl), tag, "%s", msg->msg_b);
591 }
592
593 enum { OUT_ANDROID_MASK = BT_LOG_PUT_STD & ~BT_LOG_PUT_CTX };
594 #define OUT_ANDROID OUT_ANDROID_MASK, 0, out_android_callback
595 #endif
596
597 #if BT_LOG_USE_NSLOG
598 #include <CoreFoundation/CoreFoundation.h>
599 CF_EXPORT void CFLog(int32_t level, CFStringRef format, ...);
600
601 static INLINE int apple_lvl(const int lvl)
602 {
603 switch (lvl)
604 {
605 case BT_LOG_TRACE:
606 return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
607 case BT_LOG_DEBUG:
608 return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
609 case BT_LOG_INFO:
610 return 6; /* ASL_LEVEL_INFO / kCFLogLevelInfo */;
611 case BT_LOG_WARNING:
612 return 4; /* ASL_LEVEL_WARNING / kCFLogLevelWarning */;
613 case BT_LOG_ERROR:
614 return 3; /* ASL_LEVEL_ERR / kCFLogLevelError */;
615 case BT_LOG_FATAL:
616 return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
617 default:
618 ASSERT_UNREACHABLE("Bad log level");
619 return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
620 }
621 }
622
623 static void out_nslog_callback(const bt_log_message *const msg, void *arg)
624 {
625 VAR_UNUSED(arg);
626 *msg->p = 0;
627 CFLog(apple_lvl(msg->lvl), CFSTR("%s"), msg->tag_b);
628 }
629
630 enum { OUT_NSLOG_MASK = BT_LOG_PUT_STD & ~BT_LOG_PUT_CTX };
631 #define OUT_NSLOG OUT_NSLOG_MASK, 0, out_nslog_callback
632 #endif
633
634 #if BT_LOG_USE_DEBUGSTRING
635 #include <windows.h>
636
637 static void out_debugstring_callback(const bt_log_message *const msg, void *arg)
638 {
639 VAR_UNUSED(arg);
640 msg->p[0] = '\n';
641 msg->p[1] = '\0';
642 OutputDebugStringA(msg->buf);
643 }
644
645 enum { OUT_DEBUGSTRING_MASK = BT_LOG_PUT_STD };
646 #define OUT_DEBUGSTRING OUT_DEBUGSTRING_MASK, 0, out_debugstring_callback
647 #endif
648
649 void bt_log_out_stderr_callback(const bt_log_message *const msg, void *arg)
650 {
651 VAR_UNUSED(arg);
652 const size_t eol_len = sizeof(BT_LOG_EOL) - 1;
653 memcpy(msg->p, BT_LOG_EOL, eol_len);
654 #if defined(_WIN32) || defined(_WIN64)
655 /* WriteFile() is atomic for local files opened with FILE_APPEND_DATA and
656 without FILE_WRITE_DATA */
657 WriteFile(GetStdHandle(STD_ERROR_HANDLE), msg->buf,
658 (DWORD)(msg->p - msg->buf + eol_len), 0, 0);
659 #else
660 /* write() is atomic for buffers less than or equal to PIPE_BUF. */
661 RETVAL_UNUSED(write(STDERR_FILENO, msg->buf,
662 (size_t)(msg->p - msg->buf) + eol_len));
663 #endif
664 }
665
666 static const bt_log_output out_stderr = {BT_LOG_OUT_STDERR};
667
668 #if !BT_LOG_EXTERN_TAG_PREFIX
669 BT_LOG_DEFINE_TAG_PREFIX = 0;
670 #endif
671
672 #if !BT_LOG_EXTERN_GLOBAL_FORMAT
673 BT_LOG_DEFINE_GLOBAL_FORMAT = {BT_LOG_MEM_WIDTH};
674 #endif
675
676 #if !BT_LOG_EXTERN_GLOBAL_OUTPUT
677 #if BT_LOG_USE_ANDROID_LOG
678 BT_LOG_DEFINE_GLOBAL_OUTPUT = {OUT_ANDROID};
679 #elif BT_LOG_USE_NSLOG
680 BT_LOG_DEFINE_GLOBAL_OUTPUT = {OUT_NSLOG};
681 #elif BT_LOG_USE_DEBUGSTRING
682 BT_LOG_DEFINE_GLOBAL_OUTPUT = {OUT_DEBUGSTRING};
683 #else
684 BT_LOG_DEFINE_GLOBAL_OUTPUT = {BT_LOG_OUT_STDERR};
685 #endif
686 #endif
687
688 #if !BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
689 BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL = 0;
690 #endif
691
692 const bt_log_spec _bt_log_stderr_spec =
693 {
694 BT_LOG_GLOBAL_FORMAT,
695 &out_stderr,
696 };
697
698 static const bt_log_spec global_spec =
699 {
700 BT_LOG_GLOBAL_FORMAT,
701 BT_LOG_GLOBAL_OUTPUT,
702 };
703
704 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(LEVEL, BT_LOG_MESSAGE_CTX_FORMAT)
705 static char lvl_char(const int lvl)
706 {
707 switch (lvl)
708 {
709 case BT_LOG_TRACE:
710 return 'T';
711 case BT_LOG_DEBUG:
712 return 'D';
713 case BT_LOG_INFO:
714 return 'I';
715 case BT_LOG_WARNING:
716 return 'W';
717 case BT_LOG_ERROR:
718 return 'E';
719 case BT_LOG_FATAL:
720 return 'F';
721 default:
722 ASSERT_UNREACHABLE("Bad log level");
723 return '?';
724 }
725 }
726 #endif
727
728 #define GCCVER_LESS(MAJOR, MINOR, PATCH) \
729 (__GNUC__ < MAJOR || \
730 (__GNUC__ == MAJOR && (__GNUC_MINOR__ < MINOR || \
731 (__GNUC_MINOR__ == MINOR && __GNUC_PATCHLEVEL__ < PATCH))))
732
733 #if !defined(__clang__) && defined(__GNUC__) && GCCVER_LESS(4,7,0)
734 #define __atomic_load_n(vp, model) __sync_fetch_and_add(vp, 0)
735 #define __atomic_fetch_add(vp, n, model) __sync_fetch_and_add(vp, n)
736 #define __atomic_sub_fetch(vp, n, model) __sync_sub_and_fetch(vp, n)
737 #define __atomic_or_fetch(vp, n, model) __sync_or_and_fetch(vp, n)
738 #define __atomic_and_fetch(vp, n, model) __sync_and_and_fetch(vp, n)
739 /* Note: will not store old value of *vp in *ep (non-standard behaviour) */
740 #define __atomic_compare_exchange_n(vp, ep, d, weak, smodel, fmodel) \
741 __sync_bool_compare_and_swap(vp, *(ep), d)
742 #endif
743
744 #if !BT_LOG_OPTIMIZE_SIZE && !defined(_WIN32) && !defined(_WIN64)
745 #define TCACHE
746 #define TCACHE_STALE (0x40000000)
747 #define TCACHE_FLUID (0x40000000 | 0x80000000)
748 static unsigned g_tcache_mode = TCACHE_STALE;
749 static struct timeval g_tcache_tv = {0, 0};
750 static struct tm g_tcache_tm = {0};
751
752 static INLINE int tcache_get(const struct timeval *const tv, struct tm *const tm)
753 {
754 unsigned mode;
755 mode = __atomic_load_n(&g_tcache_mode, __ATOMIC_RELAXED);
756 if (0 == (mode & TCACHE_FLUID))
757 {
758 mode = __atomic_fetch_add(&g_tcache_mode, 1, __ATOMIC_ACQUIRE);
759 if (0 == (mode & TCACHE_FLUID))
760 {
761 if (g_tcache_tv.tv_sec == tv->tv_sec)
762 {
763 *tm = g_tcache_tm;
764 __atomic_sub_fetch(&g_tcache_mode, 1, __ATOMIC_RELEASE);
765 return !0;
766 }
767 __atomic_or_fetch(&g_tcache_mode, TCACHE_STALE, __ATOMIC_RELAXED);
768 }
769 __atomic_sub_fetch(&g_tcache_mode, 1, __ATOMIC_RELEASE);
770 }
771 return 0;
772 }
773
774 static INLINE void tcache_set(const struct timeval *const tv, struct tm *const tm)
775 {
776 unsigned stale = TCACHE_STALE;
777 if (__atomic_compare_exchange_n(&g_tcache_mode, &stale, TCACHE_FLUID,
778 0, __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
779 {
780 g_tcache_tv = *tv;
781 g_tcache_tm = *tm;
782 __atomic_and_fetch(&g_tcache_mode, ~TCACHE_FLUID, __ATOMIC_RELEASE);
783 }
784 }
785 #endif
786
787 static void time_callback(struct tm *const tm, unsigned *const msec)
788 {
789 #if !_BT_LOG_MESSAGE_FORMAT_DATETIME_USED
790 VAR_UNUSED(tm);
791 VAR_UNUSED(msec);
792 #else
793 #if defined(_WIN32) || defined(_WIN64)
794 SYSTEMTIME st;
795 GetLocalTime(&st);
796 tm->tm_year = st.wYear;
797 tm->tm_mon = st.wMonth;
798 tm->tm_mday = st.wDay;
799 tm->tm_wday = st.wDayOfWeek;
800 tm->tm_hour = st.wHour;
801 tm->tm_min = st.wMinute;
802 tm->tm_sec = st.wSecond;
803 *msec = st.wMilliseconds;
804 #else
805 struct timeval tv;
806 gettimeofday(&tv, 0);
807 #ifndef TCACHE
808 localtime_r(&tv.tv_sec, tm);
809 #else
810 if (!tcache_get(&tv, tm))
811 {
812 localtime_r(&tv.tv_sec, tm);
813 tcache_set(&tv, tm);
814 }
815 #endif
816 *msec = (unsigned)tv.tv_usec / 1000;
817 #endif
818 #endif
819 }
820
821 static void pid_callback(int *const pid, int *const tid)
822 {
823 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(PID, BT_LOG_MESSAGE_CTX_FORMAT)
824 VAR_UNUSED(pid);
825 #else
826 #if defined(_WIN32) || defined(_WIN64)
827 *pid = GetCurrentProcessId();
828 #else
829 *pid = getpid();
830 #endif
831 #endif
832
833 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(TID, BT_LOG_MESSAGE_CTX_FORMAT)
834 VAR_UNUSED(tid);
835 #else
836 #if defined(_WIN32) || defined(_WIN64)
837 *tid = GetCurrentThreadId();
838 #elif defined(__CYGWIN__)
839 pthread_t thr = pthread_self();
840 *tid = (int)pthread_getsequence_np(&thr);
841 #elif defined(__sun__)
842 *tid = (int)pthread_self();
843 #elif defined(__ANDROID__)
844 *tid = gettid();
845 #elif defined(__linux__)
846 *tid = syscall(SYS_gettid);
847 #elif defined(__APPLE__) && defined(__MACH__)
848 *tid = (int)pthread_mach_thread_np(pthread_self());
849 #elif defined(__GNU__)
850 mach_port_t mach_port = mach_thread_self();
851 mach_port_deallocate(mach_task_self(), mach_port);
852 *tid = (int)mach_port;
853 #else
854 #define Platform not supported
855 #endif
856 #endif
857 }
858
859 static void buffer_callback(bt_log_message *msg, char *buf)
860 {
861 msg->e = (msg->p = msg->buf = buf) + g_buf_sz;
862 }
863
864 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(FUNCTION, BT_LOG_MESSAGE_SRC_FORMAT)
865 static const char *funcname(const char *func)
866 {
867 return func? func: "";
868 }
869 #endif
870
871 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(FILENAME, BT_LOG_MESSAGE_SRC_FORMAT)
872 static const char *filename(const char *file)
873 {
874 const char *f = file;
875 for (const char *p = file; 0 != *p; ++p)
876 {
877 if ('/' == *p || '\\' == *p)
878 {
879 f = p + 1;
880 }
881 }
882 return f;
883 }
884 #endif
885
886 static INLINE size_t nprintf_size(bt_log_message *const msg)
887 {
888 // *nprintf() always puts 0 in the end when input buffer is not empty. This
889 // 0 is not desired because its presence sets (ctx->p) to (ctx->e - 1) which
890 // leaves space for one more character. Some put_xxx() functions don't use
891 // *nprintf() and could use that last character. In that case log line will
892 // have multiple (two) half-written parts which is confusing. To workaround
893 // that we allow *nprintf() to write its 0 in the eol area (which is always
894 // not empty).
895 return (size_t)(msg->e - msg->p + 1);
896 }
897
898 static INLINE void put_nprintf(bt_log_message *const msg, const int n)
899 {
900 if (0 < n)
901 {
902 msg->p = n < msg->e - msg->p? msg->p + n: msg->e;
903 }
904 }
905
906 static INLINE char *put_padding_r(const unsigned w, const char wc,
907 char *p, char *e)
908 {
909 for (char *const b = e - w; b < p; *--p = wc) {}
910 return p;
911 }
912
913 static char *put_integer_r(unsigned v, const int sign,
914 const unsigned w, const char wc, char *const e)
915 {
916 static const char _signs[] = {'-', '0', '+'};
917 const char *const signs = _signs + 1;
918 char *p = e;
919 do { *--p = '0' + v % 10; } while (0 != (v /= 10));
920 if (0 == sign) return put_padding_r(w, wc, p, e);
921 if ('0' != wc)
922 {
923 *--p = signs[sign];
924 return put_padding_r(w, wc, p, e);
925 }
926 p = put_padding_r(w, wc, p, e + 1);
927 *--p = signs[sign];
928 return p;
929 }
930
931 static INLINE char *put_uint_r(const unsigned v, const unsigned w, const char wc,
932 char *const e)
933 {
934 return put_integer_r(v, 0, w, wc, e);
935 }
936
937 static INLINE char *put_int_r(const int v, const unsigned w, const char wc,
938 char *const e)
939 {
940 return 0 <= v? put_integer_r((unsigned)v, 0, w, wc, e)
941 : put_integer_r((unsigned)-v, -1, w, wc, e);
942 }
943
944 static INLINE char *put_stringn(const char *const s_p, const char *const s_e,
945 char *const p, char *const e)
946 {
947 const ptrdiff_t m = e - p;
948 ptrdiff_t n = s_e - s_p;
949 if (n > m)
950 {
951 n = m;
952 }
953 memcpy(p, s_p, n);
954 return p + n;
955 }
956
957 static INLINE char *put_string(const char *s, char *p, char *const e)
958 {
959 const ptrdiff_t n = e - p;
960 char *const c = (char *)memccpy(p, s, '\0', n);
961 return 0 != c? c - 1: e;
962 }
963
964 static INLINE char *put_uint(unsigned v, const unsigned w, const char wc,
965 char *const p, char *const e)
966 {
967 char buf[16];
968 char *const se = buf + _countof(buf);
969 char *sp = put_uint_r(v, w, wc, se);
970 return put_stringn(sp, se, p, e);
971 }
972
973 #define PUT_CSTR_R(p, STR) \
974 do { \
975 for (unsigned i = sizeof(STR) - 1; 0 < i--;) { \
976 *--(p) = (STR)[i]; \
977 } \
978 } _BT_LOG_ONCE
979
980 #define PUT_CSTR_CHECKED(p, e, STR) \
981 do { \
982 for (unsigned i = 0; (e) > (p) && (sizeof(STR) - 1) > i; ++i) { \
983 *(p)++ = (STR)[i]; \
984 } \
985 } _BT_LOG_ONCE
986
987 /* F_INIT field support.
988 */
989 #define _BT_LOG_MESSAGE_FORMAT_INIT__
990 #define _BT_LOG_MESSAGE_FORMAT_INIT__YEAR
991 #define _BT_LOG_MESSAGE_FORMAT_INIT__MONTH
992 #define _BT_LOG_MESSAGE_FORMAT_INIT__DAY
993 #define _BT_LOG_MESSAGE_FORMAT_INIT__HOUR
994 #define _BT_LOG_MESSAGE_FORMAT_INIT__MINUTE
995 #define _BT_LOG_MESSAGE_FORMAT_INIT__SECOND
996 #define _BT_LOG_MESSAGE_FORMAT_INIT__MILLISECOND
997 #define _BT_LOG_MESSAGE_FORMAT_INIT__PID
998 #define _BT_LOG_MESSAGE_FORMAT_INIT__TID
999 #define _BT_LOG_MESSAGE_FORMAT_INIT__LEVEL
1000 #define _BT_LOG_MESSAGE_FORMAT_INIT__TAG(ps, ts)
1001 #define _BT_LOG_MESSAGE_FORMAT_INIT__FUNCTION
1002 #define _BT_LOG_MESSAGE_FORMAT_INIT__FILENAME
1003 #define _BT_LOG_MESSAGE_FORMAT_INIT__FILELINE
1004 #define _BT_LOG_MESSAGE_FORMAT_INIT__S(s)
1005 #define _BT_LOG_MESSAGE_FORMAT_INIT__F_INIT(expr) _PP_UNTUPLE(expr);
1006 #define _BT_LOG_MESSAGE_FORMAT_INIT__F_UINT(w, v)
1007 #define _BT_LOG_MESSAGE_FORMAT_INIT(field) \
1008 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_INIT_, _, field)
1009
1010 /* Implements generation of printf-like format string for log message
1011 * format specification.
1012 */
1013 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__ ""
1014 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__YEAR "%04u"
1015 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MONTH "%02u"
1016 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__DAY "%02u"
1017 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__HOUR "%02u"
1018 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MINUTE "%02u"
1019 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__SECOND "%02u"
1020 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MILLISECOND "%03u"
1021 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__PID "%5i"
1022 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__TID "%5i"
1023 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__LEVEL "%c"
1024 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__TAG UNDEFINED
1025 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FUNCTION "%s"
1026 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FILENAME "%s"
1027 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FILELINE "%u"
1028 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__S(s) s
1029 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__F_INIT(expr) ""
1030 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__F_UINT(w, v) "%" #w "u"
1031 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT(field) \
1032 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT_, _, field)
1033
1034 /* Implements generation of printf-like format parameters for log message
1035 * format specification.
1036 */
1037 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__
1038 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__YEAR ,(unsigned)(tm.tm_year + 1900)
1039 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MONTH ,(unsigned)(tm.tm_mon + 1)
1040 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__DAY ,(unsigned)tm.tm_mday
1041 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__HOUR ,(unsigned)tm.tm_hour
1042 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MINUTE ,(unsigned)tm.tm_min
1043 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__SECOND ,(unsigned)tm.tm_sec
1044 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MILLISECOND ,(unsigned)msec
1045 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__PID ,pid
1046 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__TID ,tid
1047 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__LEVEL ,(char)lvl_char(msg->lvl)
1048 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__TAG UNDEFINED
1049 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FUNCTION ,funcname(src->func)
1050 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FILENAME ,filename(src->file)
1051 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FILELINE ,src->line
1052 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__S(s)
1053 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__F_INIT(expr)
1054 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__F_UINT(w, v) ,v
1055 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL(field) \
1056 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL_, _, field)
1057
1058 /* Implements generation of put_xxx_t statements for log message specification.
1059 */
1060 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__
1061 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__YEAR p = put_uint_r(tm.tm_year + 1900, 4, '0', p);
1062 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MONTH p = put_uint_r((unsigned)tm.tm_mon + 1, 2, '0', p);
1063 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__DAY p = put_uint_r((unsigned)tm.tm_mday, 2, '0', p);
1064 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__HOUR p = put_uint_r((unsigned)tm.tm_hour, 2, '0', p);
1065 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MINUTE p = put_uint_r((unsigned)tm.tm_min, 2, '0', p);
1066 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__SECOND p = put_uint_r((unsigned)tm.tm_sec, 2, '0', p);
1067 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MILLISECOND p = put_uint_r(msec, 3, '0', p);
1068 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__PID p = put_int_r(pid, 5, ' ', p);
1069 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__TID p = put_int_r(tid, 5, ' ', p);
1070 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__LEVEL *--p = lvl_char(msg->lvl);
1071 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__TAG UNDEFINED
1072 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FUNCTION UNDEFINED
1073 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FILENAME UNDEFINED
1074 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FILELINE UNDEFINED
1075 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__S(s) PUT_CSTR_R(p, s);
1076 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__F_INIT(expr)
1077 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__F_UINT(w, v) p = put_uint_r(v, w, ' ', p);
1078 #define _BT_LOG_MESSAGE_FORMAT_PUT_R(field) \
1079 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PUT_R_, _, field)
1080
1081 static void put_ctx(bt_log_message *const msg)
1082 {
1083 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT, BT_LOG_MESSAGE_CTX_FORMAT)
1084 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_CTX_FORMAT)
1085 VAR_UNUSED(msg);
1086 #else
1087 #if _BT_LOG_MESSAGE_FORMAT_DATETIME_USED
1088 struct tm tm;
1089 unsigned msec;
1090 g_time_cb(&tm, &msec);
1091 #endif
1092 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(PID, BT_LOG_MESSAGE_CTX_FORMAT) || \
1093 _BT_LOG_MESSAGE_FORMAT_CONTAINS(TID, BT_LOG_MESSAGE_CTX_FORMAT)
1094 int pid, tid;
1095 g_pid_cb(&pid, &tid);
1096 #endif
1097
1098 #if BT_LOG_OPTIMIZE_SIZE
1099 int n;
1100 n = snprintf(msg->p, nprintf_size(msg),
1101 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT, BT_LOG_MESSAGE_CTX_FORMAT)
1102 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL, BT_LOG_MESSAGE_CTX_FORMAT));
1103 put_nprintf(msg, n);
1104 #else
1105 char buf[64];
1106 char *const e = buf + sizeof(buf);
1107 char *p = e;
1108 _PP_RMAP(_BT_LOG_MESSAGE_FORMAT_PUT_R, BT_LOG_MESSAGE_CTX_FORMAT)
1109 msg->p = put_stringn(p, e, msg->p, msg->e);
1110 #endif
1111 #endif
1112 }
1113
1114 #define PUT_TAG(msg, tag, prefix_delim, tag_delim) \
1115 do { \
1116 const char *ch; \
1117 msg->tag_b = msg->p; \
1118 if (0 != (ch = _bt_log_tag_prefix)) { \
1119 for (;msg->e != msg->p && 0 != (*msg->p = *ch); ++msg->p, ++ch) {} \
1120 } \
1121 if (0 != (ch = tag) && 0 != tag[0]) { \
1122 if (msg->tag_b != msg->p) { \
1123 PUT_CSTR_CHECKED(msg->p, msg->e, prefix_delim); \
1124 } \
1125 for (;msg->e != msg->p && 0 != (*msg->p = *ch); ++msg->p, ++ch) {} \
1126 } \
1127 msg->tag_e = msg->p; \
1128 if (msg->tag_b != msg->p) { \
1129 PUT_CSTR_CHECKED(msg->p, msg->e, tag_delim); \
1130 } \
1131 } _BT_LOG_ONCE
1132
1133 /* Implements simple put statements for log message specification.
1134 */
1135 #define _BT_LOG_MESSAGE_FORMAT_PUT__
1136 #define _BT_LOG_MESSAGE_FORMAT_PUT__YEAR UNDEFINED
1137 #define _BT_LOG_MESSAGE_FORMAT_PUT__MONTH UNDEFINED
1138 #define _BT_LOG_MESSAGE_FORMAT_PUT__DAY UNDEFINED
1139 #define _BT_LOG_MESSAGE_FORMAT_PUT__HOUR UNDEFINED
1140 #define _BT_LOG_MESSAGE_FORMAT_PUT__MINUTE UNDEFINED
1141 #define _BT_LOG_MESSAGE_FORMAT_PUT__SECOND UNDEFINED
1142 #define _BT_LOG_MESSAGE_FORMAT_PUT__MILLISECOND UNDEFINED
1143 #define _BT_LOG_MESSAGE_FORMAT_PUT__PID UNDEFINED
1144 #define _BT_LOG_MESSAGE_FORMAT_PUT__TID UNDEFINED
1145 #define _BT_LOG_MESSAGE_FORMAT_PUT__LEVEL UNDEFINED
1146 #define _BT_LOG_MESSAGE_FORMAT_PUT__TAG(pd, td) PUT_TAG(msg, tag, pd, td);
1147 #define _BT_LOG_MESSAGE_FORMAT_PUT__FUNCTION msg->p = put_string(funcname(src->func), msg->p, msg->e);
1148 #define _BT_LOG_MESSAGE_FORMAT_PUT__FILENAME msg->p = put_string(filename(src->file), msg->p, msg->e);
1149 #define _BT_LOG_MESSAGE_FORMAT_PUT__FILELINE msg->p = put_uint(src->line, 0, '\0', msg->p, msg->e);
1150 #define _BT_LOG_MESSAGE_FORMAT_PUT__S(s) PUT_CSTR_CHECKED(msg->p, msg->e, s);
1151 #define _BT_LOG_MESSAGE_FORMAT_PUT__F_INIT(expr)
1152 #define _BT_LOG_MESSAGE_FORMAT_PUT__F_UINT(w, v) msg->p = put_uint(v, w, ' ', msg->p, msg->e);
1153 #define _BT_LOG_MESSAGE_FORMAT_PUT(field) \
1154 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PUT_, _, field)
1155
1156 static void put_tag(bt_log_message *const msg, const char *const tag)
1157 {
1158 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT, BT_LOG_MESSAGE_TAG_FORMAT)
1159
1160 /*
1161 * This generates a -Wundef warning. The issue was reported upstream:
1162 *
1163 * https://github.com/wonder-mice/zf_log/issues/40
1164 *
1165 * but there's not much we can do here, so just silence it.
1166 */
1167 #pragma GCC diagnostic push
1168 #pragma GCC diagnostic ignored "-Wundef"
1169 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(TAG, BT_LOG_MESSAGE_TAG_FORMAT)
1170 VAR_UNUSED(tag);
1171 #endif
1172 #pragma GCC diagnostic pop
1173
1174 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_TAG_FORMAT)
1175 VAR_UNUSED(msg);
1176 #else
1177 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PUT, BT_LOG_MESSAGE_TAG_FORMAT)
1178 #endif
1179 }
1180
1181 static void put_src(bt_log_message *const msg, const src_location *const src)
1182 {
1183 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT, BT_LOG_MESSAGE_SRC_FORMAT)
1184 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FUNCTION, BT_LOG_MESSAGE_SRC_FORMAT) && \
1185 !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FILENAME, BT_LOG_MESSAGE_SRC_FORMAT) && \
1186 !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FILELINE, BT_LOG_MESSAGE_SRC_FORMAT)
1187 VAR_UNUSED(src);
1188 #endif
1189 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_SRC_FORMAT)
1190 VAR_UNUSED(msg);
1191 #else
1192 #if BT_LOG_OPTIMIZE_SIZE
1193 int n;
1194 n = snprintf(msg->p, nprintf_size(msg),
1195 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT, BT_LOG_MESSAGE_SRC_FORMAT)
1196 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL, BT_LOG_MESSAGE_SRC_FORMAT));
1197 put_nprintf(msg, n);
1198 #else
1199 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PUT, BT_LOG_MESSAGE_SRC_FORMAT)
1200 #endif
1201 #endif
1202 }
1203
1204 static _BT_LOG_PRINTFLIKE(2, 0)
1205 void put_msg(bt_log_message *const msg,
1206 const char *const fmt, va_list va)
1207 {
1208 int n;
1209 msg->msg_b = msg->p;
1210 n = vsnprintf(msg->p, nprintf_size(msg), fmt, va);
1211 put_nprintf(msg, n);
1212 }
1213
1214 static void output_mem(const bt_log_spec *log, bt_log_message *const msg,
1215 const mem_block *const mem)
1216 {
1217 if (0 == mem->d || 0 == mem->d_sz)
1218 {
1219 return;
1220 }
1221 const unsigned char *mem_p = (const unsigned char *)mem->d;
1222 const unsigned char *const mem_e = mem_p + mem->d_sz;
1223 const unsigned char *mem_cut;
1224 const ptrdiff_t mem_width = (ptrdiff_t)log->format->mem_width;
1225 char *const hex_b = msg->msg_b;
1226 char *const ascii_b = hex_b + 2 * mem_width + 2;
1227 char *const ascii_e = ascii_b + mem_width;
1228 if (msg->e < ascii_e)
1229 {
1230 return;
1231 }
1232 while (mem_p != mem_e)
1233 {
1234 char *hex = hex_b;
1235 char *ascii = ascii_b;
1236 for (mem_cut = mem_width < mem_e - mem_p? mem_p + mem_width: mem_e;
1237 mem_cut != mem_p; ++mem_p)
1238 {
1239 const unsigned char ch = *mem_p;
1240 *hex++ = c_hex[(0xf0 & ch) >> 4];
1241 *hex++ = c_hex[(0x0f & ch)];
1242 *ascii++ = isprint(ch)? (char)ch: '?';
1243 }
1244 while (hex != ascii_b)
1245 {
1246 *hex++ = ' ';
1247 }
1248 msg->p = ascii;
1249 log->output->callback(msg, log->output->arg);
1250 }
1251 }
1252
1253 void bt_log_set_tag_prefix(const char *const prefix)
1254 {
1255 _bt_log_tag_prefix = prefix;
1256 }
1257
1258 void bt_log_set_mem_width(const unsigned w)
1259 {
1260 _bt_log_global_format.mem_width = w;
1261 }
1262
1263 void bt_log_set_output_level(const int lvl)
1264 {
1265 _bt_log_global_output_lvl = lvl;
1266 }
1267
1268 void bt_log_set_output_v(const unsigned mask, void *const arg,
1269 const bt_log_output_cb callback)
1270 {
1271 _bt_log_global_output.mask = mask;
1272 _bt_log_global_output.arg = arg;
1273 _bt_log_global_output.callback = callback;
1274 }
1275
1276 static _BT_LOG_PRINTFLIKE(6, 0)
1277 void _bt_log_write_imp(
1278 const bt_log_spec *log,
1279 const src_location *const src, const mem_block *const mem,
1280 const int lvl, const char *const tag, const char *const fmt, va_list va)
1281 {
1282 bt_log_message msg;
1283 char *buf = logging_buf;
1284 const unsigned mask = log->output->mask;
1285 msg.lvl = lvl;
1286 msg.tag = tag;
1287 g_buffer_cb(&msg, buf);
1288 const char *rst_color_p = bt_common_color_reset();
1289 const char *rst_color_e = rst_color_p + strlen(rst_color_p);
1290 const char *color_p = "";
1291 const char *color_e = color_p;
1292
1293 switch (lvl) {
1294 case BT_LOG_INFO:
1295 color_p = bt_common_color_fg_blue();
1296 color_e = color_p + strlen(color_p);
1297 break;
1298 case BT_LOG_WARNING:
1299 color_p = bt_common_color_fg_yellow();
1300 color_e = color_p + strlen(color_p);
1301 break;
1302 case BT_LOG_ERROR:
1303 case BT_LOG_FATAL:
1304 color_p = bt_common_color_fg_red();
1305 color_e = color_p + strlen(color_p);
1306 break;
1307 default:
1308 break;
1309 }
1310
1311 msg.p = put_stringn(color_p, color_e, msg.p, msg.e);
1312
1313 if (BT_LOG_PUT_CTX & mask)
1314 {
1315 put_ctx(&msg);
1316 }
1317 if (BT_LOG_PUT_TAG & mask)
1318 {
1319 put_tag(&msg, tag);
1320 }
1321 if (0 != src && BT_LOG_PUT_SRC & mask)
1322 {
1323 put_src(&msg, src);
1324 }
1325 if (BT_LOG_PUT_MSG & mask)
1326 {
1327 put_msg(&msg, fmt, va);
1328 }
1329 msg.p = put_stringn(rst_color_p, rst_color_e, msg.p, msg.e);
1330 log->output->callback(&msg, log->output->arg);
1331 if (0 != mem && BT_LOG_PUT_MSG & mask)
1332 {
1333 output_mem(log, &msg, mem);
1334 }
1335 }
1336
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 void _bt_log_write_aux_d(
1350 const char *const func, const char *const file, const unsigned line,
1351 const bt_log_spec *const log, const int lvl, const char *const tag,
1352 const char *const fmt, ...)
1353 {
1354 const src_location src = {func, file, line};
1355 va_list va;
1356 va_start(va, fmt);
1357 _bt_log_write_imp(log, &src, 0, lvl, tag, fmt, va);
1358 va_end(va);
1359 }
1360
1361 void _bt_log_write(const int lvl, const char *const tag,
1362 const char *const fmt, ...)
1363 {
1364 va_list va;
1365 va_start(va, fmt);
1366 _bt_log_write_imp(&global_spec, 0, 0, lvl, tag, fmt, va);
1367 va_end(va);
1368 }
1369
1370 void _bt_log_write_aux(
1371 const bt_log_spec *const log, const int lvl, const char *const tag,
1372 const char *const fmt, ...)
1373 {
1374 va_list va;
1375 va_start(va, fmt);
1376 _bt_log_write_imp(log, 0, 0, lvl, tag, fmt, va);
1377 va_end(va);
1378 }
1379
1380 void _bt_log_write_mem_d(
1381 const char *const func, const char *const file, const unsigned line,
1382 const int lvl, const char *const tag,
1383 const void *const d, const unsigned d_sz,
1384 const char *const fmt, ...)
1385 {
1386 const src_location src = {func, file, line};
1387 const mem_block mem = {d, d_sz};
1388 va_list va;
1389 va_start(va, fmt);
1390 _bt_log_write_imp(&global_spec, &src, &mem, lvl, tag, fmt, va);
1391 va_end(va);
1392 }
1393
1394 void _bt_log_write_mem_aux_d(
1395 const char *const func, const char *const file, const unsigned line,
1396 const bt_log_spec *const log, const int lvl, const char *const tag,
1397 const void *const d, const unsigned d_sz,
1398 const char *const fmt, ...)
1399 {
1400 const src_location src = {func, file, line};
1401 const mem_block mem = {d, d_sz};
1402 va_list va;
1403 va_start(va, fmt);
1404 _bt_log_write_imp(log, &src, &mem, lvl, tag, fmt, va);
1405 va_end(va);
1406 }
1407
1408 void _bt_log_write_mem(const int lvl, const char *const tag,
1409 const void *const d, const unsigned d_sz,
1410 const char *const fmt, ...)
1411 {
1412 const mem_block mem = {d, d_sz};
1413 va_list va;
1414 va_start(va, fmt);
1415 _bt_log_write_imp(&global_spec, 0, &mem, lvl, tag, fmt, va);
1416 va_end(va);
1417 }
1418
1419 void _bt_log_write_mem_aux(
1420 const bt_log_spec *const log, const int lvl, const char *const tag,
1421 const void *const d, const unsigned d_sz,
1422 const char *const fmt, ...)
1423 {
1424 const mem_block mem = {d, d_sz};
1425 va_list va;
1426 va_start(va, fmt);
1427 _bt_log_write_imp(log, 0, &mem, lvl, tag, fmt, va);
1428 va_end(va);
1429 }
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