| // -*- C++ -*- |
| |
| // Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010 |
| // Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the terms |
| // of the GNU General Public License as published by the Free Software |
| // Foundation; either version 3, or (at your option) any later |
| // version. |
| |
| // This library is distributed in the hope that it will be useful, but |
| // WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // General Public License for more details. |
| |
| // Under Section 7 of GPL version 3, you are granted additional |
| // permissions described in the GCC Runtime Library Exception, version |
| // 3.1, as published by the Free Software Foundation. |
| |
| // You should have received a copy of the GNU General Public License and |
| // a copy of the GCC Runtime Library Exception along with this program; |
| // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| // <http://www.gnu.org/licenses/>. |
| |
| // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. |
| |
| // Permission to use, copy, modify, sell, and distribute this software |
| // is hereby granted without fee, provided that the above copyright |
| // notice appears in all copies, and that both that copyright notice |
| // and this permission notice appear in supporting documentation. None |
| // of the above authors, nor IBM Haifa Research Laboratories, make any |
| // representation about the suitability of this software for any |
| // purpose. It is provided "as is" without express or implied |
| // warranty. |
| |
| /** |
| * @file resize_fn_imps.hpp |
| * Contains implementations of cc_ht_map_'s resize related functions. |
| */ |
| |
| PB_DS_CLASS_T_DEC |
| inline bool |
| PB_DS_CLASS_C_DEC:: |
| do_resize_if_needed() |
| { |
| if (!resize_base::is_resize_needed()) |
| return false; |
| resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); |
| return true; |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| do_resize(size_type len) |
| { resize_imp(resize_base::get_nearest_larger_size(len)); } |
| |
| PB_DS_CLASS_T_DEC |
| inline void |
| PB_DS_CLASS_C_DEC:: |
| do_resize_if_needed_no_throw() |
| { |
| if (!resize_base::is_resize_needed()) |
| return; |
| |
| __try |
| { |
| resize_imp(resize_base::get_new_size(m_num_e, m_num_used_e)); |
| } |
| __catch(...) |
| { } |
| |
| _GLIBCXX_DEBUG_ONLY(assert_valid();) |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| resize_imp(size_type new_size) |
| { |
| _GLIBCXX_DEBUG_ONLY(assert_valid();) |
| if (new_size == m_num_e) |
| return; |
| |
| const size_type old_size = m_num_e; |
| entry_pointer_array a_p_entries_resized; |
| |
| // Following line might throw an exception. |
| ranged_hash_fn_base::notify_resized(new_size); |
| |
| __try |
| { |
| // Following line might throw an exception. |
| a_p_entries_resized = s_entry_pointer_allocator.allocate(new_size); |
| m_num_e = new_size; |
| } |
| __catch(...) |
| { |
| ranged_hash_fn_base::notify_resized(old_size); |
| __throw_exception_again; |
| } |
| |
| // At this point no exceptions can be thrown. |
| resize_imp_no_exceptions(new_size, a_p_entries_resized, old_size); |
| Resize_Policy::notify_resized(new_size); |
| _GLIBCXX_DEBUG_ONLY(assert_valid();) |
| } |
| |
| PB_DS_CLASS_T_DEC |
| void |
| PB_DS_CLASS_C_DEC:: |
| resize_imp_no_exceptions(size_type new_size, entry_pointer_array a_p_entries_resized, size_type old_size) |
| { |
| std::fill(a_p_entries_resized, a_p_entries_resized + m_num_e, |
| entry_pointer(0)); |
| |
| for (size_type pos = 0; pos < old_size; ++pos) |
| { |
| entry_pointer p_e = m_entries[pos]; |
| while (p_e != 0) |
| p_e = resize_imp_no_exceptions_reassign_pointer(p_e, a_p_entries_resized, traits_base::m_store_extra_indicator); |
| } |
| |
| m_num_e = new_size; |
| _GLIBCXX_DEBUG_ONLY(assert_entry_pointer_array_valid(a_p_entries_resized);) |
| s_entry_pointer_allocator.deallocate(m_entries, old_size); |
| m_entries = a_p_entries_resized; |
| _GLIBCXX_DEBUG_ONLY(assert_valid();) |
| } |
| |
| #include <ext/pb_ds/detail/cc_hash_table_map_/resize_no_store_hash_fn_imps.hpp> |
| #include <ext/pb_ds/detail/cc_hash_table_map_/resize_store_hash_fn_imps.hpp> |
| |