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

   1 /*
   2  * Copyright (C) 1995-2008 University of Karlsruhe.  All right reserved.
   3  *
   4  * This file is part of libFirm.
   5  *
   6  * This file may be distributed and/or modified under the terms of the
   7  * GNU General Public License version 2 as published by the Free Software
   8  * Foundation and appearing in the file LICENSE.GPL included in the
   9  * packaging of this file.
  10  *
  11  * Licensees holding valid libFirm Professional Edition licenses may use
  12  * this file in accordance with the libFirm Commercial License.
  13  * Agreement provided with the Software.
  14  *
  15  * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
  16  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  17  * PURPOSE.
  18  */
  19
  20 /**
  21  * @file
  22  * @brief   OS abstraction from time measurement
  23  * @author  Sebastian Hack, Michael Beck, Matthias Braun
  24  * @version $Id$
  25  */
  26 #ifndef FIRM_STAT_TIMING_H
  27 #define FIRM_STAT_TIMING_H
  28
  29 #if defined(__i386__) || defined(_M_IX86)
  30
  31 #if defined(__GNUC__)
  32 typedef unsigned long long timing_ticks_t;
  33 static inline timing_ticks_t __timing_ticks(void) { timing_ticks_t result; __asm__ __volatile__ ("rdtsc" : "=A" (result)); return result; }
  34 #elif defined(_MSC_VER)
  35 /* win32 implementation using rdtsc */
  36 typedef unsigned __int64 timing_ticks_t;
  37 static __inline timing_ticks_t __timing_ticks(void) { __asm { rdtsc } }
  38 #else
  39 #error need a 64bit int type
  40 #endif
  41
  42 #define timing_ticks(t)              ((t) = __timing_ticks())
  43 #define timing_ticks_init(t)         ((t) = 0)
  44 #define timing_ticks_cmp(a, b, cmp)  ((a) cmp (b))
  45 #define timing_ticks_sub(r, a)       ((r) = (r) - (a))
  46 #define timing_ticks_add(r, a)       ((r) = (r) + (a))
  47 #define timing_ticks_ulong(t)        ((unsigned long) (t))
  48 #define timing_ticks_dbl(t)          ((double) (t))
  49
  50 #else /* !__i386__ */
  51
  52 #include <sys/time.h>
  53
  54 typedef struct timeval timing_ticks_t;
  55 #define timing_ticks(t)              (gettimeofday(&(t), NULL))
  56 #define timing_ticks_init(t)         memset(&(t), 0, sizeof(t))
  57
  58 /*
  59  * This shamelessly stolen and modified from glibc's
  60  * /usr/include/sys/time.h
  61  */
  62 #define timing_ticks_cmp(a, b, CMP)   \
  63   (((a).tv_sec == (b).tv_sec) ?           \
  64    ((a).tv_usec CMP (b).tv_usec) :    \
  65    ((a).tv_sec CMP (b).tv_sec))
  66
  67 #define timing_ticks_add(r, a)                       \
  68         do {                                                                     \
  69                 (r).tv_sec = (r).tv_sec + (a).tv_sec;        \
  70                 (r).tv_usec = (r).tv_usec + (a).tv_usec;     \
  71                 if ((r).tv_usec >= 1000000) {                        \
  72                         ++(r).tv_sec;                            \
  73                         (r).tv_usec -= 1000000;                  \
  74                 }                                                                                \
  75         } while (0)
  76
  77 #define timing_ticks_sub(r, a)                        \
  78         do {                                                                              \
  79                 (r).tv_sec = (r).tv_sec - (a).tv_sec;         \
  80                 (r).tv_usec = (r).tv_usec - (a).tv_usec;      \
  81                 if ((r).tv_usec < 0) {                                        \
  82                         --(r).tv_sec;                                                 \
  83                         (r).tv_usec += 1000000;                                   \
  84                 }                                                                                 \
  85         } while (0)
  86
  87 #define timing_ticks_ulong(t)        ((unsigned long) ((t).tv_usec + 1000000 * (t).tv_sec))
  88 #define timing_ticks_dbl(t)          (((t).tv_usec + 1000000.0 * (t).tv_sec))
  89
  90 #endif
  91
  92 void timing_enter_max_prio(void);
  93 void timing_leave_max_prio(void);
  94
  95 #endif