src/vm/rt-timing.c

   1 /* src/vm/rt-timing.c - POSIX real-time timing utilities
   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
  36 #include "config.h"
  37 #include "vm/types.h"
  38
  39 #include <assert.h>
  40 #include <errno.h>
  41 #include <stdlib.h>
  42 #include <time.h>
  43
  44 #include "vm/rt-timing.h"
  45 #include "mm/memory.h"
  46 #include "vm/global.h"
  47
  48 struct rt_timing_stat {
  49         int index;
  50         int totalindex;
  51         const char *name;
  52 };
  53
  54 static struct rt_timing_stat rt_timing_stat_defs[] = {
  55     { RT_TIMING_JIT_CHECKS      ,RT_TIMING_JIT_TOTAL , "checks at beginning" },
  56     { RT_TIMING_JIT_PARSE       ,RT_TIMING_JIT_TOTAL , "parse" },
  57     { RT_TIMING_JIT_STACK       ,RT_TIMING_JIT_TOTAL , "analyse_stack" },
  58     { RT_TIMING_JIT_TYPECHECK   ,RT_TIMING_JIT_TOTAL , "typecheck" },
  59     { RT_TIMING_JIT_LOOP        ,RT_TIMING_JIT_TOTAL , "loop" },
  60     { RT_TIMING_JIT_IFCONV      ,RT_TIMING_JIT_TOTAL , "if conversion" },
  61     { RT_TIMING_JIT_ALLOC       ,RT_TIMING_JIT_TOTAL , "register allocation" },
  62     { RT_TIMING_JIT_RPLPOINTS   ,RT_TIMING_JIT_TOTAL , "replacement point generation" },
  63     { RT_TIMING_JIT_CODEGEN     ,RT_TIMING_JIT_TOTAL , "codegen" },
  64     { RT_TIMING_JIT_TOTAL       ,-1                  , "total compile time" },
  65     { -1                        ,-1                  , "" },
  66
  67     { RT_TIMING_LINK_RESOLVE    ,RT_TIMING_LINK_TOTAL, "link: resolve superclass/superinterfaces"},
  68     { RT_TIMING_LINK_C_VFTBL    ,RT_TIMING_LINK_TOTAL, "link: compute vftbl length"},
  69     { RT_TIMING_LINK_ABSTRACT   ,RT_TIMING_LINK_TOTAL, "link: handle abstract methods"},
  70     { RT_TIMING_LINK_C_IFTBL    ,RT_TIMING_LINK_TOTAL, "link: compute interface table"},
  71     { RT_TIMING_LINK_F_VFTBL    ,RT_TIMING_LINK_TOTAL, "link: fill vftbl"},
  72     { RT_TIMING_LINK_OFFSETS    ,RT_TIMING_LINK_TOTAL, "link: set offsets"},
  73     { RT_TIMING_LINK_F_IFTBL    ,RT_TIMING_LINK_TOTAL, "link: fill interface table"},
  74     { RT_TIMING_LINK_FINALIZER  ,RT_TIMING_LINK_TOTAL, "link: set finalizer"},
  75     { RT_TIMING_LINK_EXCEPTS    ,RT_TIMING_LINK_TOTAL, "link: resolve exception classes"},
  76     { RT_TIMING_LINK_SUBCLASS   ,RT_TIMING_LINK_TOTAL, "link: re-calculate subclass indices"},
  77     { RT_TIMING_LINK_TOTAL      ,-1                  , "total link time" },
  78     { -1                        ,-1                  , "" },
  79
  80         { RT_TIMING_LOAD_CHECKS     ,RT_TIMING_LOAD_TOTAL, "load: initial checks"},
  81         { RT_TIMING_LOAD_NDPOOL     ,RT_TIMING_LOAD_TOTAL, "load: new descriptor pool"},
  82         { RT_TIMING_LOAD_CPOOL      ,RT_TIMING_LOAD_TOTAL, "load: load constant pool"},
  83         { RT_TIMING_LOAD_SETUP      ,RT_TIMING_LOAD_TOTAL, "load: class setup"},
  84         { RT_TIMING_LOAD_FIELDS     ,RT_TIMING_LOAD_TOTAL, "load: load fields"},
  85         { RT_TIMING_LOAD_METHODS    ,RT_TIMING_LOAD_TOTAL, "load: load methods"},
  86         { RT_TIMING_LOAD_CLASSREFS  ,RT_TIMING_LOAD_TOTAL, "load: create classrefs"},
  87         { RT_TIMING_LOAD_DESCS      ,RT_TIMING_LOAD_TOTAL, "load: allocate descriptors"},
  88         { RT_TIMING_LOAD_SETREFS    ,RT_TIMING_LOAD_TOTAL, "load: set classrefs"},
  89         { RT_TIMING_LOAD_PARSEFDS   ,RT_TIMING_LOAD_TOTAL, "load: parse field descriptors"},
  90         { RT_TIMING_LOAD_PARSEMDS   ,RT_TIMING_LOAD_TOTAL, "load: parse method descriptors"},
  91         { RT_TIMING_LOAD_PARSECP    ,RT_TIMING_LOAD_TOTAL, "load: parse descriptors in constant pool"},
  92         { RT_TIMING_LOAD_VERIFY     ,RT_TIMING_LOAD_TOTAL, "load: verifier checks"},
  93         { RT_TIMING_LOAD_ATTRS      ,RT_TIMING_LOAD_TOTAL, "load: load attributes"},
  94         { RT_TIMING_LOAD_TOTAL      ,-1                  , "total load time (from classbuffer)"},
  95     { -1                        ,-1                  , "" },
  96
  97         { RT_TIMING_LOAD_BOOT_LOOKUP,-1                       , "boot: lookup in classcache"},
  98         { RT_TIMING_LOAD_BOOT_ARRAY ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: load array classes"},
  99         { RT_TIMING_LOAD_BOOT_SUCK  ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: suck class files"},
 100         { RT_TIMING_LOAD_BOOT_LOAD  ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: load from class buffer"},
 101         { RT_TIMING_LOAD_BOOT_CACHE ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: store in classcache"},
 102         { RT_TIMING_LOAD_BOOT_TOTAL ,-1                       , "total bootstrap loader time"},
 103     { -1                        ,-1                       , "" },
 104
 105         { RT_TIMING_LOAD_CL_LOOKUP  ,-1                       , "classloader: lookup in classcache" },
 106         { RT_TIMING_LOAD_CL_PREPARE ,-1                       , "classloader: prepare loader call" },
 107         { RT_TIMING_LOAD_CL_JAVA    ,-1                       , "classloader: loader Java code" },
 108         { RT_TIMING_LOAD_CL_CACHE   ,-1                       , "classloader: store in classcache" },
 109     { -1                        ,-1                       , "" },
 110
 111         { RT_TIMING_NEW_OBJECT      ,-1                       , "builtin_new time" },
 112         { RT_TIMING_NEW_ARRAY       ,-1                       , "builtin_newarray time" },
 113     { -1                        ,-1                       , "" },
 114
 115     { 0                         ,-1                       , NULL }
 116 };
 117
 118 static long long rt_timing_sum[RT_TIMING_N] = { 0 };
 119
 120 void rt_timing_gettime(struct timespec *ts)
 121 {
 122         if (clock_gettime(CLOCK_THREAD_CPUTIME_ID,ts) != 0) {
 123                 fprintf(stderr,"could not get time by clock_gettime: %s\n",strerror(errno));
 124                 abort();
 125         }
 126 }
 127
 128 static long rt_timing_diff_usec(struct timespec *a,struct timespec *b)
 129 {
 130         long diff;
 131         time_t atime;
 132
 133         diff = (b->tv_nsec - a->tv_nsec) / 1000;
 134         atime = a->tv_sec;
 135         while (atime < b->tv_sec) {
 136                 atime++;
 137                 diff += 1000000;
 138         }
 139         return diff;
 140 }
 141
 142 void rt_timing_time_diff(struct timespec *a,struct timespec *b,int index)
 143 {
 144         long diff;
 145
 146         diff = rt_timing_diff_usec(a,b);
 147         rt_timing_sum[index] += diff;
 148 }
 149
 150 void rt_timing_print_time_stats(FILE *file)
 151 {
 152         struct rt_timing_stat *stats;
 153         double total;
 154
 155         for (stats = rt_timing_stat_defs; stats->name; ++stats) {
 156                 if (stats->index < 0) {
 157                         fprintf(file,"%s\n",stats->name);
 158                         continue;
 159                 }
 160
 161                 if (stats->totalindex >= 0) {
 162                         total = rt_timing_sum[stats->totalindex];
 163                         fprintf(file,"%12lld usec %3.0f%% %s\n",
 164                                         rt_timing_sum[stats->index],
 165                                         (total != 0.0) ? rt_timing_sum[stats->index] / total * 100.0 : 0.0,
 166                                         stats->name);
 167                 }
 168                 else {
 169                         fprintf(file,"%12lld usec      %s\n",
 170                                         rt_timing_sum[stats->index],
 171                                         stats->name);
 172                 }
 173         }
 174 }
 175
 176 /*
 177  * These are local overrides for various environment variables in Emacs.
 178  * Please do not remove this and leave it at the end of the file, where
 179  * Emacs will automagically detect them.
 180  * ---------------------------------------------------------------------
 181  * Local variables:
 182  * mode: c
 183  * indent-tabs-mode: t
 184  * c-basic-offset: 4
 185  * tab-width: 4
 186  * End:
 187  * vim:noexpandtab:sw=4:ts=4:
 188  */