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https://opencores.org/ocsvn/openrisc_2011-10-31/openrisc_2011-10-31/trunk
Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [libstdc++-v3/] [include/] [ext/] [pb_ds/] [detail/] [resize_policy/] [hash_load_check_resize_trigger_imp.hpp] - Rev 424
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// -*- C++ -*- // Copyright (C) 2005, 2006, 2007, 2008, 2009 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 hash_load_check_resize_trigger_imp.hpp * Contains a resize trigger implementation. */ PB_DS_CLASS_T_DEC PB_DS_CLASS_C_DEC:: hash_load_check_resize_trigger(float load_min, float load_max) : m_load_min(load_min), m_load_max(load_max), m_next_shrink_size(0), m_next_grow_size(0), m_resize_needed(false) { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_find_search_start() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_find_search_collision() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_find_search_end() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_insert_search_start() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_insert_search_collision() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_insert_search_end() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_erase_search_start() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_erase_search_collision() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_erase_search_end() { _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_inserted(size_type num_entries) { m_resize_needed = (num_entries >= m_next_grow_size); size_base::set_size(num_entries); _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline void PB_DS_CLASS_C_DEC:: notify_erased(size_type num_entries) { size_base::set_size(num_entries); m_resize_needed = num_entries <= m_next_shrink_size; _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC inline bool PB_DS_CLASS_C_DEC:: is_resize_needed() const { _GLIBCXX_DEBUG_ONLY(assert_valid();) return m_resize_needed; } PB_DS_CLASS_T_DEC inline bool PB_DS_CLASS_C_DEC:: is_grow_needed(size_type /*size*/, size_type num_entries) const { _GLIBCXX_DEBUG_ASSERT(m_resize_needed); return num_entries >= m_next_grow_size; } PB_DS_CLASS_T_DEC PB_DS_CLASS_C_DEC:: ~hash_load_check_resize_trigger() { } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: notify_resized(size_type new_size) { m_resize_needed = false; m_next_grow_size = size_type(m_load_max * new_size - 1); m_next_shrink_size = size_type(m_load_min * new_size); #ifdef PB_DS_HT_MAP_RESIZE_TRACE_ std::cerr << "hlcrt::notify_resized " << static_cast<unsigned long>(new_size) << " " << static_cast<unsigned long>(m_load_min) << " " << static_cast<unsigned long>(m_load_max) << " " << static_cast<unsigned long>(m_next_shrink_size) << " " << static_cast<unsigned long>(m_next_grow_size) << " " << std::endl; #endif _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: notify_externally_resized(size_type new_size) { m_resize_needed = false; size_type new_grow_size = size_type(m_load_max * new_size - 1); size_type new_shrink_size = size_type(m_load_min * new_size); if (new_grow_size >= m_next_grow_size) { _GLIBCXX_DEBUG_ASSERT(new_shrink_size > m_next_shrink_size); m_next_grow_size = new_grow_size; _GLIBCXX_DEBUG_ONLY(assert_valid();) #ifdef PB_DS_HT_MAP_RESIZE_TRACE_ std::cerr << "hlcrt::notify_externally_resized1 " << static_cast<unsigned long>(new_size) << " " << static_cast<unsigned long>(m_load_min) << " " << static_cast<unsigned long>(m_load_max) << " " << static_cast<unsigned long>(m_next_shrink_size) << " " << static_cast<unsigned long>(m_next_grow_size) << " " << std::endl; #endif return; } _GLIBCXX_DEBUG_ASSERT(new_shrink_size <= m_next_shrink_size); m_next_shrink_size = new_shrink_size; #ifdef PB_DS_HT_MAP_RESIZE_TRACE_ std::cerr << "hlcrt::notify_externally_resized2 " << static_cast<unsigned long>(new_size) << " " << static_cast<unsigned long>(m_load_min) << " " << static_cast<unsigned long>(m_load_max) << " " << static_cast<unsigned long>(m_next_shrink_size) << " " << static_cast<unsigned long>(m_next_grow_size) << " " << std::endl; #endif _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: notify_cleared() { _GLIBCXX_DEBUG_ONLY(assert_valid();) size_base::set_size(0); m_resize_needed = (0 < m_next_shrink_size); _GLIBCXX_DEBUG_ONLY(assert_valid();) } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: swap(PB_DS_CLASS_C_DEC& other) { _GLIBCXX_DEBUG_ONLY(assert_valid();) _GLIBCXX_DEBUG_ONLY(other.assert_valid();) size_base::swap(other); std::swap(m_load_min, other.m_load_min); std::swap(m_load_max, other.m_load_max); std::swap(m_resize_needed, other.m_resize_needed); std::swap(m_next_grow_size, other.m_next_grow_size); std::swap(m_next_shrink_size, other.m_next_shrink_size); _GLIBCXX_DEBUG_ONLY(assert_valid();) _GLIBCXX_DEBUG_ONLY(other.assert_valid();) } PB_DS_CLASS_T_DEC inline std::pair<float, float> PB_DS_CLASS_C_DEC:: get_loads() const { PB_DS_STATIC_ASSERT(access, external_load_access); return std::make_pair(m_load_min, m_load_max); } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: set_loads(std::pair<float, float> load_pair) { PB_DS_STATIC_ASSERT(access, external_load_access); const float old_load_min = m_load_min; const float old_load_max = m_load_max; const size_type old_next_shrink_size = m_next_shrink_size; const size_type old_next_grow_size = m_next_grow_size; const bool old_resize_needed = m_resize_needed; __try { m_load_min = load_pair.first; m_load_max = load_pair.second; do_resize(static_cast<size_type>(size_base::get_size() / ((m_load_min + m_load_max) / 2))); } __catch(...) { m_load_min = old_load_min; m_load_max = old_load_max; m_next_shrink_size = old_next_shrink_size; m_next_grow_size = old_next_grow_size; m_resize_needed = old_resize_needed; __throw_exception_again; } } PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: do_resize(size_type) { std::abort(); } #ifdef _GLIBCXX_DEBUG PB_DS_CLASS_T_DEC void PB_DS_CLASS_C_DEC:: assert_valid() const { _GLIBCXX_DEBUG_ASSERT(m_load_max > m_load_min); _GLIBCXX_DEBUG_ASSERT(m_next_grow_size >= m_next_shrink_size); } #endif
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