--- /dev/null
+// Profiling unordered_map/unordered_multimap implementation -*- C++ -*-
+
+// Copyright (C) 2009, 2010, 2011, 2012 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 along
+// with this library; see the file COPYING3. If not see
+// <http://www.gnu.org/licenses/>.
+
+/** @file profile/unordered_map
+ * This file is a GNU profile extension to the Standard C++ Library.
+ */
+
+#ifndef _GLIBCXX_PROFILE_UNORDERED_MAP
+#define _GLIBCXX_PROFILE_UNORDERED_MAP 1
+
+#ifndef __GXX_EXPERIMENTAL_CXX0X__
+# include <bits/c++0x_warning.h>
+#else
+# include <unordered_map>
+
+#include <profile/base.h>
+
+#define _GLIBCXX_BASE unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>
+#define _GLIBCXX_STD_BASE _GLIBCXX_STD_C::_GLIBCXX_BASE
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+namespace __profile
+{
+ /// Class std::unordered_map wrapper with performance instrumentation.
+ template<typename _Key, typename _Tp,
+ typename _Hash = std::hash<_Key>,
+ typename _Pred = std::equal_to<_Key>,
+ typename _Alloc = std::allocator<_Key> >
+ class unordered_map
+ : public _GLIBCXX_STD_BASE
+ {
+ typedef typename _GLIBCXX_STD_BASE _Base;
+
+ public:
+ typedef typename _Base::size_type size_type;
+ typedef typename _Base::hasher hasher;
+ typedef typename _Base::key_equal key_equal;
+ typedef typename _Base::allocator_type allocator_type;
+ typedef typename _Base::key_type key_type;
+ typedef typename _Base::value_type value_type;
+ typedef typename _Base::difference_type difference_type;
+ typedef typename _Base::reference reference;
+ typedef typename _Base::const_reference const_reference;
+ typedef typename _Base::mapped_type mapped_type;
+
+ typedef typename _Base::iterator iterator;
+ typedef typename _Base::const_iterator const_iterator;
+
+ explicit
+ unordered_map(size_type __n = 10,
+ const hasher& __hf = hasher(),
+ const key_equal& __eql = key_equal(),
+ const allocator_type& __a = allocator_type())
+ : _Base(__n, __hf, __eql, __a)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ __profcxx_hashtable_construct2(this);
+ }
+
+ template<typename _InputIterator>
+ unordered_map(_InputIterator __f, _InputIterator __l,
+ size_type __n = 0,
+ const hasher& __hf = hasher(),
+ const key_equal& __eql = key_equal(),
+ const allocator_type& __a = allocator_type())
+ : _Base(__f, __l, __n, __hf, __eql, __a)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ __profcxx_hashtable_construct2(this);
+ }
+
+ unordered_map(const unordered_map& __x)
+ : _Base(__x)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ __profcxx_hashtable_construct2(this);
+ }
+
+ unordered_map(const _Base& __x)
+ : _Base(__x)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ __profcxx_hashtable_construct2(this);
+ }
+
+ unordered_map(unordered_map&& __x)
+ : _Base(std::move(__x))
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ __profcxx_hashtable_construct2(this);
+ }
+
+ unordered_map(initializer_list<value_type> __l,
+ size_type __n = 0,
+ const hasher& __hf = hasher(),
+ const key_equal& __eql = key_equal(),
+ const allocator_type& __a = allocator_type())
+ : _Base(__l, __n, __hf, __eql, __a) { }
+
+ unordered_map&
+ operator=(const unordered_map& __x)
+ {
+ *static_cast<_Base*>(this) = __x;
+ return *this;
+ }
+
+ unordered_map&
+ operator=(unordered_map&& __x)
+ {
+ // NB: DR 1204.
+ // NB: DR 675.
+ this->clear();
+ this->swap(__x);
+ return *this;
+ }
+
+ unordered_map&
+ operator=(initializer_list<value_type> __l)
+ {
+ this->clear();
+ this->insert(__l);
+ return *this;
+ }
+
+ ~unordered_map() noexcept
+ {
+ __profcxx_hashtable_destruct(this, _Base::bucket_count(),
+ _Base::size());
+ _M_profile_destruct();
+ }
+
+ _Base&
+ _M_base() noexcept { return *this; }
+
+ const _Base&
+ _M_base() const noexcept { return *this; }
+
+ void
+ clear() noexcept
+ {
+ __profcxx_hashtable_destruct(this, _Base::bucket_count(),
+ _Base::size());
+ _M_profile_destruct();
+ _Base::clear();
+ }
+
+ template<typename... _Args>
+ std::pair<iterator, bool>
+ emplace(_Args&&... __args)
+ {
+ size_type __old_size = _Base::bucket_count();
+ std::pair<iterator, bool> __res
+ = _Base::emplace(std::forward<_Args>(__args)...);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename... _Args>
+ iterator
+ emplace_hint(const_iterator __it, _Args&&... __args)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res
+ = _Base::emplace_hint(__it, std::forward<_Args>(__args)...);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ void
+ insert(std::initializer_list<value_type> __l)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::insert(__l);
+ _M_profile_resize(__old_size);
+ }
+
+ std::pair<iterator, bool>
+ insert(const value_type& __obj)
+ {
+ size_type __old_size = _Base::bucket_count();
+ std::pair<iterator, bool> __res = _Base::insert(__obj);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ iterator
+ insert(const_iterator __iter, const value_type& __v)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res = _Base::insert(__iter, __v);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename _Pair, typename = typename
+ std::enable_if<std::is_constructible<value_type,
+ _Pair&&>::value>::type>
+ std::pair<iterator, bool>
+ insert(_Pair&& __obj)
+ {
+ size_type __old_size = _Base::bucket_count();
+ std::pair<iterator, bool> __res
+ = _Base::insert(std::forward<_Pair>(__obj));
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename _Pair, typename = typename
+ std::enable_if<std::is_constructible<value_type,
+ _Pair&&>::value>::type>
+ iterator
+ insert(const_iterator __iter, _Pair&& __v)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res = _Base::insert(__iter, std::forward<_Pair>(__v));
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename _InputIter>
+ void
+ insert(_InputIter __first, _InputIter __last)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::insert(__first, __last);
+ _M_profile_resize(__old_size);
+ }
+
+ void
+ insert(const value_type* __first, const value_type* __last)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::insert(__first, __last);
+ _M_profile_resize(__old_size);
+ }
+
+ // operator[]
+ mapped_type&
+ operator[](const _Key& __k)
+ {
+ size_type __old_size = _Base::bucket_count();
+ mapped_type& __res = _M_base()[__k];
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ mapped_type&
+ operator[](_Key&& __k)
+ {
+ size_type __old_size = _Base::bucket_count();
+ mapped_type& __res = _M_base()[std::move(__k)];
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ void
+ swap(unordered_map& __x)
+ { _Base::swap(__x); }
+
+ void rehash(size_type __n)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::rehash(__n);
+ _M_profile_resize(__old_size);
+ }
+
+ private:
+ void
+ _M_profile_resize(size_type __old_size)
+ {
+ size_type __new_size = _Base::bucket_count();
+ if (__old_size != __new_size)
+ __profcxx_hashtable_resize(this, __old_size, __new_size);
+ }
+
+ void
+ _M_profile_destruct()
+ {
+ size_type __hops = 0, __lc = 0, __chain = 0;
+ iterator __it = this->begin();
+ while (__it != this->end())
+ {
+ size_type __bkt = this->bucket(__it->first);
+ auto __lit = this->begin(__bkt);
+ auto __lend = this->end(__bkt);
+ for (++__it, ++__lit; __lit != __lend; ++__it, ++__lit)
+ ++__chain;
+ if (__chain)
+ {
+ ++__chain;
+ __lc = __lc > __chain ? __lc : __chain;
+ __hops += __chain * (__chain - 1) / 2;
+ __chain = 0;
+ }
+ }
+ __profcxx_hashtable_destruct2(this, __lc, _Base::size(), __hops);
+ }
+ };
+
+ template<typename _Key, typename _Tp, typename _Hash,
+ typename _Pred, typename _Alloc>
+ inline void
+ swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
+ unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
+ { __x.swap(__y); }
+
+ template<typename _Key, typename _Tp, typename _Hash,
+ typename _Pred, typename _Alloc>
+ inline bool
+ operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
+ const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
+ { return __x._M_equal(__y); }
+
+ template<typename _Key, typename _Tp, typename _Hash,
+ typename _Pred, typename _Alloc>
+ inline bool
+ operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
+ const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
+ { return !(__x == __y); }
+
+#undef _GLIBCXX_BASE
+#undef _GLIBCXX_STD_BASE
+#define _GLIBCXX_BASE unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>
+#define _GLIBCXX_STD_BASE _GLIBCXX_STD_C::_GLIBCXX_BASE
+
+ /// Class std::unordered_multimap wrapper with performance instrumentation.
+ template<typename _Key, typename _Tp,
+ typename _Hash = std::hash<_Key>,
+ typename _Pred = std::equal_to<_Key>,
+ typename _Alloc = std::allocator<_Key> >
+ class unordered_multimap
+ : public _GLIBCXX_STD_BASE
+ {
+ typedef typename _GLIBCXX_STD_BASE _Base;
+
+ public:
+ typedef typename _Base::size_type size_type;
+ typedef typename _Base::hasher hasher;
+ typedef typename _Base::key_equal key_equal;
+ typedef typename _Base::allocator_type allocator_type;
+ typedef typename _Base::key_type key_type;
+ typedef typename _Base::value_type value_type;
+ typedef typename _Base::difference_type difference_type;
+ typedef typename _Base::reference reference;
+ typedef typename _Base::const_reference const_reference;
+
+ typedef typename _Base::iterator iterator;
+ typedef typename _Base::const_iterator const_iterator;
+
+ explicit
+ unordered_multimap(size_type __n = 10,
+ const hasher& __hf = hasher(),
+ const key_equal& __eql = key_equal(),
+ const allocator_type& __a = allocator_type())
+ : _Base(__n, __hf, __eql, __a)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ }
+ template<typename _InputIterator>
+ unordered_multimap(_InputIterator __f, _InputIterator __l,
+ size_type __n = 0,
+ const hasher& __hf = hasher(),
+ const key_equal& __eql = key_equal(),
+ const allocator_type& __a = allocator_type())
+ : _Base(__f, __l, __n, __hf, __eql, __a)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ }
+
+ unordered_multimap(const unordered_multimap& __x)
+ : _Base(__x)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ }
+
+ unordered_multimap(const _Base& __x)
+ : _Base(__x)
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ }
+
+ unordered_multimap(unordered_multimap&& __x)
+ : _Base(std::move(__x))
+ {
+ __profcxx_hashtable_construct(this, _Base::bucket_count());
+ }
+
+ unordered_multimap(initializer_list<value_type> __l,
+ size_type __n = 0,
+ const hasher& __hf = hasher(),
+ const key_equal& __eql = key_equal(),
+ const allocator_type& __a = allocator_type())
+ : _Base(__l, __n, __hf, __eql, __a) { }
+
+ unordered_multimap&
+ operator=(const unordered_multimap& __x)
+ {
+ *static_cast<_Base*>(this) = __x;
+ return *this;
+ }
+
+ unordered_multimap&
+ operator=(unordered_multimap&& __x)
+ {
+ // NB: DR 1204.
+ // NB: DR 675.
+ this->clear();
+ this->swap(__x);
+ return *this;
+ }
+
+ unordered_multimap&
+ operator=(initializer_list<value_type> __l)
+ {
+ this->clear();
+ this->insert(__l);
+ return *this;
+ }
+
+ ~unordered_multimap() noexcept
+ {
+ __profcxx_hashtable_destruct(this, _Base::bucket_count(),
+ _Base::size());
+ _M_profile_destruct();
+ }
+
+ void
+ clear() noexcept
+ {
+ __profcxx_hashtable_destruct(this, _Base::bucket_count(),
+ _Base::size());
+ _M_profile_destruct();
+ _Base::clear();
+ }
+
+ template<typename... _Args>
+ iterator
+ emplace(_Args&&... __args)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res
+ = _Base::emplace(std::forward<_Args>(__args)...);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename... _Args>
+ iterator
+ emplace_hint(const_iterator __it, _Args&&... __args)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res
+ = _Base::emplace_hint(__it, std::forward<_Args>(__args)...);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ void
+ insert(std::initializer_list<value_type> __l)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::insert(__l);
+ _M_profile_resize(__old_size);
+ }
+
+ iterator
+ insert(const value_type& __obj)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res = _Base::insert(__obj);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ iterator
+ insert(const_iterator __iter, const value_type& __v)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res = _Base::insert(__iter, __v);
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename _Pair, typename = typename
+ std::enable_if<std::is_constructible<value_type,
+ _Pair&&>::value>::type>
+ iterator
+ insert(_Pair&& __obj)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res = _Base::insert(std::forward<_Pair>(__obj));
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename _Pair, typename = typename
+ std::enable_if<std::is_constructible<value_type,
+ _Pair&&>::value>::type>
+ iterator
+ insert(const_iterator __iter, _Pair&& __v)
+ {
+ size_type __old_size = _Base::bucket_count();
+ iterator __res = _Base::insert(__iter, std::forward<_Pair>(__v));
+ _M_profile_resize(__old_size);
+ return __res;
+ }
+
+ template<typename _InputIter>
+ void
+ insert(_InputIter __first, _InputIter __last)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::insert(__first, __last);
+ _M_profile_resize(__old_size);
+ }
+
+ void
+ insert(const value_type* __first, const value_type* __last)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::insert(__first, __last);
+ _M_profile_resize(__old_size);
+ }
+
+ void
+ swap(unordered_multimap& __x)
+ { _Base::swap(__x); }
+
+ void rehash(size_type __n)
+ {
+ size_type __old_size = _Base::bucket_count();
+ _Base::rehash(__n);
+ _M_profile_resize(__old_size);
+ }
+
+ private:
+ void
+ _M_profile_resize(size_type __old_size)
+ {
+ size_type __new_size = _Base::bucket_count();
+ if (__old_size != __new_size)
+ __profcxx_hashtable_resize(this, __old_size, __new_size);
+ }
+
+ void
+ _M_profile_destruct()
+ {
+ size_type __hops = 0, __lc = 0, __chain = 0;
+ iterator __it = this->begin();
+ while (__it != this->end())
+ {
+ size_type __bkt = this->bucket(__it->first);
+ auto __lit = this->begin(__bkt);
+ auto __lend = this->end(__bkt);
+ for (++__it, ++__lit; __lit != __lend; ++__it, ++__lit)
+ ++__chain;
+ if (__chain)
+ {
+ ++__chain;
+ __lc = __lc > __chain ? __lc : __chain;
+ __hops += __chain * (__chain - 1) / 2;
+ __chain = 0;
+ }
+ }
+ __profcxx_hashtable_destruct2(this, __lc, _Base::size(), __hops);
+ }
+ };
+
+ template<typename _Key, typename _Tp, typename _Hash,
+ typename _Pred, typename _Alloc>
+ inline void
+ swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
+ unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
+ { __x.swap(__y); }
+
+ template<typename _Key, typename _Tp, typename _Hash,
+ typename _Pred, typename _Alloc>
+ inline bool
+ operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
+ const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
+ { return __x._M_equal(__y); }
+
+ template<typename _Key, typename _Tp, typename _Hash,
+ typename _Pred, typename _Alloc>
+ inline bool
+ operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
+ const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
+ { return !(__x == __y); }
+
+} // namespace __profile
+} // namespace std
+
+#undef _GLIBCXX_BASE
+#undef _GLIBCXX_STD_BASE
+
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
+#endif
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