1// -*- C++ -*- 2 3// Copyright (C) 2005-2022 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 gp_hash_table_map_/resize_fn_imps.hpp 38 * Contains implementations of gp_ht_map_'s resize related functions. 39 */ 40 41#ifdef PB_DS_CLASS_C_DEC 42 43PB_DS_CLASS_T_DEC 44inline bool 45PB_DS_CLASS_C_DEC:: 46do_resize_if_needed() 47{ 48 if (!resize_base::is_resize_needed()) 49 return false; 50 resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); 51 return true; 52} 53 54PB_DS_CLASS_T_DEC 55void 56PB_DS_CLASS_C_DEC:: 57do_resize(size_type n) 58{ resize_imp(resize_base::get_nearest_larger_size(n)); } 59 60PB_DS_CLASS_T_DEC 61inline void 62PB_DS_CLASS_C_DEC:: 63do_resize_if_needed_no_throw() 64{ 65 if (!resize_base::is_resize_needed()) 66 return; 67 68 __try 69 { 70 resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); 71 } 72 __catch(...) 73 { } 74 75 PB_DS_ASSERT_VALID((*this)) 76} 77 78PB_DS_CLASS_T_DEC 79void 80PB_DS_CLASS_C_DEC:: 81resize_imp(size_type new_size) 82{ 83#ifdef PB_DS_REGRESSION 84 typename _Alloc::group_adjustor adjust(m_num_e); 85#endif 86 87 if (new_size == m_num_e) 88 return; 89 90 PB_DS_ASSERT_VALID((*this)) 91 const size_type old_size = m_num_e; 92 entry_array a_entries_resized = 0; 93 94 // Following line might throw an exception. 95 a_entries_resized = s_entry_allocator.allocate(new_size); 96 97 ranged_probe_fn_base::notify_resized(new_size); 98 m_num_e = new_size; 99 100 for (size_type i = 0; i < m_num_e; ++i) 101 a_entries_resized[i].m_stat = empty_entry_status; 102 103 __try 104 { 105 resize_imp(a_entries_resized, old_size); 106 } 107 __catch(...) 108 { 109 erase_all_valid_entries(a_entries_resized, new_size); 110 m_num_e = old_size; 111 s_entry_allocator.deallocate(a_entries_resized, new_size); 112 ranged_probe_fn_base::notify_resized(old_size); 113 __throw_exception_again; 114 } 115 116 // At this point no exceptions can be thrown. 117 _GLIBCXX_DEBUG_ONLY(assert_entry_array_valid(a_entries_resized, 118 traits_base::m_store_extra_indicator, 119 __FILE__, __LINE__);) 120 121 Resize_Policy::notify_resized(new_size); 122 erase_all_valid_entries(m_entries, old_size); 123 s_entry_allocator.deallocate(m_entries, old_size); 124 m_entries = a_entries_resized; 125 PB_DS_ASSERT_VALID((*this)) 126} 127 128PB_DS_CLASS_T_DEC 129void 130PB_DS_CLASS_C_DEC:: 131resize_imp(entry_array a_entries_resized, size_type old_size) 132{ 133 for (size_type pos = 0; pos < old_size; ++pos) 134 if (m_entries[pos].m_stat == valid_entry_status) 135 resize_imp_reassign(m_entries + pos, a_entries_resized, 136 traits_base::m_store_extra_indicator); 137} 138 139#include <ext/pb_ds/detail/gp_hash_table_map_/resize_no_store_hash_fn_imps.hpp> 140#include <ext/pb_ds/detail/gp_hash_table_map_/resize_store_hash_fn_imps.hpp> 141 142#endif 143