author | Tero Marttila <terom@fixme.fi> |
Wed, 27 May 2009 23:57:48 +0300 | |
branch | new-lib-errors |
changeset 217 | 7728d6ec3abf |
parent 216 | src/log.h@a10ba529ae39 |
permissions | -rw-r--r-- |
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#ifndef LOG_H |
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#define LOG_H |
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/** @file log.h |
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* |
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* Local logging functions |
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*/ |
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#include "error.h" |
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#include <stdarg.h> |
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/** |
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* Log level definitions |
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* |
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* XXX: these names conflict with <syslog.h> |
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*/ |
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enum log_level { |
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LOG_DEBUG, |
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LOG_INFO, |
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LOG_WARN, |
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LOG_ERROR, |
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LOG_FATAL, |
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}; |
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/** |
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* List of log_level values as strings, NULL-terminated |
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*/ |
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extern const char *log_level_names[]; |
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/** |
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* The default log level |
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*/ |
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#define LOG_LEVEL_DEFAULT LOG_INFO |
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/** |
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* Maximum length of a log message, including terminating NUL |
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*/ |
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#define LOG_MSG_MAX 1024 |
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/** |
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* Log output function, for displaying a line of text, without any trailing newline. |
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*/ |
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typedef void (*log_output_func) (const char *line, void *arg); |
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/** |
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* Set the current log level to filter out messages below the given level |
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*/ |
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void set_log_level (enum log_level level); |
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/** |
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* Set the current log output function, replacing any default or previous value. |
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* |
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* Pass in func as NULL to revert to the default handler. |
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*/ |
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void log_set_func (log_output_func func, void *arg); |
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/** |
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* Internal logging func, meant for using custom level tags. This performs the filtering of log levels. |
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* |
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* Format the full output line, and pass it to the log_output_func. The line will be of the form: |
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* "[<tag>] <func> : <user_fmt> [ <log_fmt> ]" |
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*/ |
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void log_output_tag (enum log_level level, const char *tag, const char *func, const char *user_fmt, va_list user_fmtargs, const char *log_fmt, ...) |
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__attribute__ ((format (printf, 6, 7))); |
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/** |
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* va_list version of log_output_tag |
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void log_output_tag_va (enum log_level level, const char *tag, const char *func, const char *user_fmt, va_list user_fmtargs, const char *log_fmt, va_list log_fmtargs); |
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/** |
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* Log a message with the given level |
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*/ |
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#define log_msg(level, ...) _log_msg(level, __func__, __VA_ARGS__) |
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void _log_msg (enum log_level level, const char *func, const char *format, ...) |
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__attribute__ ((format (printf, 3, 4))); |
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/** |
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* Log a message with the given level with the given format and varargs |
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#define log_msg_va2(level, fmt1, vargs1, fmt2, vargs2) _log_msg_va(level, __func__, fmt1, vargs1, fmt2, vargs2) |
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void _log_msg_va2 (enum log_level level, const char *func, const char *fmt1, va_list fmtargs1, const char *fmt2, va_list fmtargs2); |
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/** |
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* Shorthand for log_msg |
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*/ |
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#define log_debug(...) log_msg(LOG_DEBUG, __VA_ARGS__) |
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#define log_info(...) log_msg(LOG_INFO, __VA_ARGS__) |
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#define log_warn(...) log_msg(LOG_WARN, __VA_ARGS__) |
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/* #define log_error(...) log_msg(LOG_ERROR, __func__, __VA_ARGS__) */ |
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#define log_fatal(...) log_msg(LOG_FATAL, __VA_ARGS__) |
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/** |
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* Log a message with the given level, appending the formatted error code name |
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*/ |
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#define log_err(err_list, err_code, ...) _log_err(LOG_ERROR, err_list, err_code, __func__, __VA_ARGS__) |
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#define log_warn_err(err_list, err_code, ...) _log_err(LOG_WARN, err_list, err_code, __func__, __VA_ARGS__) |
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void _log_err (enum log_level level, const struct error_list *list, err_t code, const char *func, const char *format, ...) |
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__attribute__ ((format (printf, 5, 6))); |
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/** |
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* Log a message with the given level, appending the formatted error message |
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*/ |
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#define log_error(err_info, ...) _log_error(LOG_ERROR, err_info, __func__, __VA_ARGS__) |
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#define log_warn_error(err_info, ...) _log_error(LOG_WARN, err_info, __func__, __VA_ARGS__) |
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void _log_error (enum log_level level, const error_t *err, const char *func, const char *format, ...) |
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__attribute__ ((format (printf, 4, 5))); |
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/** |
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* Log using errno. |
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*/ |
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#define log_perr(...) _log_perr(LOG_ERROR, __func__, __VA_ARGS__) |
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void _log_perr (enum log_level level, const char *func, const char *format, ...) |
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__attribute__ ((format (printf, 3, 4))); |
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/** |
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* Log with an [EXIT] tag at given level, and then exit with given exit code |
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*/ |
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#define log_exit(level, exit_code, ...) _log_exit(level, exit_code, __func__, __VA_ARGS__) |
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void _log_exit (enum log_level level, int exit_code, const char *func, const char *format, ...) |
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__attribute__ ((format (printf, 4, 5))) |
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__attribute__ ((noreturn)); |
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/** |
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* log_fatal + exit failure |
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*/ |
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#define FATAL(...) do { log_fatal(__VA_ARGS__); abort(); } while (0) |
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/** |
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* log_err + exit failure |
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*/ |
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#define FATAL_ERR(err_code, ...) do { _log_err(LOG_FATAL, err_code, __func__, __VA_ARGS__); abort(); } while (0) |
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/** |
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* log_err_info + exit failure |
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*/ |
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#define FATAL_ERROR(err_info, ...) do { _log_error(LOG_FATAL, err_info, __func__, __VA_ARGS__); abort(); } while (0) |
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/** |
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* log_perr + exit failure |
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*/ |
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#define FATAL_PERROR(...) do { _log_perr(LOG_FATAL, __func__, __VA_ARGS__); abort(); } while (0) |
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/** |
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* Exit with given code, also logging a message at LOG_INFO with anĀ [EXIT] tag |
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*/ |
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#define EXIT_INFO(exit_code, ...) log_exit(LOG_INFO, exit_code, __VA_ARGS__) |
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#define EXIT_WARN(exit_code, ...) log_exit(LOG_WARN, exit_code, __VA_ARGS__) |
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#define EXIT_ERROR(exit_code, ...) log_exit(LOG_ERROR, exit_code, __VA_ARGS__) |
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#define EXIT_FATAL(exit_code, ...) log_exit(LOG_FATAL, exit_code, __VA_ARGS__) |
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21 | 153 |
#endif /* LOG_H */ |