debug.h

   1 /*
   2  * Copyright 2004-2005 Timo Hirvonen
   3  */
   4
   5 #ifndef DEBUG_H
   6 #define DEBUG_H
   7
   8 #include <compiler.h>
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include <errno.h>
  13 #include <sys/time.h>
  14 #include <inttypes.h>
  15
  16 #if !defined(DEBUG)
  17 #error DEBUG not defined
  18 #endif
  19
  20 #if DEBUG < 0
  21 #error DEBUG must be >= 0
  22 #endif
  23
  24 void debug_init(void);
  25 void __debug_bug(const char *function, const char *fmt, ...) __FORMAT(2, 3) __NORETURN;
  26 void __debug_print(const char *function, const char *fmt, ...) __FORMAT(2, 3);
  27
  28 /* ------------------------------------------------------------------------ */
  29
  30 #if DEBUG == 0
  31
  32 #define BUG(...) do { } while (0)
  33
  34 #else /* >0 */
  35
  36 #define BUG(...) __debug_bug(__FUNCTION__, __VA_ARGS__)
  37
  38 #endif
  39
  40 /* ------------------------------------------------------------------------ */
  41
  42 #if DEBUG == 0 || DEBUG == 1
  43
  44 #define d_print(...) do { } while (0)
  45
  46 static inline void timer_get(uint64_t *usec)
  47 {
  48         *usec = 0;
  49 }
  50
  51 static inline void timer_print(const char *what, uint64_t usec)
  52 {
  53 }
  54
  55 #else /* >1 */
  56
  57 #define d_print(...) __debug_print(__FUNCTION__, __VA_ARGS__)
  58
  59 static inline void timer_get(uint64_t *usec)
  60 {
  61         struct timeval tv;
  62
  63         gettimeofday(&tv, NULL);
  64         *usec = tv.tv_sec * 1e6L + tv.tv_usec;
  65 }
  66
  67 static inline void timer_print(const char *what, uint64_t usec)
  68 {
  69         uint64_t a = usec / 1e6;
  70         uint64_t b = usec - a * 1e6;
  71
  72         __debug_print("TIMER", "%s: %11Lu.%06Lu\n", what, a, b);
  73 }
  74
  75 #endif
  76
  77 /* ------------------------------------------------------------------------ */
  78
  79 #define __STR(a) #a
  80
  81 #define BUG_ON(a) \
  82 do { \
  83         if (unlikely(a)) \
  84                 BUG("%s\n", __STR(a)); \
  85 } while (0)
  86
  87 #endif