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gcc/libstdc++-v3/include/debug/unordered_set
Paolo Carlini 290df23d48 hashtable.h (_Hashtable<>::_Hashtable(_Hashtable&&)): Remove noexcept, the move constructor allocates memory... 
2011-09-01  Paolo Carlini  <paolo.carlini@oracle.com>

	* include/bits/hashtable.h (_Hashtable<>::_Hashtable(_Hashtable&&)):
	Remove noexcept, the move constructor allocates memory; rearrange
	the code in the body to consistently update __ht._M_rehash_policy
	before using _M_next_bkt on it.
	* include/debug/unordered_map: Adjust.
	* include/debug/unordered_set: Likewise.
	* include/profile/unordered_map: Likewise.
	* include/profile/unordered_set: Likewise.
	* testsuite/23_containers/unordered_map/cons/
	noexcept_move_construct.cc: Remove.
	* testsuite/23_containers/unordered_set/cons/
	noexcept_move_construct.cc: Likewise.
	* testsuite/23_containers/unordered_multimap/cons/
	noexcept_move_construct.cc: Likewise.
	* testsuite/23_containers/unordered_multiset/cons/
	noexcept_move_construct.cc: Likewise.

From-SVN: r178423
2011-09-01 15:45:20 +00:00

785 lines
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// Debugging unordered_set/unordered_multiset implementation -*- C++ -*-
// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
// 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/>.
/** @file debug/unordered_set
* This file is a GNU debug extension to the Standard C++ Library.
*/
#ifndef _GLIBCXX_DEBUG_UNORDERED_SET
#define _GLIBCXX_DEBUG_UNORDERED_SET 1
#ifndef __GXX_EXPERIMENTAL_CXX0X__
# include <bits/c++0x_warning.h>
#else
# include <unordered_set>
#include <debug/safe_unordered_container.h>
#include <debug/safe_iterator.h>
#include <debug/safe_local_iterator.h>
namespace std _GLIBCXX_VISIBILITY(default)
{
namespace __debug
{
/// Class std::unordered_set with safety/checking/debug instrumentation.
template<typename _Value,
typename _Hash = std::hash<_Value>,
typename _Pred = std::equal_to<_Value>,
typename _Alloc = std::allocator<_Value> >
class unordered_set
: public _GLIBCXX_STD_C::unordered_set<_Value, _Hash, _Pred, _Alloc>,
public __gnu_debug::_Safe_unordered_container<unordered_set<_Value, _Hash,
_Pred, _Alloc> >
{
typedef _GLIBCXX_STD_C::unordered_set<_Value, _Hash,
_Pred, _Alloc> _Base;
typedef __gnu_debug::_Safe_unordered_container<unordered_set> _Safe_base;
typedef typename _Base::const_iterator _Base_const_iterator;
typedef typename _Base::iterator _Base_iterator;
typedef typename _Base::const_local_iterator _Base_const_local_iterator;
typedef typename _Base::local_iterator _Base_local_iterator;
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 __gnu_debug::_Safe_iterator<_Base_iterator,
unordered_set> iterator;
typedef __gnu_debug::_Safe_iterator<_Base_const_iterator,
unordered_set> const_iterator;
typedef __gnu_debug::_Safe_local_iterator<_Base_local_iterator,
unordered_set> local_iterator;
typedef __gnu_debug::_Safe_local_iterator<_Base_const_local_iterator,
unordered_set> const_local_iterator;
explicit
unordered_set(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) { }
template<typename _InputIterator>
unordered_set(_InputIterator __first, _InputIterator __last,
size_type __n = 0,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal(),
const allocator_type& __a = allocator_type())
: _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
__last)),
__gnu_debug::__base(__last), __n,
__hf, __eql, __a) { }
unordered_set(const unordered_set& __x)
: _Base(__x) { }
unordered_set(const _Base& __x)
: _Base(__x) { }
unordered_set(unordered_set&& __x)
: _Base(std::move(__x)) { }
unordered_set(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_set() noexcept { }
unordered_set&
operator=(const unordered_set& __x)
{
*static_cast<_Base*>(this) = __x;
this->_M_invalidate_all();
return *this;
}
unordered_set&
operator=(unordered_set&& __x)
{
// NB: DR 1204.
// NB: DR 675.
clear();
swap(__x);
return *this;
}
unordered_set&
operator=(initializer_list<value_type> __l)
{
this->clear();
this->insert(__l);
return *this;
}
void
swap(unordered_set& __x)
{
_Base::swap(__x);
_Safe_base::_M_swap(__x);
}
void
clear() noexcept
{
_Base::clear();
this->_M_invalidate_all();
}
iterator
begin() noexcept
{ return iterator(_Base::begin(), this); }
const_iterator
begin() const noexcept
{ return const_iterator(_Base::begin(), this); }
iterator
end() noexcept
{ return iterator(_Base::end(), this); }
const_iterator
end() const noexcept
{ return const_iterator(_Base::end(), this); }
const_iterator
cbegin() const noexcept
{ return const_iterator(_Base::begin(), this); }
const_iterator
cend() const noexcept
{ return const_iterator(_Base::end(), this); }
// local versions
local_iterator
begin(size_type __b)
{ return local_iterator(_Base::begin(__b), __b, this); }
local_iterator
end(size_type __b)
{ return local_iterator(_Base::end(__b), __b, this); }
const_local_iterator
begin(size_type __b) const
{ return const_local_iterator(_Base::begin(__b), __b, this); }
const_local_iterator
end(size_type __b) const
{ return const_local_iterator(_Base::end(__b), __b, this); }
const_local_iterator
cbegin(size_type __b) const
{ return const_local_iterator(_Base::cbegin(__b), __b, this); }
const_local_iterator
cend(size_type __b) const
{ return const_local_iterator(_Base::cend(__b), __b, this); }
std::pair<iterator, bool>
insert(const value_type& __obj)
{
size_type __bucket_count = this->bucket_count();
typedef std::pair<_Base_iterator, bool> __pair_type;
__pair_type __res = _Base::insert(__obj);
_M_check_rehashed(__bucket_count);
return std::make_pair(iterator(__res.first, this), __res.second);
}
iterator
insert(const_iterator __hint, const value_type& __obj)
{
__glibcxx_check_insert(__hint);
size_type __bucket_count = this->bucket_count();
_Base_iterator __it = _Base::insert(__hint.base(), __obj);
_M_check_rehashed(__bucket_count);
return iterator(__it, this);
}
std::pair<iterator, bool>
insert(value_type&& __obj)
{
size_type __bucket_count = this->bucket_count();
typedef std::pair<typename _Base::iterator, bool> __pair_type;
__pair_type __res = _Base::insert(std::move(__obj));
_M_check_rehashed(__bucket_count);
return std::make_pair(iterator(__res.first, this), __res.second);
}
iterator
insert(const_iterator __hint, value_type&& __obj)
{
__glibcxx_check_insert(__hint);
size_type __bucket_count = this->bucket_count();
_Base_iterator __it = _Base::insert(__hint.base(), std::move(__obj));
_M_check_rehashed(__bucket_count);
return iterator(__it, this);
}
void
insert(std::initializer_list<value_type> __l)
{
size_type __bucket_count = this->bucket_count();
_Base::insert(__l);
_M_check_rehashed(__bucket_count);
}
template<typename _InputIterator>
void
insert(_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_valid_range(__first, __last);
size_type __bucket_count = this->bucket_count();
_Base::insert(__gnu_debug::__base(__first),
__gnu_debug::__base(__last));
_M_check_rehashed(__bucket_count);
}
iterator
find(const key_type& __key)
{ return iterator(_Base::find(__key), this); }
const_iterator
find(const key_type& __key) const
{ return const_iterator(_Base::find(__key), this); }
std::pair<iterator, iterator>
equal_range(const key_type& __key)
{
typedef std::pair<_Base_iterator, _Base_iterator> __pair_type;
__pair_type __res = _Base::equal_range(__key);
return std::make_pair(iterator(__res.first, this),
iterator(__res.second, this));
}
std::pair<const_iterator, const_iterator>
equal_range(const key_type& __key) const
{
std::pair<_Base_const_iterator, _Base_const_iterator>
__res = _Base::equal_range(__key);
return std::make_pair(const_iterator(__res.first, this),
const_iterator(__res.second, this));
}
size_type
erase(const key_type& __key)
{
size_type __ret(0);
_Base_iterator __victim(_Base::find(__key));
if (__victim != _Base::end())
{
this->_M_invalidate_if(
[__victim](_Base_const_iterator __it)
{ return __it == __victim; });
_Base_local_iterator __local_victim = _S_to_local(__victim);
this->_M_invalidate_local_if(
[__local_victim](_Base_const_local_iterator __it)
{ return __it == __local_victim; });
size_type __bucket_count = this->bucket_count();
_Base::erase(__victim);
_M_check_rehashed(__bucket_count);
__ret = 1;
}
return __ret;
}
iterator
erase(const_iterator __it)
{
__glibcxx_check_erase(__it);
_Base_const_iterator __victim = __it.base();
this->_M_invalidate_if(
[__victim](_Base_const_iterator __it)
{ return __it == __victim; });
_Base_const_local_iterator __local_victim = _S_to_local(__victim);
this->_M_invalidate_local_if(
[__local_victim](_Base_const_local_iterator __it)
{ return __it == __local_victim; });
size_type __bucket_count = this->bucket_count();
_Base_iterator __next = _Base::erase(__it.base());
_M_check_rehashed(__bucket_count);
return iterator(__next, this);
}
iterator
erase(const_iterator __first, const_iterator __last)
{
__glibcxx_check_erase_range(__first, __last);
for (_Base_const_iterator __tmp = __first.base();
__tmp != __last.base(); ++__tmp)
{
_GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
_M_message(__gnu_debug::__msg_valid_range)
._M_iterator(__first, "first")
._M_iterator(__last, "last"));
this->_M_invalidate_if(
[__tmp](_Base_const_iterator __it)
{ return __it == __tmp; });
_Base_const_local_iterator __local_tmp = _S_to_local(__tmp);
this->_M_invalidate_local_if(
[__local_tmp](_Base_const_local_iterator __it)
{ return __it == __local_tmp; });
}
size_type __bucket_count = this->bucket_count();
_Base_iterator __next = _Base::erase(__first.base(),
__last.base());
_M_check_rehashed(__bucket_count);
return iterator(__next, this);
}
_Base&
_M_base() noexcept { return *this; }
const _Base&
_M_base() const noexcept { return *this; }
private:
void
_M_invalidate_locals()
{
_Base_local_iterator __local_end = _Base::end(0);
this->_M_invalidate_local_if(
[__local_end](_Base_const_local_iterator __it)
{ return __it != __local_end; });
}
void
_M_invalidate_all()
{
_Base_iterator __end = _Base::end();
this->_M_invalidate_if(
[__end](_Base_const_iterator __it)
{ return __it != __end; });
_M_invalidate_locals();
}
void
_M_check_rehashed(size_type __prev_count)
{
if (__prev_count != this->bucket_count())
_M_invalidate_locals();
}
static _Base_local_iterator
_S_to_local(_Base_iterator __it)
{ return _Base_local_iterator(__it._M_cur_node); }
static _Base_const_local_iterator
_S_to_local(_Base_const_iterator __it)
{ return _Base_const_local_iterator(__it._M_cur_node); }
};
template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
inline void
swap(unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
{ __x.swap(__y); }
template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
inline bool
operator==(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
{ return __x._M_equal(__y); }
template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
inline bool
operator!=(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
{ return !(__x == __y); }
/// Class std::unordered_multiset with safety/checking/debug instrumentation.
template<typename _Value,
typename _Hash = std::hash<_Value>,
typename _Pred = std::equal_to<_Value>,
typename _Alloc = std::allocator<_Value> >
class unordered_multiset
: public _GLIBCXX_STD_C::unordered_multiset<_Value, _Hash, _Pred, _Alloc>,
public __gnu_debug::_Safe_unordered_container<
unordered_multiset<_Value, _Hash, _Pred, _Alloc> >
{
typedef _GLIBCXX_STD_C::unordered_multiset<_Value, _Hash,
_Pred, _Alloc> _Base;
typedef __gnu_debug::_Safe_unordered_container<unordered_multiset>
_Safe_base;
typedef typename _Base::const_iterator _Base_const_iterator;
typedef typename _Base::iterator _Base_iterator;
typedef typename _Base::const_local_iterator _Base_const_local_iterator;
typedef typename _Base::local_iterator _Base_local_iterator;
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 __gnu_debug::_Safe_iterator<_Base_iterator,
unordered_multiset> iterator;
typedef __gnu_debug::_Safe_iterator<_Base_const_iterator,
unordered_multiset> const_iterator;
typedef __gnu_debug::_Safe_local_iterator<
_Base_local_iterator, unordered_multiset> local_iterator;
typedef __gnu_debug::_Safe_local_iterator<
_Base_const_local_iterator, unordered_multiset> const_local_iterator;
explicit
unordered_multiset(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) { }
template<typename _InputIterator>
unordered_multiset(_InputIterator __first, _InputIterator __last,
size_type __n = 0,
const hasher& __hf = hasher(),
const key_equal& __eql = key_equal(),
const allocator_type& __a = allocator_type())
: _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
__last)),
__gnu_debug::__base(__last), __n,
__hf, __eql, __a) { }
unordered_multiset(const unordered_multiset& __x)
: _Base(__x) { }
unordered_multiset(const _Base& __x)
: _Base(__x) { }
unordered_multiset(unordered_multiset&& __x)
: _Base(std::move(__x)) { }
unordered_multiset(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_multiset() noexcept { }
unordered_multiset&
operator=(const unordered_multiset& __x)
{
*static_cast<_Base*>(this) = __x;
this->_M_invalidate_all();
return *this;
}
unordered_multiset&
operator=(unordered_multiset&& __x)
{
// NB: DR 1204.
// NB: DR 675.
clear();
swap(__x);
return *this;
}
unordered_multiset&
operator=(initializer_list<value_type> __l)
{
this->clear();
this->insert(__l);
return *this;
}
void
swap(unordered_multiset& __x)
{
_Base::swap(__x);
_Safe_base::_M_swap(__x);
}
void
clear() noexcept
{
_Base::clear();
this->_M_invalidate_all();
}
iterator
begin() noexcept
{ return iterator(_Base::begin(), this); }
const_iterator
begin() const noexcept
{ return const_iterator(_Base::begin(), this); }
iterator
end() noexcept
{ return iterator(_Base::end(), this); }
const_iterator
end() const noexcept
{ return const_iterator(_Base::end(), this); }
const_iterator
cbegin() const noexcept
{ return const_iterator(_Base::begin(), this); }
const_iterator
cend() const noexcept
{ return const_iterator(_Base::end(), this); }
// local versions
local_iterator
begin(size_type __b)
{ return local_iterator(_Base::begin(__b), __b, this); }
local_iterator
end(size_type __b)
{ return local_iterator(_Base::end(__b), __b, this); }
const_local_iterator
begin(size_type __b) const
{ return const_local_iterator(_Base::begin(__b), __b, this); }
const_local_iterator
end(size_type __b) const
{ return const_local_iterator(_Base::end(__b), __b, this); }
const_local_iterator
cbegin(size_type __b) const
{ return const_local_iterator(_Base::cbegin(__b), __b, this); }
const_local_iterator
cend(size_type __b) const
{ return const_local_iterator(_Base::cend(__b), __b, this); }
iterator
insert(const value_type& __obj)
{
size_type __bucket_count = this->bucket_count();
_Base_iterator __it = _Base::insert(__obj);
_M_check_rehashed(__bucket_count);
return iterator(__it, this);
}
iterator
insert(const_iterator __hint, const value_type& __obj)
{
__glibcxx_check_insert(__hint);
size_type __bucket_count = this->bucket_count();
_Base_iterator __it = _Base::insert(__hint.base(), __obj);
_M_check_rehashed(__bucket_count);
return iterator(__it, this);
}
iterator
insert(value_type&& __obj)
{
size_type __bucket_count = this->bucket_count();
_Base_iterator __it = _Base::insert(std::move(__obj));
_M_check_rehashed(__bucket_count);
return iterator(__it, this);
}
iterator
insert(const_iterator __hint, value_type&& __obj)
{
__glibcxx_check_insert(__hint);
size_type __bucket_count = this->bucket_count();
_Base_iterator __it = _Base::insert(__hint.base(), std::move(__obj));
_M_check_rehashed(__bucket_count);
return iterator(__it, this);
}
void
insert(std::initializer_list<value_type> __l)
{
size_type __bucket_count = this->bucket_count();
_Base::insert(__l);
_M_check_rehashed(__bucket_count);
}
template<typename _InputIterator>
void
insert(_InputIterator __first, _InputIterator __last)
{
__glibcxx_check_valid_range(__first, __last);
size_type __bucket_count = this->bucket_count();
_Base::insert(__gnu_debug::__base(__first),
__gnu_debug::__base(__last));
_M_check_rehashed(__bucket_count);
}
iterator
find(const key_type& __key)
{ return iterator(_Base::find(__key), this); }
const_iterator
find(const key_type& __key) const
{ return const_iterator(_Base::find(__key), this); }
std::pair<iterator, iterator>
equal_range(const key_type& __key)
{
typedef std::pair<_Base_iterator, _Base_iterator> __pair_type;
__pair_type __res = _Base::equal_range(__key);
return std::make_pair(iterator(__res.first, this),
iterator(__res.second, this));
}
std::pair<const_iterator, const_iterator>
equal_range(const key_type& __key) const
{
std::pair<_Base_const_iterator, _Base_const_iterator>
__res = _Base::equal_range(__key);
return std::make_pair(const_iterator(__res.first, this),
const_iterator(__res.second, this));
}
size_type
erase(const key_type& __key)
{
size_type __ret(0);
std::pair<_Base_iterator, _Base_iterator> __pair =
_Base::equal_range(__key);
for (_Base_iterator __victim = __pair.first; __victim != __pair.second;)
{
this->_M_invalidate_if([__victim](_Base_const_iterator __it)
{ return __it == __victim; });
_Base_local_iterator __local_victim = _S_to_local(__victim);
this->_M_invalidate_local_if(
[__local_victim](_Base_const_local_iterator __it)
{ return __it == __local_victim; });
_Base::erase(__victim++);
++__ret;
}
return __ret;
}
iterator
erase(const_iterator __it)
{
__glibcxx_check_erase(__it);
_Base_const_iterator __victim = __it.base();
this->_M_invalidate_if([__victim](_Base_const_iterator __it)
{ return __it == __victim; });
_Base_const_local_iterator __local_victim = _S_to_local(__victim);
this->_M_invalidate_local_if(
[__local_victim](_Base_const_local_iterator __it)
{ return __it == __local_victim; });
return iterator(_Base::erase(__it.base()), this);
}
iterator
erase(const_iterator __first, const_iterator __last)
{
__glibcxx_check_erase_range(__first, __last);
for (_Base_const_iterator __tmp = __first.base();
__tmp != __last.base(); ++__tmp)
{
_GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
_M_message(__gnu_debug::__msg_valid_range)
._M_iterator(__first, "first")
._M_iterator(__last, "last"));
this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
{ return __it == __tmp; });
_Base_const_local_iterator __local_tmp = _S_to_local(__tmp);
this->_M_invalidate_local_if(
[__local_tmp](_Base_const_local_iterator __it)
{ return __it == __local_tmp; });
}
return iterator(_Base::erase(__first.base(),
__last.base()), this);
}
_Base&
_M_base() noexcept { return *this; }
const _Base&
_M_base() const noexcept { return *this; }
private:
void
_M_invalidate_locals()
{
_Base_local_iterator __local_end = _Base::end(0);
this->_M_invalidate_local_if(
[__local_end](_Base_const_local_iterator __it)
{ return __it != __local_end; });
}
void
_M_invalidate_all()
{
_Base_iterator __end = _Base::end();
this->_M_invalidate_if([__end](_Base_const_iterator __it)
{ return __it != __end; });
_M_invalidate_locals();
}
void
_M_check_rehashed(size_type __prev_count)
{
if (__prev_count != this->bucket_count())
_M_invalidate_locals();
}
static _Base_local_iterator
_S_to_local(_Base_iterator __it)
{ return _Base_local_iterator(__it._M_cur_node); }
static _Base_const_local_iterator
_S_to_local(_Base_const_iterator __it)
{ return _Base_const_local_iterator(__it._M_cur_node); }
};
template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
inline void
swap(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
{ __x.swap(__y); }
template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
inline bool
operator==(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
{ return __x._M_equal(__y); }
template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
inline bool
operator!=(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
{ return !(__x == __y); }
} // namespace __debug
} // namespace std
#endif // __GXX_EXPERIMENTAL_CXX0X__
#endif
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