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 #ifdef __i386__
  30
  31 #ifdef __GNUC__
  32
  33 typedef unsigned long long timing_ticks_t;
  34 static inline timing_ticks_t __timing_ticks(void) { timing_ticks_t result; __asm__ __volatile__ ("rdtsc" : "=A" (result)); return result; }
  35 #else
  36 #if define _MSC_VER
  37 /* win32 implementation using rdtsc */
  38 typedef unsigned __int64 timing_ticks_t;
  39 static __inline timing_ticks_t __timing_ticks(void) { __asm { rdtsc } }
  40 #else
  41 #error need a 64bit int type
  42 #endif
  43 #endif
  44
  45 #define timing_ticks(t)              ((t) = __timing_ticks())
  46 #define timing_ticks_init(t)         ((t) = 0)
  47 #define timing_ticks_cmp(a, b, cmp)  ((a) cmp (b))
  48 #define timing_ticks_sub(r, a)       ((r) = (r) - (a))
  49 #define timing_ticks_add(r, a)       ((r) = (r) + (a))
  50 #define timing_ticks_ulong(t)        ((unsigned long) (t))
  51 #define timing_ticks_dbl(t)          ((double) (t))
  52
  53 #else /* !__i386__ */
  54
  55 #include <sys/time.h>
  56
  57 typedef struct timeval timing_ticks_t;
  58 #define timing_ticks(t)              (gettimeofday(&(t), NULL))
  59 #define timing_ticks_init(t)         ((t).tv_sec = 0, (t).tv_usec = 0)
  60
  61 /*
  62  * This shamelessly stolen and modified from glibc's
  63  * /usr/include/sys/time.h
  64  */
  65 #define timing_ticks_cmp(a, b, CMP)   \
  66   (((a).tv_sec == (b).tv_sec) ?           \
  67    ((a).tv_usec CMP (b).tv_usec) :    \
  68    ((a).tv_sec CMP (b).tv_sec))
  69
  70 #define timing_ticks_add(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 >= 1000000) {                        \
  75                         ++(r).tv_sec;                            \
  76                         (r).tv_usec -= 1000000;                  \
  77                 }                                                                                \
  78         } while (0)
  79
  80 #define timing_ticks_sub(r, a)                        \
  81         do {                                                                              \
  82                 (r).tv_sec = (r).tv_sec - (a).tv_sec;         \
  83                 (r).tv_usec = (r).tv_usec - (a).tv_usec;      \
  84                 if ((r).tv_usec < 0) {                                        \
  85                         --(r).tv_sec;                                                 \
  86                         (r).tv_usec += 1000000;                                   \
  87                 }                                                                                 \
  88         } while (0)
  89
  90 #define timing_ticks_ulong(t)        ((unsigned long) ((t).tv_usec + 1000000 * (t).tv_sec))
  91 #define timing_ticks_dbl(t)          (((t).tv_usec + 1000000.0 * (t).tv_sec))
  92
  93 #endif
  94
  95 void timing_enter_max_prio(void);
  96 void timing_leave_max_prio(void);
  97
  98 #endif