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author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
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committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp | |
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Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp')
-rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp | 134 |
1 files changed, 134 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp new file mode 100644 index 000000000..3db838bf8 --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/cc_hash_table_map_/resize_fn_imps.hpp @@ -0,0 +1,134 @@ +// -*- 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> + |