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 #define CYCLES_STATS_DECLARE(name,nbins,divisor)                            \
  44     static const int CYCLES_STATS_##name##_MAX = (nbins);                   \
  45     static const int CYCLES_STATS_##name##_DIV = (divisor);                 \
  46     static u4 cycles_stats_##name##_bins[(nbins) + 1] = { 0 };              \
  47     static u4 cycles_stats_##name##_count = 0;                              \
  48     static u8 cycles_stats_##name##_max = 0;                                \
  49     static u8 cycles_stats_##name##_min = 1000000000;
  50
  51 #define CYCLES_STATS_GET(var)                                               \
  52         (var) = asm_get_cycle_count()                                           \
  53
  54 #define CYCLES_STATS_COUNT(name,cyclesexpr)                                 \
  55     do {                                                                    \
  56         u8 cyc = (cyclesexpr);                                              \
  57         if (cyc > cycles_stats_##name##_max)                                \
  58             cycles_stats_##name##_max = cyc;                                \
  59         if (cyc < cycles_stats_##name##_min)                                \
  60             cycles_stats_##name##_min = cyc;                                \
  61         cyc /= CYCLES_STATS_##name##_DIV;                                   \
  62         if (cyc < CYCLES_STATS_##name##_MAX)                                \
  63             cycles_stats_##name##_bins[cyc]++;                              \
  64         else                                                                \
  65             cycles_stats_##name##_bins[CYCLES_STATS_##name##_MAX]++;        \
  66         cycles_stats_##name##_count++;                                      \
  67     } while (0)
  68
  69 #define CYCLES_STATS_PRINT(name,file)                                       \
  70     do {                                                                    \
  71         s4 local_i;                                                         \
  72         fprintf(file,"\t%s: %u calls\n",                                    \
  73                 #name, cycles_stats_##name##_count);                        \
  74         fprintf(file,"\t%s cycles distribution:\n", #name);                 \
  75         fprintf(file,"\t\tmin = %llu\n",                                    \
  76                 (unsigned long long)cycles_stats_##name##_min);             \
  77         for (local_i=0; local_i<CYCLES_STATS_##name##_MAX; ++local_i) {     \
  78             fprintf(file,"\t\t<  %5d: %u\n",                                \
  79                     (local_i+1) * CYCLES_STATS_##name##_DIV,                \
  80                     cycles_stats_##name##_bins[local_i]);                   \
  81         }                                                                   \
  82         fprintf(file,"\t\t>= %5d: %u\n",                                    \
  83                 CYCLES_STATS_##name##_MAX * CYCLES_STATS_##name##_DIV,      \
  84                 cycles_stats_##name##_bins[local_i]);                       \
  85         fprintf(file,"\t\tmax = %llu\n",                                    \
  86                 (unsigned long long)cycles_stats_##name##_max);             \
  87     } while (0)
  88
  89
  90 #else /* !defined(ENABLE_CYCLES_STATS) */
  91
  92 #define CYCLES_STATS_DECLARE(name,nbins,divisor)
  93 #define CYCLES_STATS_GET(var)
  94 #define CYCLES_STATS_COUNT(name,cyclesexpr)
  95 #define CYCLES_STATS_PRINT(name,file)
  96
  97 #endif /* defined(ENABLE_CYCLES_STATS) */
  98
  99 #endif /* _CYCLES_STATS_H */
 100
 101 /*
 102  * These are local overrides for various environment variables in Emacs.
 103  * Please do not remove this and leave it at the end of the file, where
 104  * Emacs will automagically detect them.
 105  * ---------------------------------------------------------------------
 106  * Local variables:
 107  * mode: c
 108  * indent-tabs-mode: t
 109  * c-basic-offset: 4
 110  * tab-width: 4
 111  * End:
 112  * vim:noexpandtab:sw=4:ts=4:
 113  */