log_level_t
/* OFF is a special level that can be used to turn off logging. */
log_level_t* LOG_OFF;
/* SEVERE is a message level indicating a serious failure. */
log_level_t* LOG_SEVERE;
/* WARNING is a message level indicating a potential problem. */
log_level_t* LOG_WARNING;
/* CONFIG is a message level for static configuration messages.*/
log_level_t* LOG_CONFIG;
/* INFO is a message level for informational messages. */
log_level_t* LOG_INFO;
/* FINE is a message level providing tracing information. */
log_level_t* LOG_FINE;
/* FINER indicates a fairly detailed tracing message. */
log_level_t* LOG_FINER;
/* FINEST indicates a highly detailed tracing message. */
log_level_t* LOG_FINEST;
/* ALL indicates that all messages should be logged. */
log_level_t* LOG_ALL;