1 // Debugging unordered_set/unordered_multiset implementation -*- C++ -*-
3 // Copyright (C) 2003-2015 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
25 /** @file debug/unordered_set
26 * This file is a GNU debug extension to the Standard C++ Library.
29 #ifndef _GLIBCXX_DEBUG_UNORDERED_SET
30 #define _GLIBCXX_DEBUG_UNORDERED_SET 1
32 #if __cplusplus < 201103L
33 # include <bits/c++0x_warning.h>
35 # include <unordered_set>
37 #include <debug/safe_unordered_container.h>
38 #include <debug/safe_container.h>
39 #include <debug/safe_iterator.h>
40 #include <debug/safe_local_iterator.h>
42 namespace std _GLIBCXX_VISIBILITY(default)
46 /// Class std::unordered_set with safety/checking/debug instrumentation.
47 template<typename _Value,
48 typename _Hash = std::hash<_Value>,
49 typename _Pred = std::equal_to<_Value>,
50 typename _Alloc = std::allocator<_Value> >
52 : public __gnu_debug::_Safe_container<
53 unordered_set<_Value, _Hash, _Pred, _Alloc>, _Alloc,
54 __gnu_debug::_Safe_unordered_container>,
55 public _GLIBCXX_STD_C::unordered_set<_Value, _Hash, _Pred, _Alloc>
57 typedef _GLIBCXX_STD_C::unordered_set<
58 _Value, _Hash, _Pred, _Alloc> _Base;
59 typedef __gnu_debug::_Safe_container<
60 unordered_set, _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
62 typedef typename _Base::const_iterator _Base_const_iterator;
63 typedef typename _Base::iterator _Base_iterator;
64 typedef typename _Base::const_local_iterator _Base_const_local_iterator;
65 typedef typename _Base::local_iterator _Base_local_iterator;
68 typedef typename _Base::size_type size_type;
69 typedef typename _Base::hasher hasher;
70 typedef typename _Base::key_equal key_equal;
71 typedef typename _Base::allocator_type allocator_type;
73 typedef typename _Base::key_type key_type;
74 typedef typename _Base::value_type value_type;
76 typedef __gnu_debug::_Safe_iterator<
77 _Base_iterator, unordered_set> iterator;
78 typedef __gnu_debug::_Safe_iterator<
79 _Base_const_iterator, unordered_set> const_iterator;
80 typedef __gnu_debug::_Safe_local_iterator<
81 _Base_local_iterator, unordered_set> local_iterator;
82 typedef __gnu_debug::_Safe_local_iterator<
83 _Base_const_local_iterator, unordered_set> const_local_iterator;
85 unordered_set() = default;
88 unordered_set(size_type __n,
89 const hasher& __hf = hasher(),
90 const key_equal& __eql = key_equal(),
91 const allocator_type& __a = allocator_type())
92 : _Base(__n, __hf, __eql, __a) { }
94 template<typename _InputIterator>
95 unordered_set(_InputIterator __first, _InputIterator __last,
97 const hasher& __hf = hasher(),
98 const key_equal& __eql = key_equal(),
99 const allocator_type& __a = allocator_type())
100 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
102 __gnu_debug::__base(__last), __n,
103 __hf, __eql, __a) { }
105 unordered_set(const unordered_set&) = default;
107 unordered_set(const _Base& __x)
110 unordered_set(unordered_set&&) = default;
113 unordered_set(const allocator_type& __a)
116 unordered_set(const unordered_set& __uset,
117 const allocator_type& __a)
118 : _Base(__uset, __a) { }
120 unordered_set(unordered_set&& __uset,
121 const allocator_type& __a)
122 : _Safe(std::move(__uset._M_safe()), __a),
123 _Base(std::move(__uset._M_base()), __a) { }
125 unordered_set(initializer_list<value_type> __l,
127 const hasher& __hf = hasher(),
128 const key_equal& __eql = key_equal(),
129 const allocator_type& __a = allocator_type())
130 : _Base(__l, __n, __hf, __eql, __a) { }
132 unordered_set(size_type __n, const allocator_type& __a)
133 : unordered_set(__n, hasher(), key_equal(), __a)
136 unordered_set(size_type __n, const hasher& __hf,
137 const allocator_type& __a)
138 : unordered_set(__n, __hf, key_equal(), __a)
141 template<typename _InputIterator>
142 unordered_set(_InputIterator __first, _InputIterator __last,
144 const allocator_type& __a)
145 : unordered_set(__first, __last, __n, hasher(), key_equal(), __a)
148 template<typename _InputIterator>
149 unordered_set(_InputIterator __first, _InputIterator __last,
150 size_type __n, const hasher& __hf,
151 const allocator_type& __a)
152 : unordered_set(__first, __last, __n, __hf, key_equal(), __a)
155 unordered_set(initializer_list<value_type> __l,
157 const allocator_type& __a)
158 : unordered_set(__l, __n, hasher(), key_equal(), __a)
161 unordered_set(initializer_list<value_type> __l,
162 size_type __n, const hasher& __hf,
163 const allocator_type& __a)
164 : unordered_set(__l, __n, __hf, key_equal(), __a)
167 ~unordered_set() = default;
170 operator=(const unordered_set&) = default;
173 operator=(unordered_set&&) = default;
176 operator=(initializer_list<value_type> __l)
179 this->_M_invalidate_all();
184 swap(unordered_set& __x)
185 noexcept( noexcept(declval<_Base>().swap(__x)) )
195 this->_M_invalidate_all();
200 { return iterator(_Base::begin(), this); }
203 begin() const noexcept
204 { return const_iterator(_Base::begin(), this); }
208 { return iterator(_Base::end(), this); }
212 { return const_iterator(_Base::end(), this); }
215 cbegin() const noexcept
216 { return const_iterator(_Base::begin(), this); }
219 cend() const noexcept
220 { return const_iterator(_Base::end(), this); }
226 __glibcxx_check_bucket_index(__b);
227 return local_iterator(_Base::begin(__b), this);
233 __glibcxx_check_bucket_index(__b);
234 return local_iterator(_Base::end(__b), this);
238 begin(size_type __b) const
240 __glibcxx_check_bucket_index(__b);
241 return const_local_iterator(_Base::begin(__b), this);
245 end(size_type __b) const
247 __glibcxx_check_bucket_index(__b);
248 return const_local_iterator(_Base::end(__b), this);
252 cbegin(size_type __b) const
254 __glibcxx_check_bucket_index(__b);
255 return const_local_iterator(_Base::cbegin(__b), this);
259 cend(size_type __b) const
261 __glibcxx_check_bucket_index(__b);
262 return const_local_iterator(_Base::cend(__b), this);
266 bucket_size(size_type __b) const
268 __glibcxx_check_bucket_index(__b);
269 return _Base::bucket_size(__b);
273 max_load_factor() const noexcept
274 { return _Base::max_load_factor(); }
277 max_load_factor(float __f)
279 __glibcxx_check_max_load_factor(__f);
280 _Base::max_load_factor(__f);
283 template<typename... _Args>
284 std::pair<iterator, bool>
285 emplace(_Args&&... __args)
287 size_type __bucket_count = this->bucket_count();
288 std::pair<_Base_iterator, bool> __res
289 = _Base::emplace(std::forward<_Args>(__args)...);
290 _M_check_rehashed(__bucket_count);
291 return std::make_pair(iterator(__res.first, this), __res.second);
294 template<typename... _Args>
296 emplace_hint(const_iterator __hint, _Args&&... __args)
298 __glibcxx_check_insert(__hint);
299 size_type __bucket_count = this->bucket_count();
300 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
301 std::forward<_Args>(__args)...);
302 _M_check_rehashed(__bucket_count);
303 return iterator(__it, this);
306 std::pair<iterator, bool>
307 insert(const value_type& __obj)
309 size_type __bucket_count = this->bucket_count();
310 std::pair<_Base_iterator, bool> __res
311 = _Base::insert(__obj);
312 _M_check_rehashed(__bucket_count);
313 return std::make_pair(iterator(__res.first, this), __res.second);
317 insert(const_iterator __hint, const value_type& __obj)
319 __glibcxx_check_insert(__hint);
320 size_type __bucket_count = this->bucket_count();
321 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
322 _M_check_rehashed(__bucket_count);
323 return iterator(__it, this);
326 std::pair<iterator, bool>
327 insert(value_type&& __obj)
329 size_type __bucket_count = this->bucket_count();
330 std::pair<_Base_iterator, bool> __res
331 = _Base::insert(std::move(__obj));
332 _M_check_rehashed(__bucket_count);
333 return std::make_pair(iterator(__res.first, this), __res.second);
337 insert(const_iterator __hint, value_type&& __obj)
339 __glibcxx_check_insert(__hint);
340 size_type __bucket_count = this->bucket_count();
341 _Base_iterator __it = _Base::insert(__hint.base(), std::move(__obj));
342 _M_check_rehashed(__bucket_count);
343 return iterator(__it, this);
347 insert(std::initializer_list<value_type> __l)
349 size_type __bucket_count = this->bucket_count();
351 _M_check_rehashed(__bucket_count);
354 template<typename _InputIterator>
356 insert(_InputIterator __first, _InputIterator __last)
358 __glibcxx_check_valid_range(__first, __last);
359 size_type __bucket_count = this->bucket_count();
360 _Base::insert(__gnu_debug::__base(__first),
361 __gnu_debug::__base(__last));
362 _M_check_rehashed(__bucket_count);
366 find(const key_type& __key)
367 { return iterator(_Base::find(__key), this); }
370 find(const key_type& __key) const
371 { return const_iterator(_Base::find(__key), this); }
373 std::pair<iterator, iterator>
374 equal_range(const key_type& __key)
376 std::pair<_Base_iterator, _Base_iterator> __res
377 = _Base::equal_range(__key);
378 return std::make_pair(iterator(__res.first, this),
379 iterator(__res.second, this));
382 std::pair<const_iterator, const_iterator>
383 equal_range(const key_type& __key) const
385 std::pair<_Base_const_iterator, _Base_const_iterator>
386 __res = _Base::equal_range(__key);
387 return std::make_pair(const_iterator(__res.first, this),
388 const_iterator(__res.second, this));
392 erase(const key_type& __key)
395 _Base_iterator __victim(_Base::find(__key));
396 if (__victim != _Base::end())
398 this->_M_invalidate_if(
399 [__victim](_Base_const_iterator __it)
400 { return __it == __victim; });
401 this->_M_invalidate_local_if(
402 [__victim](_Base_const_local_iterator __it)
403 { return __it._M_curr() == __victim._M_cur; });
404 size_type __bucket_count = this->bucket_count();
405 _Base::erase(__victim);
406 _M_check_rehashed(__bucket_count);
413 erase(const_iterator __it)
415 __glibcxx_check_erase(__it);
416 _Base_const_iterator __victim = __it.base();
417 this->_M_invalidate_if(
418 [__victim](_Base_const_iterator __it)
419 { return __it == __victim; });
420 this->_M_invalidate_local_if(
421 [__victim](_Base_const_local_iterator __it)
422 { return __it._M_curr() == __victim._M_cur; });
423 size_type __bucket_count = this->bucket_count();
424 _Base_iterator __next = _Base::erase(__it.base());
425 _M_check_rehashed(__bucket_count);
426 return iterator(__next, this);
431 { return erase(const_iterator(__it)); }
434 erase(const_iterator __first, const_iterator __last)
436 __glibcxx_check_erase_range(__first, __last);
437 for (_Base_const_iterator __tmp = __first.base();
438 __tmp != __last.base(); ++__tmp)
440 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
441 _M_message(__gnu_debug::__msg_valid_range)
442 ._M_iterator(__first, "first")
443 ._M_iterator(__last, "last"));
444 this->_M_invalidate_if(
445 [__tmp](_Base_const_iterator __it)
446 { return __it == __tmp; });
447 this->_M_invalidate_local_if(
448 [__tmp](_Base_const_local_iterator __it)
449 { return __it._M_curr() == __tmp._M_cur; });
451 size_type __bucket_count = this->bucket_count();
452 _Base_iterator __next = _Base::erase(__first.base(),
454 _M_check_rehashed(__bucket_count);
455 return iterator(__next, this);
459 _M_base() noexcept { return *this; }
462 _M_base() const noexcept { return *this; }
466 _M_check_rehashed(size_type __prev_count)
468 if (__prev_count != this->bucket_count())
469 this->_M_invalidate_locals();
473 template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
475 swap(unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
476 unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
479 template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
481 operator==(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
482 const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
483 { return __x._M_base() == __y._M_base(); }
485 template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
487 operator!=(const unordered_set<_Value, _Hash, _Pred, _Alloc>& __x,
488 const unordered_set<_Value, _Hash, _Pred, _Alloc>& __y)
489 { return !(__x == __y); }
492 /// Class std::unordered_multiset with safety/checking/debug instrumentation.
493 template<typename _Value,
494 typename _Hash = std::hash<_Value>,
495 typename _Pred = std::equal_to<_Value>,
496 typename _Alloc = std::allocator<_Value> >
497 class unordered_multiset
498 : public __gnu_debug::_Safe_container<
499 unordered_multiset<_Value, _Hash, _Pred, _Alloc>, _Alloc,
500 __gnu_debug::_Safe_unordered_container>,
501 public _GLIBCXX_STD_C::unordered_multiset<_Value, _Hash, _Pred, _Alloc>
503 typedef _GLIBCXX_STD_C::unordered_multiset<
504 _Value, _Hash, _Pred, _Alloc> _Base;
505 typedef __gnu_debug::_Safe_container<unordered_multiset,
506 _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
507 typedef typename _Base::const_iterator _Base_const_iterator;
508 typedef typename _Base::iterator _Base_iterator;
509 typedef typename _Base::const_local_iterator
510 _Base_const_local_iterator;
511 typedef typename _Base::local_iterator _Base_local_iterator;
514 typedef typename _Base::size_type size_type;
515 typedef typename _Base::hasher hasher;
516 typedef typename _Base::key_equal key_equal;
517 typedef typename _Base::allocator_type allocator_type;
519 typedef typename _Base::key_type key_type;
520 typedef typename _Base::value_type value_type;
522 typedef __gnu_debug::_Safe_iterator<
523 _Base_iterator, unordered_multiset> iterator;
524 typedef __gnu_debug::_Safe_iterator<
525 _Base_const_iterator, unordered_multiset> const_iterator;
526 typedef __gnu_debug::_Safe_local_iterator<
527 _Base_local_iterator, unordered_multiset> local_iterator;
528 typedef __gnu_debug::_Safe_local_iterator<
529 _Base_const_local_iterator, unordered_multiset> const_local_iterator;
531 unordered_multiset() = default;
534 unordered_multiset(size_type __n,
535 const hasher& __hf = hasher(),
536 const key_equal& __eql = key_equal(),
537 const allocator_type& __a = allocator_type())
538 : _Base(__n, __hf, __eql, __a) { }
540 template<typename _InputIterator>
541 unordered_multiset(_InputIterator __first, _InputIterator __last,
543 const hasher& __hf = hasher(),
544 const key_equal& __eql = key_equal(),
545 const allocator_type& __a = allocator_type())
546 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
548 __gnu_debug::__base(__last), __n,
549 __hf, __eql, __a) { }
551 unordered_multiset(const unordered_multiset&) = default;
553 unordered_multiset(const _Base& __x)
556 unordered_multiset(unordered_multiset&&) = default;
559 unordered_multiset(const allocator_type& __a)
562 unordered_multiset(const unordered_multiset& __uset,
563 const allocator_type& __a)
564 : _Base(__uset, __a) { }
566 unordered_multiset(unordered_multiset&& __uset,
567 const allocator_type& __a)
568 : _Safe(std::move(__uset._M_safe()), __a),
569 _Base(std::move(__uset._M_base()), __a) { }
571 unordered_multiset(initializer_list<value_type> __l,
573 const hasher& __hf = hasher(),
574 const key_equal& __eql = key_equal(),
575 const allocator_type& __a = allocator_type())
576 : _Base(__l, __n, __hf, __eql, __a) { }
578 unordered_multiset(size_type __n, const allocator_type& __a)
579 : unordered_multiset(__n, hasher(), key_equal(), __a)
582 unordered_multiset(size_type __n, const hasher& __hf,
583 const allocator_type& __a)
584 : unordered_multiset(__n, __hf, key_equal(), __a)
587 template<typename _InputIterator>
588 unordered_multiset(_InputIterator __first, _InputIterator __last,
590 const allocator_type& __a)
591 : unordered_multiset(__first, __last, __n, hasher(), key_equal(), __a)
594 template<typename _InputIterator>
595 unordered_multiset(_InputIterator __first, _InputIterator __last,
596 size_type __n, const hasher& __hf,
597 const allocator_type& __a)
598 : unordered_multiset(__first, __last, __n, __hf, key_equal(), __a)
601 unordered_multiset(initializer_list<value_type> __l,
603 const allocator_type& __a)
604 : unordered_multiset(__l, __n, hasher(), key_equal(), __a)
607 unordered_multiset(initializer_list<value_type> __l,
608 size_type __n, const hasher& __hf,
609 const allocator_type& __a)
610 : unordered_multiset(__l, __n, __hf, key_equal(), __a)
613 ~unordered_multiset() = default;
616 operator=(const unordered_multiset&) = default;
619 operator=(unordered_multiset&&) = default;
622 operator=(initializer_list<value_type> __l)
624 this->_M_base() = __l;
625 this->_M_invalidate_all();
630 swap(unordered_multiset& __x)
631 noexcept( noexcept(declval<_Base>().swap(__x)) )
641 this->_M_invalidate_all();
646 { return iterator(_Base::begin(), this); }
649 begin() const noexcept
650 { return const_iterator(_Base::begin(), this); }
654 { return iterator(_Base::end(), this); }
658 { return const_iterator(_Base::end(), this); }
661 cbegin() const noexcept
662 { return const_iterator(_Base::begin(), this); }
665 cend() const noexcept
666 { return const_iterator(_Base::end(), this); }
672 __glibcxx_check_bucket_index(__b);
673 return local_iterator(_Base::begin(__b), this);
679 __glibcxx_check_bucket_index(__b);
680 return local_iterator(_Base::end(__b), this);
684 begin(size_type __b) const
686 __glibcxx_check_bucket_index(__b);
687 return const_local_iterator(_Base::begin(__b), this);
691 end(size_type __b) const
693 __glibcxx_check_bucket_index(__b);
694 return const_local_iterator(_Base::end(__b), this);
698 cbegin(size_type __b) const
700 __glibcxx_check_bucket_index(__b);
701 return const_local_iterator(_Base::cbegin(__b), this);
705 cend(size_type __b) const
707 __glibcxx_check_bucket_index(__b);
708 return const_local_iterator(_Base::cend(__b), this);
712 bucket_size(size_type __b) const
714 __glibcxx_check_bucket_index(__b);
715 return _Base::bucket_size(__b);
719 max_load_factor() const noexcept
720 { return _Base::max_load_factor(); }
723 max_load_factor(float __f)
725 __glibcxx_check_max_load_factor(__f);
726 _Base::max_load_factor(__f);
729 template<typename... _Args>
731 emplace(_Args&&... __args)
733 size_type __bucket_count = this->bucket_count();
735 = _Base::emplace(std::forward<_Args>(__args)...);
736 _M_check_rehashed(__bucket_count);
737 return iterator(__it, this);
740 template<typename... _Args>
742 emplace_hint(const_iterator __hint, _Args&&... __args)
744 __glibcxx_check_insert(__hint);
745 size_type __bucket_count = this->bucket_count();
746 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
747 std::forward<_Args>(__args)...);
748 _M_check_rehashed(__bucket_count);
749 return iterator(__it, this);
753 insert(const value_type& __obj)
755 size_type __bucket_count = this->bucket_count();
756 _Base_iterator __it = _Base::insert(__obj);
757 _M_check_rehashed(__bucket_count);
758 return iterator(__it, this);
762 insert(const_iterator __hint, const value_type& __obj)
764 __glibcxx_check_insert(__hint);
765 size_type __bucket_count = this->bucket_count();
766 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
767 _M_check_rehashed(__bucket_count);
768 return iterator(__it, this);
772 insert(value_type&& __obj)
774 size_type __bucket_count = this->bucket_count();
775 _Base_iterator __it = _Base::insert(std::move(__obj));
776 _M_check_rehashed(__bucket_count);
777 return iterator(__it, this);
781 insert(const_iterator __hint, value_type&& __obj)
783 __glibcxx_check_insert(__hint);
784 size_type __bucket_count = this->bucket_count();
785 _Base_iterator __it = _Base::insert(__hint.base(), std::move(__obj));
786 _M_check_rehashed(__bucket_count);
787 return iterator(__it, this);
791 insert(std::initializer_list<value_type> __l)
793 size_type __bucket_count = this->bucket_count();
795 _M_check_rehashed(__bucket_count);
798 template<typename _InputIterator>
800 insert(_InputIterator __first, _InputIterator __last)
802 __glibcxx_check_valid_range(__first, __last);
803 size_type __bucket_count = this->bucket_count();
804 _Base::insert(__gnu_debug::__base(__first),
805 __gnu_debug::__base(__last));
806 _M_check_rehashed(__bucket_count);
810 find(const key_type& __key)
811 { return iterator(_Base::find(__key), this); }
814 find(const key_type& __key) const
815 { return const_iterator(_Base::find(__key), this); }
817 std::pair<iterator, iterator>
818 equal_range(const key_type& __key)
820 std::pair<_Base_iterator, _Base_iterator> __res
821 = _Base::equal_range(__key);
822 return std::make_pair(iterator(__res.first, this),
823 iterator(__res.second, this));
826 std::pair<const_iterator, const_iterator>
827 equal_range(const key_type& __key) const
829 std::pair<_Base_const_iterator, _Base_const_iterator>
830 __res = _Base::equal_range(__key);
831 return std::make_pair(const_iterator(__res.first, this),
832 const_iterator(__res.second, this));
836 erase(const key_type& __key)
839 std::pair<_Base_iterator, _Base_iterator> __pair =
840 _Base::equal_range(__key);
841 for (_Base_iterator __victim = __pair.first; __victim != __pair.second;)
843 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
844 { return __it == __victim; });
845 this->_M_invalidate_local_if(
846 [__victim](_Base_const_local_iterator __it)
847 { return __it._M_curr() == __victim._M_cur; });
848 _Base::erase(__victim++);
855 erase(const_iterator __it)
857 __glibcxx_check_erase(__it);
858 _Base_const_iterator __victim = __it.base();
859 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
860 { return __it == __victim; });
861 this->_M_invalidate_local_if(
862 [__victim](_Base_const_local_iterator __it)
863 { return __it._M_curr() == __victim._M_cur; });
864 return iterator(_Base::erase(__it.base()), this);
869 { return erase(const_iterator(__it)); }
872 erase(const_iterator __first, const_iterator __last)
874 __glibcxx_check_erase_range(__first, __last);
875 for (_Base_const_iterator __tmp = __first.base();
876 __tmp != __last.base(); ++__tmp)
878 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
879 _M_message(__gnu_debug::__msg_valid_range)
880 ._M_iterator(__first, "first")
881 ._M_iterator(__last, "last"));
882 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
883 { return __it == __tmp; });
884 this->_M_invalidate_local_if(
885 [__tmp](_Base_const_local_iterator __it)
886 { return __it._M_curr() == __tmp._M_cur; });
888 return iterator(_Base::erase(__first.base(),
889 __last.base()), this);
893 _M_base() noexcept { return *this; }
896 _M_base() const noexcept { return *this; }
900 _M_check_rehashed(size_type __prev_count)
902 if (__prev_count != this->bucket_count())
903 this->_M_invalidate_locals();
907 template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
909 swap(unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
910 unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
913 template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
915 operator==(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
916 const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
917 { return __x._M_base() == __y._M_base(); }
919 template<typename _Value, typename _Hash, typename _Pred, typename _Alloc>
921 operator!=(const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __x,
922 const unordered_multiset<_Value, _Hash, _Pred, _Alloc>& __y)
923 { return !(__x == __y); }
925 } // namespace __debug