libstdc++-v3/testsuite/testsuite_performance.h

   1 // -*- C++ -*-
   2 // Testing performance utilities for the C++ library testsuite.
   3 //
   4 // Copyright (C) 2003 Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11 //
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16 //
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  20 // USA.
  21 //
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 #ifndef _GLIBCXX_PERFORMANCE_H
  32 #define _GLIBCXX_PERFORMANCE_H
  33
  34 #include <sys/times.h>
  35 #include <sys/resource.h>
  36 #include <cstdlib>
  37 #include <string>
  38 #include <fstream>
  39 #include <iomanip>
  40
  41 #ifdef __linux__
  42 #include <malloc.h>
  43 #elif defined (__FreeBSD__)
  44 extern "C"
  45 {
  46   struct mallinfo
  47   {
  48     int uordblks;
  49     int hblkhd;
  50   };
  51
  52   struct mallinfo
  53   mallinfo(void)
  54   {
  55     struct mallinfo m = { (((size_t) sbrk (0) + 1023) / 1024), 0 };
  56     return m;
  57   }
  58 }
  59 #else
  60 extern "C"
  61 {
  62   struct mallinfo
  63   {
  64     int uordblks;
  65     int hblkhd;
  66   };
  67
  68   struct mallinfo empty = { 0, 0 };
  69
  70   struct mallinfo
  71   mallinfo(void)
  72   { return empty; }
  73 }
  74 #endif
  75
  76 namespace __gnu_test
  77 {
  78   class time_counter
  79   {
  80     clock_t     elapsed_begin;
  81     clock_t     elapsed_end;
  82     tms         tms_begin;
  83     tms         tms_end;
  84
  85   public:
  86     time_counter()
  87     { this->clear(); }
  88
  89     void
  90     clear()
  91     {
  92       elapsed_begin = 0;
  93       elapsed_end = 0;
  94       memset(&tms_begin, 0, sizeof(tms));
  95       memset(&tms_end, 0, sizeof(tms));
  96     }
  97
  98     void
  99     start()
 100     { elapsed_begin = times(&tms_begin); }
 101
 102     void
 103     stop()
 104     { elapsed_end = times(&tms_end); }
 105
 106     size_t
 107     real_time() const
 108     { return elapsed_end - elapsed_begin; }
 109
 110     size_t
 111     user_time() const
 112     { return tms_end.tms_utime - tms_begin.tms_utime; }
 113
 114     size_t
 115     system_time() const
 116     { return tms_end.tms_stime - tms_begin.tms_stime; }
 117   };
 118
 119   class resource_counter
 120   {
 121     int                 who;
 122     rusage              rusage_begin;
 123     rusage              rusage_end;
 124     struct mallinfo     allocation_begin;
 125     struct mallinfo     allocation_end;
 126
 127   public:
 128     resource_counter(int i = RUSAGE_SELF) : who(i)
 129     { this->clear(); }
 130
 131     void
 132     clear()
 133     {
 134       memset(&rusage_begin, 0, sizeof(rusage_begin));
 135       memset(&rusage_end, 0, sizeof(rusage_end));
 136       memset(&allocation_begin, 0, sizeof(allocation_begin));
 137       memset(&allocation_end, 0, sizeof(allocation_end));
 138     }
 139
 140     void
 141     start()
 142     {
 143       if (getrusage(who, &rusage_begin) != 0 )
 144         memset(&rusage_begin, 0, sizeof(rusage_begin));
 145       malloc(0); // Needed for some implementations.
 146       allocation_begin = mallinfo();
 147     }
 148
 149     void
 150     stop()
 151     {
 152       if (getrusage(who, &rusage_end) != 0 )
 153         memset(&rusage_end, 0, sizeof(rusage_end));
 154       allocation_end = mallinfo();
 155     }
 156
 157     int
 158     allocated_memory() const
 159     { return ((allocation_end.uordblks - allocation_begin.uordblks)
 160               + (allocation_end.hblkhd - allocation_begin.hblkhd)); }
 161
 162     long
 163     hard_page_fault() const
 164     { return rusage_end.ru_majflt - rusage_begin.ru_majflt; }
 165
 166     long
 167     swapped() const
 168     { return rusage_end.ru_nswap - rusage_begin.ru_nswap; }
 169   };
 170
 171   void
 172   start_counters(time_counter& t, resource_counter& r)
 173   {
 174     t.start();
 175     r.start();
 176   }
 177
 178   void
 179   stop_counters(time_counter& t, resource_counter& r)
 180   {
 181     t.stop();
 182     r.stop();
 183   }
 184
 185   void
 186   clear_counters(time_counter& t, resource_counter& r)
 187   {
 188     t.clear();
 189     r.clear();
 190   }
 191
 192   void
 193   report_performance(const std::string file, const std::string comment,
 194                      const time_counter& t, const resource_counter& r)
 195   {
 196     const char space = ' ';
 197     const char tab = '\t';
 198     const char* name = "libstdc++-performance.sum";
 199     std::string::const_iterator i = file.begin() + file.find_last_of('/') + 1;
 200     std::string testname(i, file.end());
 201
 202     std::ofstream out(name, std::ios_base::app);
 203
 204 #ifdef __GTHREADS
 205     if (__gthread_active_p ())
 206       testname.append ("-thread");
 207 #endif
 208
 209     out.setf(std::ios_base::left);
 210     out << std::setw(25) << testname << tab;
 211     out << std::setw(25) << comment << tab;
 212
 213     out.setf(std::ios_base::right);
 214     out << std::setw(4) << t.real_time() << "r" << space;
 215     out << std::setw(4) << t.user_time() << "u" << space;
 216     out << std::setw(4) << t.system_time() << "s" << space;
 217     out << std::setw(8) << r.allocated_memory() << "mem" << space;
 218     out << std::setw(4) << r.hard_page_fault() << "pf" << space;
 219
 220     out << std::endl;
 221     out.close();
 222   }
 223
 224   void
 225   report_header(const std::string file, const std::string header)
 226   {
 227     const char space = ' ';
 228     const char tab = '\t';
 229     const char* name = "libstdc++-performance.sum";
 230     std::string::const_iterator i = file.begin() + file.find_last_of('/') + 1;
 231     std::string testname(i, file.end());
 232
 233     std::ofstream out(name, std::ios_base::app);
 234
 235 #ifdef __GTHREADS
 236     if (__gthread_active_p ())
 237       testname.append ("-thread");
 238 #endif
 239
 240     out.setf(std::ios_base::left);
 241     out << std::setw(25) << testname << tab;
 242     out << std::setw(40) << header << tab;
 243
 244     out << std::endl;
 245     out.close();
 246   }
 247 }; // namespace __gnu_test
 248
 249 #endif // _GLIBCXX_PERFORMANCE_H
 250