Log Levels

The available log levels are defined in logging/LogLevel.h

FATAL

A message logged with the FATAL log level will abort your program. FATAL log messages cannot be disabled. If you have no log handlers configured when a FATAL message is logged it will be printed to stderr, to ensure that your program does not abort silently.

DFATAL

The DFATAL log level is similar to FATAL, but only aborts your program in debug builds (if the NDEBUG preprocessor macro was not defined at build time).

CRITICAL

CRITICAL is intended for important error messages. It falls in between ERR and FATAL.

ERR

ERR is intended for error messages. This category is named ERR rather than ERROR due to the fact that common Windows header files #define ERROR as a preprocessor macro.

WARN, aka WARNING

WARN is intended for warning messages. WARNING is accepted as an alternate name for WARN.

INFO

INFO is intended for informational messages.

DBG0 through DBG9

There are 10 numbered debug message categories, DBG0, DBG1, DBG2, ..., DBG9.

Note that DBG0 is a more important log level than DBG9. The number next to the debug level can be thought of as its verbosity: the higher the debug level the more verbose it is. Setting a log category's level to DBG5 will enable log messages with levels DBG0 through DBG5 (as well as higher levels such as INFO and above), while messages at level DBG6 through DBG9 will be disabled.

DEBUG

The DEBUG category falls below DBG9.

Setting a log category's level to DEBUG will automatically enable all numbered DBG levels.