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log_instance.h
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/*
* Copyright (c) 2018 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_LOGGING_LOG_INSTANCE_H_
#define ZEPHYR_INCLUDE_LOGGING_LOG_INSTANCE_H_
#include <zephyr/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/** @brief Constant data associated with the source of log messages. */
struct log_source_const_data {
const char *name;
u8_t level;
#ifdef CONFIG_NIOS2
/* Workaround alert! Dummy data to ensure that structure is >8 bytes.
* Nios2 uses global pointer register for structures <=8 bytes and
* apparently does not handle well variables placed in custom sections.
*/
u32_t dummy;
#endif
};
/** @brief Dynamic data associated with the source of log messages. */
struct log_source_dynamic_data {
u32_t filters;
#ifdef CONFIG_NIOS2
/* Workaround alert! Dummy data to ensure that structure is >8 bytes.
* Nios2 uses global pointer register for structures <=8 bytes and
* apparently does not handle well variables placed in custom sections.
*/
u32_t dummy[2];
#endif
};
/** @brief Creates name of variable and section for constant log data.
*
* @param _name Name.
*/
#define LOG_ITEM_CONST_DATA(_name) UTIL_CAT(log_const_, _name)
#define _LOG_CONST_ITEM_REGISTER(_name, _str_name, _level) \
const struct log_source_const_data LOG_ITEM_CONST_DATA(_name) \
__attribute__ ((section("." STRINGIFY(LOG_ITEM_CONST_DATA(_name))))) \
__attribute__((used)) = { \
.name = _str_name, \
.level = (_level), \
}
/** @def LOG_INSTANCE_PTR_DECLARE
* @brief Macro for declaring a logger instance pointer in the module structure.
*/
/** @def LOG_INSTANCE_REGISTER
* @brief Macro for registering instance for logging with independent filtering.
*
* Module instance provides filtering of logs on instance level instead of
* module level.
*/
/** @def LOG_INSTANCE_PTR_INIT
* @brief Macro for initializing a pointer to the logger instance.
*/
/** @} */
#ifdef CONFIG_LOG
#define LOG_INSTANCE_FULL_NAME(_module_name, _inst_name) \
UTIL_CAT(_module_name, UTIL_CAT(_, _inst_name))
#if CONFIG_LOG_RUNTIME_FILTERING
#define LOG_INSTANCE_PTR_DECLARE(_name) \
struct log_source_dynamic_data *_name
#define LOG_INSTANCE_REGISTER(_module_name, _inst_name, _level) \
_LOG_CONST_ITEM_REGISTER( \
LOG_INSTANCE_FULL_NAME(_module_name, _inst_name), \
STRINGIFY(_module_name._inst_name), \
_level); \
struct log_source_dynamic_data LOG_INSTANCE_DYNAMIC_DATA( \
_module_name, _inst_name) \
__attribute__ ((section("." STRINGIFY( \
LOG_INSTANCE_DYNAMIC_DATA(_module_name, \
_inst_name) \
) \
))) __attribute__((used))
#define LOG_INSTANCE_PTR_INIT(_name, _module_name, _inst_name) \
._name = &LOG_ITEM_DYNAMIC_DATA( \
LOG_INSTANCE_FULL_NAME(_module_name, _inst_name)),
#else /* CONFIG_LOG_RUNTIME_FILTERING */
#define LOG_INSTANCE_PTR_DECLARE(_name) \
const struct log_source_const_data *_name
#define LOG_INSTANCE_REGISTER(_module_name, _inst_name, _level) \
_LOG_CONST_ITEM_REGISTER( \
LOG_INSTANCE_FULL_NAME(_module_name, _inst_name), \
STRINGIFY(_module_name._inst_name), \
_level)
#define LOG_INSTANCE_PTR_INIT(_name, _module_name, _inst_name) \
._name = &LOG_ITEM_CONST_DATA( \
LOG_INSTANCE_FULL_NAME(_module_name, _inst_name)),
#endif /* CONFIG_LOG_RUNTIME_FILTERING */
#else /* CONFIG_LOG */
#define LOG_INSTANCE_PTR_DECLARE(_name) /* empty */
#define LOG_INSTANCE_REGISTER(_module_name, _inst_name, _level) /* empty */
#define LOG_INSTANCE_PTR_INIT(_name, _module_name, _inst_name) /* empty */
#endif
#ifdef __cplusplus
}
#endif
#endif /* ZEPHYR_INCLUDE_LOGGING_LOG_INSTANCE_H_ */