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/*
* BIRD Library
*
* (c) 1998 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 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)
/* Functions which don't return */
#define NORET __attribute__((noreturn))
/* Logging and dying */
void log(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 "\004" /* Local warnings */
#define L_ERR "\005" /* Local errors */
#define L_AUTH "\006" /* Authorization failed etc. */
#define L_FATAL "\007" /* Fatal errors */
#define L_BUG "\010" /* BIRD bugs */
void log_init(char *); /* Initialize logging to given file (NULL=stderr, ""=syslog) */
void log_init_debug(char *); /* Initialize debug dump to given file (NULL=stderr, ""=off) */
void debug(char *msg, ...); /* Printf to debug output */
/* Debugging */
#ifdef LOCAL_DEBUG
#define DBG(x, y...) debug(x, ##y)
#else
#define DBG(x, y...)
#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
#endif
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