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 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
368 __glibcxx_check_valid_range2(__first, __last, __dist);
369 size_type __bucket_count = this->bucket_count();
371 if (__dist.second >= __gnu_debug::__dp_sign)
372 _Base::insert(__gnu_debug::__unsafe(__first),
373 __gnu_debug::__unsafe(__last));
375 _Base::insert(__first, __last);
377 _M_check_rehashed(__bucket_count);
381 find(const key_type& __key)
382 { return iterator(_Base::find(__key), this); }
385 find(const key_type& __key) const
386 { return const_iterator(_Base::find(__key), this); }
388 std::pair<iterator, iterator>
389 equal_range(const key_type& __key)
391 std::pair<_Base_iterator, _Base_iterator> __res =
392 _Base::equal_range(__key);
393 return std::make_pair(iterator(__res.first, this),
394 iterator(__res.second, this));
397 std::pair<const_iterator, const_iterator>
398 equal_range(const key_type& __key) const
400 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
401 _Base::equal_range(__key);
402 return std::make_pair(const_iterator(__res.first, this),
403 const_iterator(__res.second, this));
407 erase(const key_type& __key)
410 _Base_iterator __victim(_Base::find(__key));
411 if (__victim != _Base::end())
413 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
414 { return __it == __victim; });
415 this->_M_invalidate_local_if(
416 [__victim](_Base_const_local_iterator __it)
417 { return __it._M_curr() == __victim._M_cur; });
418 size_type __bucket_count = this->bucket_count();
419 _Base::erase(__victim);
420 _M_check_rehashed(__bucket_count);
427 erase(const_iterator __it)
429 __glibcxx_check_erase(__it);
430 _Base_const_iterator __victim = __it.base();
431 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
432 { return __it == __victim; });
433 this->_M_invalidate_local_if(
434 [__victim](_Base_const_local_iterator __it)
435 { return __it._M_curr() == __victim._M_cur; });
436 size_type __bucket_count = this->bucket_count();
437 _Base_iterator __next = _Base::erase(__it.base());
438 _M_check_rehashed(__bucket_count);
439 return iterator(__next, this);
444 { return erase(const_iterator(__it)); }
447 erase(const_iterator __first, const_iterator __last)
449 __glibcxx_check_erase_range(__first, __last);
450 for (_Base_const_iterator __tmp = __first.base();
451 __tmp != __last.base(); ++__tmp)
453 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
454 _M_message(__gnu_debug::__msg_valid_range)
455 ._M_iterator(__first, "first")
456 ._M_iterator(__last, "last"));
457 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
458 { return __it == __tmp; });
459 this->_M_invalidate_local_if(
460 [__tmp](_Base_const_local_iterator __it)
461 { return __it._M_curr() == __tmp._M_cur; });
463 size_type __bucket_count = this->bucket_count();
464 _Base_iterator __next = _Base::erase(__first.base(), __last.base());
465 _M_check_rehashed(__bucket_count);
466 return iterator(__next, this);
470 _M_base() noexcept { return *this; }
473 _M_base() const noexcept { return *this; }
477 _M_check_rehashed(size_type __prev_count)
479 if (__prev_count != this->bucket_count())
480 this->_M_invalidate_locals();
484 template<typename _Key, typename _Tp, typename _Hash,
485 typename _Pred, typename _Alloc>
487 swap(unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
488 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
489 noexcept(noexcept(__x.swap(__y)))
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._M_base() == __y._M_base(); }
499 template<typename _Key, typename _Tp, typename _Hash,
500 typename _Pred, typename _Alloc>
502 operator!=(const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
503 const unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
504 { return !(__x == __y); }
507 /// Class std::unordered_multimap with safety/checking/debug instrumentation.
508 template<typename _Key, typename _Tp,
509 typename _Hash = std::hash<_Key>,
510 typename _Pred = std::equal_to<_Key>,
511 typename _Alloc = std::allocator<std::pair<const _Key, _Tp> > >
512 class unordered_multimap
513 : public __gnu_debug::_Safe_container<
514 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>, _Alloc,
515 __gnu_debug::_Safe_unordered_container>,
516 public _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>
518 typedef _GLIBCXX_STD_C::unordered_multimap<_Key, _Tp, _Hash,
519 _Pred, _Alloc> _Base;
520 typedef __gnu_debug::_Safe_container<unordered_multimap,
521 _Alloc, __gnu_debug::_Safe_unordered_container> _Safe;
522 typedef typename _Base::const_iterator _Base_const_iterator;
523 typedef typename _Base::iterator _Base_iterator;
524 typedef typename _Base::const_local_iterator _Base_const_local_iterator;
525 typedef typename _Base::local_iterator _Base_local_iterator;
528 typedef typename _Base::size_type size_type;
529 typedef typename _Base::hasher hasher;
530 typedef typename _Base::key_equal key_equal;
531 typedef typename _Base::allocator_type allocator_type;
533 typedef typename _Base::key_type key_type;
534 typedef typename _Base::value_type value_type;
536 typedef __gnu_debug::_Safe_iterator<
537 _Base_iterator, unordered_multimap> iterator;
538 typedef __gnu_debug::_Safe_iterator<
539 _Base_const_iterator, unordered_multimap> const_iterator;
540 typedef __gnu_debug::_Safe_local_iterator<
541 _Base_local_iterator, unordered_multimap> local_iterator;
542 typedef __gnu_debug::_Safe_local_iterator<
543 _Base_const_local_iterator, unordered_multimap> const_local_iterator;
545 unordered_multimap() = default;
548 unordered_multimap(size_type __n,
549 const hasher& __hf = hasher(),
550 const key_equal& __eql = key_equal(),
551 const allocator_type& __a = allocator_type())
552 : _Base(__n, __hf, __eql, __a) { }
554 template<typename _InputIterator>
555 unordered_multimap(_InputIterator __first, _InputIterator __last,
557 const hasher& __hf = hasher(),
558 const key_equal& __eql = key_equal(),
559 const allocator_type& __a = allocator_type())
560 : _Base(__gnu_debug::__base(__gnu_debug::__check_valid_range(__first,
562 __gnu_debug::__base(__last), __n,
563 __hf, __eql, __a) { }
565 unordered_multimap(const unordered_multimap&) = default;
567 unordered_multimap(const _Base& __x)
570 unordered_multimap(unordered_multimap&&) = default;
573 unordered_multimap(const allocator_type& __a)
576 unordered_multimap(const unordered_multimap& __umap,
577 const allocator_type& __a)
578 : _Base(__umap, __a) { }
580 unordered_multimap(unordered_multimap&& __umap,
581 const allocator_type& __a)
582 : _Safe(std::move(__umap._M_safe()), __a),
583 _Base(std::move(__umap._M_base()), __a) { }
585 unordered_multimap(initializer_list<value_type> __l,
587 const hasher& __hf = hasher(),
588 const key_equal& __eql = key_equal(),
589 const allocator_type& __a = allocator_type())
590 : _Base(__l, __n, __hf, __eql, __a) { }
592 unordered_multimap(size_type __n, const allocator_type& __a)
593 : unordered_multimap(__n, hasher(), key_equal(), __a)
596 unordered_multimap(size_type __n, const hasher& __hf,
597 const allocator_type& __a)
598 : unordered_multimap(__n, __hf, key_equal(), __a)
601 template<typename _InputIterator>
602 unordered_multimap(_InputIterator __first, _InputIterator __last,
604 const allocator_type& __a)
605 : unordered_multimap(__first, __last, __n, hasher(), key_equal(), __a)
608 template<typename _InputIterator>
609 unordered_multimap(_InputIterator __first, _InputIterator __last,
610 size_type __n, const hasher& __hf,
611 const allocator_type& __a)
612 : unordered_multimap(__first, __last, __n, __hf, key_equal(), __a)
615 unordered_multimap(initializer_list<value_type> __l,
617 const allocator_type& __a)
618 : unordered_multimap(__l, __n, hasher(), key_equal(), __a)
621 unordered_multimap(initializer_list<value_type> __l,
622 size_type __n, const hasher& __hf,
623 const allocator_type& __a)
624 : unordered_multimap(__l, __n, __hf, key_equal(), __a)
627 ~unordered_multimap() = default;
630 operator=(const unordered_multimap&) = default;
633 operator=(unordered_multimap&&) = default;
636 operator=(initializer_list<value_type> __l)
638 this->_M_base() = __l;
639 this->_M_invalidate_all();
644 swap(unordered_multimap& __x)
645 noexcept( noexcept(declval<_Base&>().swap(__x)) )
655 this->_M_invalidate_all();
660 { return iterator(_Base::begin(), this); }
663 begin() const noexcept
664 { return const_iterator(_Base::begin(), this); }
668 { return iterator(_Base::end(), this); }
672 { return const_iterator(_Base::end(), this); }
675 cbegin() const noexcept
676 { return const_iterator(_Base::begin(), this); }
679 cend() const noexcept
680 { return const_iterator(_Base::end(), this); }
686 __glibcxx_check_bucket_index(__b);
687 return local_iterator(_Base::begin(__b), this);
693 __glibcxx_check_bucket_index(__b);
694 return local_iterator(_Base::end(__b), this);
698 begin(size_type __b) const
700 __glibcxx_check_bucket_index(__b);
701 return const_local_iterator(_Base::begin(__b), this);
705 end(size_type __b) const
707 __glibcxx_check_bucket_index(__b);
708 return const_local_iterator(_Base::end(__b), this);
712 cbegin(size_type __b) const
714 __glibcxx_check_bucket_index(__b);
715 return const_local_iterator(_Base::cbegin(__b), this);
719 cend(size_type __b) const
721 __glibcxx_check_bucket_index(__b);
722 return const_local_iterator(_Base::cend(__b), this);
726 bucket_size(size_type __b) const
728 __glibcxx_check_bucket_index(__b);
729 return _Base::bucket_size(__b);
733 max_load_factor() const noexcept
734 { return _Base::max_load_factor(); }
737 max_load_factor(float __f)
739 __glibcxx_check_max_load_factor(__f);
740 _Base::max_load_factor(__f);
743 template<typename... _Args>
745 emplace(_Args&&... __args)
747 size_type __bucket_count = this->bucket_count();
749 = _Base::emplace(std::forward<_Args>(__args)...);
750 _M_check_rehashed(__bucket_count);
751 return iterator(__it, this);
754 template<typename... _Args>
756 emplace_hint(const_iterator __hint, _Args&&... __args)
758 __glibcxx_check_insert(__hint);
759 size_type __bucket_count = this->bucket_count();
760 _Base_iterator __it = _Base::emplace_hint(__hint.base(),
761 std::forward<_Args>(__args)...);
762 _M_check_rehashed(__bucket_count);
763 return iterator(__it, this);
767 insert(const value_type& __obj)
769 size_type __bucket_count = this->bucket_count();
770 _Base_iterator __it = _Base::insert(__obj);
771 _M_check_rehashed(__bucket_count);
772 return iterator(__it, this);
776 insert(const_iterator __hint, const value_type& __obj)
778 __glibcxx_check_insert(__hint);
779 size_type __bucket_count = this->bucket_count();
780 _Base_iterator __it = _Base::insert(__hint.base(), __obj);
781 _M_check_rehashed(__bucket_count);
782 return iterator(__it, this);
785 template<typename _Pair, typename = typename
786 std::enable_if<std::is_constructible<value_type,
787 _Pair&&>::value>::type>
789 insert(_Pair&& __obj)
791 size_type __bucket_count = this->bucket_count();
792 _Base_iterator __it = _Base::insert(std::forward<_Pair>(__obj));
793 _M_check_rehashed(__bucket_count);
794 return iterator(__it, this);
797 template<typename _Pair, typename = typename
798 std::enable_if<std::is_constructible<value_type,
799 _Pair&&>::value>::type>
801 insert(const_iterator __hint, _Pair&& __obj)
803 __glibcxx_check_insert(__hint);
804 size_type __bucket_count = this->bucket_count();
805 _Base_iterator __it =
806 _Base::insert(__hint.base(), std::forward<_Pair>(__obj));
807 _M_check_rehashed(__bucket_count);
808 return iterator(__it, this);
812 insert(std::initializer_list<value_type> __l)
813 { _Base::insert(__l); }
815 template<typename _InputIterator>
817 insert(_InputIterator __first, _InputIterator __last)
819 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
820 __glibcxx_check_valid_range2(__first, __last, __dist);
821 size_type __bucket_count = this->bucket_count();
823 if (__dist.second >= __gnu_debug::__dp_sign)
824 _Base::insert(__gnu_debug::__unsafe(__first),
825 __gnu_debug::__unsafe(__last));
827 _Base::insert(__first, __last);
829 _M_check_rehashed(__bucket_count);
833 find(const key_type& __key)
834 { return iterator(_Base::find(__key), this); }
837 find(const key_type& __key) const
838 { return const_iterator(_Base::find(__key), this); }
840 std::pair<iterator, iterator>
841 equal_range(const key_type& __key)
843 std::pair<_Base_iterator, _Base_iterator> __res =
844 _Base::equal_range(__key);
845 return std::make_pair(iterator(__res.first, this),
846 iterator(__res.second, this));
849 std::pair<const_iterator, const_iterator>
850 equal_range(const key_type& __key) const
852 std::pair<_Base_const_iterator, _Base_const_iterator> __res =
853 _Base::equal_range(__key);
854 return std::make_pair(const_iterator(__res.first, this),
855 const_iterator(__res.second, this));
859 erase(const key_type& __key)
862 size_type __bucket_count = this->bucket_count();
863 std::pair<_Base_iterator, _Base_iterator> __pair =
864 _Base::equal_range(__key);
865 for (_Base_iterator __victim = __pair.first; __victim != __pair.second;)
867 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
868 { return __it == __victim; });
869 this->_M_invalidate_local_if(
870 [__victim](_Base_const_local_iterator __it)
871 { return __it._M_curr() == __victim._M_cur; });
872 _Base::erase(__victim++);
875 _M_check_rehashed(__bucket_count);
880 erase(const_iterator __it)
882 __glibcxx_check_erase(__it);
883 _Base_const_iterator __victim = __it.base();
884 this->_M_invalidate_if([__victim](_Base_const_iterator __it)
885 { return __it == __victim; });
886 this->_M_invalidate_local_if(
887 [__victim](_Base_const_local_iterator __it)
888 { return __it._M_curr() == __victim._M_cur; });
889 size_type __bucket_count = this->bucket_count();
890 _Base_iterator __next = _Base::erase(__it.base());
891 _M_check_rehashed(__bucket_count);
892 return iterator(__next, this);
897 { return erase(const_iterator(__it)); }
900 erase(const_iterator __first, const_iterator __last)
902 __glibcxx_check_erase_range(__first, __last);
903 for (_Base_const_iterator __tmp = __first.base();
904 __tmp != __last.base(); ++__tmp)
906 _GLIBCXX_DEBUG_VERIFY(__tmp != _Base::end(),
907 _M_message(__gnu_debug::__msg_valid_range)
908 ._M_iterator(__first, "first")
909 ._M_iterator(__last, "last"));
910 this->_M_invalidate_if([__tmp](_Base_const_iterator __it)
911 { return __it == __tmp; });
912 this->_M_invalidate_local_if(
913 [__tmp](_Base_const_local_iterator __it)
914 { return __it._M_curr() == __tmp._M_cur; });
916 size_type __bucket_count = this->bucket_count();
917 _Base_iterator __next = _Base::erase(__first.base(), __last.base());
918 _M_check_rehashed(__bucket_count);
919 return iterator(__next, this);
923 _M_base() noexcept { return *this; }
926 _M_base() const noexcept { return *this; }
930 _M_check_rehashed(size_type __prev_count)
932 if (__prev_count != this->bucket_count())
933 this->_M_invalidate_locals();
937 template<typename _Key, typename _Tp, typename _Hash,
938 typename _Pred, typename _Alloc>
940 swap(unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
941 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
942 noexcept(noexcept(__x.swap(__y)))
945 template<typename _Key, typename _Tp, typename _Hash,
946 typename _Pred, typename _Alloc>
948 operator==(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
949 const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
950 { return __x._M_base() == __y._M_base(); }
952 template<typename _Key, typename _Tp, typename _Hash,
953 typename _Pred, typename _Alloc>
955 operator!=(const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __x,
956 const unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>& __y)
957 { return !(__x == __y); }
959 } // namespace __debug