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zephyr/include/logging/log_core.h

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/*
* Copyright (c) 2018 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_LOGGING_LOG_CORE_H_
#define ZEPHYR_INCLUDE_LOGGING_LOG_CORE_H_
#include <logging/log_msg.h>
#include <logging/log_core2.h>
#include <logging/log_instance.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdarg.h>
#include <syscall.h>
#include <sys/util.h>
#define LOG_LEVEL_NONE 0U
#define LOG_LEVEL_ERR 1U
#define LOG_LEVEL_WRN 2U
#define LOG_LEVEL_INF 3U
#define LOG_LEVEL_DBG 4U
#ifdef __cplusplus
extern "C" {
#endif
#ifndef CONFIG_LOG
#define CONFIG_LOG_DEFAULT_LEVEL 0U
#define CONFIG_LOG_MAX_LEVEL 0U
#endif
#if !defined(CONFIG_LOG) || defined(CONFIG_LOG_MINIMAL)
#define CONFIG_LOG_DOMAIN_ID 0U
#endif
#define LOG_FUNCTION_PREFIX_MASK \
(((uint32_t)IS_ENABLED(CONFIG_LOG_FUNC_NAME_PREFIX_ERR) << \
LOG_LEVEL_ERR) | \
((uint32_t)IS_ENABLED(CONFIG_LOG_FUNC_NAME_PREFIX_WRN) << \
LOG_LEVEL_WRN) | \
((uint32_t)IS_ENABLED(CONFIG_LOG_FUNC_NAME_PREFIX_INF) << \
LOG_LEVEL_INF) | \
((uint32_t)IS_ENABLED(CONFIG_LOG_FUNC_NAME_PREFIX_DBG) << LOG_LEVEL_DBG))
/** @brief Macro for returning local level value if defined or default.
*
* Check @ref IS_ENABLED macro for detailed explanation of the trick.
*/
#define Z_LOG_RESOLVED_LEVEL(_level, _default) \
Z_LOG_RESOLVED_LEVEL1(_level, _default)
#define Z_LOG_RESOLVED_LEVEL1(_level, _default) \
__COND_CODE(_LOG_XXXX##_level, (_level), (_default))
#define _LOG_XXXX0 _LOG_YYYY,
#define _LOG_XXXX0U _LOG_YYYY,
#define _LOG_XXXX1 _LOG_YYYY,
#define _LOG_XXXX1U _LOG_YYYY,
#define _LOG_XXXX2 _LOG_YYYY,
#define _LOG_XXXX2U _LOG_YYYY,
#define _LOG_XXXX3 _LOG_YYYY,
#define _LOG_XXXX3U _LOG_YYYY,
#define _LOG_XXXX4 _LOG_YYYY,
#define _LOG_XXXX4U _LOG_YYYY,
/**
* @brief Macro for conditional code generation if provided log level allows.
*
* Macro behaves similarly to standard \#if \#else \#endif clause. The
* difference is that it is evaluated when used and not when header file is
* included.
*
* @param _eval_level Evaluated level. If level evaluates to one of existing log
* log level (1-4) then macro evaluates to _iftrue.
* @param _iftrue Code that should be inserted when evaluated to true. Note,
* that parameter must be provided in brackets.
* @param _iffalse Code that should be inserted when evaluated to false.
* Note, that parameter must be provided in brackets.
*/
#define Z_LOG_EVAL(_eval_level, _iftrue, _iffalse) \
Z_LOG_EVAL1(_eval_level, _iftrue, _iffalse)
#define Z_LOG_EVAL1(_eval_level, _iftrue, _iffalse) \
__COND_CODE(_LOG_ZZZZ##_eval_level, _iftrue, _iffalse)
#define _LOG_ZZZZ1 _LOG_YYYY,
#define _LOG_ZZZZ1U _LOG_YYYY,
#define _LOG_ZZZZ2 _LOG_YYYY,
#define _LOG_ZZZZ2U _LOG_YYYY,
#define _LOG_ZZZZ3 _LOG_YYYY,
#define _LOG_ZZZZ3U _LOG_YYYY,
#define _LOG_ZZZZ4 _LOG_YYYY,
#define _LOG_ZZZZ4U _LOG_YYYY,
/** @brief Macro for getting log level for given module.
*
* It is evaluated to LOG_LEVEL if defined. Otherwise CONFIG_LOG_DEFAULT_LEVEL
* is used.
*/
#define _LOG_LEVEL() Z_LOG_RESOLVED_LEVEL(LOG_LEVEL, CONFIG_LOG_DEFAULT_LEVEL)
/**
* @def LOG_CONST_ID_GET
* @brief Macro for getting ID of the element of the section.
*
* @param _addr Address of the element.
*/
#define LOG_CONST_ID_GET(_addr) \
COND_CODE_1(CONFIG_LOG, ((__log_level ? log_const_source_id(_addr) : 0)), (0))
/**
* @def LOG_CURRENT_MODULE_ID
* @brief Macro for getting ID of current module.
*/
#define LOG_CURRENT_MODULE_ID() (__log_level != 0 ? \
log_const_source_id(__log_current_const_data) : 0U)
/**
* @def LOG_CURRENT_DYNAMIC_DATA_ADDR
* @brief Macro for getting address of dynamic structure of current module.
*/
#define LOG_CURRENT_DYNAMIC_DATA_ADDR() (__log_level ? \
__log_current_dynamic_data : (struct log_source_dynamic_data *)0U)
/** @brief Macro for getting ID of the element of the section.
*
* @param _addr Address of the element.
*/
#define LOG_DYNAMIC_ID_GET(_addr) \
COND_CODE_1(CONFIG_LOG, ((__log_level ? log_dynamic_source_id(_addr) : 0)), (0))
/* Set of defines that are set to 1 if function name prefix is enabled for given level. */
#define Z_LOG_FUNC_PREFIX_0U 0
#define Z_LOG_FUNC_PREFIX_1U COND_CODE_1(CONFIG_LOG_FUNC_NAME_PREFIX_ERR, (1), (0))
#define Z_LOG_FUNC_PREFIX_2U COND_CODE_1(CONFIG_LOG_FUNC_NAME_PREFIX_WRN, (1), (0))
#define Z_LOG_FUNC_PREFIX_3U COND_CODE_1(CONFIG_LOG_FUNC_NAME_PREFIX_INF, (1), (0))
#define Z_LOG_FUNC_PREFIX_4U COND_CODE_1(CONFIG_LOG_FUNC_NAME_PREFIX_DBG, (1), (0))
/**
* @brief Macro for optional injection of function name as first argument of
* formatted string. COND_CODE_0() macro is used to handle no arguments
* case.
*
* The purpose of this macro is to prefix string literal with format specifier
* for function name and inject function name as first argument. In order to
* handle string with no arguments _LOG_Z_EVAL is used.
*/
#define Z_LOG_STR_WITH_PREFIX2(...) \
"%s: " GET_ARG_N(1, __VA_ARGS__), (const char *)__func__\
COND_CODE_0(NUM_VA_ARGS_LESS_1(__VA_ARGS__),\
(),\
(, GET_ARGS_LESS_N(1, __VA_ARGS__))\
)
/* Macro handles case when no format string is provided: e.g. LOG_DBG().
* Handling of format string is deferred to the next level macro.
*/
#define Z_LOG_STR_WITH_PREFIX(...) \
COND_CODE_0(NUM_VA_ARGS_LESS_1(_, ##__VA_ARGS__), \
("%s", (const char *)__func__), \
(Z_LOG_STR_WITH_PREFIX2(__VA_ARGS__)))
/**
* @brief Handle optional injection of function name as the first argument.
*
* Additionally, macro is handling the empty message case.
*/
#define Z_LOG_STR(_level, ...) \
COND_CODE_1(UTIL_CAT(Z_LOG_FUNC_PREFIX_##_level), \
(Z_LOG_STR_WITH_PREFIX(__VA_ARGS__)), (__VA_ARGS__))
/******************************************************************************/
/****************** Internal macros for log frontend **************************/
/******************************************************************************/
/**@brief Second stage for Z_LOG_NARGS_POSTFIX */
#define Z_LOG_NARGS_POSTFIX_IMPL( \
_ignored, \
_0, _1, _2, _3, _4, _5, _6, _7, _8, _9, _10, \
_11, _12, _13, _14, N, ...) N
/**@brief Macro to get the postfix for further log message processing.
*
* Logs with more than 3 arguments are processed in a generic way.
*
* param[in] ... List of arguments
*
* @retval Postfix, number of arguments or _LONG when more than 3 arguments.
*/
#define Z_LOG_NARGS_POSTFIX(...) \
Z_LOG_NARGS_POSTFIX_IMPL(__VA_ARGS__, LONG, LONG, LONG, LONG, LONG, \
LONG, LONG, LONG, LONG, LONG, LONG, LONG, 3, 2, 1, 0, ~)
#define Z_LOG_INTERNAL_X(N, ...) UTIL_CAT(_LOG_INTERNAL_, N)(__VA_ARGS__)
#define Z_LOG_INTERNAL2(is_user_context, _src_level, ...) do { \
if (is_user_context) { \
log_from_user(_src_level, __VA_ARGS__); \
} else if (IS_ENABLED(CONFIG_LOG_IMMEDIATE)) { \
log_string_sync(_src_level, __VA_ARGS__); \
} else { \
Z_LOG_INTERNAL_X(Z_LOG_NARGS_POSTFIX(__VA_ARGS__), \
_src_level, __VA_ARGS__); \
} \
} while (false)
#define Z_LOG_INTERNAL(is_user_context, _level, _source, _dsource, ...) do { \
uint16_t src_id = \
IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
LOG_DYNAMIC_ID_GET(_dsource) : LOG_CONST_ID_GET(_source); \
struct log_msg_ids src_level = { \
.level = _level, \
.domain_id = CONFIG_LOG_DOMAIN_ID, \
.source_id = src_id \
}; \
Z_LOG_INTERNAL2(is_user_context, src_level, \
Z_LOG_STR(_level, __VA_ARGS__)); \
} while (0)
#define _LOG_INTERNAL_0(_src_level, _str) \
log_0(_str, _src_level)
#define _LOG_INTERNAL_1(_src_level, _str, _arg0) \
log_1(_str, (log_arg_t)(_arg0), _src_level)
#define _LOG_INTERNAL_2(_src_level, _str, _arg0, _arg1) \
log_2(_str, (log_arg_t)(_arg0), (log_arg_t)(_arg1), _src_level)
#define _LOG_INTERNAL_3(_src_level, _str, _arg0, _arg1, _arg2) \
log_3(_str, (log_arg_t)(_arg0), (log_arg_t)(_arg1), (log_arg_t)(_arg2), _src_level)
#define __LOG_ARG_CAST(_x) (log_arg_t)(_x)
#define __LOG_ARGUMENTS(...) FOR_EACH(__LOG_ARG_CAST, (,), __VA_ARGS__)
#define _LOG_INTERNAL_LONG(_src_level, _str, ...) \
do { \
log_arg_t args[] = {__LOG_ARGUMENTS(__VA_ARGS__)};\
log_n(_str, args, ARRAY_SIZE(args), _src_level); \
} while (false)
#define Z_LOG_LEVEL_CHECK(_level, _check_level, _default_level) \
(_level <= Z_LOG_RESOLVED_LEVEL(_check_level, _default_level))
#define Z_LOG_CONST_LEVEL_CHECK(_level) \
(IS_ENABLED(CONFIG_LOG) && \
(Z_LOG_LEVEL_CHECK(_level, CONFIG_LOG_OVERRIDE_LEVEL, LOG_LEVEL_NONE) \
|| \
((IS_ENABLED(CONFIG_LOG_OVERRIDE_LEVEL) == false) && \
(_level <= __log_level) && \
(_level <= CONFIG_LOG_MAX_LEVEL) \
) \
))
/*****************************************************************************/
/****************** Defiinitions used by minimal logging *********************/
/*****************************************************************************/
void z_log_minimal_hexdump_print(int level, const void *data, size_t size);
void z_log_minimal_vprintk(const char *fmt, va_list ap);
void z_log_minimal_printk(const char *fmt, ...);
#define Z_LOG_TO_PRINTK(_level, fmt, ...) do { \
z_log_minimal_printk("%c: " fmt "\n", \
z_log_minimal_level_to_char(_level), \
##__VA_ARGS__); \
} while (false)
#define Z_LOG_TO_VPRINTK(_level, fmt, valist) do { \
z_log_minimal_printk("%c: ", z_log_minimal_level_to_char(_level)); \
z_log_minimal_vprintk(fmt, valist); \
z_log_minimal_printk("\n"); \
} while (false)
static inline char z_log_minimal_level_to_char(int level)
{
switch (level) {
case LOG_LEVEL_ERR:
return 'E';
case LOG_LEVEL_WRN:
return 'W';
case LOG_LEVEL_INF:
return 'I';
case LOG_LEVEL_DBG:
return 'D';
default:
return '?';
}
}
#define Z_LOG_INST(_inst) COND_CODE_1(CONFIG_LOG, (_inst), NULL)
/*****************************************************************************/
/****************** Macros for standard logging ******************************/
/*****************************************************************************/
#define Z_LOG2(_level, _source, _dsource, ...) do { \
if (!Z_LOG_CONST_LEVEL_CHECK(_level)) { \
break; \
} \
if (IS_ENABLED(CONFIG_LOG_MINIMAL)) { \
Z_LOG_TO_PRINTK(_level, __VA_ARGS__); \
break; \
} \
\
bool is_user_context = k_is_user_context(); \
uint32_t filters = IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
(_dsource)->filters : 0;\
if (IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) && !is_user_context && \
_level > Z_LOG_RUNTIME_FILTER(filters)) { \
break; \
} \
if (IS_ENABLED(CONFIG_LOG2)) { \
int _mode; \
void *_src = IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
(void *)_dsource : (void *)_source; \
Z_LOG_MSG2_CREATE(UTIL_NOT(IS_ENABLED(CONFIG_USERSPACE)), _mode, \
CONFIG_LOG_DOMAIN_ID, _src, _level, NULL,\
0, __VA_ARGS__); \
} else { \
Z_LOG_INTERNAL(is_user_context, _level, \
_source, _dsource, __VA_ARGS__);\
} \
if (false) { \
/* Arguments checker present but never evaluated.*/ \
/* Placed here to ensure that __VA_ARGS__ are*/ \
/* evaluated once when log is enabled.*/ \
z_log_printf_arg_checker(__VA_ARGS__); \
} \
} while (false)
#define Z_LOG(_level, ...) \
Z_LOG2(_level, __log_current_const_data, __log_current_dynamic_data, __VA_ARGS__)
#define Z_LOG_INSTANCE(_level, _inst, ...) \
Z_LOG2(_level, \
COND_CODE_1(CONFIG_LOG_RUNTIME_FILTERING, (NULL), (Z_LOG_INST(_inst))), \
(struct log_source_dynamic_data *)COND_CODE_1( \
CONFIG_LOG_RUNTIME_FILTERING, \
(Z_LOG_INST(_inst)), (NULL)), \
__VA_ARGS__)
/*****************************************************************************/
/****************** Macros for hexdump logging *******************************/
/*****************************************************************************/
#define Z_LOG_HEXDUMP2(_level, _source, _dsource, _data, _len, ...) do { \
const char *_str = GET_ARG_N(1, __VA_ARGS__); \
if (!Z_LOG_CONST_LEVEL_CHECK(_level)) { \
break; \
} \
bool is_user_context = k_is_user_context(); \
uint32_t filters = IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
(_dsource)->filters : 0;\
\
if (IS_ENABLED(CONFIG_LOG_MINIMAL)) { \
Z_LOG_TO_PRINTK(_level, "%s", _str); \
z_log_minimal_hexdump_print(_level, \
(const char *)_data, _len);\
break; \
} \
if (IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) && !is_user_context && \
_level > Z_LOG_RUNTIME_FILTER(filters)) { \
break; \
} \
if (IS_ENABLED(CONFIG_LOG2)) { \
int mode; \
void *_src = IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
(void *)_dsource : (void *)_source; \
Z_LOG_MSG2_CREATE(UTIL_NOT(IS_ENABLED(CONFIG_USERSPACE)), mode, \
CONFIG_LOG_DOMAIN_ID, _src, _level, \
_data, _len, \
COND_CODE_0(NUM_VA_ARGS_LESS_1(_, ##__VA_ARGS__), \
(), \
(COND_CODE_0(NUM_VA_ARGS_LESS_1(__VA_ARGS__), \
("%s", __VA_ARGS__), (__VA_ARGS__)))));\
break; \
} \
uint16_t src_id = \
IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
LOG_DYNAMIC_ID_GET(_dsource) : LOG_CONST_ID_GET(_source);\
struct log_msg_ids src_level = { \
.level = _level, \
.domain_id = CONFIG_LOG_DOMAIN_ID, \
.source_id = src_id, \
}; \
if (is_user_context) { \
log_hexdump_from_user(src_level, _str, \
(const char *)_data, _len); \
} else if (IS_ENABLED(CONFIG_LOG_IMMEDIATE)) { \
log_hexdump_sync(src_level, _str, (const char *)_data, _len); \
} else { \
log_hexdump(_str, (const char *)_data, _len, src_level); \
} \
} while (false)
#define Z_LOG_HEXDUMP(_level, _data, _length, ...) \
Z_LOG_HEXDUMP2(_level, \
__log_current_const_data, \
__log_current_dynamic_data, \
_data, _length, __VA_ARGS__)
#define Z_LOG_HEXDUMP_INSTANCE(_level, _inst, _data, _length, _str) \
Z_LOG_HEXDUMP2(_level, \
COND_CODE_1(CONFIG_LOG_RUNTIME_FILTERING, (NULL), (Z_LOG_INST(_inst))), \
(struct log_source_dynamic_data *)COND_CODE_1( \
CONFIG_LOG_RUNTIME_FILTERING, \
(Z_LOG_INST(_inst)), (NULL)), \
_data, _length, _str)
/*****************************************************************************/
/****************** Filtering macros *****************************************/
/*****************************************************************************/
/** @brief Number of bits used to encode log level. */
#define LOG_LEVEL_BITS 3U
/** @brief Filter slot size. */
#define LOG_FILTER_SLOT_SIZE LOG_LEVEL_BITS
/** @brief Number of slots in one word. */
#define LOG_FILTERS_NUM_OF_SLOTS (32 / LOG_FILTER_SLOT_SIZE)
/** @brief Slot mask. */
#define LOG_FILTER_SLOT_MASK (BIT(LOG_FILTER_SLOT_SIZE) - 1U)
/** @brief Bit offset of a slot.
*
* @param _id Slot ID.
*/
#define LOG_FILTER_SLOT_SHIFT(_id) (LOG_FILTER_SLOT_SIZE * (_id))
#define LOG_FILTER_SLOT_GET(_filters, _id) \
((*(_filters) >> LOG_FILTER_SLOT_SHIFT(_id)) & LOG_FILTER_SLOT_MASK)
#define LOG_FILTER_SLOT_SET(_filters, _id, _filter) \
do { \
*(_filters) &= ~(LOG_FILTER_SLOT_MASK << \
LOG_FILTER_SLOT_SHIFT(_id)); \
*(_filters) |= ((_filter) & LOG_FILTER_SLOT_MASK) << \
LOG_FILTER_SLOT_SHIFT(_id); \
} while (false)
#define LOG_FILTER_AGGR_SLOT_IDX 0
#define LOG_FILTER_AGGR_SLOT_GET(_filters) \
LOG_FILTER_SLOT_GET(_filters, LOG_FILTER_AGGR_SLOT_IDX)
#define LOG_FILTER_FIRST_BACKEND_SLOT_IDX 1
/* Return aggregated (highest) level for all enabled backends, e.g. if there
* are 3 active backends, one backend is set to get INF logs from a module and
* two other backends are set for ERR, returned level is INF.
*/
#define Z_LOG_RUNTIME_FILTER(_filter) \
LOG_FILTER_SLOT_GET(&_filter, LOG_FILTER_AGGR_SLOT_IDX)
/** @brief Log level value used to indicate log entry that should not be
* formatted (raw string).
*/
#define LOG_LEVEL_INTERNAL_RAW_STRING LOG_LEVEL_NONE
extern struct log_source_const_data __log_const_start[];
extern struct log_source_const_data __log_const_end[];
/** @brief Enum with possible actions for strdup operation. */
enum log_strdup_action {
LOG_STRDUP_SKIP, /**< None RAM string duplication. */
LOG_STRDUP_EXEC, /**< Always duplicate RAM strings. */
LOG_STRDUP_CHECK_EXEC/**< Duplicate RAM strings, if not dupl. before.*/
};
#define Z_LOG_PRINTK(...) do { \
if (IS_ENABLED(CONFIG_LOG_MINIMAL) || !IS_ENABLED(CONFIG_LOG2)) { \
z_log_minimal_printk(__VA_ARGS__); \
break; \
} \
int _mode; \
if (0) {\
z_log_printf_arg_checker(__VA_ARGS__); \
} \
Z_LOG_MSG2_CREATE(!IS_ENABLED(CONFIG_USERSPACE), _mode, \
CONFIG_LOG_DOMAIN_ID, NULL, \
LOG_LEVEL_INTERNAL_RAW_STRING, NULL, 0, __VA_ARGS__);\
} while (0)
/** @brief Get name of the log source.
*
* @param source_id Source ID.
* @return Name.
*/
static inline const char *log_name_get(uint32_t source_id)
{
return __log_const_start[source_id].name;
}
/** @brief Get compiled level of the log source.
*
* @param source_id Source ID.
* @return Level.
*/
static inline uint8_t log_compiled_level_get(uint32_t source_id)
{
return __log_const_start[source_id].level;
}
/** @brief Get index of the log source based on the address of the constant data
* associated with the source.
*
* @param data Address of the constant data.
*
* @return Source ID.
*/
static inline uint32_t log_const_source_id(
const struct log_source_const_data *data)
{
return ((uint8_t *)data - (uint8_t *)__log_const_start)/
sizeof(struct log_source_const_data);
}
/** @brief Get number of registered sources. */
static inline uint32_t log_sources_count(void)
{
return log_const_source_id(__log_const_end);
}
extern struct log_source_dynamic_data __log_dynamic_start[];
extern struct log_source_dynamic_data __log_dynamic_end[];
/** @brief Creates name of variable and section for runtime log data.
*
* @param _name Name.
*/
#define LOG_ITEM_DYNAMIC_DATA(_name) UTIL_CAT(log_dynamic_, _name)
#define LOG_INSTANCE_DYNAMIC_DATA(_module_name, _inst) \
LOG_ITEM_DYNAMIC_DATA(LOG_INSTANCE_FULL_NAME(_module_name, _inst))
/** @brief Get pointer to the filter set of the log source.
*
* @param source_id Source ID.
*
* @return Pointer to the filter set.
*/
static inline uint32_t *log_dynamic_filters_get(uint32_t source_id)
{
return &__log_dynamic_start[source_id].filters;
}
/** @brief Get index of the log source based on the address of the dynamic data
* associated with the source.
*
* @param data Address of the dynamic data.
*
* @return Source ID.
*/
static inline uint32_t log_dynamic_source_id(struct log_source_dynamic_data *data)
{
return ((uint8_t *)data - (uint8_t *)__log_dynamic_start)/
sizeof(struct log_source_dynamic_data);
}
/** @brief Dummy function to trigger log messages arguments type checking. */
static inline __printf_like(1, 2)
void z_log_printf_arg_checker(const char *fmt, ...)
{
ARG_UNUSED(fmt);
}
/** @brief Standard log with no arguments.
*
* @param str String.
* @param src_level Log identification.
*/
void log_0(const char *str, struct log_msg_ids src_level);
/** @brief Standard log with one argument.
*
* @param str String.
* @param arg1 First argument.
* @param src_level Log identification.
*/
void log_1(const char *str,
log_arg_t arg1,
struct log_msg_ids src_level);
/** @brief Standard log with two arguments.
*
* @param str String.
* @param arg1 First argument.
* @param arg2 Second argument.
* @param src_level Log identification.
*/
void log_2(const char *str,
log_arg_t arg1,
log_arg_t arg2,
struct log_msg_ids src_level);
/** @brief Standard log with three arguments.
*
* @param str String.
* @param arg1 First argument.
* @param arg2 Second argument.
* @param arg3 Third argument.
* @param src_level Log identification.
*/
void log_3(const char *str,
log_arg_t arg1,
log_arg_t arg2,
log_arg_t arg3,
struct log_msg_ids src_level);
/** @brief Standard log with arguments list.
*
* @param str String.
* @param args Array with arguments.
* @param narg Number of arguments in the array.
* @param src_level Log identification.
*/
void log_n(const char *str,
log_arg_t *args,
uint32_t narg,
struct log_msg_ids src_level);
/** @brief Hexdump log.
*
* @param str String.
* @param data Data.
* @param length Data length.
* @param src_level Log identification.
*/
void log_hexdump(const char *str, const void *data, uint32_t length,
struct log_msg_ids src_level);
/** @brief Process log message synchronously.
*
* @param src_level Log message details.
* @param fmt String to format.
* @param ... Variable list of arguments.
*/
void log_string_sync(struct log_msg_ids src_level, const char *fmt, ...);
/** @brief Process log hexdump message synchronously.
*
* @param src_level Log message details.
* @param metadata Raw string associated with the data.
* @param data Data.
* @param len Data length.
*/
void log_hexdump_sync(struct log_msg_ids src_level, const char *metadata,
const void *data, uint32_t len);
/**
* @brief Writes a generic log message to the log.
*
* @note This function is intended to be used when porting other log systems.
*
* @param src_level Log identification.
* @param fmt String to format.
* @param ap Poiner to arguments list.
* @param strdup_action Manages strdup activity.
*/
void log_generic(struct log_msg_ids src_level, const char *fmt, va_list ap,
enum log_strdup_action strdup_action);
/**
* @brief Writes a generic log message to the logging v2.
*
* @note This function is intended to be used when porting other log systems.
*
* @param level Log level..
* @param fmt String to format.
* @param ap Poiner to arguments list.
*/
static inline void log2_generic(uint8_t level, const char *fmt, va_list ap)
{
z_log_msg2_runtime_vcreate(CONFIG_LOG_DOMAIN_ID, NULL, level,
NULL, 0, fmt, ap);
}
/**
* @brief Returns number of arguments visible from format string.
*
* @note This function is intended to be used when porting other log systems.
*
* @param fmt Format string.
*
* @return Number of arguments.
*/
uint32_t log_count_args(const char *fmt);
/**
* @brief Writes a generic log message to the log from user mode.
*
* @note This function is intended to be used internally
* by the logging subsystem.
*/
void log_generic_from_user(struct log_msg_ids src_level,
const char *fmt, va_list ap);
/** @brief Check if address belongs to the memory pool used for transient.
*
* @param buf Buffer.
*
* @return True if address within the pool, false otherwise.
*/
bool log_is_strdup(const void *buf);
/** @brief Free allocated buffer.
*
* @param buf Buffer.
*/
void log_free(void *buf);
/**
* @brief Get maximal number of simultaneously allocated buffers for string
* duplicates.
*
* Value can be used to determine pool size.
*/
uint32_t log_get_strdup_pool_utilization(void);
/**
* @brief Get length of the longest string duplicated.
*
* Value can be used to determine buffer size in the string duplicates pool.
*/
uint32_t log_get_strdup_longest_string(void);
/** @brief Indicate to the log core that one log message has been dropped.
*/
void z_log_dropped(void);
/** @brief Read and clear current drop indications counter.
*
* @return Dropped count.
*/
uint32_t z_log_dropped_read_and_clear(void);
/** @brief Check if there are any pending drop notifications.
*
* @retval true Pending unreported drop indications.
* @retval false No pending unreported drop indications.
*/
bool z_log_dropped_pending(void);
/** @brief Log a message from user mode context.
*
* @note This function is intended to be used internally
* by the logging subsystem.
*
* @param src_level Log identification.
* @param fmt String to format.
* @param ... Variable list of arguments.
*/
void __printf_like(2, 3) log_from_user(struct log_msg_ids src_level,
const char *fmt, ...);
/* Internal function used by log_from_user(). */
__syscall void z_log_string_from_user(uint32_t src_level_val, const char *str);
/**
* @brief Create mask with occurences of a string format specifiers (%s).
*
* Result is stored as the mask (argument n is n'th bit). Bit is set if string
* format specifier was found.
*
* @param str String.
* @param nargs Number of arguments in the string.
*
* @return Mask with %s format specifiers found.
*/
uint32_t z_log_get_s_mask(const char *str, uint32_t nargs);
/** @brief Log binary data (displayed as hexdump) from user mode context.
*
* @note This function is intended to be used internally
* by the logging subsystem.
*
* @param src_level Log identification.
* @param metadata Raw string associated with the data.
* @param data Data.
* @param len Data length.
*/
void log_hexdump_from_user(struct log_msg_ids src_level, const char *metadata,
const void *data, uint32_t len);
/* Internal function used by log_hexdump_from_user(). */
__syscall void z_log_hexdump_from_user(uint32_t src_level_val,
const char *metadata,
const uint8_t *data, uint32_t len);
/******************************************************************************/
/********** Mocros _VA operate on var-args parameters. ***************/
/********* Intended to be used when porting other log systems. ***************/
/********* Shall be used in the log entry interface function. ***************/
/********* Speed optimized for up to three arguments number. ***************/
/******************************************************************************/
#define Z_LOG_VA(_level, _str, _valist, _argnum, _strdup_action)\
__LOG_VA(_level, \
__log_current_const_data, \
__log_current_dynamic_data, \
_str, _valist, _argnum, _strdup_action)
#define __LOG_VA(_level, _source, _dsource, _str, _valist, _argnum, _strdup_action) do { \
if (!Z_LOG_CONST_LEVEL_CHECK(_level)) { \
break; \
} \
if (IS_ENABLED(CONFIG_LOG_MINIMAL)) { \
Z_LOG_TO_VPRINTK(_level, _str, _valist); \
break; \
} \
\
bool is_user_context = k_is_user_context(); \
uint32_t filters = IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
_dsource->filters : 0;\
if (IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) && !is_user_context && \
_level > Z_LOG_RUNTIME_FILTER(filters)) { \
break; \
} \
if (IS_ENABLED(CONFIG_LOG2)) { \
z_log_msg2_runtime_vcreate(CONFIG_LOG_DOMAIN_ID, _source, \
_level, NULL, 0, _str, _valist); \
break; \
} \
uint16_t _id = \
IS_ENABLED(CONFIG_LOG_RUNTIME_FILTERING) ? \
LOG_DYNAMIC_ID_GET(_dsource) : LOG_CONST_ID_GET(_source);\
struct log_msg_ids src_level = { \
.level = _level, \
.domain_id = CONFIG_LOG_DOMAIN_ID, \
.source_id = _id \
}; \
__LOG_INTERNAL_VA(is_user_context, \
src_level, \
_str, _valist, _argnum, \
_strdup_action); \
} while (false)
/**
* @brief Inline function to perform strdup, used in __LOG_INTERNAL_VA macro
*
* @note This function is intended to be used when porting other log systems.
*
* @param msk Bitmask marking all %s arguments.
* @param idx Index of actually processed argument.
* @param param Value of actually processed argument.
* @param action Action for strdup operation.
*
* @return Duplicated string or not changed param.
*/
static inline log_arg_t z_log_do_strdup(uint32_t msk, uint32_t idx,
log_arg_t param,
enum log_strdup_action action)
{
#ifndef CONFIG_LOG_MINIMAL
char *z_log_strdup(const char *str);
if (msk & (1 << idx)) {
const char *str = (const char *)param;
/* is_rodata(str) is not checked,
* because log_strdup does it.
* Hence, we will do only optional check
* if already not duplicated.
*/
if (action == LOG_STRDUP_EXEC || !log_is_strdup(str)) {
param = (log_arg_t)z_log_strdup(str);
}
}
#else
ARG_UNUSED(msk);
ARG_UNUSED(idx);
ARG_UNUSED(action);
#endif
return param;
}
#define __LOG_INTERNAL_VA(is_user_context, _src_level, _str, _valist, \
_argnum, _strdup_action) \
do { \
if (is_user_context) { \
log_generic_from_user(_src_level, _str, _valist); \
} else if (IS_ENABLED(CONFIG_LOG_IMMEDIATE)) { \
log_generic(_src_level, _str, _valist, _strdup_action); \
} else if (_argnum == 0) { \
_LOG_INTERNAL_0(_src_level, _str); \
} else { \
uint32_t mask = (_strdup_action != LOG_STRDUP_SKIP) ? \
z_log_get_s_mask(_str, _argnum) \
: 0; \
\
if (_argnum == 1) { \
_LOG_INTERNAL_1(_src_level, _str, \
z_log_do_strdup(mask, 0, \
va_arg(_valist, log_arg_t), _strdup_action));\
} else if (_argnum == 2) { \
_LOG_INTERNAL_2(_src_level, _str, \
z_log_do_strdup(mask, 0, \
va_arg(_valist, log_arg_t), _strdup_action), \
z_log_do_strdup(mask, 1, \
va_arg(_valist, log_arg_t), _strdup_action));\
} else if (_argnum == 3) { \
_LOG_INTERNAL_3(_src_level, _str, \
z_log_do_strdup(mask, 0, \
va_arg(_valist, log_arg_t), _strdup_action), \
z_log_do_strdup(mask, 1, \
va_arg(_valist, log_arg_t), _strdup_action), \
z_log_do_strdup(mask, 2, \
va_arg(_valist, log_arg_t), _strdup_action));\
} else { \
log_generic(_src_level, _str, _valist, _strdup_action);\
} \
} \
} while (false)
#include <syscalls/log_core.h>
#ifdef __cplusplus
}
#endif
#endif /* ZEPHYR_INCLUDE_LOGGING_LOG_CORE_H_ */
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