nsz Git - libfirm/blob - ir/stat/stat_timing.h

   1 /*
   2  * This file is part of libFirm.
   3  * Copyright (C) 2012 University of Karlsruhe.
   4  */
   5
   6 /**
   7  * @file
   8  * @brief   OS abstraction from time measurement
   9  * @author  Sebastian Hack, Michael Beck, Matthias Braun
  10  */
  11 #ifndef FIRM_STAT_TIMING_H
  12 #define FIRM_STAT_TIMING_H
  13
  14 #if defined(__i386__) || defined(_M_IX86) || defined(_M_X64)
  15
  16 #if defined(__GNUC__)
  17 typedef unsigned long long timing_ticks_t;
  18 static inline timing_ticks_t __timing_ticks(void)
  19 {
  20         unsigned h;
  21         unsigned l;
  22         __asm__ volatile("rdtsc" : "=a" (l), "=d" (h));
  23         return (timing_ticks_t)h << 32 | l;
  24 }
  25
  26 #elif defined(_MSC_VER)
  27 #include <intrin.h>
  28
  29 typedef unsigned __int64 timing_ticks_t;
  30 static __inline timing_ticks_t __timing_ticks(void) { return __rdtsc(); }
  31 #else
  32 #error need a 64bit int type
  33 #endif
  34
  35 #define timing_ticks(t)              ((t) = __timing_ticks())
  36 #define timing_ticks_init(t)         ((t) = 0)
  37 #define timing_ticks_cmp(a, b, cmp)  ((a) cmp (b))
  38 #define timing_ticks_sub(r, a)       ((r) = (r) - (a))
  39 #define timing_ticks_add(r, a)       ((r) = (r) + (a))
  40 #define timing_ticks_ulong(t)        ((unsigned long) (t))
  41 #define timing_ticks_dbl(t)          ((double) (t))
  42
  43 #else /* !__i386__ && !__x86_64 */
  44
  45 #include <sys/time.h>
  46
  47 typedef struct timeval timing_ticks_t;
  48 #define timing_ticks(t)              (gettimeofday(&(t), NULL))
  49 #define timing_ticks_init(t)         memset(&(t), 0, sizeof(t))
  50
  51 /*
  52  * This shamelessly stolen and modified from glibc's
  53  * /usr/include/sys/time.h
  54  */
  55 #define timing_ticks_cmp(a, b, CMP)   \
  56   (((a).tv_sec == (b).tv_sec) ?       \
  57    ((a).tv_usec CMP (b).tv_usec) :    \
  58    ((a).tv_sec CMP (b).tv_sec))
  59
  60 #define timing_ticks_add(r, a)                       \
  61         do {                                             \
  62                 (r).tv_sec = (r).tv_sec + (a).tv_sec;        \
  63                 (r).tv_usec = (r).tv_usec + (a).tv_usec;     \
  64                 if ((r).tv_usec >= 1000000) {                \
  65                         ++(r).tv_sec;                            \
  66                         (r).tv_usec -= 1000000;                  \
  67                 }                                            \
  68         } while (0)
  69
  70 #define timing_ticks_sub(r, a)                        \
  71         do {                                              \
  72                 (r).tv_sec = (r).tv_sec - (a).tv_sec;         \
  73                 (r).tv_usec = (r).tv_usec - (a).tv_usec;      \
  74                 if ((r).tv_usec < 0) {                        \
  75                         --(r).tv_sec;                             \
  76                         (r).tv_usec += 1000000;                   \
  77                 }                                             \
  78         } while (0)
  79
  80 #define timing_ticks_ulong(t)        ((unsigned long) ((t).tv_usec + 1000000 * (t).tv_sec))
  81 #define timing_ticks_dbl(t)          (((t).tv_usec + 1000000.0 * (t).tv_sec))
  82
  83 #endif
  84
  85 void timing_enter_max_prio(void);
  86 void timing_leave_max_prio(void);
  87
  88 #endif