1// -*- C++ -*- 2 3// Copyright (C) 2005, 2006 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 2, 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 COPYING. If not, write to 18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19// MA 02111-1307, USA. 20 21// As a special exception, you may use this file as part of a free 22// software library without restriction. Specifically, if other files 23// instantiate templates or use macros or inline functions from this 24// file, or you compile this file and link it with other files to 25// produce an executable, this file does not by itself cause the 26// resulting executable to be covered by the GNU General Public 27// License. This exception does not however invalidate any other 28// reasons why the executable file might be covered by the GNU General 29// Public License. 30 31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32 33// Permission to use, copy, modify, sell, and distribute this software 34// is hereby granted without fee, provided that the above copyright 35// notice appears in all copies, and that both that copyright notice 36// and this permission notice appear in supporting documentation. None 37// of the above authors, nor IBM Haifa Research Laboratories, make any 38// representation about the suitability of this software for any 39// purpose. It is provided "as is" without express or implied 40// warranty. 41 42/** 43 * @file resize_fn_imps.hpp 44 * Contains implementations of gp_ht_map_'s resize related functions. 45 */ 46 47PB_DS_CLASS_T_DEC 48inline bool 49PB_DS_CLASS_C_DEC:: 50do_resize_if_needed() 51{ 52 if (!resize_base::is_resize_needed()) 53 return false; 54 resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); 55 return true; 56} 57 58PB_DS_CLASS_T_DEC 59void 60PB_DS_CLASS_C_DEC:: 61do_resize(size_type n) 62{ resize_imp(resize_base::get_nearest_larger_size(n)); } 63 64PB_DS_CLASS_T_DEC 65inline void 66PB_DS_CLASS_C_DEC:: 67do_resize_if_needed_no_throw() 68{ 69 if (!resize_base::is_resize_needed()) 70 return; 71 72 try 73 { 74 resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); 75 } 76 catch(...) 77 { } 78 79 _GLIBCXX_DEBUG_ONLY(assert_valid();) 80} 81 82PB_DS_CLASS_T_DEC 83void 84PB_DS_CLASS_C_DEC:: 85resize_imp(size_type new_size) 86{ 87#ifdef PB_DS_REGRESSION 88 typename Allocator::group_throw_prob_adjustor adjust(m_num_e); 89#endif 90 91 if (new_size == m_num_e) 92 return; 93 94 _GLIBCXX_DEBUG_ONLY(assert_valid();) 95 const size_type old_size = m_num_e; 96 entry_array a_entries_resized = NULL; 97 98 // Following line might throw an exception. 99 a_entries_resized = s_entry_allocator.allocate(new_size); 100 101 ranged_probe_fn_base::notify_resized(new_size); 102 m_num_e = new_size; 103 104 for (size_type i = 0; i < m_num_e; ++i) 105 a_entries_resized[i].m_stat = empty_entry_status; 106 107 try 108 { 109 resize_imp(a_entries_resized, old_size); 110 } 111 catch(...) 112 { 113 erase_all_valid_entries(a_entries_resized, new_size); 114 m_num_e = old_size; 115 s_entry_allocator.deallocate(a_entries_resized, new_size); 116 ranged_probe_fn_base::notify_resized(old_size); 117 __throw_exception_again; 118 } 119 120 // At this point no exceptions can be thrown. 121 _GLIBCXX_DEBUG_ONLY(assert_entry_array_valid(a_entries_resized, traits_base::m_store_extra_indicator);) 122 123 Resize_Policy::notify_resized(new_size); 124 erase_all_valid_entries(m_entries, old_size); 125 s_entry_allocator.deallocate(m_entries, old_size); 126 m_entries = a_entries_resized; 127 _GLIBCXX_DEBUG_ONLY(assert_valid();) 128} 129 130PB_DS_CLASS_T_DEC 131void 132PB_DS_CLASS_C_DEC:: 133resize_imp(entry_array a_entries_resized, size_type old_size) 134{ 135 for (size_type pos = 0; pos < old_size; ++pos) 136 if (m_entries[pos].m_stat == valid_entry_status) 137 resize_imp_reassign(m_entries + pos, a_entries_resized, 138 traits_base::m_store_extra_indicator); 139} 140 141#include <ext/pb_ds/detail/gp_hash_table_map_/resize_no_store_hash_fn_imps.hpp> 142#include <ext/pb_ds/detail/gp_hash_table_map_/resize_store_hash_fn_imps.hpp> 143 144