src/vm/cycles-stats.h

   1 /* src/vm/cycles-stats.h - macros for cycle count statistics
   2
   3    Copyright (C) 1996-2005, 2006 R. Grafl, A. Krall, C. Kruegel,
   4    C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
   5    E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
   6    J. Wenninger, Institut f. Computersprachen - TU Wien
   7
   8    This file is part of CACAO.
   9
  10    This program is free software; you can redistribute it and/or
  11    modify it under the terms of the GNU General Public License as
  12    published by the Free Software Foundation; either version 2, or (at
  13    your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful, but
  16    WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18    General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  23    02110-1301, USA.
  24
  25    Contact: cacao@cacaojvm.org
  26
  27    Authors: Edwin Steiner
  28
  29    Changes:
  30
  31    $Id$
  32
  33 */
  34
  35 #ifndef _CYCLES_STATS_H
  36 #define _CYCLES_STATS_H
  37
  38 #include "config.h"
  39 #include "vm/types.h"
  40
  41 #if defined(ENABLE_CYCLES_STATS)
  42
  43 #include <stdio.h>
  44
  45 #define CYCLES_STATS_DECLARE(name,nbins,divisor)                            \
  46     static const int CYCLES_STATS_##name##_MAX = (nbins);                   \
  47     static const int CYCLES_STATS_##name##_DIV = (divisor);                 \
  48     static u4 cycles_stats_##name##_bins[(nbins) + 1] = { 0 };              \
  49     static u4 cycles_stats_##name##_count = 0;                              \
  50     static u8 cycles_stats_##name##_total = 0;                              \
  51     static u8 cycles_stats_##name##_max = 0;                                \
  52     static u8 cycles_stats_##name##_min = 1000000000;
  53
  54 #define CYCLES_STATS_GET(var)                                               \
  55         (var) = asm_get_cycle_count()                                           \
  56
  57 #define CYCLES_STATS_COUNT(name,cyclesexpr)                                 \
  58     do {                                                                    \
  59         u8 cyc = (cyclesexpr);                                              \
  60                 cycles_stats_##name##_total += cyc;                                 \
  61         if (cyc > cycles_stats_##name##_max)                                \
  62             cycles_stats_##name##_max = cyc;                                \
  63         if (cyc < cycles_stats_##name##_min)                                \
  64             cycles_stats_##name##_min = cyc;                                \
  65         cyc /= CYCLES_STATS_##name##_DIV;                                   \
  66         if (cyc < CYCLES_STATS_##name##_MAX)                                \
  67             cycles_stats_##name##_bins[cyc]++;                              \
  68         else                                                                \
  69             cycles_stats_##name##_bins[CYCLES_STATS_##name##_MAX]++;        \
  70         cycles_stats_##name##_count++;                                      \
  71     } while (0)
  72
  73 #define CYCLES_STATS_COUNT_OVER(name,ovname,cyclesexpr)                     \
  74     do {                                                                    \
  75         u8 cyc = (cyclesexpr);                                              \
  76         if (cyc / CYCLES_STATS_##name##_DIV >= CYCLES_STATS_##name##_MAX)   \
  77             CYCLES_STATS_COUNT(ovname,cyc);                                 \
  78     } while (0)
  79
  80 #define CYCLES_STATS_PRINT(name,file)                                       \
  81     do {                                                                    \
  82         cycles_stats_print((file), #name,                                   \
  83             CYCLES_STATS_##name##_MAX, CYCLES_STATS_##name##_DIV,           \
  84             cycles_stats_##name##_bins, cycles_stats_##name##_count,        \
  85             cycles_stats_##name##_total,                                    \
  86             cycles_stats_##name##_min, cycles_stats_##name##_max, 0);       \
  87     } while (0)
  88
  89 #define CYCLES_STATS_PRINT_OVERHEAD(name,file)                              \
  90     do {                                                                    \
  91         cycles_stats_print((file), #name,                                   \
  92             CYCLES_STATS_##name##_MAX, CYCLES_STATS_##name##_DIV,           \
  93             cycles_stats_##name##_bins, cycles_stats_##name##_count,        \
  94             cycles_stats_##name##_total,                                    \
  95             cycles_stats_##name##_min, cycles_stats_##name##_max, 1);       \
  96     } while (0)
  97
  98 #define CYCLES_STATS_DECLARE_AND_START                                      \
  99     u8 cycles_start = asm_get_cycle_count();                                \
 100     u8 cycles_end;
 101
 102 #define CYCLES_STATS_DECLARE_AND_START_WITH_OVERHEAD                        \
 103     u8 cycles_start = asm_get_cycle_count();                                \
 104     u8 cycles_overhead = asm_get_cycle_count();                             \
 105     u8 cycles_end;
 106
 107 #define CYCLES_STATS_END(name)                                              \
 108     cycles_end = asm_get_cycle_count();                                     \
 109     CYCLES_STATS_COUNT(name, cycles_end - cycles_start);
 110
 111 #define CYCLES_STATS_END_WITH_OVERHEAD(name,ovname)                         \
 112     cycles_end = asm_get_cycle_count();                                     \
 113     CYCLES_STATS_COUNT(ovname, cycles_overhead - cycles_start);             \
 114     CYCLES_STATS_COUNT(name, cycles_end - cycles_overhead);
 115
 116 void cycles_stats_print(FILE *file,
 117                                             const char *name, int nbins, int div,
 118                                             u4 *bins, u8 count, u8 total, u8 min, u8 max,
 119                                                 int overhead);
 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  */