Generic Logging Interface

This library offers a C interface for logging data.

It offers generic ifx_logger_t struct that can be populated by concrete implementations. These ifx_logger_t struct are self-contained and can therefore be nested, joined, etc.

The actual ifx_logger_log() function uses printf syntax so it should feel familiar to C developers.

Example

#include "infineon/ifx-logger.h"
 
// Log source information reusable across e.g. library
#define IFX_LOG_TAG "example"
 
// Logger can be populated by any concrete implementation
ifx_logger_t logger;
 
// No more implementation specific functionality
ifx_logger_set_level(&logger, IFX_LOG_INFO);
ifx_logger_log(&logger, IFX_LOG_TAG, IFX_LOG_WARN, "Something happened");
ifx_logger_log(&logger, IFX_LOG_TAG, IFX_LOG_INFO, "The answer to life, the universe, and everything is: %d", 42);
ifx_logger_destroy(&logger);

Default Logger

Wherever possible it is recommended that libraries keep track of the used logger instance themselves (e.g. via struct member). This enables configurable log configurations / levels across library layers. Where keeping track of this logger is not possible a default logger can be set using ifx_logger_set_default(). This default logger is then available via ifx_logger_default that can be passed to any log function.

#include <stdio.h>
#include "infineon/ifx-logger.h"
#include "infineon/ifx-logger-file.h"
 
ifx_logger_log(ifx_logger_default, "test", IFX_LOG_INFO, "This should NOT be logged");
 
// Update default logger
ifx_logger_t logger;
ifx_logger_file_initialize(&logger, stdout);
ifx_logger_set_level(&logger, IFX_LOG_INFO);
ifx_logger_set_default(&logger);
 
ifx_logger_log(ifx_logger_default, "test", IFX_LOG_INFO, "This SHOULD be logged");