libstdc++-v3/testsuite/performance/ext/pb_ds/priority_queue_random_int_push_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.
  20
  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
  24 // file, or you compile this file and link it with other files to
  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
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file priority_queue_random_int_push_timing_test.cpp
  44  * Contains test for finding random_int.
  45  */
  46
  47 #include <ext/typelist.h>
  48 #include <performance/io/xml_formatter.hpp>
  49 #include <io/verified_cmd_line_input.hpp>
  50 #include <common_type/priority_queue/common_type.hpp>
  51 #include <performance/priority_queue/timing/push_test.hpp>
  52 #include <native_type/priority_queue/native_priority_queue.hpp>
  53 #include <rng/twister_rand_gen.hpp>
  54 #include <iostream>
  55 #include <vector>
  56
  57 void
  58 usage();
  59
  60 int
  61 main(int argc, char* a_p_argv[])
  62 {
  63   using namespace __gnu_pbds::test;
  64
  65   size_t vn = 200;
  66   size_t vs = 200;
  67   size_t vm = 2100;
  68   try
  69     {
  70       xml_test_performance_formatter fmt("Size", "Average time (sec.)");
  71
  72       typedef std::vector<std::pair<int, char> > vec_t;
  73       vec_t a_v(vm);
  74       twister_rand_gen g;
  75       for (size_t i = 0; i < vm; ++i)
  76         a_v[i] = std::make_pair(static_cast<int>(g.get_unsigned_long()), 0);
  77
  78       typedef push_test<vec_t::const_iterator> test_t;
  79       vec_t::const_iterator b = a_v.begin();
  80       test_t tst(b, vn, vs, vm);
  81       {
  82         typedef pq_common_types<int>::performance_tl pq_tl_t;
  83         pq_tl_t tl;
  84         __gnu_cxx::typelist::apply(tst, tl);
  85       }
  86
  87       {
  88         typedef native_priority_queue<int, true> native_pq_t;
  89         tst(native_pq_t());
  90       }
  91
  92       {
  93         typedef native_priority_queue<int, false> native_pq_t;
  94         tst(native_pq_t());
  95       }
  96     }
  97   catch (...)
  98     {
  99       std::cerr << "Test failed" << std::endl;
 100       return -1;
 101     }
 102   return 0;
 103 }
 104
 105 void
 106 usage()
 107 {
 108   using namespace std;
 109   cerr << "usage: priority_queue_random_int_push_timing_test <vn> <vs> <vm>" <<
 110     endl << endl;
 111
 112   cerr <<
 113     "This test checks the performance of various priority_queue containers "
 114     "using their push method. " << endl;
 115   cerr << "Specifically, it does the following:" << endl;
 116   cerr << "*  Creates a vector of random integers " << endl;
 117   cerr << "*  Pushes the elements into the container" << endl;
 118   cerr << "*  Repeats the above test a number of times "
 119             << endl;
 120
 121   cerr << endl << endl;
 122
 123   cerr << "vn = minimum size of the vector" << endl;
 124   cerr << "vs = step size of the vector" << endl;
 125   cerr << "vm = maximum size of the vector" << endl;
 126 }