libstdc++-v3/testsuite/performance/ext/pb_ds/random_int_subscript_find_timing.cc

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
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  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
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  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
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  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
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  40 // warranty.
  41
  42 /**
  43  * @file random_int_subscript_find_timing_test.cpp
  44  * Contains test for subscripting random integers.
  45  */
  46
  47 #include <ext/typelist.h>
  48 #include <performance/io/xml_formatter.hpp>
  49 #include <native_type/assoc/native_hash_map.hpp>
  50 #include <native_type/assoc/native_map.hpp>
  51 #include <io/verified_cmd_line_input.hpp>
  52 #include <rng/twister_rand_gen.hpp>
  53 #include <common_type/assoc/common_type.hpp>
  54 #include <performance/assoc/timing/subscript_find_test.hpp>
  55 #include <iostream>
  56 #include <vector>
  57
  58 void
  59 usage();
  60
  61 int
  62 main(int argc, char* a_p_argv[])
  63 {
  64   using namespace __gnu_pbds::test;
  65
  66   size_t vn = 200;
  67   size_t vs = 200;
  68   size_t vm = 2100;
  69
  70   try
  71     {
  72       xml_test_performance_formatter fmt("Size", "Average time (sec.)");
  73
  74       typedef std::vector<std::pair<int, size_t> > vec_t;
  75       vec_t a_v(vm);
  76       twister_rand_gen g;
  77       for (size_t i = 0; i < vm; ++i)
  78         a_v[i] = std::make_pair(static_cast<int>(g.get_unsigned_long()), 0);
  79       vec_t::const_iterator b = a_v.begin();
  80
  81       typedef subscript_find_test<vec_t::const_iterator> test_t;
  82       test_t tst(b, b, vn, vs, vm, vn, vs, vm);
  83       {
  84         typedef hash_common_types<int, size_t>::performance_tl tl_t;
  85         tl_t tl;
  86         __gnu_cxx::typelist::apply(tst, tl);
  87       }
  88
  89       {
  90         typedef tree_common_types<int, size_t>::performance_tl tl_t;
  91         tl_t tl;
  92         __gnu_cxx::typelist::apply(tst, tl);
  93       }
  94
  95       {
  96         typedef native_hash_map<int, size_t> native_t;
  97         tst(native_t());
  98       }
  99
 100       {
 101         typedef native_map< int, size_t> native_t;
 102         tst(native_t());
 103       }
 104     }
 105   catch (...)
 106     {
 107       std::cerr << "Test failed" << std::endl;
 108       return -1;
 109     }
 110   return 0;
 111 }
 112
 113 void
 114 usage()
 115 {
 116   using namespace std;
 117   cerr << "usage: hash_random_int_subscript_find_timing_test <vn> <vs> <vm>" <<
 118     endl << endl;
 119
 120   cerr <<
 121     "This test checks the performance of various associative containers "
 122     "using their find method. " << endl;
 123   cerr << "Specifically, it does the following:"    << endl;
 124   cerr << "*  Creates a vector of random integers "    << endl;
 125   cerr << "*  Inserts the elements into the container"    << endl;
 126   cerr << "*  Performs a sequence of find operations. At each iteration, "
 127     "it finds, for each integer in the vector, its entry in the "
 128     "container, using the subscript operator";
 129   cerr << "*  Repeats the above test a number of times" << endl;
 130
 131   cerr << endl << endl;
 132
 133   cerr << "vn = minimum size of the vector" << endl;
 134   cerr << "vs = step size of the vector" << endl;
 135   cerr << "vm = maximum size of the vector" << endl;
 136 }