Logging functions

group log

Actia library log control

Typedefs

typedef void (*a_log_function)(a_log_level level, const char *format, va_list ap)

Logger function prototype.

For use with a_log_set_logger().

Param level:

The log level of the message

Param format:

printf-style format string

Param ap:

printf arguments

Enums

enum a_log_level

Actia library log levels

Values:

enumerator A_LOG_DEBUG

Debug info

enumerator A_LOG_INFO

Ordinary event

enumerator A_LOG_WARNING

Ordinary event, but not quite expected (e.g. bad frame)

enumerator A_LOG_ERROR

Extraordinary event.

enumerator A_LOG_FATAL

Extreme event. Application will abort immediately.

Functions

void a_log_set_logger(a_log_function function)

Set Actia library logging function.

All Actia library log messages will invoke this function to log messages.

Note: This setting only affects logs for the instance of the Actia library in the current application. Device system logs are not affected.

Logs are sent to syslog by default ( a_log_syslog_logger() ).

The built-in logger functions are named a_log_*_logger().

Parameters:

• function – Function that will be called for each log message

void a_log_syslog_logger(a_log_level level, const char *format, va_list ap)

Syslog logger.

Sends all messages to the syslog, mapping the log level.

See also

a_log_set_logger()

void a_log_stdout_logger(a_log_level level, const char *format, va_list ap)

Standard output logger.

Sends all messages to standard output (stdout), prefixed with the log level.

See also

a_log_set_logger()

void a_log_stderr_logger(a_log_level level, const char *format, va_list ap)

Standard error logger.

Sends all messages to standard error (stderr), prefixed with the log level.

See also

a_log_set_logger()