1// -*- C++ -*-
2
3// Copyright (C) 2005-2015 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 erase_test.hpp
34 * Contains a generic erase test.
35 */
36
37#ifndef PB_DS_ERASE_TEST_HPP
38#define PB_DS_ERASE_TEST_HPP
39
40#include <iterator>
41#include <testsuite_allocator.h>
42#include <ext/pb_ds/detail/type_utils.hpp>
43#include <performance/io/xml_formatter.hpp>
44#include <common_type/assoc/string_form.hpp>
45
46namespace __gnu_pbds
47{
48  namespace test
49  {
50    template<typename It>
51    class erase_test
52    {
53    public:
54      erase_test(It ins_b, size_t ins_vn, size_t ins_vs, size_t ins_vm)
55      :	m_ins_b(ins_b), m_ins_vn(ins_vn), m_ins_vs(ins_vs), m_ins_vm(ins_vm)
56      { }
57
58      template<typename Cntnr>
59        void
60        operator()(Cntnr);
61
62    private:
63      erase_test(const erase_test&);
64
65      const It 		m_ins_b;
66      const size_t 	m_ins_vn;
67      const size_t 	m_ins_vs;
68      const size_t 	m_ins_vm;
69    };
70
71    template<typename It>
72    template<typename Cntnr>
73    void
74    erase_test<It>::
75    operator()(Cntnr)
76    {
77      typedef string_form<Cntnr> sform_type;
78      typedef xml_result_set_performance_formatter formatter_type;
79      formatter_type res_set_fmt(sform_type::name(), sform_type::desc());
80
81      for (size_t i = 0; m_ins_vn + i * m_ins_vs < m_ins_vm; ++i)
82	{
83	  const size_t ins_size = m_ins_vn + i * m_ins_vs;
84
85	  It ins_it_b = m_ins_b;
86	  It ins_it_e = m_ins_b;
87	  std::advance(ins_it_e, ins_size);
88
89	  typedef __gnu_test::tracker_allocator_counter counter_type;
90	  __gnu_test::tracker_allocator<char> alloc;
91	  const size_t init_mem = counter_type::get_allocation_count()
92	                          - counter_type::get_deallocation_count();
93	  Cntnr cntnr(ins_it_b, ins_it_e);
94
95	  while (cntnr.size() > 1)
96            cntnr.erase(*cntnr.begin());
97
98	  const size_t final_mem = counter_type::get_allocation_count()
99	                         - counter_type::get_deallocation_count();
100	  assert(final_mem > init_mem);
101	  const size_t delta_mem = final_mem - init_mem;
102	  res_set_fmt.add_res(ins_size, static_cast<double>(delta_mem));
103	}
104    }
105  } // namespace test
106} // namespace __gnu_pbds
107
108#endif
109
110