terom@8: 
terom@8: /*
terom@8:  * error handling
terom@8:  */
terom@8: 
terom@23: void _generic_err ( /*int level, */ int use_stderr, const char *func, int perr, const char *fmt, ...)
terom@23:         __attribute__ ((format (printf, 4, 5)));
terom@19: 
terom@19: // needs to be defined as its own function for the noreturn attribute
terom@23: void _generic_err_exit ( /* int level, */ int used_stderr, const char *func, int perr, const char *fmt, ...)
terom@23:         __attribute__ ((format (printf, 4, 5)))
terom@19:         __attribute__ ((noreturn));
terom@19: 
terom@20: enum _debug_level {
terom@20:     DEBUG_FATAL,
terom@20:     DEBUG_ERROR,
terom@20:     DEBUG_WARNING,
terom@20:     DEBUG_INFO,
terom@20:     DEBUG_DEBUG,
terom@20: };
terom@20: 
terom@23: // not currently used
terom@20: extern enum _debug_level _cur_debug_level;
terom@8: 
terom@12: // various kinds of ways to handle an error, 2**3 of them, *g*
terom@23: #define info(...)                   _generic_err(       0,  NULL,   0,  __VA_ARGS__ )
terom@23: #define error(...)                  _generic_err(       1,  NULL,   0,  __VA_ARGS__ )
terom@23: #define err_exit(...)               _generic_err_exit(  1,  NULL,   0,  __VA_ARGS__ )
terom@23: #define perr(...)                   _generic_err(       1,  NULL,   1,  __VA_ARGS__ )
terom@23: #define perr_exit(...)              _generic_err_exit(  1,  NULL,   1,  __VA_ARGS__ )
terom@23: #define err_func(func, ...)         _generic_err(       1,  func,   0,  __VA_ARGS__ )
terom@23: #define err_func_exit(func, ...)    _generic_err_exit(  1,  func,   0,  __VA_ARGS__ )
terom@23: #define perr_func(func, ...)        _generic_err(       1,  func,   1,  __VA_ARGS__ )
terom@23: #define perr_func_exit(func, ...)   _generic_err_exit(  1,  func,   1,  __VA_ARGS__ )
terom@11: 
terom@11: // error(func + colon + msg, ...) + goto error
terom@12: #define ERROR(...) do { err_func(__func__, __VA_ARGS__); goto error; } while (0)
terom@12: #define PERROR(...) do { perr_func(__func__, __VA_ARGS__); goto error; } while (0)
terom@12: #define FATAL(...) err_func_exit(__func__, __VA_ARGS__)
terom@12: #define PFATAL(...) perr_func_exit(__func__, __VA_ARGS__)
terom@12: #define WARNING(...) err_func(__func__, __VA_ARGS__)
terom@12: #define PWARNING(...) perr_func(__func__, __VA_ARGS__)
terom@11: 
terom@20: #ifdef DEBUG_ENABLED
terom@20: #define DEBUG(...) err_func(__func__, __VA_ARGS__)
terom@20: #else
terom@24: #define DEBUG(...) (void) (0)
terom@20: #endif
terom@20: 
terom@23: // default is to enable INFO
terom@25: #ifdef INFO_DISABLED
terom@25:     #define INFO_ENABLED 0
terom@25: #else
terom@25:     #ifndef INFO_ENABLED
terom@25:         #define INFO_ENABLED 1
terom@25:     #endif
terom@23: #endif
terom@23: 
terom@23: #if INFO_ENABLED
terom@23: #define INFO(...) info(__VA_ARGS__)
terom@23: #else
terom@24: #define INFO(...) (void) (0)
terom@23: #endif
terom@23: