libstdc++
gp_hash_table_map_/constructor_destructor_fn_imps.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2014 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 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19 
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24 
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
26 
27 // Permission to use, copy, modify, sell, and distribute this software
28 // is hereby granted without fee, provided that the above copyright
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30 // and this permission notice appear in supporting documentation. None
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35 
36 /**
37  * @file gp_hash_table_map_/constructor_destructor_fn_imps.hpp
38  * Contains implementations of gp_ht_map_'s constructors, destructor,
39  * and related functions.
40  */
41 
42 PB_DS_CLASS_T_DEC
43 typename PB_DS_CLASS_C_DEC::entry_allocator
44 PB_DS_CLASS_C_DEC::s_entry_allocator;
45 
46 PB_DS_CLASS_T_DEC
47 template<typename It>
48 void
49 PB_DS_CLASS_C_DEC::
50 copy_from_range(It first_it, It last_it)
51 {
52  while (first_it != last_it)
53  insert(*(first_it++));
54 }
55 
56 PB_DS_CLASS_T_DEC
57 PB_DS_CLASS_C_DEC::
58 PB_DS_GP_HASH_NAME()
59 : ranged_probe_fn_base(resize_base::get_nearest_larger_size(1)),
60  m_num_e(resize_base::get_nearest_larger_size(1)), m_num_used_e(0),
61  m_entries(s_entry_allocator.allocate(m_num_e))
62 {
63  initialize();
64  PB_DS_ASSERT_VALID((*this))
65 }
66 
67 PB_DS_CLASS_T_DEC
68 PB_DS_CLASS_C_DEC::
69 PB_DS_GP_HASH_NAME(const Hash_Fn& r_hash_fn)
70 : ranged_probe_fn_base(resize_base::get_nearest_larger_size(1), r_hash_fn),
71  m_num_e(resize_base::get_nearest_larger_size(1)), m_num_used_e(0),
72  m_entries(s_entry_allocator.allocate(m_num_e))
73 {
74  initialize();
75  PB_DS_ASSERT_VALID((*this))
76 }
77 
78 PB_DS_CLASS_T_DEC
79 PB_DS_CLASS_C_DEC::
80 PB_DS_GP_HASH_NAME(const Hash_Fn& r_hash_fn, const Eq_Fn& r_eq_fn)
81 : hash_eq_fn_base(r_eq_fn),
82  ranged_probe_fn_base(resize_base::get_nearest_larger_size(1), r_hash_fn),
83  m_num_e(resize_base::get_nearest_larger_size(1)), m_num_used_e(0),
84  m_entries(s_entry_allocator.allocate(m_num_e))
85 {
86  initialize();
87  PB_DS_ASSERT_VALID((*this))
88 }
89 
90 PB_DS_CLASS_T_DEC
91 PB_DS_CLASS_C_DEC::
92 PB_DS_GP_HASH_NAME(const Hash_Fn& r_hash_fn, const Eq_Fn& r_eq_fn,
93  const Comb_Probe_Fn& r_comb_hash_fn)
94 : hash_eq_fn_base(r_eq_fn),
95  ranged_probe_fn_base(resize_base::get_nearest_larger_size(1),
96  r_hash_fn, r_comb_hash_fn),
97  m_num_e(resize_base::get_nearest_larger_size(1)), m_num_used_e(0),
98  m_entries(s_entry_allocator.allocate(m_num_e))
99 {
100  initialize();
101  PB_DS_ASSERT_VALID((*this))
102 }
103 
104 PB_DS_CLASS_T_DEC
105 PB_DS_CLASS_C_DEC::
106 PB_DS_GP_HASH_NAME(const Hash_Fn& r_hash_fn, const Eq_Fn& r_eq_fn,
107  const Comb_Probe_Fn& comb_hash_fn, const Probe_Fn& prober)
108 : hash_eq_fn_base(r_eq_fn),
109  ranged_probe_fn_base(resize_base::get_nearest_larger_size(1),
110  r_hash_fn, comb_hash_fn, prober),
111  m_num_e(resize_base::get_nearest_larger_size(1)), m_num_used_e(0),
112  m_entries(s_entry_allocator.allocate(m_num_e))
113 {
114  initialize();
115  PB_DS_ASSERT_VALID((*this))
116 }
117 
118 PB_DS_CLASS_T_DEC
119 PB_DS_CLASS_C_DEC::
120 PB_DS_GP_HASH_NAME(const Hash_Fn& r_hash_fn, const Eq_Fn& r_eq_fn,
121  const Comb_Probe_Fn& comb_hash_fn, const Probe_Fn& prober,
122  const Resize_Policy& r_resize_policy)
123 : hash_eq_fn_base(r_eq_fn), resize_base(r_resize_policy),
124  ranged_probe_fn_base(resize_base::get_nearest_larger_size(1),
125  r_hash_fn, comb_hash_fn, prober),
126  m_num_e(resize_base::get_nearest_larger_size(1)), m_num_used_e(0),
127  m_entries(s_entry_allocator.allocate(m_num_e))
128 {
129  initialize();
130  PB_DS_ASSERT_VALID((*this))
131 }
132 
133 PB_DS_CLASS_T_DEC
134 PB_DS_CLASS_C_DEC::
135 PB_DS_GP_HASH_NAME(const PB_DS_CLASS_C_DEC& other) :
136 #ifdef _GLIBCXX_DEBUG
137  debug_base(other),
138 #endif
139  hash_eq_fn_base(other),
140  resize_base(other),
141  ranged_probe_fn_base(other),
142  m_num_e(other.m_num_e),
143  m_num_used_e(other.m_num_used_e),
144  m_entries(s_entry_allocator.allocate(m_num_e))
145 {
146  for (size_type i = 0; i < m_num_e; ++i)
147  m_entries[i].m_stat = (entry_status)empty_entry_status;
148 
149  __try
150  {
151  for (size_type i = 0; i < m_num_e; ++i)
152  {
153  m_entries[i].m_stat = other.m_entries[i].m_stat;
154  if (m_entries[i].m_stat == valid_entry_status)
155  new (m_entries + i) entry(other.m_entries[i]);
156  }
157  }
158  __catch(...)
159  {
160  deallocate_all();
161  __throw_exception_again;
162  }
163  PB_DS_ASSERT_VALID((*this))
164 }
165 
166 PB_DS_CLASS_T_DEC
167 PB_DS_CLASS_C_DEC::
168 ~PB_DS_GP_HASH_NAME()
169 { deallocate_all(); }
170 
171 PB_DS_CLASS_T_DEC
172 void
173 PB_DS_CLASS_C_DEC::
174 swap(PB_DS_CLASS_C_DEC& other)
175 {
176  PB_DS_ASSERT_VALID((*this))
177  PB_DS_ASSERT_VALID(other)
178  std::swap(m_num_e, other.m_num_e);
179  std::swap(m_num_used_e, other.m_num_used_e);
180  std::swap(m_entries, other.m_entries);
181  ranged_probe_fn_base::swap(other);
182  hash_eq_fn_base::swap(other);
183  resize_base::swap(other);
184  _GLIBCXX_DEBUG_ONLY(debug_base::swap(other));
185  PB_DS_ASSERT_VALID((*this))
186  PB_DS_ASSERT_VALID(other)
187 }
188 
189 PB_DS_CLASS_T_DEC
190 void
191 PB_DS_CLASS_C_DEC::
192 deallocate_all()
193 {
194  clear();
195  erase_all_valid_entries(m_entries, m_num_e);
196  s_entry_allocator.deallocate(m_entries, m_num_e);
197 }
198 
199 PB_DS_CLASS_T_DEC
200 void
201 PB_DS_CLASS_C_DEC::
202 erase_all_valid_entries(entry_array a_entries_resized, size_type len)
203 {
204  for (size_type pos = 0; pos < len; ++pos)
205  {
206  entry_pointer p_e = &a_entries_resized[pos];
207  if (p_e->m_stat == valid_entry_status)
208  p_e->m_value.~value_type();
209  }
210 }
211 
212 PB_DS_CLASS_T_DEC
213 void
214 PB_DS_CLASS_C_DEC::
215 initialize()
216 {
217  Resize_Policy::notify_resized(m_num_e);
218  Resize_Policy::notify_cleared();
219  ranged_probe_fn_base::notify_resized(m_num_e);
220  for (size_type i = 0; i < m_num_e; ++i)
221  m_entries[i].m_stat = empty_entry_status;
222 }
223 
std::swap
void swap(function< _Res(_Args...)> &__x, function< _Res(_Args...)> &__y)
Swap the targets of two polymorphic function object wrappers.
Definition: functional:2534