1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006, 2009 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 3, 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 COPYING3.  If not see
18// <http://www.gnu.org/licenses/>.
19
20
21// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
22
23// Permission to use, copy, modify, sell, and distribute this software
24// is hereby granted without fee, provided that the above copyright
25// notice appears in all copies, and that both that copyright notice
26// and this permission notice appear in supporting documentation. None
27// of the above authors, nor IBM Haifa Research Laboratories, make any
28// representation about the suitability of this software for any
29// purpose. It is provided "as is" without express or implied
30// warranty.
31
32/**
33 * @file tree_split_join_test.hpp
34 * Contains a test for splitting and joining trees
35 */
36
37#ifndef PB_DS_TREE_SPLIT_JOIN_TEST_HPP
38#define PB_DS_TREE_SPLIT_JOIN_TEST_HPP
39
40#include <performance/time/timing_test_base.hpp>
41#include <performance/io/xml_formatter.hpp>
42#include <common_type/assoc/string_form.hpp>
43#include <iterator>
44
45namespace __gnu_pbds
46{
47  namespace test
48  {
49    namespace detail
50    {
51      template<typename Cntnr, bool Support_Split_Join>
52      class split_join_functor
53      {
54      public:
55        split_join_functor(Cntnr& r_container) : m_r_container(r_container)
56	{ }
57
58	void
59        operator()(std::size_t resolution)
60	{
61	  for (std::size_t i = 0; i < resolution; ++i)
62	    {
63	      typename Cntnr::const_iterator mid_it = m_r_container.begin();
64	      std::advance(mid_it, m_r_container.size() / 2);
65	      Cntnr other;
66	      m_r_container.split(*mid_it, other);
67	      m_r_container.join(other);
68	    }
69	}
70
71      private:
72	Cntnr& m_r_container;
73      };
74
75      template<typename Cntnr>
76      class split_join_functor<Cntnr, false>
77      {
78      public:
79        split_join_functor(Cntnr& r_container) : m_r_container(r_container)
80	{ }
81
82	void
83        operator()(std::size_t resolution)
84	{
85	  for (std::size_t i = 0; i < resolution; ++i)
86	    {
87	      typename Cntnr::iterator mid_it = m_r_container.begin();
88	      std::advance(mid_it, m_r_container.size() / 2);
89
90	      Cntnr other(mid_it, m_r_container.end());
91	      m_r_container.erase(mid_it, m_r_container.end());
92
93	      m_r_container.insert(other.begin(), other.end());
94	      other.clear();
95	    }
96	}
97
98      private:
99	Cntnr& m_r_container;
100      };
101    } // namespace detail
102
103    template<bool Support_Split_Join>
104    class tree_split_join_test : private __gnu_pbds::test::detail::timing_test_base
105    {
106    public:
107      tree_split_join_test(size_t vn, size_t vs, size_t vm);
108
109      template<typename Cntnr>
110      void
111      operator()(Cntnr);
112
113    private:
114      tree_split_join_test(const tree_split_join_test& );
115
116    private:
117      const size_t m_vn;
118      const size_t m_vs;
119      const size_t m_vm;
120    };
121
122    template<bool Support_Split_Join>
123    tree_split_join_test<Support_Split_Join>::
124    tree_split_join_test(size_t vn, size_t vs, size_t vm) :
125      m_vn(vn),
126      m_vs(vs),
127      m_vm(vm)
128    { }
129
130    template<bool Support_Split_Join>
131    template<typename Cntnr>
132    void
133    tree_split_join_test<Support_Split_Join>::
134    operator()(Cntnr)
135    {
136      typedef xml_result_set_performance_formatter formatter_type;
137      formatter_type res_set_fmt(string_form<Cntnr>::name(),
138				 string_form<Cntnr>::desc());
139
140      for (size_t v = m_vn; v < m_vm; v += m_vs)
141	{
142	  Cntnr cntnr;
143	  for (size_t ins = 0; ins < v; ++ ins)
144            cntnr.insert((typename Cntnr::value_type)ins);
145
146	  __gnu_pbds::test::detail::split_join_functor<Cntnr, Support_Split_Join>
147            fn(cntnr);
148
149	  const double res =
150            __gnu_pbds::test::detail::timing_test_base::operator()(fn);
151	  res_set_fmt.add_res(v, res);
152	}
153    }
154  } // namespace test
155} // namespace __gnu_pbds
156
157#endif
158
159