Zephyr API Documentation 4.0.0
A Scalable Open Source RTOS
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log.h
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1/*
2 * Copyright (c) 2018 Nordic Semiconductor ASA
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7#ifndef ZEPHYR_INCLUDE_LOGGING_LOG_H_
8#define ZEPHYR_INCLUDE_LOGGING_LOG_H_
9
10#include <zephyr/logging/log_instance.h>
11#include <zephyr/logging/log_core.h>
12#include <zephyr/sys/iterable_sections.h>
13
14#ifdef __cplusplus
15extern "C" {
16#endif
17
44#define LOG_ERR(...) Z_LOG(LOG_LEVEL_ERR, __VA_ARGS__)
45
55#define LOG_WRN(...) Z_LOG(LOG_LEVEL_WRN, __VA_ARGS__)
56
65#define LOG_INF(...) Z_LOG(LOG_LEVEL_INF, __VA_ARGS__)
66
75#define LOG_DBG(...) Z_LOG(LOG_LEVEL_DBG, __VA_ARGS__)
76
86#define LOG_WRN_ONCE(...) \
87 do { \
88 static uint8_t __warned; \
89 if (unlikely(__warned == 0)) { \
90 Z_LOG(LOG_LEVEL_WRN, __VA_ARGS__); \
91 __warned = 1; \
92 } \
93 } while (0)
94
104#define LOG_PRINTK(...) Z_LOG_PRINTK(0, __VA_ARGS__)
105
114#define LOG_RAW(...) Z_LOG_PRINTK(1, __VA_ARGS__)
115
128#define LOG_INST_ERR(_log_inst, ...) \
129 Z_LOG_INSTANCE(LOG_LEVEL_ERR, _log_inst, __VA_ARGS__)
130
144#define LOG_INST_WRN(_log_inst, ...) \
145 Z_LOG_INSTANCE(LOG_LEVEL_WRN, _log_inst, __VA_ARGS__)
146
159#define LOG_INST_INF(_log_inst, ...) \
160 Z_LOG_INSTANCE(LOG_LEVEL_INF, _log_inst, __VA_ARGS__)
161
174#define LOG_INST_DBG(_log_inst, ...) \
175 Z_LOG_INSTANCE(LOG_LEVEL_DBG, _log_inst, __VA_ARGS__)
176
187#define LOG_HEXDUMP_ERR(_data, _length, _str) \
188 Z_LOG_HEXDUMP(LOG_LEVEL_ERR, _data, _length, (_str))
189
200#define LOG_HEXDUMP_WRN(_data, _length, _str) \
201 Z_LOG_HEXDUMP(LOG_LEVEL_WRN, _data, _length, (_str))
202
212#define LOG_HEXDUMP_INF(_data, _length, _str) \
213 Z_LOG_HEXDUMP(LOG_LEVEL_INF, _data, _length, (_str))
214
224#define LOG_HEXDUMP_DBG(_data, _length, _str) \
225 Z_LOG_HEXDUMP(LOG_LEVEL_DBG, _data, _length, (_str))
226
241#define LOG_INST_HEXDUMP_ERR(_log_inst, _data, _length, _str) \
242 Z_LOG_HEXDUMP_INSTANCE(LOG_LEVEL_ERR, _log_inst, _data, _length, _str)
243
256#define LOG_INST_HEXDUMP_WRN(_log_inst, _data, _length, _str) \
257 Z_LOG_HEXDUMP_INSTANCE(LOG_LEVEL_WRN, _log_inst, _data, _length, _str)
258
270#define LOG_INST_HEXDUMP_INF(_log_inst, _data, _length, _str) \
271 Z_LOG_HEXDUMP_INSTANCE(LOG_LEVEL_INF, _log_inst, _data, _length, _str)
272
284#define LOG_INST_HEXDUMP_DBG(_log_inst, _data, _length, _str) \
285 Z_LOG_HEXDUMP_INSTANCE(LOG_LEVEL_DBG, _log_inst, _data, _length, _str)
286
299void z_log_vprintk(const char *fmt, va_list ap);
300
301#ifdef __cplusplus
302}
303#define LOG_IN_CPLUSPLUS 1
304#endif
305/* Macro expects that optionally on second argument local log level is provided.
306 * If provided it is returned, otherwise default log level is returned or
307 * LOG_LEVEL, if it was locally defined.
308 */
309#if !defined(CONFIG_LOG)
310#define _LOG_LEVEL_RESOLVE(...) LOG_LEVEL_NONE
311#else
312#define _LOG_LEVEL_RESOLVE(...) \
313 Z_LOG_EVAL(COND_CODE_0(LOG_LEVEL, (1), (LOG_LEVEL)), \
314 (GET_ARG_N(2, __VA_ARGS__, LOG_LEVEL)), \
315 (GET_ARG_N(2, __VA_ARGS__, CONFIG_LOG_DEFAULT_LEVEL)))
316#endif
317
318/* Return first argument */
319#define _LOG_ARG1(arg1, ...) arg1
320
321#define _LOG_MODULE_CONST_DATA_CREATE(_name, _level) \
322 IF_ENABLED(CONFIG_LOG_FMT_SECTION, ( \
323 static const char UTIL_CAT(_name, _str)[] \
324 __in_section(_log_strings, static, _CONCAT(_name, _)) __used __noasan = \
325 STRINGIFY(_name);)) \
326 IF_ENABLED(LOG_IN_CPLUSPLUS, (extern)) \
327 const STRUCT_SECTION_ITERABLE_ALTERNATE(log_const, \
328 log_source_const_data, \
329 Z_LOG_ITEM_CONST_DATA(_name)) = \
330 { \
331 .name = COND_CODE_1(CONFIG_LOG_FMT_SECTION, \
332 (UTIL_CAT(_name, _str)), (STRINGIFY(_name))), \
333 .level = (_level) \
334 }
335
336#define _LOG_MODULE_DYNAMIC_DATA_CREATE(_name) \
337 STRUCT_SECTION_ITERABLE_ALTERNATE(log_dynamic, log_source_dynamic_data, \
338 LOG_ITEM_DYNAMIC_DATA(_name))
339
340#define _LOG_MODULE_DYNAMIC_DATA_COND_CREATE(_name) \
341 IF_ENABLED(CONFIG_LOG_RUNTIME_FILTERING, \
342 (_LOG_MODULE_DYNAMIC_DATA_CREATE(_name);))
343
344#define _LOG_MODULE_DATA_CREATE(_name, _level) \
345 _LOG_MODULE_CONST_DATA_CREATE(_name, _level); \
346 _LOG_MODULE_DYNAMIC_DATA_COND_CREATE(_name)
347
348/* Determine if data for the module shall be created. It is created if logging
349 * is enabled, override level is set or module specific level is set (not off).
350 */
351#define Z_DO_LOG_MODULE_REGISTER(...) \
352 COND_CODE_1(CONFIG_LOG, \
353 (Z_LOG_EVAL(CONFIG_LOG_OVERRIDE_LEVEL, \
354 (1), \
355 (Z_LOG_EVAL(_LOG_LEVEL_RESOLVE(__VA_ARGS__), (1), (0))) \
356 )), (0))
357
389#define LOG_MODULE_REGISTER(...) \
390 COND_CODE_1( \
391 Z_DO_LOG_MODULE_REGISTER(__VA_ARGS__), \
392 (_LOG_MODULE_DATA_CREATE(GET_ARG_N(1, __VA_ARGS__), \
393 _LOG_LEVEL_RESOLVE(__VA_ARGS__))),\
394 () \
395 ) \
396 LOG_MODULE_DECLARE(__VA_ARGS__)
397
424#define LOG_MODULE_DECLARE(...) \
425 extern const struct log_source_const_data \
426 Z_LOG_ITEM_CONST_DATA(GET_ARG_N(1, __VA_ARGS__)); \
427 extern struct log_source_dynamic_data \
428 LOG_ITEM_DYNAMIC_DATA(GET_ARG_N(1, __VA_ARGS__)); \
429 \
430 static const struct log_source_const_data * \
431 __log_current_const_data __unused = \
432 Z_DO_LOG_MODULE_REGISTER(__VA_ARGS__) ? \
433 &Z_LOG_ITEM_CONST_DATA(GET_ARG_N(1, __VA_ARGS__)) : \
434 NULL; \
435 \
436 static struct log_source_dynamic_data * \
437 __log_current_dynamic_data __unused = \
438 (Z_DO_LOG_MODULE_REGISTER(__VA_ARGS__) && \
439 IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING)) ? \
440 &LOG_ITEM_DYNAMIC_DATA(GET_ARG_N(1, __VA_ARGS__)) : \
441 NULL; \
442 \
443 static const uint32_t __log_level __unused = \
444 _LOG_LEVEL_RESOLVE(__VA_ARGS__)
445
453#define LOG_LEVEL_SET(level) static const uint32_t __log_level __unused = \
454 Z_LOG_RESOLVED_LEVEL(level, 0)
455
456#ifdef CONFIG_LOG_CUSTOM_HEADER
457/* This include must always be at the end of log.h */
458#include <zephyr_custom_log.h>
459#endif
460
461/*
462 * Eclipse CDT or JetBrains Clion parser is sometimes confused by logging API
463 * code and freezes the whole IDE. Following lines hides LOG_x macros from them.
464 */
465#if defined(__CDT_PARSER__) || defined(__JETBRAINS_IDE__)
466#undef LOG_ERR
467#undef LOG_WRN
468#undef LOG_INF
469#undef LOG_DBG
470
471#undef LOG_HEXDUMP_ERR
472#undef LOG_HEXDUMP_WRN
473#undef LOG_HEXDUMP_INF
474#undef LOG_HEXDUMP_DBG
475
476#define LOG_ERR(...) (void) 0
477#define LOG_WRN(...) (void) 0
478#define LOG_DBG(...) (void) 0
479#define LOG_INF(...) (void) 0
480
481#define LOG_HEXDUMP_ERR(...) (void) 0
482#define LOG_HEXDUMP_WRN(...) (void) 0
483#define LOG_HEXDUMP_DBG(...) (void) 0
484#define LOG_HEXDUMP_INF(...) (void) 0
485#endif
486
491#endif /* ZEPHYR_INCLUDE_LOGGING_LOG_H_ */
log_core.h
log_instance.h
iterable_sections.h