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[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / testsuite / util / performance / assoc / timing / tree_split_join_test.hpp
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
45 namespace __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