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    $Id$
  26
  27 */
  28
  29
  30 #include "config.h"
  31
  32 #include <assert.h>
  33 #include <errno.h>
  34 #include <stdlib.h>
  35 #include <time.h>
  36
  37 #include "vm/types.h"
  38
  39 #include "mm/memory.h"
  40
  41 #include "vm/global.h"
  42
  43 #include "vmcore/rt-timing.h"
  44
  45
  46 struct rt_timing_stat {
  47         int index;
  48         int totalindex;
  49         const char *name;
  50 };
  51
  52 static struct rt_timing_stat rt_timing_stat_defs[] = {
  53     { RT_TIMING_JIT_CHECKS      ,RT_TIMING_JIT_TOTAL , "checks at beginning" },
  54     { RT_TIMING_JIT_PARSE       ,RT_TIMING_JIT_TOTAL , "parse" },
  55     { RT_TIMING_JIT_STACK       ,RT_TIMING_JIT_TOTAL , "analyse_stack" },
  56     { RT_TIMING_JIT_TYPECHECK   ,RT_TIMING_JIT_TOTAL , "typecheck" },
  57     { RT_TIMING_JIT_LOOP        ,RT_TIMING_JIT_TOTAL , "loop" },
  58     { RT_TIMING_JIT_IFCONV      ,RT_TIMING_JIT_TOTAL , "if conversion" },
  59     { RT_TIMING_JIT_ALLOC       ,RT_TIMING_JIT_TOTAL , "register allocation" },
  60     { RT_TIMING_JIT_RPLPOINTS   ,RT_TIMING_JIT_TOTAL , "replacement point generation" },
  61     { RT_TIMING_JIT_CODEGEN     ,RT_TIMING_JIT_TOTAL , "codegen" },
  62     { RT_TIMING_JIT_TOTAL       ,-1                  , "total compile time" },
  63     { -1                        ,-1                  , "" },
  64
  65     { RT_TIMING_LINK_RESOLVE    ,RT_TIMING_LINK_TOTAL, "link: resolve superclass/superinterfaces"},
  66     { RT_TIMING_LINK_C_VFTBL    ,RT_TIMING_LINK_TOTAL, "link: compute vftbl length"},
  67     { RT_TIMING_LINK_ABSTRACT   ,RT_TIMING_LINK_TOTAL, "link: handle abstract methods"},
  68     { RT_TIMING_LINK_C_IFTBL    ,RT_TIMING_LINK_TOTAL, "link: compute interface table"},
  69     { RT_TIMING_LINK_F_VFTBL    ,RT_TIMING_LINK_TOTAL, "link: fill vftbl"},
  70     { RT_TIMING_LINK_OFFSETS    ,RT_TIMING_LINK_TOTAL, "link: set offsets"},
  71     { RT_TIMING_LINK_F_IFTBL    ,RT_TIMING_LINK_TOTAL, "link: fill interface table"},
  72     { RT_TIMING_LINK_FINALIZER  ,RT_TIMING_LINK_TOTAL, "link: set finalizer"},
  73     { RT_TIMING_LINK_EXCEPTS    ,RT_TIMING_LINK_TOTAL, "link: resolve exception classes"},
  74     { RT_TIMING_LINK_SUBCLASS   ,RT_TIMING_LINK_TOTAL, "link: re-calculate subclass indices"},
  75     { RT_TIMING_LINK_TOTAL      ,-1                  , "total link time" },
  76     { -1                        ,-1                  , "" },
  77
  78         { RT_TIMING_LOAD_CHECKS     ,RT_TIMING_LOAD_TOTAL, "load: initial checks"},
  79         { RT_TIMING_LOAD_NDPOOL     ,RT_TIMING_LOAD_TOTAL, "load: new descriptor pool"},
  80         { RT_TIMING_LOAD_CPOOL      ,RT_TIMING_LOAD_TOTAL, "load: load constant pool"},
  81         { RT_TIMING_LOAD_SETUP      ,RT_TIMING_LOAD_TOTAL, "load: class setup"},
  82         { RT_TIMING_LOAD_FIELDS     ,RT_TIMING_LOAD_TOTAL, "load: load fields"},
  83         { RT_TIMING_LOAD_METHODS    ,RT_TIMING_LOAD_TOTAL, "load: load methods"},
  84         { RT_TIMING_LOAD_CLASSREFS  ,RT_TIMING_LOAD_TOTAL, "load: create classrefs"},
  85         { RT_TIMING_LOAD_DESCS      ,RT_TIMING_LOAD_TOTAL, "load: allocate descriptors"},
  86         { RT_TIMING_LOAD_SETREFS    ,RT_TIMING_LOAD_TOTAL, "load: set classrefs"},
  87         { RT_TIMING_LOAD_PARSEFDS   ,RT_TIMING_LOAD_TOTAL, "load: parse field descriptors"},
  88         { RT_TIMING_LOAD_PARSEMDS   ,RT_TIMING_LOAD_TOTAL, "load: parse method descriptors"},
  89         { RT_TIMING_LOAD_PARSECP    ,RT_TIMING_LOAD_TOTAL, "load: parse descriptors in constant pool"},
  90         { RT_TIMING_LOAD_VERIFY     ,RT_TIMING_LOAD_TOTAL, "load: verifier checks"},
  91         { RT_TIMING_LOAD_ATTRS      ,RT_TIMING_LOAD_TOTAL, "load: load attributes"},
  92         { RT_TIMING_LOAD_TOTAL      ,-1                  , "total load time (from classbuffer)"},
  93     { -1                        ,-1                  , "" },
  94
  95         { RT_TIMING_LOAD_BOOT_LOOKUP,-1                       , "boot: lookup in classcache"},
  96         { RT_TIMING_LOAD_BOOT_ARRAY ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: load array classes"},
  97         { RT_TIMING_LOAD_BOOT_SUCK  ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: suck class files"},
  98         { RT_TIMING_LOAD_BOOT_LOAD  ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: load from class buffer"},
  99         { RT_TIMING_LOAD_BOOT_CACHE ,RT_TIMING_LOAD_BOOT_TOTAL, "boot: store in classcache"},
 100         { RT_TIMING_LOAD_BOOT_TOTAL ,-1                       , "total bootstrap loader time"},
 101     { -1                        ,-1                       , "" },
 102
 103         { RT_TIMING_LOAD_CL_LOOKUP  ,-1                       , "classloader: lookup in classcache" },
 104         { RT_TIMING_LOAD_CL_PREPARE ,-1                       , "classloader: prepare loader call" },
 105         { RT_TIMING_LOAD_CL_JAVA    ,-1                       , "classloader: loader Java code" },
 106         { RT_TIMING_LOAD_CL_CACHE   ,-1                       , "classloader: store in classcache" },
 107     { -1                        ,-1                       , "" },
 108
 109         { RT_TIMING_NEW_OBJECT      ,-1                       , "builtin_new time" },
 110         { RT_TIMING_NEW_ARRAY       ,-1                       , "builtin_newarray time" },
 111     { -1                        ,-1                       , "" },
 112
 113     { 0                         ,-1                       , NULL }
 114 };
 115
 116 static long long rt_timing_sum[RT_TIMING_N] = { 0 };
 117
 118 void rt_timing_gettime(struct timespec *ts)
 119 {
 120         if (clock_gettime(CLOCK_THREAD_CPUTIME_ID,ts) != 0) {
 121                 fprintf(stderr,"could not get time by clock_gettime: %s\n",strerror(errno));
 122                 abort();
 123         }
 124 }
 125
 126 long rt_timing_diff_usec(struct timespec *a,struct timespec *b)
 127 {
 128         long diff;
 129         time_t atime;
 130
 131         diff = (b->tv_nsec - a->tv_nsec) / 1000;
 132         atime = a->tv_sec;
 133         while (atime < b->tv_sec) {
 134                 atime++;
 135                 diff += 1000000;
 136         }
 137         return diff;
 138 }
 139
 140 void rt_timing_time_diff(struct timespec *a,struct timespec *b,int index)
 141 {
 142         long diff;
 143
 144         diff = rt_timing_diff_usec(a,b);
 145         rt_timing_sum[index] += diff;
 146 }
 147
 148 void rt_timing_print_time_stats(FILE *file)
 149 {
 150         struct rt_timing_stat *stats;
 151         double total;
 152
 153         for (stats = rt_timing_stat_defs; stats->name; ++stats) {
 154                 if (stats->index < 0) {
 155                         fprintf(file,"%s\n",stats->name);
 156                         continue;
 157                 }
 158
 159                 if (stats->totalindex >= 0) {
 160                         total = rt_timing_sum[stats->totalindex];
 161                         fprintf(file,"%12lld usec %3.0f%% %s\n",
 162                                         rt_timing_sum[stats->index],
 163                                         (total != 0.0) ? rt_timing_sum[stats->index] / total * 100.0 : 0.0,
 164                                         stats->name);
 165                 }
 166                 else {
 167                         fprintf(file,"%12lld usec      %s\n",
 168                                         rt_timing_sum[stats->index],
 169                                         stats->name);
 170                 }
 171         }
 172 }
 173
 174 /*
 175  * These are local overrides for various environment variables in Emacs.
 176  * Please do not remove this and leave it at the end of the file, where
 177  * Emacs will automagically detect them.
 178  * ---------------------------------------------------------------------
 179  * Local variables:
 180  * mode: c
 181  * indent-tabs-mode: t
 182  * c-basic-offset: 4
 183  * tab-width: 4
 184  * End:
 185  * vim:noexpandtab:sw=4:ts=4:
 186  */