src/vm/cycles-stats.h

   1 /* src/vm/cycles-stats.h - macros for cycle count statistics
   2
   3    Copyright (C) 1996-2005, 2006, 2009
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25 #ifndef _CYCLES_STATS_H
  26 #define _CYCLES_STATS_H
  27
  28 #include "config.h"
  29 #include "vm/types.h"
  30
  31 #if defined(ENABLE_CYCLES_STATS)
  32
  33 #include <stdio.h>
  34
  35 #include "md.h"
  36
  37 #define CYCLES_STATS_DECLARE(name,nbins,divisor)                            \
  38     static const int CYCLES_STATS_##name##_MAX = (nbins);                   \
  39     static const int CYCLES_STATS_##name##_DIV = (divisor);                 \
  40     static u4 cycles_stats_##name##_bins[(nbins) + 1] = { 0 };              \
  41     static u4 cycles_stats_##name##_count = 0;                              \
  42     static u8 cycles_stats_##name##_total = 0;                              \
  43     static u8 cycles_stats_##name##_max = 0;                                \
  44     static u8 cycles_stats_##name##_min = 1000000000;
  45
  46 #define CYCLES_STATS_GET(var)                                               \
  47         (var) = md_get_cycle_count()                                            \
  48
  49 #define CYCLES_STATS_COUNT(name,cyclesexpr)                                 \
  50     do {                                                                    \
  51         u8 cyc = (cyclesexpr);                                              \
  52                 cycles_stats_##name##_total += cyc;                                 \
  53         if (cyc > cycles_stats_##name##_max)                                \
  54             cycles_stats_##name##_max = cyc;                                \
  55         if (cyc < cycles_stats_##name##_min)                                \
  56             cycles_stats_##name##_min = cyc;                                \
  57         cyc /= CYCLES_STATS_##name##_DIV;                                   \
  58         if (cyc < CYCLES_STATS_##name##_MAX)                                \
  59             cycles_stats_##name##_bins[cyc]++;                              \
  60         else                                                                \
  61             cycles_stats_##name##_bins[CYCLES_STATS_##name##_MAX]++;        \
  62         cycles_stats_##name##_count++;                                      \
  63     } while (0)
  64
  65 #define CYCLES_STATS_COUNT_OVER(name,ovname,cyclesexpr)                     \
  66     do {                                                                    \
  67         u8 cyc = (cyclesexpr);                                              \
  68         if (cyc / CYCLES_STATS_##name##_DIV >= CYCLES_STATS_##name##_MAX)   \
  69             CYCLES_STATS_COUNT(ovname,cyc);                                 \
  70     } while (0)
  71
  72 #define CYCLES_STATS_PRINT(name,file)                                       \
  73     do {                                                                    \
  74         cycles_stats_print((file), #name,                                   \
  75             CYCLES_STATS_##name##_MAX, CYCLES_STATS_##name##_DIV,           \
  76             cycles_stats_##name##_bins, cycles_stats_##name##_count,        \
  77             cycles_stats_##name##_total,                                    \
  78             cycles_stats_##name##_min, cycles_stats_##name##_max, 0);       \
  79     } while (0)
  80
  81 #define CYCLES_STATS_PRINT_OVERHEAD(name,file)                              \
  82     do {                                                                    \
  83         cycles_stats_print((file), #name,                                   \
  84             CYCLES_STATS_##name##_MAX, CYCLES_STATS_##name##_DIV,           \
  85             cycles_stats_##name##_bins, cycles_stats_##name##_count,        \
  86             cycles_stats_##name##_total,                                    \
  87             cycles_stats_##name##_min, cycles_stats_##name##_max, 1);       \
  88     } while (0)
  89
  90 #define CYCLES_STATS_DECLARE_AND_START                                      \
  91     u8 cycles_start = md_get_cycle_count();                                 \
  92     u8 cycles_end;
  93
  94 #define CYCLES_STATS_DECLARE_AND_START_WITH_OVERHEAD                        \
  95     u8 cycles_start = md_get_cycle_count();                                 \
  96     u8 cycles_overhead = md_get_cycle_count();                              \
  97     u8 cycles_end;
  98
  99 #define CYCLES_STATS_END(name)                                              \
 100     cycles_end = md_get_cycle_count();                                      \
 101     CYCLES_STATS_COUNT(name, cycles_end - cycles_start);
 102
 103 #define CYCLES_STATS_END_WITH_OVERHEAD(name,ovname)                         \
 104     cycles_end = md_get_cycle_count();                                      \
 105     CYCLES_STATS_COUNT(ovname, cycles_overhead - cycles_start);             \
 106     CYCLES_STATS_COUNT(name, cycles_end - cycles_overhead);
 107
 108 #ifdef __cplusplus
 109 extern "C" {
 110 #endif
 111
 112 void cycles_stats_print(FILE *file,
 113                                             const char *name, int nbins, int div,
 114                                             u4 *bins, u8 count, u8 total, u8 min, u8 max,
 115                                                 int overhead);
 116
 117 #ifdef __cplusplus
 118 }
 119 #endif
 120
 121
 122 #else /* !defined(ENABLE_CYCLES_STATS) */
 123
 124 #define CYCLES_STATS_DECLARE(name,nbins,divisor)
 125 #define CYCLES_STATS_GET(var)
 126 #define CYCLES_STATS_COUNT(name,cyclesexpr)
 127 #define CYCLES_STATS_COUNT_OVER(name,ovname,cyclesexpr)
 128 #define CYCLES_STATS_PRINT(name,file)
 129 #define CYCLES_STATS_PRINT_OVERHEAD(name,file)
 130 #define CYCLES_STATS_DECLARE_AND_START
 131 #define CYCLES_STATS_DECLARE_AND_START_WITH_OVERHEAD
 132 #define CYCLES_STATS_END(name)
 133 #define CYCLES_STATS_END_WITH_OVERHEAD(name,ovname)
 134
 135 #endif /* defined(ENABLE_CYCLES_STATS) */
 136
 137 #endif /* _CYCLES_STATS_H */
 138
 139 /*
 140  * These are local overrides for various environment variables in Emacs.
 141  * Please do not remove this and leave it at the end of the file, where
 142  * Emacs will automagically detect them.
 143  * ---------------------------------------------------------------------
 144  * Local variables:
 145  * mode: c
 146  * indent-tabs-mode: t
 147  * c-basic-offset: 4
 148  * tab-width: 4
 149  * End:
 150  * vim:noexpandtab:sw=4:ts=4:
 151  */