1 // Debugging unordered_map/unordered_multimap 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_map
26 * This file is a GNU debug extension to the Standard C++ Library.
29 #ifndef _GLIBCXX_DEBUG_UNORDERED_MAP
30 #define _GLIBCXX_DEBUG_UNORDERED_MAP 1
32 #if __cplusplus < 201103L
33 # include <bits/c++0x_warning.h>
35 # include <unordered_map>
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_map with safety/checking/debug instrumentation.
47 template<typename _Key, typename _Tp,
48 typename _Hash = std::hash<_Key>,
49 typename _Pred = std::equal_to<_Key>,
50 typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
52 : public __gnu_debug::_Safe_container<
53 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>, _Alloc,
54 __gnu_debug::_Safe_unordered_container>,
55 public _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>
57 typedef _GLIBCXX_STD_C::unordered_map<_Key, _Tp, _Hash,
59 typedef __gnu_debug::_Safe_container<unordered_map,
60 _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
61 typedef typename _Base::const_iterator _Base_const_iterator;
62 typedef typename _Base::iterator _Base_iterator;
63 typedef typename _Base::const_local_iterator
64 _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_map> iterator;
78 typedef __gnu_debug::_Safe_iterator<
79 _Base_const_iterator, unordered_map> const_iterator;
80 typedef __gnu_debug::_Safe_local_iterator<
81 _Base_local_iterator, unordered_map> local_iterator;
82 typedef __gnu_debug::_Safe_local_iterator<
83 _Base_const_local_iterator, unordered_map> const_local_iterator;
85 unordered_map() = default;
88 unordered_map(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_map(_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_map(const unordered_map&) = default;
107 unordered_map(const _Base& __x)
110 unordered_map(unordered_map&&) = default;
113 unordered_map(const allocator_type& __a)
116 unordered_map(const unordered_map& __umap,
117 const allocator_type& __a)
118 : _Base(__umap, __a) { }
120 unordered_map(unordered_map&& __umap,
121 const allocator_type& __a)
122 : _Safe(std::move(__umap._M_safe()), __a),
123 _Base(std::move(__umap._M_base()), __a) { }
125 unordered_map(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_map(size_type __n, const allocator_type& __a)
133 : unordered_map(__n, hasher(), key_equal(), __a)
136 unordered_map(size_type __n,
138 const allocator_type& __a)
139 : unordered_map(__n, __hf, key_equal(), __a)
142 template<typename _InputIterator>
143 unordered_map(_InputIterator __first, _InputIterator __last,
145 const allocator_type& __a)
146 : unordered_map(__first, __last, __n, hasher(), key_equal(), __a)
149 template<typename _InputIterator>
150 unordered_map(_InputIterator __first, _InputIterator __last,
153 const allocator_type& __a)
154 : unordered_map(__first, __last, __n, __hf, key_equal(), __a)
157 unordered_map(initializer_list<value_type> __l,
159 const allocator_type& __a)
160 : unordered_map(__l, __n, hasher(), key_equal(), __a)
163 unordered_map(initializer_list<value_type> __l,
166 const allocator_type& __a)
167 : unordered_map(__l, __n, __hf, key_equal(), __a)
170 ~unordered_map() = default;
173 operator=(const unordered_map&) = default;
176 operator=(unordered_map&&) = default;
179 operator=(initializer_list<value_type> __l)
182 this->_M_invalidate_all();
187 swap(unordered_map& __x)
188 noexcept( noexcept(declval<_Base>().swap(__x)) )
198 this->_M_invalidate_all();
203 { return iterator(_Base::begin(), this); }
206 begin() const noexcept
207 { return const_iterator(_Base::begin(), this); }
211 { return iterator(_Base::end(), this); }
215 { return const_iterator(_Base::end(), this); }
218 cbegin() const noexcept
219 { return const_iterator(_Base::begin(), this); }
222 cend() const noexcept
223 { return const_iterator(_Base::end(), this); }
229 __glibcxx_check_bucket_index(__b);
230 return local_iterator(_Base::begin(__b), this);
236 __glibcxx_check_bucket_index(__b);
237 return local_iterator(_Base::end(__b), this);
241 begin(size_type __b) const
243 __glibcxx_check_bucket_index(__b);
244 return const_local_iterator(_Base::begin(__b), this);
248 end(size_type __b) const
250 __glibcxx_check_bucket_index(__b);
251 return const_local_iterator(_Base::end(__b), this);
255 cbegin(size_type __b) const
257 __glibcxx_check_bucket_index(__b);
258 return const_local_iterator(_Base::cbegin(__b), this);
262 cend(size_type __b) const
264 __glibcxx_check_bucket_index(__b);
265 return const_local_iterator(_Base::cend(__b), this);
269 bucket_size(size_type __b) const
271 __glibcxx_check_bucket_index(__b);
272 return _Base::bucket_size(__b);
276 max_load_factor() const noexcept
277 { return _Base::max_load_factor(); }
280 max_load_factor(float __f)
282 __glibcxx_check_max_load_factor(__f);
283 _Base::max_load_factor(__f);
286 template<typename... _Args>
287 std::pair<iterator, bool>
288 emplace(_Args&&... __args)
290 size_type __bucket_count = this->bucket_count();
291 std::pair<_Base_iterator, bool> __res
292 = _Base::emplace(std::forward<_Args>(__args)...);
293 _M_check_rehashed(__bucket_count);
294 return std::make_pair(iterator(__res.first, this), __res.second);
297 template<typename... _Args>
299 emplace_hint(const_iterator __hint, _Args&&... __args)
301 __glibcxx_check_insert(__hint);
302 size_type __bucket_count = this->bucket_count();
303 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
304 std::forward<_Args>(__args)...);
305 _M_check_rehashed(__bucket_count);
306 return iterator(__it, this);
309 std::pair<iterator, bool>
310 insert(const value_type& __obj)
312 size_type __bucket_count = this->bucket_count();
313 std::pair<_Base_iterator, bool> __res = _Base::insert(__obj);
314 _M_check_rehashed(__bucket_count);
315 return std::make_pair(iterator(__res.first, this), __res.second);
319 insert(const_iterator __hint, const value_type& __obj)
321 __glibcxx_check_insert(__hint);
322 size_type __bucket_count = this->bucket_count();
323 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
324 _M_check_rehashed(__bucket_count);
325 return iterator(__it, this);
328 template<typename _Pair, typename = typename
329 std::enable_if<std::is_constructible<value_type,
330 _Pair&&>::value>::type>
331 std::pair<iterator, bool>
332 insert(_Pair&& __obj)
334 size_type __bucket_count = this->bucket_count();
335 std::pair<_Base_iterator, bool> __res =
336 _Base::insert(std::forward<_Pair>(__obj));
337 _M_check_rehashed(__bucket_count);
338 return std::make_pair(iterator(__res.first, this), __res.second);
341 template<typename _Pair, typename = typename
342 std::enable_if<std::is_constructible<value_type,
343 _Pair&&>::value>::type>
345 insert(const_iterator __hint, _Pair&& __obj)
347 __glibcxx_check_insert(__hint);
348 size_type __bucket_count = this->bucket_count();
349 _Base_iterator __it =
350 _Base::insert(__hint.base(), std::forward<_Pair>(__obj));
351 _M_check_rehashed(__bucket_count);
352 return iterator(__it, this);
356 insert(std::initializer_list<value_type> __l)
358 size_type __bucket_count = this->bucket_count();
360 _M_check_rehashed(__bucket_count);
363 template<typename _InputIterator>
365 insert(_InputIterator __first, _InputIterator __last)
367 __glibcxx_check_valid_range(__first, __last);
368 size_type __bucket_count = this->bucket_count();
369 _Base::insert(__gnu_debug::__base(__first),
370 __gnu_debug::__base(__last));
371 _M_check_rehashed(__bucket_count);
375 find(const key_type& __key)
376 { return iterator(_Base::find(__key), this); }
379 find(const key_type& __key) const
380 { return const_iterator(_Base::find(__key), this); }
382 std::pair<iterator, iterator>
383 equal_range(const key_type& __key)
385 std::pair<_Base_iterator, _Base_iterator> __res =
386 _Base::equal_range(__key);
387 return std::make_pair(iterator(__res.first, this),
388 iterator(__res.second, this));
391 std::pair<const_iterator, const_iterator>
392 equal_range(const key_type& __key) const
394 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
395 _Base::equal_range(__key);
396 return std::make_pair(const_iterator(__res.first, this),
397 const_iterator(__res.second, this));
401 erase(const key_type& __key)
404 _Base_iterator __victim(_Base::find(__key));
405 if (__victim != _Base::end())
407 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
408 { return __it == __victim; });
409 this->_M_invalidate_local_if(
410 [__victim](_Base_const_local_iterator __it)
411 { return __it._M_curr() == __victim._M_cur; });
412 size_type __bucket_count = this->bucket_count();
413 _Base::erase(__victim);
414 _M_check_rehashed(__bucket_count);
421 erase(const_iterator __it)
423 __glibcxx_check_erase(__it);
424 _Base_const_iterator __victim = __it.base();
425 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
426 { return __it == __victim; });
427 this->_M_invalidate_local_if(
428 [__victim](_Base_const_local_iterator __it)
429 { return __it._M_curr() == __victim._M_cur; });
430 size_type __bucket_count = this->bucket_count();
431 _Base_iterator __next = _Base::erase(__it.base());
432 _M_check_rehashed(__bucket_count);
433 return iterator(__next, this);
438 { return erase(const_iterator(__it)); }
441 erase(const_iterator __first, const_iterator __last)
443 __glibcxx_check_erase_range(__first, __last);
444 for (_Base_const_iterator __tmp = __first.base();
445 __tmp != __last.base(); ++__tmp)
447 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
448 _M_message(__gnu_debug::__msg_valid_range)
449 ._M_iterator(__first, "first")
450 ._M_iterator(__last, "last"));
451 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
452 { return __it == __tmp; });
453 this->_M_invalidate_local_if(
454 [__tmp](_Base_const_local_iterator __it)
455 { return __it._M_curr() == __tmp._M_cur; });
457 size_type __bucket_count = this->bucket_count();
458 _Base_iterator __next = _Base::erase(__first.base(), __last.base());
459 _M_check_rehashed(__bucket_count);
460 return iterator(__next, this);
464 _M_base() noexcept { return *this; }
467 _M_base() const noexcept { return *this; }
471 _M_check_rehashed(size_type __prev_count)
473 if (__prev_count != this->bucket_count())
474 this->_M_invalidate_locals();
478 template<typename _Key, typename _Tp, typename _Hash,
479 typename _Pred, typename _Alloc>
481 swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
482 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
485 template<typename _Key, typename _Tp, typename _Hash,
486 typename _Pred, typename _Alloc>
488 operator==(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
489 const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
490 { return __x._M_base() == __y._M_base(); }
492 template<typename _Key, typename _Tp, typename _Hash,
493 typename _Pred, typename _Alloc>
495 operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
496 const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
497 { return !(__x == __y); }
500 /// Class std::unordered_multimap with safety/checking/debug instrumentation.
501 template<typename _Key, typename _Tp,
502 typename _Hash = std::hash<_Key>,
503 typename _Pred = std::equal_to<_Key>,
504 typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
505 class unordered_multimap
506 : public __gnu_debug::_Safe_container<
507 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>, _Alloc,
508 __gnu_debug::_Safe_unordered_container>,
509 public _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>
511 typedef _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash,
512 _Pred, _Alloc> _Base;
513 typedef __gnu_debug::_Safe_container<unordered_multimap,
514 _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
515 typedef typename _Base::const_iterator _Base_const_iterator;
516 typedef typename _Base::iterator _Base_iterator;
517 typedef typename _Base::const_local_iterator _Base_const_local_iterator;
518 typedef typename _Base::local_iterator _Base_local_iterator;
521 typedef typename _Base::size_type size_type;
522 typedef typename _Base::hasher hasher;
523 typedef typename _Base::key_equal key_equal;
524 typedef typename _Base::allocator_type allocator_type;
526 typedef typename _Base::key_type key_type;
527 typedef typename _Base::value_type value_type;
529 typedef __gnu_debug::_Safe_iterator<
530 _Base_iterator, unordered_multimap> iterator;
531 typedef __gnu_debug::_Safe_iterator<
532 _Base_const_iterator, unordered_multimap> const_iterator;
533 typedef __gnu_debug::_Safe_local_iterator<
534 _Base_local_iterator, unordered_multimap> local_iterator;
535 typedef __gnu_debug::_Safe_local_iterator<
536 _Base_const_local_iterator, unordered_multimap> const_local_iterator;
538 unordered_multimap() = default;
541 unordered_multimap(size_type __n,
542 const hasher& __hf = hasher(),
543 const key_equal& __eql = key_equal(),
544 const allocator_type& __a = allocator_type())
545 : _Base(__n, __hf, __eql, __a) { }
547 template<typename _InputIterator>
548 unordered_multimap(_InputIterator __first, _InputIterator __last,
550 const hasher& __hf = hasher(),
551 const key_equal& __eql = key_equal(),
552 const allocator_type& __a = allocator_type())
553 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
555 __gnu_debug::__base(__last), __n,
556 __hf, __eql, __a) { }
558 unordered_multimap(const unordered_multimap&) = default;
560 unordered_multimap(const _Base& __x)
563 unordered_multimap(unordered_multimap&&) = default;
566 unordered_multimap(const allocator_type& __a)
569 unordered_multimap(const unordered_multimap& __umap,
570 const allocator_type& __a)
571 : _Base(__umap, __a) { }
573 unordered_multimap(unordered_multimap&& __umap,
574 const allocator_type& __a)
575 : _Safe(std::move(__umap._M_safe()), __a),
576 _Base(std::move(__umap._M_base()), __a) { }
578 unordered_multimap(initializer_list<value_type> __l,
580 const hasher& __hf = hasher(),
581 const key_equal& __eql = key_equal(),
582 const allocator_type& __a = allocator_type())
583 : _Base(__l, __n, __hf, __eql, __a) { }
585 unordered_multimap(size_type __n, const allocator_type& __a)
586 : unordered_multimap(__n, hasher(), key_equal(), __a)
589 unordered_multimap(size_type __n, const hasher& __hf,
590 const allocator_type& __a)
591 : unordered_multimap(__n, __hf, key_equal(), __a)
594 template<typename _InputIterator>
595 unordered_multimap(_InputIterator __first, _InputIterator __last,
597 const allocator_type& __a)
598 : unordered_multimap(__first, __last, __n, hasher(), key_equal(), __a)
601 template<typename _InputIterator>
602 unordered_multimap(_InputIterator __first, _InputIterator __last,
603 size_type __n, const hasher& __hf,
604 const allocator_type& __a)
605 : unordered_multimap(__first, __last, __n, __hf, key_equal(), __a)
608 unordered_multimap(initializer_list<value_type> __l,
610 const allocator_type& __a)
611 : unordered_multimap(__l, __n, hasher(), key_equal(), __a)
614 unordered_multimap(initializer_list<value_type> __l,
615 size_type __n, const hasher& __hf,
616 const allocator_type& __a)
617 : unordered_multimap(__l, __n, __hf, key_equal(), __a)
620 ~unordered_multimap() = default;
623 operator=(const unordered_multimap&) = default;
626 operator=(unordered_multimap&&) = default;
629 operator=(initializer_list<value_type> __l)
631 this->_M_base() = __l;
632 this->_M_invalidate_all();
637 swap(unordered_multimap& __x)
638 noexcept( noexcept(declval<_Base>().swap(__x)) )
648 this->_M_invalidate_all();
653 { return iterator(_Base::begin(), this); }
656 begin() const noexcept
657 { return const_iterator(_Base::begin(), this); }
661 { return iterator(_Base::end(), this); }
665 { return const_iterator(_Base::end(), this); }
668 cbegin() const noexcept
669 { return const_iterator(_Base::begin(), this); }
672 cend() const noexcept
673 { return const_iterator(_Base::end(), this); }
679 __glibcxx_check_bucket_index(__b);
680 return local_iterator(_Base::begin(__b), this);
686 __glibcxx_check_bucket_index(__b);
687 return local_iterator(_Base::end(__b), this);
691 begin(size_type __b) const
693 __glibcxx_check_bucket_index(__b);
694 return const_local_iterator(_Base::begin(__b), this);
698 end(size_type __b) const
700 __glibcxx_check_bucket_index(__b);
701 return const_local_iterator(_Base::end(__b), this);
705 cbegin(size_type __b) const
707 __glibcxx_check_bucket_index(__b);
708 return const_local_iterator(_Base::cbegin(__b), this);
712 cend(size_type __b) const
714 __glibcxx_check_bucket_index(__b);
715 return const_local_iterator(_Base::cend(__b), this);
719 bucket_size(size_type __b) const
721 __glibcxx_check_bucket_index(__b);
722 return _Base::bucket_size(__b);
726 max_load_factor() const noexcept
727 { return _Base::max_load_factor(); }
730 max_load_factor(float __f)
732 __glibcxx_check_max_load_factor(__f);
733 _Base::max_load_factor(__f);
736 template<typename... _Args>
738 emplace(_Args&&... __args)
740 size_type __bucket_count = this->bucket_count();
742 = _Base::emplace(std::forward<_Args>(__args)...);
743 _M_check_rehashed(__bucket_count);
744 return iterator(__it, this);
747 template<typename... _Args>
749 emplace_hint(const_iterator __hint, _Args&&... __args)
751 __glibcxx_check_insert(__hint);
752 size_type __bucket_count = this->bucket_count();
753 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
754 std::forward<_Args>(__args)...);
755 _M_check_rehashed(__bucket_count);
756 return iterator(__it, this);
760 insert(const value_type& __obj)
762 size_type __bucket_count = this->bucket_count();
763 _Base_iterator __it = _Base::insert(__obj);
764 _M_check_rehashed(__bucket_count);
765 return iterator(__it, this);
769 insert(const_iterator __hint, const value_type& __obj)
771 __glibcxx_check_insert(__hint);
772 size_type __bucket_count = this->bucket_count();
773 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
774 _M_check_rehashed(__bucket_count);
775 return iterator(__it, this);
778 template<typename _Pair, typename = typename
779 std::enable_if<std::is_constructible<value_type,
780 _Pair&&>::value>::type>
782 insert(_Pair&& __obj)
784 size_type __bucket_count = this->bucket_count();
785 _Base_iterator __it = _Base::insert(std::forward<_Pair>(__obj));
786 _M_check_rehashed(__bucket_count);
787 return iterator(__it, this);
790 template<typename _Pair, typename = typename
791 std::enable_if<std::is_constructible<value_type,
792 _Pair&&>::value>::type>
794 insert(const_iterator __hint, _Pair&& __obj)
796 __glibcxx_check_insert(__hint);
797 size_type __bucket_count = this->bucket_count();
798 _Base_iterator __it =
799 _Base::insert(__hint.base(), std::forward<_Pair>(__obj));
800 _M_check_rehashed(__bucket_count);
801 return iterator(__it, this);
805 insert(std::initializer_list<value_type> __l)
806 { _Base::insert(__l); }
808 template<typename _InputIterator>
810 insert(_InputIterator __first, _InputIterator __last)
812 __glibcxx_check_valid_range(__first, __last);
813 size_type __bucket_count = this->bucket_count();
814 _Base::insert(__gnu_debug::__base(__first),
815 __gnu_debug::__base(__last));
816 _M_check_rehashed(__bucket_count);
820 find(const key_type& __key)
821 { return iterator(_Base::find(__key), this); }
824 find(const key_type& __key) const
825 { return const_iterator(_Base::find(__key), this); }
827 std::pair<iterator, iterator>
828 equal_range(const key_type& __key)
830 std::pair<_Base_iterator, _Base_iterator> __res =
831 _Base::equal_range(__key);
832 return std::make_pair(iterator(__res.first, this),
833 iterator(__res.second, this));
836 std::pair<const_iterator, const_iterator>
837 equal_range(const key_type& __key) const
839 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
840 _Base::equal_range(__key);
841 return std::make_pair(const_iterator(__res.first, this),
842 const_iterator(__res.second, this));
846 erase(const key_type& __key)
849 size_type __bucket_count = this->bucket_count();
850 std::pair<_Base_iterator, _Base_iterator> __pair =
851 _Base::equal_range(__key);
852 for (_Base_iterator __victim = __pair.first; __victim != __pair.second;)
854 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
855 { return __it == __victim; });
856 this->_M_invalidate_local_if(
857 [__victim](_Base_const_local_iterator __it)
858 { return __it._M_curr() == __victim._M_cur; });
859 _Base::erase(__victim++);
862 _M_check_rehashed(__bucket_count);
867 erase(const_iterator __it)
869 __glibcxx_check_erase(__it);
870 _Base_const_iterator __victim = __it.base();
871 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
872 { return __it == __victim; });
873 this->_M_invalidate_local_if(
874 [__victim](_Base_const_local_iterator __it)
875 { return __it._M_curr() == __victim._M_cur; });
876 size_type __bucket_count = this->bucket_count();
877 _Base_iterator __next = _Base::erase(__it.base());
878 _M_check_rehashed(__bucket_count);
879 return iterator(__next, this);
884 { return erase(const_iterator(__it)); }
887 erase(const_iterator __first, const_iterator __last)
889 __glibcxx_check_erase_range(__first, __last);
890 for (_Base_const_iterator __tmp = __first.base();
891 __tmp != __last.base(); ++__tmp)
893 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
894 _M_message(__gnu_debug::__msg_valid_range)
895 ._M_iterator(__first, "first")
896 ._M_iterator(__last, "last"));
897 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
898 { return __it == __tmp; });
899 this->_M_invalidate_local_if(
900 [__tmp](_Base_const_local_iterator __it)
901 { return __it._M_curr() == __tmp._M_cur; });
903 size_type __bucket_count = this->bucket_count();
904 _Base_iterator __next = _Base::erase(__first.base(), __last.base());
905 _M_check_rehashed(__bucket_count);
906 return iterator(__next, this);
910 _M_base() noexcept { return *this; }
913 _M_base() const noexcept { return *this; }
917 _M_check_rehashed(size_type __prev_count)
919 if (__prev_count != this->bucket_count())
920 this->_M_invalidate_locals();
924 template<typename _Key, typename _Tp, typename _Hash,
925 typename _Pred, typename _Alloc>
927 swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
928 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
931 template<typename _Key, typename _Tp, typename _Hash,
932 typename _Pred, typename _Alloc>
934 operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
935 const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
936 { return __x._M_base() == __y._M_base(); }
938 template<typename _Key, typename _Tp, typename _Hash,
939 typename _Pred, typename _Alloc>
941 operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
942 const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
943 { return !(__x == __y); }
945 } // namespace __debug