sys/sys/cdefs.h

   1 #ifndef _CDEFS_H_
   2 #define _CDEFS_H_
   3
   4 /*
   5  * various compiler macros and common functions
   6  */
   7
   8 #ifndef __packed
   9 #define __packed       __attribute__ ((__packed__))
  10 #endif
  11
  12 #ifndef __aligned
  13 #define __aligned(x) __attribute__((__aligned__(x)))
  14 #endif
  15
  16 /* defined as assert */
  17 void panic(const char *fmt, ...);
  18
  19 #define KASSERT(exp,msg) do {                                           \
  20         if (__predict_false(!(exp)))                                    \
  21                 panic msg;                                              \
  22 } while (0)
  23
  24 /* don't bother to optimize */
  25 #ifndef __predict_false
  26 #define __predict_false(x)   (x)        /* __builtin_expect((exp), 0) */
  27 #endif
  28
  29 #endif /* !_CDEFS_H_ */