/* * BIRD Library * * (c) 1998--2004 Martin Mares <mj@ucw.cz> * * Can be freely distributed and used under the terms of the GNU GPL. */ #ifndef _BIRD_BIRDLIB_H_ #define _BIRD_BIRDLIB_H_ /* Ugly structure offset handling macros */ #define OFFSETOF(s, i) ((unsigned int)&((s *)0)->i) #define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i))) #define BIRD_ALIGN(s, a) (((s)+a-1)&~(a-1)) /* Utility macros */ #define MIN(a,b) (((a)<(b))?(a):(b)) #define MAX(a,b) (((a)>(b))?(a):(b)) #define ABS(a) ((a)>=0 ? (a) : -(a)) #define ARRAY_SIZE(a) (sizeof(a)/sizeof(*(a))) #ifndef NULL #define NULL ((void *) 0) #endif /* Macros for gcc attributes */ #define NORET __attribute__((noreturn)) #define UNUSED __attribute__((unused)) /* Logging and dying */ #define log log_msg void log_msg(char *msg, ...); void die(char *msg, ...) NORET; void bug(char *msg, ...) NORET; #define L_DEBUG "\001" /* Debugging messages */ #define L_TRACE "\002" /* Protocol tracing */ #define L_INFO "\003" /* Informational messages */ #define L_REMOTE "\004" /* Remote protocol errors */ #define L_WARN "\005" /* Local warnings */ #define L_ERR "\006" /* Local errors */ #define L_AUTH "\007" /* Authorization failed etc. */ #define L_FATAL "\010" /* Fatal errors */ #define L_BUG "\011" /* BIRD bugs */ void debug(char *msg, ...); /* Printf to debug output */ /* Debugging */ #if defined(LOCAL_DEBUG) || defined(GLOBAL_DEBUG) #define DBG(x, y...) debug(x, ##y) #else #define DBG(x, y...) do { } while(0) #endif #ifdef DEBUGGING #define ASSERT(x) do { if (!(x)) bug("Assertion `%s' failed at %s:%d", #x, __FILE__, __LINE__); } while(0) #else #define ASSERT(x) do { } while(0) #endif /* Pseudorandom numbers */ u32 random_u32(void); #endif