src/vmcore/rt-timing.c

   1 /* src/vmcore/rt-timing.c - POSIX real-time timing utilities
   2
   3    Copyright (C) 1996-2005, 2006, 2007 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 */
  26
  27
  28 #include "config.h"
  29
  30 #include <assert.h>
  31 #include <errno.h>
  32 #include <stdlib.h>
  33 #include <time.h>
  34
  35 #include "vm/types.h"
  36
  37 #include "mm/memory.h"
  38
  39 #include "vm/global.h"
  40
  41 #include "vmcore/rt-timing.h"
  42
  43
  44 struct rt_timing_stat {
  45         int index;
  46         int totalindex;
  47         const char *name;
  48 };
  49
  50 static struct rt_timing_stat rt_timing_stat_defs[] = {
  51     { RT_TIMING_JIT_CHECKS      ,RT_TIMING_JIT_TOTAL , "checks at beginning" },
  52     { RT_TIMING_JIT_PARSE       ,RT_TIMING_JIT_TOTAL , "parse" },
  53     { RT_TIMING_JIT_STACK       ,RT_TIMING_JIT_TOTAL , "analyse_stack" },
  54     { RT_TIMING_JIT_TYPECHECK   ,RT_TIMING_JIT_TOTAL , "typecheck" },
  55     { RT_TIMING_JIT_LOOP        ,RT_TIMING_JIT_TOTAL , "loop" },
  56     { RT_TIMING_JIT_IFCONV      ,RT_TIMING_JIT_TOTAL , "if conversion" },
  57     { RT_TIMING_JIT_ALLOC       ,RT_TIMING_JIT_TOTAL , "register allocation" },
  58     { RT_TIMING_JIT_RPLPOINTS   ,RT_TIMING_JIT_TOTAL , "replacement point generation" },
  59     { RT_TIMING_JIT_CODEGEN     ,RT_TIMING_JIT_TOTAL , "codegen" },
  60     { RT_TIMING_JIT_TOTAL       ,-1                  , "total compile time" },
  61     { -1                        ,-1                  , "" },
  62
  63     { RT_TIMING_LINK_RESOLVE    ,RT_TIMING_LINK_TOTAL, "link: resolve superclass/superinterfaces"},
  64     { RT_TIMING_LINK_C_VFTBL    ,RT_TIMING_LINK_TOTAL, "link: compute vftbl length"},
  65     { RT_TIMING_LINK_ABSTRACT   ,RT_TIMING_LINK_TOTAL, "link: handle abstract methods"},
  66     { RT_TIMING_LINK_C_IFTBL    ,RT_TIMING_LINK_TOTAL, "link: compute interface table"},
  67     { RT_TIMING_LINK_F_VFTBL    ,RT_TIMING_LINK_TOTAL, "link: fill vftbl"},
  68     { RT_TIMING_LINK_OFFSETS    ,RT_TIMING_LINK_TOTAL, "link: set offsets"},
  69     { RT_TIMING_LINK_F_IFTBL    ,RT_TIMING_LINK_TOTAL, "link: fill interface table"},
  70     { RT_TIMING_LINK_FINALIZER  ,RT_TIMING_LINK_TOTAL, "link: set finalizer"},
  71     { RT_TIMING_LINK_EXCEPTS    ,RT_TIMING_LINK_TOTAL, "link: resolve exception classes"},
  72     { RT_TIMING_LINK_SUBCLASS   ,RT_TIMING_LINK_TOTAL, "link: re-calculate subclass indices"},
  73     { RT_TIMING_LINK_TOTAL      ,-1                  , "total link time" },
  74     { -1                        ,-1                  , "" },
  75
  76         { RT_TIMING_LOAD_CHECKS     ,RT_TIMING_LOAD_TOTAL, "load: initial checks"},
  77         { RT_TIMING_LOAD_NDPOOL     ,RT_TIMING_LOAD_TOTAL, "load: new descriptor pool"},
  78         { RT_TIMING_LOAD_CPOOL      ,RT_TIMING_LOAD_TOTAL, "load: load constant pool"},
  79         { RT_TIMING_LOAD_SETUP      ,RT_TIMING_LOAD_TOTAL, "load: class setup"},
  80         { RT_TIMING_LOAD_FIELDS     ,RT_TIMING_LOAD_TOTAL, "load: load fields"},
  81         { RT_TIMING_LOAD_METHODS    ,RT_TIMING_LOAD_TOTAL, "load: load methods"},
  82         { RT_TIMING_LOAD_CLASSREFS  ,RT_TIMING_LOAD_TOTAL, "load: create classrefs"},
  83         { RT_TIMING_LOAD_DESCS      ,RT_TIMING_LOAD_TOTAL, "load: allocate descriptors"},
  84         { RT_TIMING_LOAD_SETREFS    ,RT_TIMING_LOAD_TOTAL, "load: set classrefs"},
  85         { RT_TIMING_LOAD_PARSEFDS   ,RT_TIMING_LOAD_TOTAL, "load: parse field descriptors"},
  86         { RT_TIMING_LOAD_PARSEMDS   ,RT_TIMING_LOAD_TOTAL, "load: parse method descriptors"},
  87         { RT_TIMING_LOAD_PARSECP    ,RT_TIMING_LOAD_TOTAL, "load: parse descriptors in constant pool"},
  88         { RT_TIMING_LOAD_VERIFY     ,RT_TIMING_LOAD_TOTAL, "load: verifier checks"},
  89         { RT_TIMING_LOAD_ATTRS      ,RT_TIMING_LOAD_TOTAL, "load: load attributes"},
  90         { RT_TIMING_LOAD_TOTAL      ,-1                  , "total load time (from classbuffer)"},
  91     { -1                        ,-1                  , "" },
  92
  93         { RT_TIMING_LOAD_BOOT_LOOKUP,-1                       , "boot: lookup in classcache"},
  94         { RT_TIMING_LOAD_BOOT_ARRAY ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: load array classes"},
  95         { RT_TIMING_LOAD_BOOT_SUCK  ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: suck class files"},
  96         { RT_TIMING_LOAD_BOOT_LOAD  ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: load from class buffer"},
  97         { RT_TIMING_LOAD_BOOT_CACHE ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: store in classcache"},
  98         { RT_TIMING_LOAD_BOOT_TOTAL ,-1                       , "total bootstrap loader time"},
  99     { -1                        ,-1                       , "" },
 100
 101         { RT_TIMING_LOAD_CL_LOOKUP  ,-1                       , "classloader: lookup in classcache" },
 102         { RT_TIMING_LOAD_CL_PREPARE ,-1                       , "classloader: prepare loader call" },
 103         { RT_TIMING_LOAD_CL_JAVA    ,-1                       , "classloader: loader Java code" },
 104         { RT_TIMING_LOAD_CL_CACHE   ,-1                       , "classloader: store in classcache" },
 105     { -1                        ,-1                       , "" },
 106
 107         { RT_TIMING_NEW_OBJECT      ,-1                       , "builtin_new time" },
 108         { RT_TIMING_NEW_ARRAY       ,-1                       , "builtin_newarray time" },
 109     { -1                        ,-1                       , "" },
 110
 111     { 0                         ,-1                       , NULL }
 112 };
 113
 114 static long long rt_timing_sum[RT_TIMING_N] = { 0 };
 115
 116 void rt_timing_gettime(struct timespec *ts)
 117 {
 118         if (clock_gettime(CLOCK_THREAD_CPUTIME_ID,ts) != 0) {
 119                 fprintf(stderr,"could not get time by clock_gettime: %s\n",strerror(errno));
 120                 abort();
 121         }
 122 }
 123
 124 long rt_timing_diff_usec(struct timespec *a,struct timespec *b)
 125 {
 126         long diff;
 127         time_t atime;
 128
 129         diff = (b->tv_nsec - a->tv_nsec) / 1000;
 130         atime = a->tv_sec;
 131         while (atime < b->tv_sec) {
 132                 atime++;
 133                 diff += 1000000;
 134         }
 135         return diff;
 136 }
 137
 138 void rt_timing_time_diff(struct timespec *a,struct timespec *b,int index)
 139 {
 140         long diff;
 141
 142         diff = rt_timing_diff_usec(a,b);
 143         rt_timing_sum[index] += diff;
 144 }
 145
 146 void rt_timing_print_time_stats(FILE *file)
 147 {
 148         struct rt_timing_stat *stats;
 149         double total;
 150
 151         for (stats = rt_timing_stat_defs; stats->name; ++stats) {
 152                 if (stats->index < 0) {
 153                         fprintf(file,"%s\n",stats->name);
 154                         continue;
 155                 }
 156
 157                 if (stats->totalindex >= 0) {
 158                         total = rt_timing_sum[stats->totalindex];
 159                         fprintf(file,"%12lld usec %3.0f%% %s\n",
 160                                         rt_timing_sum[stats->index],
 161                                         (total != 0.0) ? rt_timing_sum[stats->index] / total * 100.0 : 0.0,
 162                                         stats->name);
 163                 }
 164                 else {
 165                         fprintf(file,"%12lld usec      %s\n",
 166                                         rt_timing_sum[stats->index],
 167                                         stats->name);
 168                 }
 169         }
 170 }
 171
 172 /*
 173  * These are local overrides for various environment variables in Emacs.
 174  * Please do not remove this and leave it at the end of the file, where
 175  * Emacs will automagically detect them.
 176  * ---------------------------------------------------------------------
 177  * Local variables:
 178  * mode: c
 179  * indent-tabs-mode: t
 180  * c-basic-offset: 4
 181  * tab-width: 4
 182  * End:
 183  * vim:noexpandtab:sw=4:ts=4:
 184  */