2 * This is zf_log.c, modified with Babeltrace prefixes.
3 * See <https://github.com/wonder-mice/zf_log/>.
7 #include <babeltrace/babeltrace-internal.h>
9 /* When defined, Android log (android/log.h) will be used by default instead of
10 * stderr (ignored on non-Android platforms). Date, time, pid and tid (context)
11 * will be provided by Android log. Android log features will be used to output
14 #ifdef BT_LOG_USE_ANDROID_LOG
15 #undef BT_LOG_USE_ANDROID_LOG
16 #if defined(__ANDROID__)
17 #define BT_LOG_USE_ANDROID_LOG 1
19 #define BT_LOG_USE_ANDROID_LOG 0
22 #define BT_LOG_USE_ANDROID_LOG 0
24 /* When defined, NSLog (uses Apple System Log) will be used instead of stderr
25 * (ignored on non-Apple platforms). Date, time, pid and tid (context) will be
26 * provided by NSLog. Curiously, doesn't use NSLog() directly, but piggybacks on
27 * non-public CFLog() function. Both use Apple System Log internally, but it's
28 * easier to call CFLog() from C than NSLog(). Current implementation doesn't
29 * support "%@" format specifier.
31 #ifdef BT_LOG_USE_NSLOG
32 #undef BT_LOG_USE_NSLOG
33 #if defined(__APPLE__) && defined(__MACH__)
34 #define BT_LOG_USE_NSLOG 1
36 #define BT_LOG_USE_NSLOG 0
39 #define BT_LOG_USE_NSLOG 0
41 /* When defined, OutputDebugString() will be used instead of stderr (ignored on
42 * non-Windows platforms). Uses OutputDebugStringA() variant and feeds it with
45 #ifdef BT_LOG_USE_DEBUGSTRING
46 #undef BT_LOG_USE_DEBUGSTRING
47 #if defined(_WIN32) || defined(_WIN64)
48 #define BT_LOG_USE_DEBUGSTRING 1
50 #define BT_LOG_USE_DEBUGSTRING 0
53 #define BT_LOG_USE_DEBUGSTRING 0
55 /* When defined, bt_log library will not contain definition of tag prefix
56 * variable. In that case it must be defined elsewhere using
57 * BT_LOG_DEFINE_TAG_PREFIX macro, for example:
59 * BT_LOG_DEFINE_TAG_PREFIX = "ProcessName";
61 * This allows to specify custom value for static initialization and avoid
62 * overhead of setting this value in runtime.
64 #ifdef BT_LOG_EXTERN_TAG_PREFIX
65 #undef BT_LOG_EXTERN_TAG_PREFIX
66 #define BT_LOG_EXTERN_TAG_PREFIX 1
68 #define BT_LOG_EXTERN_TAG_PREFIX 0
70 /* When defined, bt_log library will not contain definition of global format
71 * variable. In that case it must be defined elsewhere using
72 * BT_LOG_DEFINE_GLOBAL_FORMAT macro, for example:
74 * BT_LOG_DEFINE_GLOBAL_FORMAT = {MEM_WIDTH};
76 * This allows to specify custom value for static initialization and avoid
77 * overhead of setting this value in runtime.
79 #ifdef BT_LOG_EXTERN_GLOBAL_FORMAT
80 #undef BT_LOG_EXTERN_GLOBAL_FORMAT
81 #define BT_LOG_EXTERN_GLOBAL_FORMAT 1
83 #define BT_LOG_EXTERN_GLOBAL_FORMAT 0
85 /* When defined, bt_log library will not contain definition of global output
86 * variable. In that case it must be defined elsewhere using
87 * BT_LOG_DEFINE_GLOBAL_OUTPUT macro, for example:
89 * BT_LOG_DEFINE_GLOBAL_OUTPUT = {BT_LOG_PUT_STD, custom_output_callback};
91 * This allows to specify custom value for static initialization and avoid
92 * overhead of setting this value in runtime.
94 #ifdef BT_LOG_EXTERN_GLOBAL_OUTPUT
95 #undef BT_LOG_EXTERN_GLOBAL_OUTPUT
96 #define BT_LOG_EXTERN_GLOBAL_OUTPUT 1
98 #define BT_LOG_EXTERN_GLOBAL_OUTPUT 0
100 /* When defined, bt_log library will not contain definition of global output
101 * level variable. In that case it must be defined elsewhere using
102 * BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL macro, for example:
104 * BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL = BT_LOG_WARN;
106 * This allows to specify custom value for static initialization and avoid
107 * overhead of setting this value in runtime.
109 #ifdef BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
110 #undef BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
111 #define BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL 1
113 #define BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL 0
115 /* When defined, implementation will prefer smaller code size over speed.
116 * Very rough estimate is that code will be up to 2x smaller and up to 2x
117 * slower. Disabled by default.
119 #ifdef BT_LOG_OPTIMIZE_SIZE
120 #undef BT_LOG_OPTIMIZE_SIZE
121 #define BT_LOG_OPTIMIZE_SIZE 1
123 #define BT_LOG_OPTIMIZE_SIZE 0
125 /* Size of the log line buffer. The buffer is allocated on stack. It limits
126 * maximum length of a log line.
128 #ifndef BT_LOG_BUF_SZ
129 #define BT_LOG_BUF_SZ 512
131 /* Default number of bytes in one line of memory output. For large values
132 * BT_LOG_BUF_SZ also must be increased.
134 #ifndef BT_LOG_MEM_WIDTH
135 #define BT_LOG_MEM_WIDTH 32
137 /* String to put in the end of each log line (can be empty). Its value used by
138 * stderr output callback. Its size used as a default value for BT_LOG_EOL_SZ.
141 #define BT_LOG_EOL "\n"
143 /* Default delimiter that separates parts of log message. Can NOT contain '%'
146 * Log message format specifications can override (or ignore) this value. For
147 * more details see BT_LOG_MESSAGE_CTX_FORMAT, BT_LOG_MESSAGE_SRC_FORMAT and
148 * BT_LOG_MESSAGE_TAG_FORMAT.
150 #ifndef BT_LOG_DEF_DELIMITER
151 #define BT_LOG_DEF_DELIMITER " "
153 /* Specifies log message context format. Log message context includes date,
154 * time, process id, thread id and message's log level. Custom information can
155 * be added as well. Supported fields: YEAR, MONTH, DAY, HOUR, MINUTE, SECOND,
156 * MILLISECOND, PID, TID, LEVEL, S(str), F_INIT(statements),
157 * F_UINT(width, value).
159 * Must be defined as a tuple, for example:
161 * #define BT_LOG_MESSAGE_CTX_FORMAT (YEAR, S("."), MONTH, S("."), DAY, S(" > "))
163 * In that case, resulting log message will be:
165 * 2016.12.22 > TAG function@filename.c:line Message text
167 * Note, that tag, source location and message text are not impacted by
168 * this setting. See BT_LOG_MESSAGE_TAG_FORMAT and BT_LOG_MESSAGE_SRC_FORMAT.
170 * If message context must be visually separated from the rest of the message,
171 * it must be reflected in context format (notice trailing S(" > ") in the
174 * S(str) adds constant string str. String can NOT contain '%' or '\0'.
176 * F_INIT(statements) adds initialization statement(s) that will be evaluated
177 * once for each log message. All statements are evaluated in specified order.
178 * Several F_INIT() fields can be used in every log message format
179 * specification. Fields, like F_UINT(width, value), are allowed to use results
180 * of initialization statements. If statement introduces variables (or other
181 * names, like structures) they must be prefixed with "f_". Statements must be
182 * enclosed into additional "()". Example:
184 * #define BT_LOG_MESSAGE_CTX_FORMAT \
185 * (F_INIT(( struct rusage f_ru; getrusage(RUSAGE_SELF, &f_ru); )), \
186 * YEAR, S("."), MONTH, S("."), DAY, S(" "), \
187 * F_UINT(5, f_ru.ru_nsignals), \
190 * F_UINT(width, value) adds unsigned integer value extended with up to width
191 * spaces (for alignment purposes). Value can be any expression that evaluates
192 * to unsigned integer. If expression contains non-standard functions, they
193 * must be declared with F_INIT(). Example:
195 * #define BT_LOG_MESSAGE_CTX_FORMAT \
196 * (YEAR, S("."), MONTH, S("."), DAY, S(" "), \
197 * F_INIT(( unsigned tickcount(); )), \
198 * F_UINT(5, tickcount()), \
201 * Other log message format specifications follow same rules, but have a
202 * different set of supported fields.
204 #ifndef BT_LOG_MESSAGE_CTX_FORMAT
205 #define BT_LOG_MESSAGE_CTX_FORMAT \
206 (MONTH, S("-"), DAY, S(BT_LOG_DEF_DELIMITER), \
207 HOUR, S(":"), MINUTE, S(":"), SECOND, S("."), MILLISECOND, S(BT_LOG_DEF_DELIMITER), \
208 PID, S(BT_LOG_DEF_DELIMITER), TID, S(BT_LOG_DEF_DELIMITER), \
209 LEVEL, S(BT_LOG_DEF_DELIMITER))
213 /* Specifies log message tag format. It includes tag prefix and tag. Custom
214 * information can be added as well. Supported fields:
215 * TAG(prefix_delimiter, tag_delimiter), S(str), F_INIT(statements),
216 * F_UINT(width, value).
218 * TAG(prefix_delimiter, tag_delimiter) adds following string to log message:
220 * PREFIX<prefix_delimiter>TAG<tag_delimiter>
222 * Prefix delimiter will be used only when prefix is not empty. Tag delimiter
223 * will be used only when prefixed tag is not empty. Example:
225 * #define BT_LOG_TAG_FORMAT (S("["), TAG(".", ""), S("] "))
227 * See BT_LOG_MESSAGE_CTX_FORMAT for details.
229 #ifndef BT_LOG_MESSAGE_TAG_FORMAT
230 #define BT_LOG_MESSAGE_TAG_FORMAT \
231 (TAG(".", BT_LOG_DEF_DELIMITER))
233 /* Specifies log message source location format. It includes function name,
234 * file name and file line. Custom information can be added as well. Supported
235 * fields: FUNCTION, FILENAME, FILELINE, S(str), F_INIT(statements),
236 * F_UINT(width, value).
238 * See BT_LOG_MESSAGE_CTX_FORMAT for details.
240 #ifndef BT_LOG_MESSAGE_SRC_FORMAT
241 #define BT_LOG_MESSAGE_SRC_FORMAT \
242 (FUNCTION, S("@"), FILENAME, S(":"), FILELINE, S(BT_LOG_DEF_DELIMITER))
244 /* Fields that can be used in log message format specifications (see above).
245 * Mentioning them here explicitly, so we know that nobody else defined them
246 * before us. See BT_LOG_MESSAGE_CTX_FORMAT for details.
251 #define MINUTE MINUTE
252 #define SECOND SECOND
253 #define MILLISECOND MILLISECOND
257 #define TAG(prefix_delim, tag_delim) TAG(prefix_delim, tag_delim)
258 #define FUNCTION FUNCTION
259 #define FILENAME FILENAME
260 #define FILELINE FILELINE
261 #define S(str) S(str)
262 #define F_INIT(statements) F_INIT(statements)
263 #define F_UINT(width, value) F_UINT(width, value)
264 /* Number of bytes to reserve for EOL in the log line buffer (must be >0).
265 * Must be larger than or equal to length of BT_LOG_EOL with terminating null.
267 #ifndef BT_LOG_EOL_SZ
268 #define BT_LOG_EOL_SZ sizeof(BT_LOG_EOL)
270 /* Compile instrumented version of the library to facilitate unit testing.
272 #ifndef BT_LOG_INSTRUMENTED
273 #define BT_LOG_INSTRUMENTED 0
276 #if defined(__linux__)
277 #if !defined(__ANDROID__) && !defined(_GNU_SOURCE)
281 #if defined(__MINGW32__)
282 #ifdef __STRICT_ANSI__
283 #undef __STRICT_ANSI__
294 #include <babeltrace/logging-internal.h>
295 #include <babeltrace/logging.h>
297 #if defined(_WIN32) || defined(_WIN64)
301 #include <sys/time.h>
302 #if defined(__linux__)
303 #include <linux/limits.h>
305 #include <sys/syslimits.h>
309 #if defined(__linux__)
310 #include <sys/prctl.h>
311 #include <sys/types.h>
312 #if !defined(__ANDROID__)
313 #include <sys/syscall.h>
316 #if defined(__MACH__)
320 #define INLINE _BT_LOG_INLINE
321 #define VAR_UNUSED(var) (void)var
322 #define RETVAL_UNUSED(expr) do { while(expr) break; } while(0)
323 #define STATIC_ASSERT(name, cond) \
324 typedef char assert_##name[(cond)? 1: -1]
325 #define ASSERT_UNREACHABLE(why) assert(!sizeof(why))
327 #define _countof(xs) (sizeof(xs) / sizeof((xs)[0]))
330 #if BT_LOG_INSTRUMENTED
331 #define INSTRUMENTED_CONST
333 #define INSTRUMENTED_CONST const
336 #define _PP_PASTE_2(a, b) a ## b
337 #define _PP_CONCAT_2(a, b) _PP_PASTE_2(a, b)
339 #define _PP_PASTE_3(a, b, c) a ## b ## c
340 #define _PP_CONCAT_3(a, b, c) _PP_PASTE_3(a, b, c)
342 /* Microsoft C preprocessor is a piece of shit. This moron treats __VA_ARGS__
343 * as a single token and requires additional expansion to realize that it's
344 * actually a list. If not for it, there would be no need in this extra
348 #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
349 #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))
351 /* There is a more efficient way to implement this, but it requires
352 * working C preprocessor. Unfortunately, Microsoft Visual Studio doesn't
355 #define _PP_HEAD__(x, ...) x
356 #define _PP_HEAD_(...) _PP_ID(_PP_HEAD__(__VA_ARGS__, ~))
357 #define _PP_HEAD(xs) _PP_HEAD_ xs
358 #define _PP_TAIL_(x, ...) (__VA_ARGS__)
359 #define _PP_TAIL(xs) _PP_TAIL_ xs
360 #define _PP_UNTUPLE_(...) __VA_ARGS__
361 #define _PP_UNTUPLE(xs) _PP_UNTUPLE_ xs
363 /* Apply function macro to each element in tuple. Output is not
364 * enforced to be a tuple.
366 #define _PP_MAP_1(f, xs) f(_PP_HEAD(xs))
367 #define _PP_MAP_2(f, xs) f(_PP_HEAD(xs)) _PP_MAP_1(f, _PP_TAIL(xs))
368 #define _PP_MAP_3(f, xs) f(_PP_HEAD(xs)) _PP_MAP_2(f, _PP_TAIL(xs))
369 #define _PP_MAP_4(f, xs) f(_PP_HEAD(xs)) _PP_MAP_3(f, _PP_TAIL(xs))
370 #define _PP_MAP_5(f, xs) f(_PP_HEAD(xs)) _PP_MAP_4(f, _PP_TAIL(xs))
371 #define _PP_MAP_6(f, xs) f(_PP_HEAD(xs)) _PP_MAP_5(f, _PP_TAIL(xs))
372 #define _PP_MAP_7(f, xs) f(_PP_HEAD(xs)) _PP_MAP_6(f, _PP_TAIL(xs))
373 #define _PP_MAP_8(f, xs) f(_PP_HEAD(xs)) _PP_MAP_7(f, _PP_TAIL(xs))
374 #define _PP_MAP_9(f, xs) f(_PP_HEAD(xs)) _PP_MAP_8(f, _PP_TAIL(xs))
375 #define _PP_MAP_10(f, xs) f(_PP_HEAD(xs)) _PP_MAP_9(f, _PP_TAIL(xs))
376 #define _PP_MAP_11(f, xs) f(_PP_HEAD(xs)) _PP_MAP_10(f, _PP_TAIL(xs))
377 #define _PP_MAP_12(f, xs) f(_PP_HEAD(xs)) _PP_MAP_11(f, _PP_TAIL(xs))
378 #define _PP_MAP_13(f, xs) f(_PP_HEAD(xs)) _PP_MAP_12(f, _PP_TAIL(xs))
379 #define _PP_MAP_14(f, xs) f(_PP_HEAD(xs)) _PP_MAP_13(f, _PP_TAIL(xs))
380 #define _PP_MAP_15(f, xs) f(_PP_HEAD(xs)) _PP_MAP_14(f, _PP_TAIL(xs))
381 #define _PP_MAP_16(f, xs) f(_PP_HEAD(xs)) _PP_MAP_15(f, _PP_TAIL(xs))
382 #define _PP_MAP_17(f, xs) f(_PP_HEAD(xs)) _PP_MAP_16(f, _PP_TAIL(xs))
383 #define _PP_MAP_18(f, xs) f(_PP_HEAD(xs)) _PP_MAP_17(f, _PP_TAIL(xs))
384 #define _PP_MAP_19(f, xs) f(_PP_HEAD(xs)) _PP_MAP_18(f, _PP_TAIL(xs))
385 #define _PP_MAP_20(f, xs) f(_PP_HEAD(xs)) _PP_MAP_19(f, _PP_TAIL(xs))
386 #define _PP_MAP_21(f, xs) f(_PP_HEAD(xs)) _PP_MAP_20(f, _PP_TAIL(xs))
387 #define _PP_MAP_22(f, xs) f(_PP_HEAD(xs)) _PP_MAP_21(f, _PP_TAIL(xs))
388 #define _PP_MAP_23(f, xs) f(_PP_HEAD(xs)) _PP_MAP_22(f, _PP_TAIL(xs))
389 #define _PP_MAP_24(f, xs) f(_PP_HEAD(xs)) _PP_MAP_23(f, _PP_TAIL(xs))
390 #define _PP_MAP(f, xs) _PP_CONCAT_2(_PP_MAP_, _PP_NARGS xs) (f, xs)
392 /* Apply function macro to each element in tuple in reverse order.
393 * Output is not enforced to be a tuple.
395 #define _PP_RMAP_1(f, xs) f(_PP_HEAD(xs))
396 #define _PP_RMAP_2(f, xs) _PP_RMAP_1(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
397 #define _PP_RMAP_3(f, xs) _PP_RMAP_2(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
398 #define _PP_RMAP_4(f, xs) _PP_RMAP_3(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
399 #define _PP_RMAP_5(f, xs) _PP_RMAP_4(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
400 #define _PP_RMAP_6(f, xs) _PP_RMAP_5(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
401 #define _PP_RMAP_7(f, xs) _PP_RMAP_6(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
402 #define _PP_RMAP_8(f, xs) _PP_RMAP_7(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
403 #define _PP_RMAP_9(f, xs) _PP_RMAP_8(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
404 #define _PP_RMAP_10(f, xs) _PP_RMAP_9(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
405 #define _PP_RMAP_11(f, xs) _PP_RMAP_10(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
406 #define _PP_RMAP_12(f, xs) _PP_RMAP_11(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
407 #define _PP_RMAP_13(f, xs) _PP_RMAP_12(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
408 #define _PP_RMAP_14(f, xs) _PP_RMAP_13(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
409 #define _PP_RMAP_15(f, xs) _PP_RMAP_14(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
410 #define _PP_RMAP_16(f, xs) _PP_RMAP_15(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
411 #define _PP_RMAP_17(f, xs) _PP_RMAP_16(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
412 #define _PP_RMAP_18(f, xs) _PP_RMAP_17(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
413 #define _PP_RMAP_19(f, xs) _PP_RMAP_18(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
414 #define _PP_RMAP_20(f, xs) _PP_RMAP_19(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
415 #define _PP_RMAP_21(f, xs) _PP_RMAP_20(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
416 #define _PP_RMAP_22(f, xs) _PP_RMAP_21(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
417 #define _PP_RMAP_23(f, xs) _PP_RMAP_22(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
418 #define _PP_RMAP_24(f, xs) _PP_RMAP_23(f, _PP_TAIL(xs)) f(_PP_HEAD(xs))
419 #define _PP_RMAP(f, xs) _PP_CONCAT_2(_PP_RMAP_, _PP_NARGS xs) (f, xs)
421 /* Used to implement _BT_LOG_MESSAGE_FORMAT_CONTAINS() macro. All possible
422 * fields must be mentioned here. Not counting F_INIT() here because it's
423 * somewhat special and is handled spearatly (at least for now).
425 #define _BT_LOG_MESSAGE_FORMAT_MASK__ (0<<0)
426 #define _BT_LOG_MESSAGE_FORMAT_MASK__YEAR (1<<1)
427 #define _BT_LOG_MESSAGE_FORMAT_MASK__MONTH (1<<2)
428 #define _BT_LOG_MESSAGE_FORMAT_MASK__DAY (1<<3)
429 #define _BT_LOG_MESSAGE_FORMAT_MASK__HOUR (1<<4)
430 #define _BT_LOG_MESSAGE_FORMAT_MASK__MINUTE (1<<5)
431 #define _BT_LOG_MESSAGE_FORMAT_MASK__SECOND (1<<6)
432 #define _BT_LOG_MESSAGE_FORMAT_MASK__MILLISECOND (1<<7)
433 #define _BT_LOG_MESSAGE_FORMAT_MASK__PID (1<<8)
434 #define _BT_LOG_MESSAGE_FORMAT_MASK__TID (1<<9)
435 #define _BT_LOG_MESSAGE_FORMAT_MASK__LEVEL (1<<10)
436 #define _BT_LOG_MESSAGE_FORMAT_MASK__TAG(ps, ts) (1<<11)
437 #define _BT_LOG_MESSAGE_FORMAT_MASK__FUNCTION (1<<12)
438 #define _BT_LOG_MESSAGE_FORMAT_MASK__FILENAME (1<<13)
439 #define _BT_LOG_MESSAGE_FORMAT_MASK__FILELINE (1<<14)
440 #define _BT_LOG_MESSAGE_FORMAT_MASK__S(s) (1<<15)
441 #define _BT_LOG_MESSAGE_FORMAT_MASK__F_INIT(expr) (0<<16)
442 #define _BT_LOG_MESSAGE_FORMAT_MASK__F_UINT(w, v) (1<<17)
443 #define _BT_LOG_MESSAGE_FORMAT_MASK(field) \
444 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_MASK_, _, field)
446 /* Logical "or" of masks of fields used in specified format specification.
448 #define _BT_LOG_MESSAGE_FORMAT_FIELDS(format) \
449 (0 _PP_MAP(| _BT_LOG_MESSAGE_FORMAT_MASK, format))
451 /* Expands to expressions that evaluates to true if field is used in
452 * specified format specification. Example:
454 * #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(F_UINT, BT_LOG_MESSAGE_CTX_FORMAT)
458 #define _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, format) \
459 (_BT_LOG_MESSAGE_FORMAT_MASK(field) & _BT_LOG_MESSAGE_FORMAT_FIELDS(format))
461 /* Same, but checks all supported format specifications.
463 #define _BT_LOG_MESSAGE_FORMAT_FIELD_USED(field) \
464 (_BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_CTX_FORMAT) || \
465 _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_TAG_FORMAT) || \
466 _BT_LOG_MESSAGE_FORMAT_CONTAINS(field, BT_LOG_MESSAGE_SRC_FORMAT))
468 #define _BT_LOG_MESSAGE_FORMAT_DATETIME_USED \
469 (_BT_LOG_MESSAGE_FORMAT_CONTAINS(YEAR, BT_LOG_MESSAGE_CTX_FORMAT) || \
470 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MONTH, BT_LOG_MESSAGE_CTX_FORMAT) || \
471 _BT_LOG_MESSAGE_FORMAT_CONTAINS(DAY, BT_LOG_MESSAGE_CTX_FORMAT) || \
472 _BT_LOG_MESSAGE_FORMAT_CONTAINS(HOUR, BT_LOG_MESSAGE_CTX_FORMAT) || \
473 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MINUTE, BT_LOG_MESSAGE_CTX_FORMAT) || \
474 _BT_LOG_MESSAGE_FORMAT_CONTAINS(SECOND, BT_LOG_MESSAGE_CTX_FORMAT) || \
475 _BT_LOG_MESSAGE_FORMAT_CONTAINS(MILLISECOND, BT_LOG_MESSAGE_CTX_FORMAT))
477 #if defined(_MSC_VER) && !defined(__INTEL_COMPILER)
478 #pragma warning(disable:4204) /* nonstandard extension used: non-constant aggregate initializer */
479 #define memccpy _memccpy
482 #if (defined(_MSC_VER) && !defined(__INTEL_COMPILER)) || defined(__MINGW64__)
483 #define vsnprintf(s, sz, fmt, va) fake_vsnprintf(s, sz, fmt, va)
484 static int fake_vsnprintf(char *s
, size_t sz
, const char *fmt
, va_list ap
)
486 const int n
= vsnprintf_s(s
, sz
, _TRUNCATE
, fmt
, ap
);
487 return 0 < n
? n
: (int)sz
+ 1; /* no need in _vscprintf() for now */
489 #if BT_LOG_OPTIMIZE_SIZE
490 #define snprintf(s, sz, ...) fake_snprintf(s, sz, __VA_ARGS__)
491 static int fake_snprintf(char *s
, size_t sz
, const char *fmt
, ...)
495 const int n
= fake_vsnprintf(s
, sz
, fmt
, va
);
502 typedef void (*time_cb
)(struct tm
*const tm
, unsigned *const usec
);
503 typedef void (*pid_cb
)(int *const pid
, int *const tid
);
504 typedef void (*buffer_cb
)(bt_log_message
*msg
, char *buf
);
506 typedef struct src_location
508 const char *const func
;
509 const char *const file
;
514 typedef struct mem_block
521 static void time_callback(struct tm
*const tm
, unsigned *const usec
);
522 static void pid_callback(int *const pid
, int *const tid
);
523 static void buffer_callback(bt_log_message
*msg
, char *buf
);
525 STATIC_ASSERT(eol_fits_eol_sz
, sizeof(BT_LOG_EOL
) <= BT_LOG_EOL_SZ
);
526 STATIC_ASSERT(eol_sz_greater_than_zero
, 0 < BT_LOG_EOL_SZ
);
527 STATIC_ASSERT(eol_sz_less_than_buf_sz
, BT_LOG_EOL_SZ
< BT_LOG_BUF_SZ
);
528 #if !defined(_WIN32) && !defined(_WIN64)
529 STATIC_ASSERT(buf_sz_less_than_pipe_buf
, BT_LOG_BUF_SZ
<= PIPE_BUF
);
531 static const char c_hex
[] = "0123456789abcdef";
533 static INSTRUMENTED_CONST
unsigned g_buf_sz
= BT_LOG_BUF_SZ
- BT_LOG_EOL_SZ
;
534 static INSTRUMENTED_CONST time_cb g_time_cb
= time_callback
;
535 static INSTRUMENTED_CONST pid_cb g_pid_cb
= pid_callback
;
536 static INSTRUMENTED_CONST buffer_cb g_buffer_cb
= buffer_callback
;
538 #if BT_LOG_USE_ANDROID_LOG
539 #include <android/log.h>
541 static INLINE
int android_lvl(const int lvl
)
546 return ANDROID_LOG_VERBOSE
;
548 return ANDROID_LOG_DEBUG
;
550 return ANDROID_LOG_INFO
;
552 return ANDROID_LOG_WARN
;
554 return ANDROID_LOG_ERROR
;
556 return ANDROID_LOG_FATAL
;
558 ASSERT_UNREACHABLE("Bad log level");
559 return ANDROID_LOG_UNKNOWN
;
563 static void out_android_callback(const bt_log_message
*const msg
, void *arg
)
567 const char *tag
= msg
->p
;
568 if (msg
->tag_e
!= msg
->tag_b
)
573 __android_log_print(android_lvl(msg
->lvl
), tag
, "%s", msg
->msg_b
);
576 enum { OUT_ANDROID_MASK
= BT_LOG_PUT_STD
& ~BT_LOG_PUT_CTX
};
577 #define OUT_ANDROID OUT_ANDROID_MASK, 0, out_android_callback
581 #include <CoreFoundation/CoreFoundation.h>
582 CF_EXPORT
void CFLog(int32_t level
, CFStringRef format
, ...);
584 static INLINE
int apple_lvl(const int lvl
)
589 return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
591 return 7; /* ASL_LEVEL_DEBUG / kCFLogLevelDebug */;
593 return 6; /* ASL_LEVEL_INFO / kCFLogLevelInfo */;
595 return 4; /* ASL_LEVEL_WARNING / kCFLogLevelWarning */;
597 return 3; /* ASL_LEVEL_ERR / kCFLogLevelError */;
599 return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
601 ASSERT_UNREACHABLE("Bad log level");
602 return 0; /* ASL_LEVEL_EMERG / kCFLogLevelEmergency */;
606 static void out_nslog_callback(const bt_log_message
*const msg
, void *arg
)
610 CFLog(apple_lvl(msg
->lvl
), CFSTR("%s"), msg
->tag_b
);
613 enum { OUT_NSLOG_MASK
= BT_LOG_PUT_STD
& ~BT_LOG_PUT_CTX
};
614 #define OUT_NSLOG OUT_NSLOG_MASK, 0, out_nslog_callback
617 #if BT_LOG_USE_DEBUGSTRING
620 static void out_debugstring_callback(const bt_log_message
*const msg
, void *arg
)
625 OutputDebugStringA(msg
->buf
);
628 enum { OUT_DEBUGSTRING_MASK
= BT_LOG_PUT_STD
};
629 #define OUT_DEBUGSTRING OUT_DEBUGSTRING_MASK, 0, out_debugstring_callback
633 void bt_log_out_stderr_callback(const bt_log_message
*const msg
, void *arg
)
636 const size_t eol_len
= sizeof(BT_LOG_EOL
) - 1;
637 memcpy(msg
->p
, BT_LOG_EOL
, eol_len
);
638 #if defined(_WIN32) || defined(_WIN64)
639 /* WriteFile() is atomic for local files opened with FILE_APPEND_DATA and
640 without FILE_WRITE_DATA */
641 WriteFile(GetStdHandle(STD_ERROR_HANDLE
), msg
->buf
,
642 (DWORD
)(msg
->p
- msg
->buf
+ eol_len
), 0, 0);
644 /* write() is atomic for buffers less than or equal to PIPE_BUF. */
645 RETVAL_UNUSED(write(STDERR_FILENO
, msg
->buf
,
646 (size_t)(msg
->p
- msg
->buf
) + eol_len
));
650 static const bt_log_output out_stderr
= {BT_LOG_OUT_STDERR
};
652 #if !BT_LOG_EXTERN_TAG_PREFIX
653 BT_LOG_DEFINE_TAG_PREFIX
= 0;
656 #if !BT_LOG_EXTERN_GLOBAL_FORMAT
657 BT_LOG_DEFINE_GLOBAL_FORMAT
= {BT_LOG_MEM_WIDTH
};
660 #if !BT_LOG_EXTERN_GLOBAL_OUTPUT
661 #if BT_LOG_USE_ANDROID_LOG
662 BT_LOG_DEFINE_GLOBAL_OUTPUT
= {OUT_ANDROID
};
663 #elif BT_LOG_USE_NSLOG
664 BT_LOG_DEFINE_GLOBAL_OUTPUT
= {OUT_NSLOG
};
665 #elif BT_LOG_USE_DEBUGSTRING
666 BT_LOG_DEFINE_GLOBAL_OUTPUT
= {OUT_DEBUGSTRING
};
668 BT_LOG_DEFINE_GLOBAL_OUTPUT
= {BT_LOG_OUT_STDERR
};
672 #if !BT_LOG_EXTERN_GLOBAL_OUTPUT_LEVEL
673 BT_LOG_DEFINE_GLOBAL_OUTPUT_LEVEL
= 0;
676 const bt_log_spec _bt_log_stderr_spec
=
678 BT_LOG_GLOBAL_FORMAT
,
682 static const bt_log_spec global_spec
=
684 BT_LOG_GLOBAL_FORMAT
,
685 BT_LOG_GLOBAL_OUTPUT
,
688 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(LEVEL, BT_LOG_MESSAGE_CTX_FORMAT)
689 static char lvl_char(const int lvl
)
706 ASSERT_UNREACHABLE("Bad log level");
712 #define GCCVER_LESS(MAJOR, MINOR, PATCH) \
713 (__GNUC__ < MAJOR || \
714 (__GNUC__ == MAJOR && (__GNUC_MINOR__ < MINOR || \
715 (__GNUC_MINOR__ == MINOR && __GNUC_PATCHLEVEL__ < PATCH))))
717 #if !defined(__clang__) && defined(__GNUC__) && GCCVER_LESS(4,7,0)
718 #define __atomic_load_n(vp, model) __sync_fetch_and_add(vp, 0)
719 #define __atomic_fetch_add(vp, n, model) __sync_fetch_and_add(vp, n)
720 #define __atomic_sub_fetch(vp, n, model) __sync_sub_and_fetch(vp, n)
721 #define __atomic_or_fetch(vp, n, model) __sync_or_and_fetch(vp, n)
722 #define __atomic_and_fetch(vp, n, model) __sync_and_and_fetch(vp, n)
723 /* Note: will not store old value of *vp in *ep (non-standard behaviour) */
724 #define __atomic_compare_exchange_n(vp, ep, d, weak, smodel, fmodel) \
725 __sync_bool_compare_and_swap(vp, *(ep), d)
728 #if !BT_LOG_OPTIMIZE_SIZE && !defined(_WIN32) && !defined(_WIN64)
730 #define TCACHE_STALE (0x40000000)
731 #define TCACHE_FLUID (0x40000000 | 0x80000000)
732 static unsigned g_tcache_mode
= TCACHE_STALE
;
733 static struct timeval g_tcache_tv
= {0, 0};
734 static struct tm g_tcache_tm
= {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
736 static INLINE
int tcache_get(const struct timeval
*const tv
, struct tm
*const tm
)
739 mode
= __atomic_load_n(&g_tcache_mode
, __ATOMIC_RELAXED
);
740 if (0 == (mode
& TCACHE_FLUID
))
742 mode
= __atomic_fetch_add(&g_tcache_mode
, 1, __ATOMIC_ACQUIRE
);
743 if (0 == (mode
& TCACHE_FLUID
))
745 if (g_tcache_tv
.tv_sec
== tv
->tv_sec
)
748 __atomic_sub_fetch(&g_tcache_mode
, 1, __ATOMIC_RELEASE
);
751 __atomic_or_fetch(&g_tcache_mode
, TCACHE_STALE
, __ATOMIC_RELAXED
);
753 __atomic_sub_fetch(&g_tcache_mode
, 1, __ATOMIC_RELEASE
);
758 static INLINE
void tcache_set(const struct timeval
*const tv
, struct tm
*const tm
)
760 unsigned stale
= TCACHE_STALE
;
761 if (__atomic_compare_exchange_n(&g_tcache_mode
, &stale
, TCACHE_FLUID
,
762 0, __ATOMIC_ACQUIRE
, __ATOMIC_RELAXED
))
766 __atomic_and_fetch(&g_tcache_mode
, ~TCACHE_FLUID
, __ATOMIC_RELEASE
);
771 static void time_callback(struct tm
*const tm
, unsigned *const msec
)
773 #if !_BT_LOG_MESSAGE_FORMAT_DATETIME_USED
777 #if defined(_WIN32) || defined(_WIN64)
780 tm
->tm_year
= st
.wYear
;
781 tm
->tm_mon
= st
.wMonth
;
782 tm
->tm_mday
= st
.wDay
;
783 tm
->tm_wday
= st
.wDayOfWeek
;
784 tm
->tm_hour
= st
.wHour
;
785 tm
->tm_min
= st
.wMinute
;
786 tm
->tm_sec
= st
.wSecond
;
787 *msec
= st
.wMilliseconds
;
790 gettimeofday(&tv
, 0);
792 localtime_r(&tv
.tv_sec
, tm
);
794 if (!tcache_get(&tv
, tm
))
796 localtime_r(&tv
.tv_sec
, tm
);
800 *msec
= (unsigned)tv
.tv_usec
/ 1000;
805 static void pid_callback(int *const pid
, int *const tid
)
807 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(PID, BT_LOG_MESSAGE_CTX_FORMAT)
810 #if defined(_WIN32) || defined(_WIN64)
811 *pid
= GetCurrentProcessId();
817 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(TID, BT_LOG_MESSAGE_CTX_FORMAT)
820 #if defined(_WIN32) || defined(_WIN64)
821 *tid
= GetCurrentThreadId();
822 #elif defined(__ANDROID__)
824 #elif defined(__linux__)
825 *tid
= syscall(SYS_gettid
);
826 #elif defined(__MACH__)
827 *tid
= (int)pthread_mach_thread_np(pthread_self());
829 #define Platform not supported
834 static void buffer_callback(bt_log_message
*msg
, char *buf
)
836 msg
->e
= (msg
->p
= msg
->buf
= buf
) + g_buf_sz
;
839 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(FUNCTION, BT_LOG_MESSAGE_SRC_FORMAT)
840 static const char *funcname(const char *func
)
842 return func
? func
: "";
846 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(FILENAME, BT_LOG_MESSAGE_SRC_FORMAT)
847 static const char *filename(const char *file
)
849 const char *f
= file
;
850 for (const char *p
= file
; 0 != *p
; ++p
)
852 if ('/' == *p
|| '\\' == *p
)
861 static INLINE
size_t nprintf_size(bt_log_message
*const msg
)
863 // *nprintf() always puts 0 in the end when input buffer is not empty. This
864 // 0 is not desired because its presence sets (ctx->p) to (ctx->e - 1) which
865 // leaves space for one more character. Some put_xxx() functions don't use
866 // *nprintf() and could use that last character. In that case log line will
867 // have multiple (two) half-written parts which is confusing. To workaround
868 // that we allow *nprintf() to write its 0 in the eol area (which is always
870 return (size_t)(msg
->e
- msg
->p
+ 1);
873 static INLINE
void put_nprintf(bt_log_message
*const msg
, const int n
)
877 msg
->p
= n
< msg
->e
- msg
->p
? msg
->p
+ n
: msg
->e
;
881 static INLINE
char *put_padding_r(const unsigned w
, const char wc
,
884 for (char *const b
= e
- w
; b
< p
; *--p
= wc
) {}
888 static char *put_integer_r(unsigned v
, const int sign
,
889 const unsigned w
, const char wc
, char *const e
)
891 static const char _signs
[] = {'-', '0', '+'};
892 static const char *const signs
= _signs
+ 1;
894 do { *--p
= '0' + v
% 10; } while (0 != (v
/= 10));
895 if (0 == sign
) return put_padding_r(w
, wc
, p
, e
);
899 return put_padding_r(w
, wc
, p
, e
);
901 p
= put_padding_r(w
, wc
, p
, e
+ 1);
906 static INLINE
char *put_uint_r(const unsigned v
, const unsigned w
, const char wc
,
909 return put_integer_r(v
, 0, w
, wc
, e
);
912 static INLINE
char *put_int_r(const int v
, const unsigned w
, const char wc
,
915 return 0 <= v
? put_integer_r((unsigned)v
, 0, w
, wc
, e
)
916 : put_integer_r((unsigned)-v
, -1, w
, wc
, e
);
919 static INLINE
char *put_stringn(const char *const s_p
, const char *const s_e
,
920 char *const p
, char *const e
)
922 const ptrdiff_t m
= e
- p
;
923 ptrdiff_t n
= s_e
- s_p
;
932 static INLINE
char *put_string(const char *s
, char *p
, char *const e
)
934 const ptrdiff_t n
= e
- p
;
935 char *const c
= (char *)memccpy(p
, s
, '\0', n
);
936 return 0 != c
? c
- 1: e
;
939 static INLINE
char *put_uint(unsigned v
, const unsigned w
, const char wc
,
940 char *const p
, char *const e
)
943 char *const se
= buf
+ _countof(buf
);
944 char *sp
= put_uint_r(v
, w
, wc
, se
);
945 return put_stringn(sp
, se
, p
, e
);
948 #define PUT_CSTR_R(p, STR) \
950 for (unsigned i = sizeof(STR) - 1; 0 < i--;) { \
955 #define PUT_CSTR_CHECKED(p, e, STR) \
957 for (unsigned i = 0; (e) > (p) && (sizeof(STR) - 1) > i; ++i) { \
962 /* F_INIT field support.
964 #define _BT_LOG_MESSAGE_FORMAT_INIT__
965 #define _BT_LOG_MESSAGE_FORMAT_INIT__YEAR
966 #define _BT_LOG_MESSAGE_FORMAT_INIT__MONTH
967 #define _BT_LOG_MESSAGE_FORMAT_INIT__DAY
968 #define _BT_LOG_MESSAGE_FORMAT_INIT__HOUR
969 #define _BT_LOG_MESSAGE_FORMAT_INIT__MINUTE
970 #define _BT_LOG_MESSAGE_FORMAT_INIT__SECOND
971 #define _BT_LOG_MESSAGE_FORMAT_INIT__MILLISECOND
972 #define _BT_LOG_MESSAGE_FORMAT_INIT__PID
973 #define _BT_LOG_MESSAGE_FORMAT_INIT__TID
974 #define _BT_LOG_MESSAGE_FORMAT_INIT__LEVEL
975 #define _BT_LOG_MESSAGE_FORMAT_INIT__TAG(ps, ts)
976 #define _BT_LOG_MESSAGE_FORMAT_INIT__FUNCTION
977 #define _BT_LOG_MESSAGE_FORMAT_INIT__FILENAME
978 #define _BT_LOG_MESSAGE_FORMAT_INIT__FILELINE
979 #define _BT_LOG_MESSAGE_FORMAT_INIT__S(s)
980 #define _BT_LOG_MESSAGE_FORMAT_INIT__F_INIT(expr) _PP_UNTUPLE(expr);
981 #define _BT_LOG_MESSAGE_FORMAT_INIT__F_UINT(w, v)
982 #define _BT_LOG_MESSAGE_FORMAT_INIT(field) \
983 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_INIT_, _, field)
985 /* Implements generation of printf-like format string for log message
986 * format specification.
988 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__ ""
989 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__YEAR "%04u"
990 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MONTH "%02u"
991 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__DAY "%02u"
992 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__HOUR "%02u"
993 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MINUTE "%02u"
994 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__SECOND "%02u"
995 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__MILLISECOND "%03u"
996 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__PID "%5i"
997 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__TID "%5i"
998 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__LEVEL "%c"
999 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__TAG UNDEFINED
1000 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FUNCTION "%s"
1001 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FILENAME "%s"
1002 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__FILELINE "%u"
1003 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__S(s) s
1004 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__F_INIT(expr) ""
1005 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT__F_UINT(w, v) "%" #w "u"
1006 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_FMT(field) \
1007 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT_, _, field)
1009 /* Implements generation of printf-like format parameters for log message
1010 * format specification.
1012 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__
1013 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__YEAR ,(unsigned)(tm.tm_year + 1900)
1014 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MONTH ,(unsigned)(tm.tm_mon + 1)
1015 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__DAY ,(unsigned)tm.tm_mday
1016 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__HOUR ,(unsigned)tm.tm_hour
1017 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MINUTE ,(unsigned)tm.tm_min
1018 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__SECOND ,(unsigned)tm.tm_sec
1019 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__MILLISECOND ,(unsigned)msec
1020 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__PID ,pid
1021 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__TID ,tid
1022 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__LEVEL ,(char)lvl_char(msg->lvl)
1023 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__TAG UNDEFINED
1024 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FUNCTION ,funcname(src->func)
1025 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FILENAME ,filename(src->file)
1026 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__FILELINE ,src->line
1027 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__S(s)
1028 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__F_INIT(expr)
1029 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL__F_UINT(w, v) ,v
1030 #define _BT_LOG_MESSAGE_FORMAT_PRINTF_VAL(field) \
1031 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL_, _, field)
1033 /* Implements generation of put_xxx_t statements for log message specification.
1035 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__
1036 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__YEAR p = put_uint_r(tm.tm_year + 1900, 4, '0', p);
1037 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MONTH p = put_uint_r((unsigned)tm.tm_mon + 1, 2, '0', p);
1038 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__DAY p = put_uint_r((unsigned)tm.tm_mday, 2, '0', p);
1039 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__HOUR p = put_uint_r((unsigned)tm.tm_hour, 2, '0', p);
1040 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MINUTE p = put_uint_r((unsigned)tm.tm_min, 2, '0', p);
1041 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__SECOND p = put_uint_r((unsigned)tm.tm_sec, 2, '0', p);
1042 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__MILLISECOND p = put_uint_r(msec, 3, '0', p);
1043 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__PID p = put_int_r(pid, 5, ' ', p);
1044 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__TID p = put_int_r(tid, 5, ' ', p);
1045 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__LEVEL *--p = lvl_char(msg->lvl);
1046 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__TAG UNDEFINED
1047 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FUNCTION UNDEFINED
1048 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FILENAME UNDEFINED
1049 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__FILELINE UNDEFINED
1050 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__S(s) PUT_CSTR_R(p, s);
1051 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__F_INIT(expr)
1052 #define _BT_LOG_MESSAGE_FORMAT_PUT_R__F_UINT(w, v) p = put_uint_r(v, w, ' ', p);
1053 #define _BT_LOG_MESSAGE_FORMAT_PUT_R(field) \
1054 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PUT_R_, _, field)
1056 static void put_ctx(bt_log_message
*const msg
)
1058 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT
, BT_LOG_MESSAGE_CTX_FORMAT
)
1059 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_CTX_FORMAT)
1062 #if _BT_LOG_MESSAGE_FORMAT_DATETIME_USED
1065 g_time_cb(&tm
, &msec
);
1067 #if _BT_LOG_MESSAGE_FORMAT_CONTAINS(PID, BT_LOG_MESSAGE_CTX_FORMAT) || \
1068 _BT_LOG_MESSAGE_FORMAT_CONTAINS(TID, BT_LOG_MESSAGE_CTX_FORMAT)
1070 g_pid_cb(&pid
, &tid
);
1073 #if BT_LOG_OPTIMIZE_SIZE
1075 n
= snprintf(msg
->p
, nprintf_size(msg
),
1076 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT
, BT_LOG_MESSAGE_CTX_FORMAT
)
1077 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL
, BT_LOG_MESSAGE_CTX_FORMAT
));
1078 put_nprintf(msg
, n
);
1081 char *const e
= buf
+ sizeof(buf
);
1083 _PP_RMAP(_BT_LOG_MESSAGE_FORMAT_PUT_R
, BT_LOG_MESSAGE_CTX_FORMAT
)
1084 msg
->p
= put_stringn(p
, e
, msg
->p
, msg
->e
);
1089 #define PUT_TAG(msg, tag, prefix_delim, tag_delim) \
1092 msg->tag_b = msg->p; \
1093 if (0 != (ch = _bt_log_tag_prefix)) { \
1094 for (;msg->e != msg->p && 0 != (*msg->p = *ch); ++msg->p, ++ch) {} \
1096 if (0 != (ch = tag) && 0 != tag[0]) { \
1097 if (msg->tag_b != msg->p) { \
1098 PUT_CSTR_CHECKED(msg->p, msg->e, prefix_delim); \
1100 for (;msg->e != msg->p && 0 != (*msg->p = *ch); ++msg->p, ++ch) {} \
1102 msg->tag_e = msg->p; \
1103 if (msg->tag_b != msg->p) { \
1104 PUT_CSTR_CHECKED(msg->p, msg->e, tag_delim); \
1108 /* Implements simple put statements for log message specification.
1110 #define _BT_LOG_MESSAGE_FORMAT_PUT__
1111 #define _BT_LOG_MESSAGE_FORMAT_PUT__YEAR UNDEFINED
1112 #define _BT_LOG_MESSAGE_FORMAT_PUT__MONTH UNDEFINED
1113 #define _BT_LOG_MESSAGE_FORMAT_PUT__DAY UNDEFINED
1114 #define _BT_LOG_MESSAGE_FORMAT_PUT__HOUR UNDEFINED
1115 #define _BT_LOG_MESSAGE_FORMAT_PUT__MINUTE UNDEFINED
1116 #define _BT_LOG_MESSAGE_FORMAT_PUT__SECOND UNDEFINED
1117 #define _BT_LOG_MESSAGE_FORMAT_PUT__MILLISECOND UNDEFINED
1118 #define _BT_LOG_MESSAGE_FORMAT_PUT__PID UNDEFINED
1119 #define _BT_LOG_MESSAGE_FORMAT_PUT__TID UNDEFINED
1120 #define _BT_LOG_MESSAGE_FORMAT_PUT__LEVEL UNDEFINED
1121 #define _BT_LOG_MESSAGE_FORMAT_PUT__TAG(pd, td) PUT_TAG(msg, tag, pd, td);
1122 #define _BT_LOG_MESSAGE_FORMAT_PUT__FUNCTION msg->p = put_string(funcname(src->func), msg->p, msg->e);
1123 #define _BT_LOG_MESSAGE_FORMAT_PUT__FILENAME msg->p = put_string(filename(src->file), msg->p, msg->e);
1124 #define _BT_LOG_MESSAGE_FORMAT_PUT__FILELINE msg->p = put_uint(src->line, 0, '\0', msg->p, msg->e);
1125 #define _BT_LOG_MESSAGE_FORMAT_PUT__S(s) PUT_CSTR_CHECKED(msg->p, msg->e, s);
1126 #define _BT_LOG_MESSAGE_FORMAT_PUT__F_INIT(expr)
1127 #define _BT_LOG_MESSAGE_FORMAT_PUT__F_UINT(w, v) msg->p = put_uint(v, w, ' ', msg->p, msg->e);
1128 #define _BT_LOG_MESSAGE_FORMAT_PUT(field) \
1129 _PP_CONCAT_3(_BT_LOG_MESSAGE_FORMAT_PUT_, _, field)
1131 static void put_tag(bt_log_message
*const msg
, const char *const tag
)
1133 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT
, BT_LOG_MESSAGE_TAG_FORMAT
)
1134 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(TAG, BT_LOG_MESSAGE_TAG_FORMAT)
1137 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_TAG_FORMAT)
1140 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PUT
, BT_LOG_MESSAGE_TAG_FORMAT
)
1144 static void put_src(bt_log_message
*const msg
, const src_location
*const src
)
1146 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_INIT
, BT_LOG_MESSAGE_SRC_FORMAT
)
1147 #if !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FUNCTION, BT_LOG_MESSAGE_SRC_FORMAT) && \
1148 !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FILENAME, BT_LOG_MESSAGE_SRC_FORMAT) && \
1149 !_BT_LOG_MESSAGE_FORMAT_CONTAINS(FILELINE, BT_LOG_MESSAGE_SRC_FORMAT)
1152 #if !_BT_LOG_MESSAGE_FORMAT_FIELDS(BT_LOG_MESSAGE_SRC_FORMAT)
1155 #if BT_LOG_OPTIMIZE_SIZE
1157 n
= snprintf(msg
->p
, nprintf_size(msg
),
1158 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_FMT
, BT_LOG_MESSAGE_SRC_FORMAT
)
1159 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PRINTF_VAL
, BT_LOG_MESSAGE_SRC_FORMAT
));
1160 put_nprintf(msg
, n
);
1162 _PP_MAP(_BT_LOG_MESSAGE_FORMAT_PUT
, BT_LOG_MESSAGE_SRC_FORMAT
)
1167 static void put_msg(bt_log_message
*const msg
,
1168 const char *const fmt
, va_list va
)
1171 msg
->msg_b
= msg
->p
;
1172 n
= vsnprintf(msg
->p
, nprintf_size(msg
), fmt
, va
);
1173 put_nprintf(msg
, n
);
1176 static void output_mem(const bt_log_spec
*log
, bt_log_message
*const msg
,
1177 const mem_block
*const mem
)
1179 if (0 == mem
->d
|| 0 == mem
->d_sz
)
1183 const unsigned char *mem_p
= (const unsigned char *)mem
->d
;
1184 const unsigned char *const mem_e
= mem_p
+ mem
->d_sz
;
1185 const unsigned char *mem_cut
;
1186 const ptrdiff_t mem_width
= (ptrdiff_t)log
->format
->mem_width
;
1187 char *const hex_b
= msg
->msg_b
;
1188 char *const ascii_b
= hex_b
+ 2 * mem_width
+ 2;
1189 char *const ascii_e
= ascii_b
+ mem_width
;
1190 if (msg
->e
< ascii_e
)
1194 while (mem_p
!= mem_e
)
1197 char *ascii
= ascii_b
;
1198 for (mem_cut
= mem_width
< mem_e
- mem_p
? mem_p
+ mem_width
: mem_e
;
1199 mem_cut
!= mem_p
; ++mem_p
)
1201 const unsigned char ch
= *mem_p
;
1202 *hex
++ = c_hex
[(0xf0 & ch
) >> 4];
1203 *hex
++ = c_hex
[(0x0f & ch
)];
1204 *ascii
++ = isprint(ch
)? (char)ch
: '?';
1206 while (hex
!= ascii_b
)
1211 log
->output
->callback(msg
, log
->output
->arg
);
1216 void bt_log_set_tag_prefix(const char *const prefix
)
1218 _bt_log_tag_prefix
= prefix
;
1222 void bt_log_set_mem_width(const unsigned w
)
1224 _bt_log_global_format
.mem_width
= w
;
1228 void bt_log_set_output_level(const int lvl
)
1230 _bt_log_global_output_lvl
= lvl
;
1234 void bt_log_set_output_v(const unsigned mask
, void *const arg
,
1235 const bt_log_output_cb callback
)
1237 _bt_log_global_output
.mask
= mask
;
1238 _bt_log_global_output
.arg
= arg
;
1239 _bt_log_global_output
.callback
= callback
;
1242 static void _bt_log_write_imp(
1243 const bt_log_spec
*log
,
1244 const src_location
*const src
, const mem_block
*const mem
,
1245 const int lvl
, const char *const tag
, const char *const fmt
, va_list va
)
1248 char buf
[BT_LOG_BUF_SZ
];
1249 const unsigned mask
= log
->output
->mask
;
1252 g_buffer_cb(&msg
, buf
);
1253 if (BT_LOG_PUT_CTX
& mask
)
1257 if (BT_LOG_PUT_TAG
& mask
)
1261 if (0 != src
&& BT_LOG_PUT_SRC
& mask
)
1265 if (BT_LOG_PUT_MSG
& mask
)
1267 put_msg(&msg
, fmt
, va
);
1269 log
->output
->callback(&msg
, log
->output
->arg
);
1270 if (0 != mem
&& BT_LOG_PUT_MSG
& mask
)
1272 output_mem(log
, &msg
, mem
);
1277 void _bt_log_write_d(
1278 const char *const func
, const char *const file
, const unsigned line
,
1279 const int lvl
, const char *const tag
,
1280 const char *const fmt
, ...)
1282 const src_location src
= {func
, file
, line
};
1285 _bt_log_write_imp(&global_spec
, &src
, 0, lvl
, tag
, fmt
, va
);
1290 void _bt_log_write_aux_d(
1291 const char *const func
, const char *const file
, const unsigned line
,
1292 const bt_log_spec
*const log
, const int lvl
, const char *const tag
,
1293 const char *const fmt
, ...)
1295 const src_location src
= {func
, file
, line
};
1298 _bt_log_write_imp(log
, &src
, 0, lvl
, tag
, fmt
, va
);
1303 void _bt_log_write(const int lvl
, const char *const tag
,
1304 const char *const fmt
, ...)
1308 _bt_log_write_imp(&global_spec
, 0, 0, lvl
, tag
, fmt
, va
);
1313 void _bt_log_write_aux(
1314 const bt_log_spec
*const log
, const int lvl
, const char *const tag
,
1315 const char *const fmt
, ...)
1319 _bt_log_write_imp(log
, 0, 0, lvl
, tag
, fmt
, va
);
1324 void _bt_log_write_mem_d(
1325 const char *const func
, const char *const file
, const unsigned line
,
1326 const int lvl
, const char *const tag
,
1327 const void *const d
, const unsigned d_sz
,
1328 const char *const fmt
, ...)
1330 const src_location src
= {func
, file
, line
};
1331 const mem_block mem
= {d
, d_sz
};
1334 _bt_log_write_imp(&global_spec
, &src
, &mem
, lvl
, tag
, fmt
, va
);
1339 void _bt_log_write_mem_aux_d(
1340 const char *const func
, const char *const file
, const unsigned line
,
1341 const bt_log_spec
*const log
, const int lvl
, const char *const tag
,
1342 const void *const d
, const unsigned d_sz
,
1343 const char *const fmt
, ...)
1345 const src_location src
= {func
, file
, line
};
1346 const mem_block mem
= {d
, d_sz
};
1349 _bt_log_write_imp(log
, &src
, &mem
, lvl
, tag
, fmt
, va
);
1354 void _bt_log_write_mem(const int lvl
, const char *const tag
,
1355 const void *const d
, const unsigned d_sz
,
1356 const char *const fmt
, ...)
1358 const mem_block mem
= {d
, d_sz
};
1361 _bt_log_write_imp(&global_spec
, 0, &mem
, lvl
, tag
, fmt
, va
);
1366 void _bt_log_write_mem_aux(
1367 const bt_log_spec
*const log
, const int lvl
, const char *const tag
,
1368 const void *const d
, const unsigned d_sz
,
1369 const char *const fmt
, ...)
1371 const mem_block mem
= {d
, d_sz
};
1374 _bt_log_write_imp(log
, 0, &mem
, lvl
, tag
, fmt
, va
);