620 lines
18 KiB
C++
620 lines
18 KiB
C++
// Profiling unordered_map/unordered_multimap implementation -*- C++ -*-
|
|
|
|
// Copyright (C) 2009-2013 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
|
|
|
|
#if __cplusplus < 201103L
|
|
# 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 static_cast<const _GLIBCXX_STD_BASE&>(__x) == __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 static_cast<const _GLIBCXX_STD_BASE&>(__x) == __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 // C++11
|
|
|
|
#endif
|