--- /dev/null
+// -*- 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
+
projects / msp430-gcc.git / blobdiff