libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/entry_list_fn_imps.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2021 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 #ifdef PB_DS_CLASS_C_DEC
  42
  43 PB_DS_CLASS_T_DEC
  44 void
  45 PB_DS_CLASS_C_DEC::
  46 deallocate_links_in_list(entry_pointer p_e)
  47 {
  48   while (p_e != 0)
  49     {
  50       entry_pointer p_dealloc_e = p_e;
  51       p_e = p_e->m_p_next;
  52       s_entry_allocator.deallocate(p_dealloc_e, 1);
  53     }
  54 }
  55
  56 PB_DS_CLASS_T_DEC
  57 inline typename PB_DS_CLASS_C_DEC::entry_pointer
  58 PB_DS_CLASS_C_DEC::
  59 get_entry(const_reference r_val, true_type)
  60 {
  61   // Following line might throw an exception.
  62   entry_pointer p_e = s_entry_allocator.allocate(1);
  63
  64   // Following lines* cannot* throw an exception.
  65   new (&p_e->m_value) value_type(r_val);
  66   return p_e;
  67 }
  68
  69 PB_DS_CLASS_T_DEC
  70 inline typename PB_DS_CLASS_C_DEC::entry_pointer
  71 PB_DS_CLASS_C_DEC::
  72 get_entry(const_reference r_val, false_type)
  73 {
  74   // Following line might throw an exception.
  75   entry_pointer p_e = s_entry_allocator.allocate(1);
  76   cond_dealtor_t cond(p_e);
  77
  78   // Following lines might throw an exception.
  79   new (&p_e->m_value) value_type(r_val);
  80   cond.set_no_action();
  81   return p_e;
  82 }
  83
  84 PB_DS_CLASS_T_DEC
  85 inline void
  86 PB_DS_CLASS_C_DEC::
  87 rels_entry(entry_pointer p_e)
  88 {
  89   // The following lines cannot throw exceptions (unless if key-data dtors do).
  90   p_e->m_value.~value_type();
  91   s_entry_allocator.deallocate(p_e, 1);
  92 }
  93
  94 #endif