libstdc++-v3/testsuite/util/regression/rand/assoc/detail/get_set_loads_fn_imps.hpp

   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
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  40 // warranty.
  41
  42 /**
  43  * @file get_set_loads_fn_imps.hpp
  44  * Containsert a random regression test for a specific container type.
  45  */
  46
  47 PB_DS_CLASS_T_DEC
  48 bool
  49 PB_DS_CLASS_C_DEC::
  50 get_set_loads()
  51 {
  52   typedef
  53     __gnu_pbds::detail::integral_constant<int,
  54     test_traits::get_set_loads>
  55     get_set_loads_ind;
  56
  57   return (get_set_loads_imp(get_set_loads_ind()));
  58 }
  59
  60 PB_DS_CLASS_T_DEC
  61 bool
  62 PB_DS_CLASS_C_DEC::
  63 get_set_loads_imp(__gnu_pbds::detail::false_type)
  64 {
  65   return (true);
  66 }
  67
  68 PB_DS_CLASS_T_DEC
  69 bool
  70 PB_DS_CLASS_C_DEC::
  71 get_set_loads_imp(__gnu_pbds::detail::true_type)
  72 {
  73   PB_DS_TRACE("get_set_loads");
  74
  75   bool done = true;
  76
  77   PB_DS_SET_DESTRUCT_PRINT
  78
  79     const std::pair<float, float> old_loads =
  80     m_p_c->get_loads();
  81
  82   try
  83     {
  84       m_alloc.set_throw_prob(m_tp);
  85
  86       typename alloc_t::group_throw_prob_adjustor adjust(
  87                                                          m_p_c->size());
  88
  89       const float min_min_load = static_cast<float>(0.05);
  90       const float max_min_load = static_cast<float>(0.2);
  91
  92       const float new_min_load =
  93         static_cast<float>(
  94                            m_g.get_prob()*  (max_min_load - min_min_load) +
  95                            min_min_load);
  96
  97       const float new_max_load = static_cast<float>(new_min_load*  2.5);
  98
  99       PB_DS_THROW_IF_FAILED(            new_max_load < 1, new_max_load, m_p_c, & m_native_c);
 100
 101       m_p_c->set_loads(
 102                        std::make_pair(                new_min_load,  new_max_load));
 103     }
 104   catch(...)
 105     {
 106       PB_DS_THROW_IF_FAILED(
 107                             old_loads == m_p_c->get_loads(),
 108                             old_loads.first << " " << old_loads.second << " " <<
 109                             m_p_c->get_loads().first << " " <<
 110                             m_p_c->get_loads().second,
 111                             m_p_c,
 112                             & m_native_c);
 113
 114       done = false;
 115     }
 116
 117   PB_DS_COND_COMPARE(*m_p_c, m_native_c);
 118
 119   PB_DS_CANCEL_DESTRUCT_PRINT
 120
 121     return (done);
 122 }