libstdc++
entry_list_fn_imps.hpp
Go to the documentation of this file.
1 // -*- C++ -*-
2 
3 // Copyright (C) 2005, 2006, 2009, 2010 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
29 // notice appears in all copies, and that both that copyright notice
30 // and this permission notice appear in supporting documentation. None
31 // of the above authors, nor IBM Haifa Research Laboratories, make any
32 // representation about the suitability of this software for any
33 // purpose. It is provided "as is" without express or implied
34 // warranty.
35 
36 /**
37  * @file cc_hash_table_map_/entry_list_fn_imps.hpp
38  * Contains implementations of cc_ht_map_'s entry-list related functions.
39  */
40 
41 PB_DS_CLASS_T_DEC
42 void
43 PB_DS_CLASS_C_DEC::
44 deallocate_links_in_list(entry_pointer p_e)
45 {
46  while (p_e != 0)
47  {
48  entry_pointer p_dealloc_e = p_e;
49  p_e = p_e->m_p_next;
50  s_entry_allocator.deallocate(p_dealloc_e, 1);
51  }
52 }
53 
54 PB_DS_CLASS_T_DEC
55 inline typename PB_DS_CLASS_C_DEC::entry_pointer
56 PB_DS_CLASS_C_DEC::
57 get_entry(const_reference r_val, true_type)
58 {
59  // Following line might throw an exception.
60  entry_pointer p_e = s_entry_allocator.allocate(1);
61 
62  // Following lines* cannot* throw an exception.
63  new (&p_e->m_value) value_type(r_val);
64  return p_e;
65 }
66 
67 PB_DS_CLASS_T_DEC
68 inline typename PB_DS_CLASS_C_DEC::entry_pointer
69 PB_DS_CLASS_C_DEC::
70 get_entry(const_reference r_val, false_type)
71 {
72  // Following line might throw an exception.
73  entry_pointer p_e = s_entry_allocator.allocate(1);
74  cond_dealtor_t cond(p_e);
75 
76  // Following lines might throw an exception.
77  new (&p_e->m_value) value_type(r_val);
78  cond.set_no_action();
79  return p_e;
80 }
81 
82 PB_DS_CLASS_T_DEC
83 inline void
84 PB_DS_CLASS_C_DEC::
85 rels_entry(entry_pointer p_e)
86 {
87  // The following lines cannot throw exceptions (unless if key-data dtors do).
88  p_e->m_value.~value_type();
89  s_entry_allocator.deallocate(p_e, 1);
90 }
91