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